1822 lines
70 KiB
C
1822 lines
70 KiB
C
/*******************************************************************************
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* @file main.c
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* @brief Medithings VesiScan BASIC
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* @version 1.17
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* @date 2025-12-09
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* @author Charles KWON
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*
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* [System Architecture Overview]
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* VesiScan BASIC is an nRF52840 (ARM Cortex-M4F, 64MHz) based BLE bladder monitoring patch device.
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* Uses SoftDevice S140 (BLE 5.0) and communicates with the smartphone app via BLE NUS (Nordic UART Service) binary protocol.
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*
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* [Hardware Configuration]
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* - MCU: nRF52840 (SoftDevice S140 v7.x)
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* - IMU: ICM42670P 6-axis accel/gyro (I2C, 0x68)
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* - Temperature: TMP235-Q1 analog sensor (SAADC AIN3)
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* - Battery: voltage divider (SAADC AIN2, 1/3 prescale)
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* - Power: POWER_HOLD(P0.8) self-latch circuit, POWER_BUTTON(P1.8) input
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*
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* [Software Boot Sequence - main()]
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* Phase 1: Basic hardware (power latch, log, GPIO, timers, config, buttons/LEDs)
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* Phase 2: BLE stack (SoftDevice, power mgmt, DC-DC)
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* Phase 3: FDS + config load
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* Phase 4: BLE protocol (GAP, GATT, NUS, Advertising, security)
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* Phase 5: Application (parser, piezo)
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* Boot complete -> power button state machine (main_s) -> idle loop
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*
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* [Power Button State Machine - main_s() callback, 5ms interval]
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* - Short press (<1.5s, cnt_s<150): power OFF
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* - Medium press (1.5s~10s, cnt_s>=150): start boot sequence (sensor+BLE advertising)
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* - Long press (>10s, cnt_s>1000): factory reset (passkey reset + power OFF)
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*
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* [Event Flow]
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* 1. Receive command from app via BLE NUS -> nus_data_handler -> dr_cmd_parser
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* 2. Receive command from UART -> uart_event_handle -> dr_cmd_parser
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* 3. Command parser (cmd_parse.c) dispatches by tag (sta?, ssn?, ssp?, etc.)
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* 4. Build binary packets from sensor data via format_data() family
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* 5. Transmit over BLE with CRC16 via dr_binary_tx_safe() (max 100 retries)
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*
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* [Build Modes]
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* BLE_DEV_MODE = 1 : No security (fast pairing, development)
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* BLE_DEV_MODE = 0 : Static passkey + MITM protection (production)
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******************************************************************************/
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/*==============================================================================
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* INCLUDES
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*============================================================================*/
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#include <stdint.h>
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#include <string.h>
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#include "nordic_common.h"
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#include "nrf.h"
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#include "ble_hci.h" /* BLE HCI error code definitions */
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#include "ble_advdata.h" /* BLE advertising data structures */
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#include "ble_advertising.h" /* BLE advertising module */
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#include "ble_srv_common.h" /* BLE service common utilities */
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#include "ble_conn_params.h" /* BLE connection parameter negotiation */
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#include "nrf_sdh.h" /* SoftDevice handler (BLE stack management) */
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#include "nrf_sdh_soc.h" /* SoftDevice SoC event handler */
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#include "nrf_sdh_ble.h" /* SoftDevice BLE event handler */
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#include "nrf_ble_gatt.h" /* BLE GATT module (MTU negotiation) */
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#include "nrf_ble_qwr.h" /* BLE Queued Write module (long characteristic writes) */
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#include "app_timer.h" /* App timer (RTC1-based soft timer) */
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#include "ble_nus.h" /* Nordic UART Service (BLE bidirectional data) */
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#include "app_uart.h" /* Physical UART driver (debug/factory test) */
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#include "app_util_platform.h" /* Interrupt priority macros */
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#include "nrf_pwr_mgmt.h" /* Power management (WFE/sleep when idle) */
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#include "nrf_delay.h" /* Blocking delay (us/ms) */
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#include "math.h"
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#include "crc16.h" /* CRC16 computation (BLE packet integrity) */
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#if defined (UART_PRESENT)
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#include "nrf_uart.h"
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#endif
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#if defined (UARTE_PRESENT)
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#include "nrf_uarte.h"
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#endif
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#include "nrf_log.h"
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#include "nrf_log_ctrl.h"
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#include "nrf_log_default_backends.h"
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#if BLE_DFU_ENABLED
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#include "nrf_pwr_mgmt.h"
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#include "ble_dfu.h"
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#include "nrf_power.h"
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#include "nrf_bootloader_info.h"
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#include "nrf_dfu_ble_svci_bond_sharing.h"
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#include "nrf_svci_async_function.h"
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#include "nrf_svci_async_handler.h"
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#endif
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/* -- Application module headers -- */
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#include "system_interface.h" /* System interface (IMU sensor I2C communication) */
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#include "main.h" /* Main header (global structs, constants, extern declarations) */
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#include "app_raw_main.h" /* Sensor raw data processing module */
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#include "main_timer.h" /* Main event loop timer (10ms period) */
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#include "power_control.h" /* Power sequence control (ON/OFF/sleep) */
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#include "tmp235_q1.h" /* TMP235-Q1 temperature sensor driver */
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#include "fds.h" /* Flash Data Storage (non-volatile config) */
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#include "battery_saadc.h" /* Battery voltage measurement (SAADC) */
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/* -- BLE security headers (when FEATURE_SECURE_CONNECTION enabled) -- */
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#if FEATURE_SECURE_CONNECTION
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#include "peer_manager.h" /* Peer Manager (bonding/pairing management) */
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#include "peer_manager_handler.h" /* Peer Manager default event handler */
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#include "nrf_ble_lesc.h" /* BLE LESC (LE Secure Connections) support */
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#include "ble_quick_security.h" /* Quick security setup wrapper */
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#include "i2c_manager.h" /* I2C bus manager (sensor communication) */
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#endif
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/* -- Crypto / command parser / debug -- */
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#include "parser.h" /* Binary command parser (dr_cmd_parser) */
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#include "cmd_table.h" /* Command table registration (cmd_table_init) */
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#include "debug_print.h" /* Debug output macro (DBG_PRINTF) */
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#include "fstorage.h" /* Flash Storage wrapper (FDS init/save/load) */
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#include "dr_piezo.h" /* Piezo ultrasound driver */
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#include "led_control.h" /* LED direct control driver */
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/*==============================================================================
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* Build Configuration
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*============================================================================*/
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#define BLE_DEV_MODE 0 /* 1: Dev mode (no security), 0: Production mode (passkey required) */
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/*==============================================================================
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* Hardware Pin Definitions
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*============================================================================*/
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#define POWER_HOLD NRF_GPIO_PIN_MAP(0,8) /* Power self-latch pin (HIGH=power maintained) */
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#define POWER_BUTTON NRF_GPIO_PIN_MAP(1,8) /* Power button input pin (LOW=pressed) */
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/*==============================================================================
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* BLE Configuration
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*============================================================================*/
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#define APP_BLE_CONN_CFG_TAG 1 /* SoftDevice BLE config tag */
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#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /* NUS UUID type (vendor-specific) */
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#define APP_BLE_OBSERVER_PRIO 3 /* BLE event observer priority */
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#define APP_ADV_INTERVAL 64 /* Advertising interval: 64 x 0.625ms = 40ms */
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#define APP_ADV_DURATION_NORMAL 60000 /* Normal disconnect adv duration: 60000 x 10ms = 10min */
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#define APP_ADV_DURATION_UNLIMITED 0 /* Unintended disconnect: unlimited advertising */
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#define APP_ADV_DURATION APP_ADV_DURATION_NORMAL /* Default adv duration (changed at runtime by disconnect reason) */
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#define MIN_CONN_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /* Min connection interval: 30ms */
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#define MAX_CONN_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /* Max connection interval: 30ms */
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#define SLAVE_LATENCY 0 /* Slave latency: 0 (respond every connection event) */
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#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /* Connection supervision timeout: 4s */
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#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /* Wait 5s before first param update request */
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#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /* Subsequent param update interval: 30s */
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#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /* Max param update attempts */
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/*==============================================================================
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* System Constants
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*============================================================================*/
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#define DEAD_BEEF 0xDEADBEEF /* SDK error handler magic number */
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#define UART_TX_BUF_SIZE 16384 /* UART TX FIFO buffer size (16KB) */
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#define UART_RX_BUF_SIZE 512 /* UART RX FIFO buffer size */
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#define POWER_ON_DELAY 5 /* Power button polling interval (5ms) */
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#define POWER_OFF_DELAY 3000 /* Power-off delay: 3s after LED indication */
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#define POWER_RESET_DELAY 2000 /* Reset delay: 2s */
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#define LED_NUM 24 /* LED pin number */
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/*==============================================================================
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* BLE Instances (statically allocated via SoftDevice macros)
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*============================================================================*/
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BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT); /* Nordic UART Service instance */
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NRF_BLE_GATT_DEF(m_gatt); /* GATT module instance (MTU negotiation) */
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NRF_BLE_QWR_DEF(m_qwr); /* Queued Write instance */
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BLE_ADVERTISING_DEF(m_advertising); /* Advertising module instance */
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/*==============================================================================
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* Timer Instances
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*============================================================================*/
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APP_TIMER_DEF(m_power_on_delay_timer_id); /* Power button polling timer (5ms single-shot, main_s callback) */
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APP_TIMER_DEF(m_power_off_delay_timer_id); /* Power-off delay timer (physical power cut after 3s) */
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APP_TIMER_DEF(m_PM_timer_id); /* Peer Manager timer (forced disconnect) */
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/*==============================================================================
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* Static Variables
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*============================================================================*/
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#if FEATURE_SECURE_CONNECTION
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static pm_peer_id_t m_peer_to_be_deleted = PM_PEER_ID_INVALID;
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#endif
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static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /* Current BLE connection handle */
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static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /* NUS max data length (MTU - overhead) */
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static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}}; /* UUIDs included in advertising */
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static uint8_t m_tx_buffer[BLE_NUS_MAX_DATA_LEN] = {0}; /* ASCII text transmission buffer */
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static uint16_t m_tx_len = 0; /* Data length to transmit */
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static volatile bool m_tx_in_progress = false; /* TX in progress flag */
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static volatile bool m_tx_complete_pending = false; /* TX completion pending flag */
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static uint8_t c_addr[6] = {0}; /* Connected peer BLE address */
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static char * roles_str[] = {"INVALID_ROLE", "CENTRAL", "PERIPHERAL"};
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/*==============================================================================
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* Global Variables
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* IEC 62304 §5.5.3: all global buffers zero-initialized for deterministic startup
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*============================================================================*/
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volatile uint8_t Sj_type; /* Command type identifier */
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bool power_off_duble_prohibit = false; /* Power-off double prevention flag */
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volatile bool power_state = false; /* Power state tracking */
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/* -- External module flags (defined in main_timer/power_control) -- */
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extern bool go_device_power_off; /* Power-off request flag */
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extern bool go_sleep_mode_enter; /* Sleep mode entry request flag */
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extern bool go_NVIC_SystemReset; /* System reset request flag */
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extern bool ble_got_new_data; /* BLE new data received flag */
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extern bool motion_data_once; /* Motion data one-shot transmit flag */
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extern bool con_single; /* Single connection mode flag */
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extern bool info4; /* Device info transmission complete flag */
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extern uint8_t add_cycle; /* Additional measurement cycle counter */
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extern bool motion_raw_data_enabled; /* Motion raw data streaming enabled */
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uint16_t cnt_s; /* Power button polling counter (5ms units, 150=0.75s) */
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char ble_tx_buffer[BLE_NUS_MAX_DATA_LEN] = {0}; /* BLE text transmission buffer */
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uint8_t ble_bin_buffer[BLE_NUS_MAX_DATA_LEN] = {0}; /* BLE binary response buffer */
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uint16_t ble_bin_buff[BLE_NUS_MAX_DATA_LEN/2] = {0}; /* BLE binary transmission buffer (word units) */
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which_cmd_t cmd_type_t; /* Current command source (CMD_BLE or CMD_UART) */
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bool device_status = false; /* Device active state (true=running) */
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bool device_reset = true; /* Booting flag (true=not yet booted) */
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#if FEATURE_SECURE_CONNECTION
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bool erase_bonds; /* Bond erase flag (set by button state at boot) */
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#endif
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volatile bool ble_connection_st; /* BLE connection state (1=connected, 0=disconnected) */
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volatile bool data_tx_in_progress = false; /* Binary TX in progress flag */
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/* -- BLE TX async retry state -- */
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static volatile bool s_tx_pending = false; /* TX retry pending */
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static uint8_t s_tx_pending_buf[BLE_NUS_MAX_DATA_LEN] = {0}; /* Pending packet (with CRC) */
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static uint16_t s_tx_pending_len = 0; /* Pending packet length */
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char m_static_passkey[PASSKEY_LENGTH] = DEFAULT_PASSKEY; /* Static passkey (6 digits, loaded from FDS) */
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char SERIAL_NO[SERIAL_NO_LENGTH] = {0}; /* Serial number (used as BLE device name) */
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char HW_NO[HW_NO_LENGTH] = {0}; /* Hardware number (FDS stored/read) */
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bool bond_data_delete; /* Bond data delete request flag */
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uint32_t m_life_cycle; /* Device life cycle counter */
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uint8_t resetCount = 0; /* Communication timeout counter (reset detection) */
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bool info4; /* Measurement with sensor info (battery/IMU/temp) flag */
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uint8_t m_reset_status; /* Reset status code (1=normal, 2=SW reset, 5=security reset, 10=bond complete) */
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/*==============================================================================
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* Suppress Unused Variable Warnings
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*============================================================================*/
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#if FEATURE_SECURE_CONNECTION
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static void __attribute__((unused)) suppress_unused_warnings(void)
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{
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(void)m_peer_to_be_deleted;
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(void)roles_str;
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(void)c_addr;
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}
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#endif
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/*==============================================================================
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* Power Management
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*============================================================================*/
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/**
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* @brief Initialize power self-latch pin
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*
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* Configure P0.8 (POWER_HOLD) as output and drive HIGH to maintain the external power latch.
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* When P0.8 goes LOW, physical power is cut off.
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* Must be called first upon main() entry (Phase 0).
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*/
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static void power_hold_init(void)
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{
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NRF_P0->DIRSET = (1 << 8); /* Set P0.8 as output */
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NRF_P0->OUTSET = (1 << 8); /* Set P0.8 HIGH -> maintain power */
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}
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/**
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* @brief Physical power ON/OFF control
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*
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* Directly controls the POWER_HOLD pin for physical device power ON/OFF.
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* When OFF, the power latch releases and the entire system shuts down (non-recoverable).
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*/
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static void power_control_handler(on_off_cont_t device_power_st)
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{
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if (device_power_st == OFF)
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{
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nrf_gpio_pin_clear(POWER_HOLD); /* P0.8 LOW -> release power latch -> power cut */
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DBG_PRINTF("[PWR] OFF\r\n");
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}
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else if (device_power_st == ON)
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{
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nrf_gpio_pin_set(POWER_HOLD); /* P0.8 HIGH -> maintain power */
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DBG_PRINTF("[PWR] ON\r\n");
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}
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}
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/*==============================================================================
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* GPIO Initialization
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*============================================================================*/
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/**
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* @brief GPIO initialization
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*
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* Configure power button input and power hold pin only.
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*/
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static void gpio_init(void)
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{
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nrf_gpio_cfg_input(POWER_BUTTON, NRF_GPIO_PIN_NOPULL);
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DBG_PRINTF("[GPIO] OK (BTN=%d)\r\n", nrf_gpio_pin_read(POWER_BUTTON));
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}
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/*==============================================================================
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* Configuration Loading
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* Load defaults before reading from FDS (Flash Data Storage).
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* After FDS init, load_flash_config() overwrites with flash-stored values.
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*============================================================================*/
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/**
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* @brief Load default configuration values
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*
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* Set safe defaults in global variables before reading from FDS.
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* Initializes serial number, passkey, reset status, etc. to defaults.
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*/
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static void load_default_config(void)
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{
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memset(SERIAL_NO, 0, SERIAL_NO_LENGTH);
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memcpy(SERIAL_NO, SERIAL_NUMBER, strlen(SERIAL_NUMBER));
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memset(m_static_passkey, 0, PASSKEY_LENGTH);
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memcpy(m_static_passkey, DEFAULT_PASSKEY, PASSKEY_LENGTH);
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m_reset_status = 1;
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bond_data_delete = 0;
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DBG_PRINTF("[CFG] Default (S/N=%s)\r\n", SERIAL_NO);
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}
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/**
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* @brief Load configuration from internal flash (FDS) into global variables
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*
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* Must be called after ble_stack_init() -> fs_storage_init() -> config_load().
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* Copies the m_config struct read from FDS into runtime global variables.
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* Empty fields (0x00 or 0xFF) are filled with defaults and m_need_save_defaults is set.
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*/
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static bool m_need_save_defaults = false;
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static void load_flash_config(void)
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{
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m_need_save_defaults = false;
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/* Hardware number -- fill with default if empty */
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if (m_config.hw_no[0] == 0 || m_config.hw_no[0] == (char)0xFF)
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{
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memset(m_config.hw_no, 0, HW_NO_LENGTH);
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memcpy(m_config.hw_no, HARDWARE_VERSION, strlen(HARDWARE_VERSION));
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DBG_PRINTF("[CFG] HW empty, set default: %s\r\n", HARDWARE_VERSION);
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m_need_save_defaults = true;
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}
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/* Serial number -- fill with default if empty */
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if (m_config.serial_no[0] == 0 || m_config.serial_no[0] == (char)0xFF)
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{
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memset(m_config.serial_no, 0, SERIAL_NO_LENGTH);
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memcpy(m_config.serial_no, SERIAL_NUMBER, strlen(SERIAL_NUMBER));
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DBG_PRINTF("[CFG] S/N empty, set default: %s\r\n", SERIAL_NUMBER);
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m_need_save_defaults = true;
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}
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/* Copy serial number -> BLE device name */
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memset(SERIAL_NO, 0, SERIAL_NO_LENGTH);
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memcpy(SERIAL_NO, m_config.serial_no, SERIAL_NO_LENGTH);
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/* Copy passkey */
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memset(m_static_passkey, 0, PASSKEY_LENGTH);
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memcpy(m_static_passkey, m_config.static_passkey, PASSKEY_LENGTH);
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/* Bond data delete flag */
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bond_data_delete = m_config.bond_data_delete;
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/* Reset status */
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m_reset_status = m_config.reset_status;
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DBG_PRINTF("[CFG] HW=%.12s S/N=%s passkey=%.6s bond=%d rst=%d\r\n",
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m_config.hw_no, SERIAL_NO, m_static_passkey, bond_data_delete, m_reset_status);
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DBG_PRINTF("[CFG] piezo: freq=%u cyc=%u avg=%u delay=%u samples=%u\r\n",
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m_config.piezo_freq_option, m_config.piezo_cycles,
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m_config.piezo_averaging, m_config.piezo_delay_us,
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m_config.piezo_num_samples);
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}
|
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|
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/*==============================================================================
|
||
* Timer Callback Functions
|
||
*============================================================================*/
|
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static void main_s(void * p_context); /* Power button state machine (forward declaration) */
|
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static void t_power_off_timeout_handler(void * p_context); /* Power-off timeout */
|
||
static void PM_s(void * p_context); /* Peer Manager timer */
|
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|
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/**
|
||
* @brief Power-off timeout callback
|
||
*
|
||
* Called after POWER_OFF_DELAY (3s) elapses.
|
||
* Turns off LED and sets POWER_HOLD pin LOW for physical power cut.
|
||
* After this function, the device is completely off (non-recoverable).
|
||
*/
|
||
static void t_power_off_timeout_handler(void * p_context)
|
||
{
|
||
UNUSED_PARAMETER(p_context);
|
||
APP_ERROR_CHECK(app_timer_stop(m_power_off_delay_timer_id));
|
||
DBG_PRINTF("[PWR] Off timeout\r\n");
|
||
led_set_state(LED_STATE_OFF); /* LED OFF */
|
||
power_control_handler(OFF); /* P0.8 LOW -> power cut */
|
||
}
|
||
|
||
/**
|
||
* @brief Peer Manager timer callback
|
||
*
|
||
* Force BLE disconnect when in security-related state (m_reset_status==5).
|
||
* Used to drop the existing connection for reconnection after bond deletion.
|
||
*/
|
||
static void PM_s(void * p_context)
|
||
{
|
||
UNUSED_PARAMETER(p_context);
|
||
APP_ERROR_CHECK(app_timer_stop(m_PM_timer_id));
|
||
|
||
if (m_reset_status == 5)
|
||
{
|
||
DBG_PRINTF("[PM] Kill\r\n");
|
||
sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
|
||
}
|
||
}
|
||
|
||
/*==============================================================================
|
||
* Timer Initialization / Start Functions
|
||
*============================================================================*/
|
||
|
||
/**
|
||
* @brief Initialize all app timers (boot Phase 3)
|
||
*
|
||
* Initialize app_timer module then create each timer:
|
||
* - m_power_on_delay_timer: power button polling (5ms single-shot, main_s callback)
|
||
* - m_power_off_delay_timer: power-off delay (3s single-shot)
|
||
* - m_PM_timer: Peer Manager disconnect (single-shot)
|
||
* - main_timer: main event loop (10ms single-shot, main_loop callback)
|
||
* - battery_timer: battery monitoring (5s repeating)
|
||
* - power_timer: power sequence (20ms single-shot, power_loop callback)
|
||
*/
|
||
static void timers_init(void)
|
||
{
|
||
ret_code_t err_code = app_timer_init();
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
APP_ERROR_CHECK(app_timer_create(&m_power_on_delay_timer_id, APP_TIMER_MODE_SINGLE_SHOT, main_s));
|
||
APP_ERROR_CHECK(app_timer_create(&m_power_off_delay_timer_id, APP_TIMER_MODE_SINGLE_SHOT, t_power_off_timeout_handler));
|
||
APP_ERROR_CHECK(app_timer_create(&m_PM_timer_id, APP_TIMER_MODE_SINGLE_SHOT, PM_s));
|
||
|
||
main_timer_init();
|
||
battery_timer_init();
|
||
power_timer_init();
|
||
|
||
#if FEATURE_PRINTF
|
||
full_timer_init();
|
||
#endif
|
||
}
|
||
|
||
/**
|
||
* @brief Start the power button polling timer
|
||
*
|
||
* Fires main_s() callback after 5ms (POWER_ON_DELAY).
|
||
* main_s() checks button state; if still pressed, re-arms the timer to drive the state machine.
|
||
*/
|
||
static void timers_start(void)
|
||
{
|
||
ret_code_t err_code;
|
||
err_code = app_timer_start(m_power_on_delay_timer_id, APP_TIMER_TICKS(POWER_ON_DELAY), NULL);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE DFU Handler
|
||
* Handles DFU (Device Firmware Update) events for firmware update over BLE.
|
||
* Logs bootloader entry preparation, success/failure events.
|
||
*============================================================================*/
|
||
#if BLE_DFU_ENABLED
|
||
static void ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
|
||
{
|
||
switch (event)
|
||
{
|
||
case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
|
||
DBG_PRINTF("[DFU] Prepare\r\n");
|
||
break;
|
||
case BLE_DFU_EVT_BOOTLOADER_ENTER:
|
||
DBG_PRINTF("[DFU] Enter\r\n");
|
||
break;
|
||
case BLE_DFU_EVT_BOOTLOADER_ENTER_FAILED:
|
||
DBG_PRINTF("[DFU] Failed\r\n");
|
||
break;
|
||
case BLE_DFU_EVT_RESPONSE_SEND_ERROR:
|
||
DBG_PRINTF("[DFU] Error\r\n");
|
||
APP_ERROR_CHECK(false);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/*==============================================================================
|
||
* BLE GAP Initialization
|
||
*============================================================================*/
|
||
|
||
/**
|
||
* @brief Initialize GAP (Generic Access Profile) parameters
|
||
*
|
||
* 1) Set device name to SERIAL_NO -> shown during BLE scan
|
||
* 2) Configure connection parameters (20~75ms interval, slave latency 0, supervision timeout 4s)
|
||
* 3) Set static passkey (when FEATURE_STATIC_PASSKEY enabled)
|
||
*/
|
||
static void gap_params_init(void)
|
||
{
|
||
uint32_t err_code;
|
||
ble_gap_conn_params_t gap_conn_params;
|
||
ble_gap_conn_sec_mode_t sec_mode;
|
||
#if FEATURE_STATIC_PASSKEY
|
||
ble_opt_t ble_opt;
|
||
#endif
|
||
|
||
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
|
||
|
||
err_code = sd_ble_gap_device_name_set(&sec_mode,
|
||
(const uint8_t *) SERIAL_NO,
|
||
strlen(SERIAL_NO));
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
|
||
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
|
||
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
|
||
gap_conn_params.slave_latency = SLAVE_LATENCY;
|
||
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
|
||
|
||
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
#if FEATURE_STATIC_PASSKEY
|
||
ble_opt.gap_opt.passkey.p_passkey = (const uint8_t *)m_static_passkey;
|
||
err_code = sd_ble_opt_set(BLE_GAP_OPT_PASSKEY, &ble_opt);
|
||
APP_ERROR_CHECK(err_code);
|
||
#endif
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE Service Initialization
|
||
*============================================================================*/
|
||
static void nrf_qwr_error_handler(uint32_t nrf_error)
|
||
{
|
||
APP_ERROR_HANDLER(nrf_error);
|
||
}
|
||
|
||
/* Async MAA TX complete handler (forward declarations) */
|
||
extern bool maa_async_on_tx_ready(void);
|
||
extern bool maa_async_is_busy(void);
|
||
extern void maa_async_abort(void);
|
||
|
||
/* 2026-03-17: Prevent blocking in BLE callback -- buffer command for main loop processing */
|
||
static volatile uint8_t pending_cmd_buf[BLE_NUS_MAX_DATA_LEN] = {0};
|
||
static volatile uint8_t pending_cmd_len = 0;
|
||
|
||
/**
|
||
* @brief NUS (Nordic UART Service) data receive handler
|
||
*
|
||
* Called when data is received from the smartphone app over BLE.
|
||
* - RX_DATA event: copy received data to buffer (dr_cmd_parser called in main loop)
|
||
* - TX_RDY event: BLE TX buffer has space, continue async MAA transmission
|
||
*/
|
||
static void nus_data_handler(ble_nus_evt_t * p_evt)
|
||
{
|
||
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
|
||
{
|
||
cmd_type_t = CMD_BLE;
|
||
ble_got_new_data = true;
|
||
|
||
/* Central may have increased connection interval; re-request fast interval (once per 30s) */
|
||
{
|
||
static uint32_t last_update_tick = 0;
|
||
uint32_t now_tick = app_timer_cnt_get();
|
||
if (last_update_tick == 0 || app_timer_cnt_diff_compute(now_tick, last_update_tick) >= APP_TIMER_TICKS(30000))
|
||
{
|
||
ble_gap_conn_params_t conn_params;
|
||
conn_params.min_conn_interval = MIN_CONN_INTERVAL;
|
||
conn_params.max_conn_interval = MAX_CONN_INTERVAL;
|
||
conn_params.slave_latency = SLAVE_LATENCY;
|
||
conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
|
||
sd_ble_gap_conn_param_update(m_conn_handle, &conn_params);
|
||
last_update_tick = now_tick;
|
||
}
|
||
}
|
||
|
||
/* Only copy in callback; process in main loop */
|
||
if (p_evt->params.rx_data.length <= BLE_NUS_MAX_DATA_LEN)
|
||
{
|
||
memcpy((void *)pending_cmd_buf, p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
|
||
pending_cmd_len = p_evt->params.rx_data.length;
|
||
}
|
||
}
|
||
else if (p_evt->type == BLE_NUS_EVT_TX_RDY)
|
||
{
|
||
/* BLE TX buffer has space - continue async MAA transmission */
|
||
if (maa_async_is_busy())
|
||
{
|
||
maa_async_on_tx_ready();
|
||
}
|
||
/* Retry pending packet (dr_binary_tx_safe async) */
|
||
else if (s_tx_pending)
|
||
{
|
||
uint16_t send_len = s_tx_pending_len;
|
||
uint32_t err = ble_nus_data_send(&m_nus, s_tx_pending_buf, &send_len, m_conn_handle);
|
||
if (err == NRF_SUCCESS)
|
||
{
|
||
s_tx_pending = false;
|
||
}
|
||
/* NRF_ERROR_RESOURCES -> retry on next TX_RDY */
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Initialize BLE services
|
||
*
|
||
* Initialize QWR (Queued Write) + NUS (Nordic UART Service) + DFU (optional).
|
||
* Register nus_data_handler as the NUS data_handler for BLE receive processing.
|
||
*/
|
||
static void services_init(void)
|
||
{
|
||
uint32_t err_code;
|
||
ble_nus_init_t nus_init;
|
||
nrf_ble_qwr_init_t qwr_init = {0};
|
||
|
||
qwr_init.error_handler = nrf_qwr_error_handler;
|
||
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
memset(&nus_init, 0, sizeof(nus_init));
|
||
nus_init.data_handler = nus_data_handler;
|
||
err_code = ble_nus_init(&m_nus, &nus_init);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
#if BLE_DFU_ENABLED
|
||
ble_dfu_buttonless_init_t dfus_init = {0};
|
||
dfus_init.evt_handler = ble_dfu_evt_handler;
|
||
err_code = ble_dfu_buttonless_init(&dfus_init);
|
||
APP_ERROR_CHECK(err_code);
|
||
#endif
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE Connection Parameter Negotiation
|
||
*============================================================================*/
|
||
/** @brief Disconnect on connection parameter negotiation failure */
|
||
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
|
||
{
|
||
if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
|
||
{
|
||
DBG_PRINTF("[CONN] Param negotiation FAILED -> disconnect\r\n");
|
||
uint32_t err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
}
|
||
|
||
static void conn_params_error_handler(uint32_t nrf_error)
|
||
{
|
||
APP_ERROR_HANDLER(nrf_error);
|
||
}
|
||
|
||
/**
|
||
* @brief Initialize BLE connection parameter module
|
||
*
|
||
* Wait 5s after connection -> request param update -> retry every 30s up to 3 times.
|
||
* On failure, on_conn_params_evt disconnects.
|
||
*/
|
||
static void conn_params_init(void)
|
||
{
|
||
uint32_t err_code;
|
||
ble_conn_params_init_t cp_init;
|
||
|
||
memset(&cp_init, 0, sizeof(cp_init));
|
||
cp_init.p_conn_params = NULL;
|
||
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
|
||
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
|
||
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
|
||
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
|
||
cp_init.disconnect_on_fail = false;
|
||
cp_init.evt_handler = on_conn_params_evt;
|
||
cp_init.error_handler = conn_params_error_handler;
|
||
|
||
err_code = ble_conn_params_init(&cp_init);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE Stack Initialization
|
||
*============================================================================*/
|
||
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context);
|
||
|
||
/**
|
||
* @brief Initialize SoftDevice BLE stack
|
||
*
|
||
* 1) Request SoftDevice enable
|
||
* 2) Set BLE default config (auto-compute RAM start address)
|
||
* 3) Enable BLE
|
||
* 4) Register BLE event observer (ble_evt_handler)
|
||
*/
|
||
static void ble_stack_init(void)
|
||
{
|
||
ret_code_t err_code;
|
||
|
||
err_code = nrf_sdh_enable_request();
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
uint32_t ram_start = 0;
|
||
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
err_code = nrf_sdh_ble_enable(&ram_start);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE GATT (Generic Attribute Profile)
|
||
* Determines max data size per transfer via MTU negotiation.
|
||
*============================================================================*/
|
||
|
||
/** @brief GATT MTU update event handler -- updates NUS max data length */
|
||
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
|
||
{
|
||
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
|
||
{
|
||
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
|
||
}
|
||
}
|
||
|
||
/** @brief Initialize GATT module -- set MTU to max size */
|
||
static void gatt_init(void)
|
||
{
|
||
ret_code_t err_code;
|
||
|
||
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
/*==============================================================================
|
||
* BLE Advertising
|
||
*============================================================================*/
|
||
|
||
/**
|
||
* @brief BLE advertising event handler
|
||
*
|
||
* - FAST: advertising started (LED indication)
|
||
* - IDLE: advertising timeout -> set sleep mode entry flag
|
||
*/
|
||
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
|
||
{
|
||
switch (ble_adv_evt)
|
||
{
|
||
case BLE_ADV_EVT_FAST:
|
||
led_set_state(LED_STATE_ADVERTISING);
|
||
DBG_PRINTF("[ADV] Fast\r\n");
|
||
break;
|
||
case BLE_ADV_EVT_IDLE:
|
||
DBG_PRINTF("[ADV] Idle\r\n");
|
||
go_sleep_mode_enter = true;
|
||
main_timer_start();
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Initialize BLE advertising
|
||
*
|
||
* Advertising data: full device name, NUS UUID.
|
||
* Advertising mode: Fast (40ms interval), default duration 10 min.
|
||
* May switch to unlimited advertising at runtime based on disconnect reason.
|
||
*/
|
||
static void advertising_init(void)
|
||
{
|
||
uint32_t err_code;
|
||
ble_advertising_init_t init;
|
||
|
||
memset(&init, 0, sizeof(init));
|
||
|
||
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
|
||
init.advdata.include_appearance = true;
|
||
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
|
||
|
||
init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
|
||
init.srdata.uuids_complete.p_uuids = m_adv_uuids;
|
||
|
||
init.config.ble_adv_fast_enabled = true;
|
||
init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
|
||
init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
|
||
init.evt_handler = on_adv_evt;
|
||
|
||
err_code = ble_advertising_init(&m_advertising, &init);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
|
||
}
|
||
|
||
#if FEATURE_SECURE_CONNECTION
|
||
/** @brief Delete all bonding (pairing) info from flash */
|
||
static void delete_bonds(void)
|
||
{
|
||
ret_code_t err_code;
|
||
DBG_PRINTF("[PM] Erase bonds\r\n");
|
||
err_code = pm_peers_delete();
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
/**
|
||
* @brief Start BLE advertising (secure mode)
|
||
*
|
||
* If erase_bonds_flag is true, delete all bond info first, then
|
||
* start advertising from PM_EVT_PEERS_DELETE_SUCCEEDED event.
|
||
* If false, start Fast mode advertising immediately.
|
||
*/
|
||
static void advertising_start(bool erase_bonds_flag)
|
||
{
|
||
if (erase_bonds_flag == true)
|
||
{
|
||
DBG_PRINTF("[BOND] Delete requested (count_before=%lu)\r\n", (unsigned long)pm_peer_count());
|
||
|
||
/* Clear bond delete request flag in flash -> prevent re-deletion on next boot */
|
||
bond_data_delete = false;
|
||
m_config.bond_data_delete = 0;
|
||
config_save();
|
||
|
||
delete_bonds(); /* After deletion, advertising starts from pm_evt_handler */
|
||
}
|
||
else
|
||
{
|
||
ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
}
|
||
#else
|
||
/** @brief Start BLE advertising (non-secure mode, immediate Fast advertising) */
|
||
static void advertising_start(void)
|
||
{
|
||
uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
#endif
|
||
|
||
/*==============================================================================
|
||
* BLE Security (Peer Manager)
|
||
* LESC/static passkey MITM protection, bonding management
|
||
*============================================================================*/
|
||
#if FEATURE_SECURE_CONNECTION
|
||
/**
|
||
* @brief Peer Manager event handler
|
||
*
|
||
* Handles BLE security events:
|
||
* - CONN_SEC_SUCCEEDED: security established -> verify MITM then activate connection
|
||
* - CONN_SEC_FAILED: security failed -> retry on PIN/key missing
|
||
* - PEERS_DELETE_SUCCEEDED: bond deletion complete -> restart advertising
|
||
* - CONN_SEC_CONFIG_REQ: allow re-pairing config
|
||
* - PEER_DATA_UPDATE_SUCCEEDED: peer data updated -> save address, update reset status
|
||
*/
|
||
static void pm_evt_handler(pm_evt_t const * p_evt)
|
||
{
|
||
pm_peer_data_bonding_t peer_bonding_data;
|
||
uint32_t return_code;
|
||
ret_code_t err_code;
|
||
|
||
/* SDK default handler + security processing (SDK handler called inside ble_quick_security) */
|
||
ble_security_quick_pm_handler(p_evt);
|
||
|
||
switch (p_evt->evt_id)
|
||
{
|
||
/* Security connection succeeded */
|
||
case PM_EVT_CONN_SEC_SUCCEEDED:
|
||
{
|
||
pm_conn_sec_status_t conn_sec_status;
|
||
err_code = pm_conn_sec_status_get(p_evt->conn_handle, &conn_sec_status);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
/* Verify MITM protection (always pass in dev mode) */
|
||
if (conn_sec_status.mitm_protected || BLE_DEV_MODE)
|
||
{
|
||
DBG_PRINTF("[PM] Secured\r\n");
|
||
ble_connection_st = 1; /* Activate connection state */
|
||
battery_timer_start(); /* Start battery monitoring */
|
||
}
|
||
else
|
||
{
|
||
/* MITM not protected -> delete peer and disconnect */
|
||
DBG_PRINTF("[PM] Sec FAIL\r\n");
|
||
err_code = pm_peer_id_get(m_conn_handle, &m_peer_to_be_deleted);
|
||
APP_ERROR_CHECK(err_code);
|
||
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
}
|
||
break;
|
||
|
||
/* Security connection failed (retry/disconnect handled by ble_quick_security) */
|
||
case PM_EVT_CONN_SEC_FAILED:
|
||
DBG_PRINTF("[PM] Sec failed\r\n");
|
||
break;
|
||
|
||
/* All bonds deleted -> restart advertising only if no active connection */
|
||
case PM_EVT_PEERS_DELETE_SUCCEEDED:
|
||
DBG_PRINTF("[BOND] Deleted all (count_after=%lu)\r\n", (unsigned long)pm_peer_count());
|
||
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
|
||
{
|
||
advertising_start(false);
|
||
}
|
||
break;
|
||
|
||
/* PM_EVT_CONN_SEC_CONFIG_REQ -> handled by ble_quick_security */
|
||
|
||
/* Peer data (bonding info) update succeeded -> save peer BLE address */
|
||
case PM_EVT_PEER_DATA_UPDATE_SUCCEEDED:
|
||
{
|
||
return_code = pm_peer_data_bonding_load(p_evt->peer_id, &peer_bonding_data);
|
||
if (return_code == NRF_SUCCESS)
|
||
{
|
||
memcpy(c_addr, peer_bonding_data.peer_ble_id.id_addr_info.addr, sizeof(c_addr));
|
||
|
||
/* Log peer ID and address when new bond is created */
|
||
if (p_evt->params.peer_data_update_succeeded.data_id == PM_PEER_DATA_ID_BONDING)
|
||
{
|
||
DBG_PRINTF("[BOND] Created peer_id=%u addr=%02X:%02X:%02X:%02X:%02X:%02X (count=%lu)\r\n",
|
||
p_evt->peer_id, c_addr[5], c_addr[4], c_addr[3], c_addr[2], c_addr[1], c_addr[0],
|
||
(unsigned long)pm_peer_count());
|
||
}
|
||
}
|
||
m_reset_status = 10; /* Bond complete status */
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Initialize Peer Manager
|
||
*
|
||
* Initialize BLE security module and register event handler.
|
||
* Security level determined by BLE_DEV_MODE (0=passkey required, 1=no security).
|
||
*/
|
||
static void peer_manager_init(void)
|
||
{
|
||
ret_code_t err_code;
|
||
|
||
ble_security_quick_init(BLE_DEV_MODE);
|
||
|
||
err_code = pm_register(pm_evt_handler);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
DBG_PRINTF("[PM] Init (mode=%d)\r\n", BLE_DEV_MODE);
|
||
}
|
||
#endif
|
||
|
||
/*==============================================================================
|
||
* BLE Event Handler
|
||
* Handles all BLE events from the SoftDevice.
|
||
*============================================================================*/
|
||
|
||
/**
|
||
* @brief BLE event handler (SoftDevice observer)
|
||
*
|
||
* Key events handled:
|
||
* - DISCONNECTED: connection lost -> device sleep, state reset
|
||
* - CONNECTED: connection established -> assign QWR handle, set TX power +8dBm
|
||
* - PHY_UPDATE_REQUEST: auto-accept PHY update
|
||
* - TIMEOUT: connection/GATT timeout -> force disconnect
|
||
* - SEC_PARAMS_REQUEST: security parameter request (reject if security unused)
|
||
* - PASSKEY_DISPLAY: display passkey (debug log)
|
||
* - AUTH_KEY_REQUEST: respond with static passkey
|
||
* - HVN_TX_COMPLETE: TX complete -> clear transmission flag
|
||
*/
|
||
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
|
||
{
|
||
uint32_t err_code;
|
||
#if FEATURE_STATIC_PASSKEY
|
||
ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
|
||
#endif
|
||
|
||
#if FEATURE_SECURE_CONNECTION
|
||
if (!ble_security_is_dev_mode())
|
||
{
|
||
pm_handler_secure_on_connection(p_ble_evt);
|
||
}
|
||
#endif
|
||
|
||
switch (p_ble_evt->header.evt_id)
|
||
{
|
||
/* BLE connection lost */
|
||
case BLE_GAP_EVT_DISCONNECTED:
|
||
{
|
||
uint8_t disc_reason = p_ble_evt->evt.gap_evt.params.disconnected.reason;
|
||
|
||
/* Determine unintended disconnect:
|
||
* 0x08 supervision timeout, 0x22 LMP response timeout,
|
||
* 0x3D MIC failure, 0x3E connection failed to be established
|
||
* -> maintain unlimited advertising + block sleep entry
|
||
*/
|
||
bool unintended_disc = (disc_reason == BLE_HCI_CONNECTION_TIMEOUT) ||
|
||
(disc_reason == BLE_HCI_STATUS_CODE_LMP_RESPONSE_TIMEOUT) ||
|
||
(disc_reason == BLE_HCI_CONN_TERMINATED_DUE_TO_MIC_FAILURE)||
|
||
(disc_reason == BLE_HCI_CONN_FAILED_TO_BE_ESTABLISHED);
|
||
|
||
DBG_PRINTF("[BLE] Disconnected (reason 0x%02X)%s\r\n",
|
||
disc_reason, unintended_disc ? " [UNINTENDED]" : "");
|
||
|
||
ble_connection_st = 0;
|
||
m_conn_handle = BLE_CONN_HANDLE_INVALID;
|
||
m_tx_in_progress = false;
|
||
|
||
maa_async_abort(); // Prevent hang caused by async measurement state
|
||
s_tx_pending = false; // Clear pending TX
|
||
|
||
/* Adjust advertising duration at runtime based on disconnect reason */
|
||
(void)sd_ble_gap_adv_stop(m_advertising.adv_handle);
|
||
m_advertising.adv_modes_config.ble_adv_fast_timeout =
|
||
unintended_disc ? APP_ADV_DURATION_UNLIMITED : APP_ADV_DURATION_NORMAL;
|
||
|
||
ret_code_t adv_err = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
|
||
if (adv_err != NRF_SUCCESS && adv_err != NRF_ERROR_INVALID_STATE)
|
||
{
|
||
APP_ERROR_CHECK(adv_err);
|
||
}
|
||
|
||
/* Unintended disconnect: block sleep entry to ensure continuous advertising */
|
||
if (!unintended_disc && device_status == true)
|
||
{
|
||
if (device_sleep_mode() == 0)
|
||
{
|
||
device_status = false;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case BLE_GAP_EVT_CONNECTED:
|
||
DBG_PRINTF("[BLE] Connected\r\n");
|
||
|
||
#if FEATURE_SECURE_CONNECTION
|
||
ble_connection_st = 1;
|
||
battery_timer_start();
|
||
#endif
|
||
|
||
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
|
||
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
|
||
APP_ERROR_CHECK(err_code);
|
||
|
||
sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_CONN, m_conn_handle, 4);
|
||
|
||
// Request 2M PHY (falls back to 1M automatically if unsupported)
|
||
{
|
||
ble_gap_phys_t const phys = {
|
||
.rx_phys = BLE_GAP_PHY_2MBPS,
|
||
.tx_phys = BLE_GAP_PHY_2MBPS,
|
||
};
|
||
err_code = sd_ble_gap_phy_update(m_conn_handle, &phys);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
led_set_state(LED_STATE_OFF); /* Connection complete -> LED OFF */
|
||
|
||
break;
|
||
|
||
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
|
||
{
|
||
ble_gap_phys_t const phys = {
|
||
.rx_phys = BLE_GAP_PHY_AUTO,
|
||
.tx_phys = BLE_GAP_PHY_AUTO,
|
||
};
|
||
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
break;
|
||
|
||
case BLE_GAP_EVT_PHY_UPDATE:
|
||
{
|
||
ble_gap_evt_phy_update_t const * p_phy = &p_ble_evt->evt.gap_evt.params.phy_update;
|
||
DBG_PRINTF("[BLE] PHY updated: TX=%s, RX=%s\r\n",
|
||
p_phy->tx_phy == BLE_GAP_PHY_2MBPS ? "2M" : "1M",
|
||
p_phy->rx_phy == BLE_GAP_PHY_2MBPS ? "2M" : "1M");
|
||
}
|
||
break;
|
||
|
||
case BLE_GATTC_EVT_TIMEOUT:
|
||
case BLE_GATTS_EVT_TIMEOUT:
|
||
DBG_PRINTF("[BLE] GATT Timeout -> disconnect\r\n");
|
||
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gap_evt.conn_handle,
|
||
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
|
||
APP_ERROR_CHECK(err_code);
|
||
break;
|
||
|
||
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
|
||
#if !FEATURE_SECURE_CONNECTION
|
||
err_code = sd_ble_gap_sec_params_reply(m_conn_handle,
|
||
BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP,
|
||
NULL, NULL);
|
||
APP_ERROR_CHECK(err_code);
|
||
#else
|
||
if (ble_security_is_dev_mode()) {
|
||
err_code = sd_ble_gap_sec_params_reply(m_conn_handle,
|
||
BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP,
|
||
NULL, NULL);
|
||
APP_ERROR_CHECK(err_code);
|
||
DBG_PRINTF("DEV: Rejected security request\r\n");
|
||
}
|
||
#endif
|
||
break;
|
||
|
||
#if FEATURE_SECURE_CONNECTION
|
||
case BLE_GAP_EVT_PASSKEY_DISPLAY:
|
||
{
|
||
char passkey[PASSKEY_LENGTH + 1];
|
||
memcpy(passkey, p_ble_evt->evt.gap_evt.params.passkey_display.passkey, PASSKEY_LENGTH);
|
||
passkey[PASSKEY_LENGTH] = 0;
|
||
DBG_PRINTF("[BLE] Passkey: %s\r\n", passkey);
|
||
}
|
||
break;
|
||
|
||
case BLE_GAP_EVT_AUTH_KEY_REQUEST:
|
||
#if FEATURE_STATIC_PASSKEY
|
||
if (p_gap_evt->params.auth_key_request.key_type == BLE_GAP_AUTH_KEY_TYPE_PASSKEY)
|
||
{
|
||
err_code = sd_ble_gap_auth_key_reply(p_gap_evt->conn_handle,
|
||
BLE_GAP_AUTH_KEY_TYPE_PASSKEY,
|
||
(const uint8_t *)m_static_passkey);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
#endif
|
||
break;
|
||
|
||
case BLE_GAP_EVT_LESC_DHKEY_REQUEST:
|
||
break;
|
||
#endif
|
||
|
||
case BLE_GATTS_EVT_HVN_TX_COMPLETE:
|
||
m_tx_in_progress = false;
|
||
m_tx_complete_pending = false; /* Notify waiting functions of TX completion */
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
/*==============================================================================
|
||
* Utility Functions
|
||
*============================================================================*/
|
||
|
||
/** @brief LED init + erase_bonds default (boot Phase 5) */
|
||
static void buttons_leds_init(bool * p_erase_bonds)
|
||
{
|
||
led_init();
|
||
*p_erase_bonds = false;
|
||
}
|
||
|
||
static void log_init(void)
|
||
{
|
||
ret_code_t err_code = NRF_LOG_INIT(NULL);
|
||
APP_ERROR_CHECK(err_code);
|
||
NRF_LOG_DEFAULT_BACKENDS_INIT();
|
||
}
|
||
|
||
/**
|
||
* @brief UART receive event handler
|
||
*
|
||
* Accumulates bytes received from physical UART (1Mbps) into a buffer.
|
||
* On receiving '\n' or '\r', passes data to received_command_process().
|
||
* Used for debug and factory testing.
|
||
*/
|
||
void uart_event_handle(app_uart_evt_t * p_event)
|
||
{
|
||
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN] = {0};
|
||
static uint8_t index = 0;
|
||
|
||
switch (p_event->evt_type)
|
||
{
|
||
case APP_UART_DATA_READY:
|
||
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
|
||
index++;
|
||
|
||
if ((data_array[index - 1] == '\n') || (data_array[index - 1] == '\r') || (index >= m_ble_nus_max_data_len))
|
||
{
|
||
if (index > 1)
|
||
{
|
||
cmd_type_t = CMD_UART;
|
||
ble_got_new_data = true;
|
||
dr_cmd_parser(data_array, index);
|
||
}
|
||
index = 0;
|
||
}
|
||
break;
|
||
|
||
case APP_UART_COMMUNICATION_ERROR:
|
||
break;
|
||
|
||
case APP_UART_FIFO_ERROR:
|
||
APP_ERROR_HANDLER(p_event->data.error_code);
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/** @brief UART init (1Mbps, no flow control, no parity) -- currently unused (power saving) */
|
||
#if 0
|
||
static void uart_init(void)
|
||
{
|
||
uint32_t err_code;
|
||
app_uart_comm_params_t const comm_params =
|
||
{
|
||
.rx_pin_no = RX_PIN_NUMBER,
|
||
.tx_pin_no = TX_PIN_NUMBER,
|
||
.rts_pin_no = RTS_PIN_NUMBER,
|
||
.cts_pin_no = CTS_PIN_NUMBER,
|
||
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
|
||
.use_parity = false,
|
||
#if defined (UART_PRESENT)
|
||
.baud_rate = NRF_UART_BAUDRATE_1000000
|
||
#else
|
||
.baud_rate = NRF_UARTE_BAUDRATE_1000000
|
||
#endif
|
||
};
|
||
|
||
APP_UART_FIFO_INIT(&comm_params,
|
||
UART_RX_BUF_SIZE,
|
||
UART_TX_BUF_SIZE,
|
||
uart_event_handle,
|
||
APP_IRQ_PRIORITY_LOWEST,
|
||
err_code);
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
#endif
|
||
|
||
static void power_management_init(void)
|
||
{
|
||
ret_code_t err_code;
|
||
err_code = nrf_pwr_mgmt_init();
|
||
APP_ERROR_CHECK(err_code);
|
||
}
|
||
|
||
/**
|
||
* @brief Idle state processing
|
||
*
|
||
* Process BLE security (LESC) requests, flush logs, then
|
||
* put the CPU into low-power state via nrf_pwr_mgmt_run().
|
||
* Automatically wakes on BLE events.
|
||
*/
|
||
static void idle_state_handle(void)
|
||
{
|
||
#if FEATURE_SECURE_CONNECTION
|
||
ret_code_t err_code;
|
||
err_code = nrf_ble_lesc_request_handler();
|
||
APP_ERROR_CHECK(err_code);
|
||
#endif
|
||
|
||
if (NRF_LOG_PROCESS() == false)
|
||
{
|
||
nrf_pwr_mgmt_run();
|
||
}
|
||
}
|
||
|
||
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
|
||
{
|
||
app_error_handler(DEAD_BEEF, line_num, p_file_name);
|
||
}
|
||
|
||
/**
|
||
* @brief Enter sleep mode
|
||
*
|
||
* Indicate to user via LED, then start 3s (POWER_OFF_DELAY) wait timer.
|
||
* On timer expiry, t_power_off_timeout_handler() cuts physical power.
|
||
*/
|
||
void sleep_mode_enter(void)
|
||
{
|
||
led_set_state(LED_STATE_POWER_OFF);
|
||
DBG_PRINTF("[SYS] Sleep\r\n");
|
||
APP_ERROR_CHECK(app_timer_start(m_power_off_delay_timer_id, APP_TIMER_TICKS(POWER_OFF_DELAY), NULL));
|
||
}
|
||
|
||
/**
|
||
* @brief Device power off
|
||
*
|
||
* Indicate to user via LED, then start 3s wait timer.
|
||
* Cuts physical power using the same mechanism as sleep_mode_enter().
|
||
*/
|
||
void device_power_off(void)
|
||
{
|
||
led_set_state(LED_STATE_POWER_OFF);
|
||
APP_ERROR_CHECK(app_timer_start(m_power_off_delay_timer_id, APP_TIMER_TICKS(POWER_OFF_DELAY), NULL));
|
||
}
|
||
|
||
/*==============================================================================
|
||
* Data Transmission Functions
|
||
* Transmit sensor data/responses to the smartphone app via BLE NUS.
|
||
* Packet structure: [data][CRC16 2 bytes]
|
||
*============================================================================*/
|
||
|
||
/**
|
||
* @brief ASCII text BLE transmission
|
||
*
|
||
* Copy string content up to '\r', append CRC16, and send via BLE.
|
||
* Returns immediately if a transmission is already in progress (m_tx_in_progress).
|
||
*/
|
||
void data_tx_handler(char const *p_data_to_send)
|
||
{
|
||
if (m_tx_in_progress)
|
||
{
|
||
return;
|
||
}
|
||
|
||
char const *p_end_char = strchr(p_data_to_send, '\r');
|
||
if (p_end_char == NULL)
|
||
{
|
||
return;
|
||
}
|
||
|
||
uint16_t data_len = p_end_char - p_data_to_send;
|
||
if (data_len > (BLE_NUS_MAX_DATA_LEN - 2))
|
||
{
|
||
return;
|
||
}
|
||
|
||
memcpy(m_tx_buffer, p_data_to_send, data_len);
|
||
uint16_t crc = crc16_compute(m_tx_buffer, data_len, NULL);
|
||
m_tx_buffer[data_len] = (uint8_t)(crc & 0xFF);
|
||
m_tx_buffer[data_len + 1] = (uint8_t)((crc >> 8) & 0xFF);
|
||
m_tx_len = data_len + 2;
|
||
|
||
if (ble_connection_st == BLE_CONNECTED_ST)
|
||
{
|
||
m_tx_in_progress = true;
|
||
uint32_t err_code = ble_nus_data_send(&m_nus, m_tx_buffer, &m_tx_len, m_conn_handle);
|
||
|
||
if (err_code == NRF_SUCCESS)
|
||
{
|
||
// OK
|
||
}
|
||
else if (err_code == NRF_ERROR_RESOURCES)
|
||
{
|
||
// Retry later
|
||
}
|
||
else if (err_code == NRF_ERROR_INVALID_STATE || err_code == NRF_ERROR_NOT_FOUND)
|
||
{
|
||
ble_connection_st = BLE_DISCONNECTED_ST;
|
||
m_conn_handle = BLE_CONN_HANDLE_INVALID;
|
||
m_tx_in_progress = false;
|
||
}
|
||
else
|
||
{
|
||
DBG_PRINTF("[BLE TX] Err:0x%X\r\n", err_code); // Log instead of APP_ERROR_CHECK - jhChun 26.03.16
|
||
m_tx_in_progress = false;
|
||
//APP_ERROR_CHECK(err_code);
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Format single uint16_t value into binary packet
|
||
*
|
||
* Packet structure: [tag 4 bytes][value 2 bytes] = 6 bytes total (3 words).
|
||
* Tag is 4 ASCII chars (e.g. "rta:", "rsn:"), value stored big-endian.
|
||
*/
|
||
void single_format_data(uint8_t *buffer, const char *tag, const uint16_t value)
|
||
{
|
||
uint16_t tag1 = ((uint16_t)tag[1] << 8) | (uint16_t)tag[0];
|
||
uint16_t tag2 = ((uint16_t)tag[3] << 8) | (uint16_t)tag[2];
|
||
|
||
buffer[0] = (uint8_t)(tag1 & 0xFF);
|
||
buffer[1] = (uint8_t)((tag1 >> 8) & 0xFF);
|
||
buffer[2] = (uint8_t)(tag2 & 0xFF);
|
||
buffer[3] = (uint8_t)((tag2 >> 8) & 0xFF);
|
||
buffer[5] = (uint8_t)(value & 0xFF);
|
||
buffer[4] = (uint8_t)((value >> 8) & 0xFF);
|
||
}
|
||
|
||
/**
|
||
* @brief Format uint16_t array into binary packet
|
||
*
|
||
* Packet structure: [tag 4 bytes][data0 2 bytes][data1 2 bytes]...
|
||
* Each value stored big-endian; length is array element count, not byte count.
|
||
*/
|
||
void format_data(uint8_t *buffer, const char *tag, const uint16_t *data_array, size_t length)
|
||
{
|
||
uint16_t tag1 = ((uint16_t)tag[1] << 8) | (uint16_t)tag[0];
|
||
uint16_t tag2 = ((uint16_t)tag[3] << 8) | (uint16_t)tag[2];
|
||
|
||
buffer[0] = (uint8_t)(tag1 & 0xFF);
|
||
buffer[1] = (uint8_t)((tag1 >> 8) & 0xFF);
|
||
buffer[2] = (uint8_t)(tag2 & 0xFF);
|
||
buffer[3] = (uint8_t)((tag2 >> 8) & 0xFF);
|
||
|
||
for (size_t i = 0; i < length; i++)
|
||
{
|
||
buffer[4 + i * 2 + 1] = (uint8_t)(data_array[i] & 0xFF);
|
||
buffer[4 + i * 2] = (uint8_t)((data_array[i] >> 8) & 0xFF);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Format uint8_t byte array into binary packet
|
||
*
|
||
* Packet structure: [tag 4 bytes][byte0][byte1]...
|
||
*/
|
||
void format_data_byte(uint8_t *buffer, const char *tag, const uint8_t *data_array, size_t length)
|
||
{
|
||
uint16_t tag1 = ((uint16_t)tag[1] << 8) | (uint16_t)tag[0];
|
||
uint16_t tag2 = ((uint16_t)tag[3] << 8) | (uint16_t)tag[2];
|
||
|
||
buffer[0] = (uint8_t)(tag1 & 0xFF);
|
||
buffer[1] = (uint8_t)((tag1 >> 8) & 0xFF);
|
||
buffer[2] = (uint8_t)(tag2 & 0xFF);
|
||
buffer[3] = (uint8_t)((tag2 >> 8) & 0xFF);
|
||
|
||
for (size_t i = 0; i < length; i++)
|
||
{
|
||
buffer[4 + i] = (uint8_t)(data_array[i] & 0xFF);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief Format ASCII string into binary packet
|
||
*
|
||
* Packet structure: [tag 4 bytes][char0][char1]...
|
||
* Used for transmitting serial number, passkey, firmware version, etc.
|
||
*/
|
||
void ascii_format_data(uint8_t *buffer, const char *tag, const char *data_ascii, size_t length)
|
||
{
|
||
uint16_t tag1 = ((uint16_t)tag[1] << 8) | (uint16_t)tag[0];
|
||
uint16_t tag2 = ((uint16_t)tag[3] << 8) | (uint16_t)tag[2];
|
||
|
||
buffer[0] = (uint8_t)(tag1 & 0xFF);
|
||
buffer[1] = (uint8_t)((tag1 >> 8) & 0xFF);
|
||
buffer[2] = (uint8_t)(tag2 & 0xFF);
|
||
buffer[3] = (uint8_t)((tag2 >> 8) & 0xFF);
|
||
|
||
for (size_t i = 0; i < length; i++)
|
||
{
|
||
buffer[4 + i] = (uint8_t)(data_ascii[i] & 0xFF);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief BLE binary safe transmission (preamble for dr_binary_tx_safe)
|
||
*
|
||
* On NRF_ERROR_RESOURCES (TX queue full), retries at 5ms intervals.
|
||
* Returns gracefully on connection errors.
|
||
*
|
||
* @param ble_bin_buff Data buffer to transmit
|
||
* @param length uint16_t word count (actual bytes = length * 2)
|
||
*/
|
||
|
||
/**
|
||
* @brief Safe delay for BLE operations
|
||
*
|
||
* Uses interrupt-safe nrf_delay_ms().
|
||
* BLE stack runs on interrupts, so TX complete events are processed during delay.
|
||
*
|
||
* Note: Do NOT use __WFE() or sd_app_evt_wait() here!
|
||
* It conflicts with SoftDevice power management.
|
||
*
|
||
* @param ms Delay time in milliseconds
|
||
*/
|
||
void dr_sd_delay_ms(uint32_t ms)
|
||
{
|
||
if (ms == 0) return;
|
||
nrf_delay_ms(ms);
|
||
}
|
||
|
||
extern int SEGGER_RTT_vprintf(unsigned, const char *, va_list *);
|
||
static void log_printf(const char *fmt, ...)
|
||
{
|
||
va_list args;
|
||
va_start(args, fmt);
|
||
SEGGER_RTT_vprintf(0, fmt, &args);
|
||
va_end(args);
|
||
}
|
||
|
||
void param_error(const char *cmd)
|
||
{
|
||
char resp_error[4];
|
||
resp_error[0] = 'r';
|
||
resp_error[1] = cmd[1];
|
||
resp_error[2] = cmd[2];
|
||
resp_error[3] = '!';
|
||
|
||
single_format_data(ble_bin_buffer, resp_error, 65533); /* err_code3 */
|
||
dr_binary_tx_safe(ble_bin_buffer, 3);
|
||
}
|
||
|
||
void dr_binary_tx_safe(uint8_t const *ble_bin_buff, uint16_t length)
|
||
{
|
||
uint32_t err_code;
|
||
static uint8_t tx_buffer[BLE_NUS_MAX_DATA_LEN] = {0};
|
||
uint16_t retry_count = 0;
|
||
const uint16_t MAX_RETRIES = 20; /* Max retries: 2ms x 20 = 40ms (was 5ms x 100 = 500ms) */
|
||
|
||
if (ble_connection_st == 0) return;
|
||
|
||
if (length * sizeof(uint16_t) > (BLE_NUS_MAX_DATA_LEN - 2)) return;
|
||
|
||
if (ble_connection_st == BLE_CONNECTED_ST)
|
||
{
|
||
memcpy(tx_buffer, ble_bin_buff, length * sizeof(uint16_t));
|
||
uint16_t crc = crc16_compute(tx_buffer, length * sizeof(uint16_t), NULL);
|
||
tx_buffer[length * sizeof(uint16_t)] = (uint8_t)(crc & 0xFF);
|
||
tx_buffer[length * sizeof(uint16_t) + 1] = (uint8_t)((crc >> 8) & 0xFF);
|
||
|
||
uint16_t total_len = length * sizeof(uint16_t) + 2;
|
||
|
||
do
|
||
{
|
||
uint16_t send_len = total_len;
|
||
err_code = ble_nus_data_send(&m_nus, tx_buffer, &send_len, m_conn_handle);
|
||
|
||
if (err_code == NRF_SUCCESS)
|
||
{
|
||
return;
|
||
}
|
||
else if (err_code == NRF_ERROR_RESOURCES)
|
||
{
|
||
nrf_delay_ms(2); /* Was 5ms -> 2ms */
|
||
retry_count++;
|
||
}
|
||
else if (err_code == NRF_ERROR_INVALID_STATE || err_code == NRF_ERROR_NOT_FOUND)
|
||
{
|
||
DBG_PRINTF("[BLE TX] Disconnected\r\n");
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
DBG_PRINTF("[BLE TX] Err:0x%X\r\n", err_code);
|
||
return;
|
||
}
|
||
} while (retry_count < MAX_RETRIES);
|
||
|
||
if (retry_count >= MAX_RETRIES)
|
||
{
|
||
DBG_PRINTF("[BLE TX] FAIL %u retries\r\n", retry_count);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*==============================================================================
|
||
* Power Button State Machine (main_s)
|
||
*
|
||
* Called repeatedly by a 5ms single-shot timer (m_power_on_delay_timer).
|
||
*
|
||
* [Boot phase] (booted == false)
|
||
* - cnt_s < 400 (< 2s): short press -> power OFF
|
||
* - cnt_s >= 400 (~2s): normal boot sequence start
|
||
* - cnt_s > 1000 (~5s): factory reset (passkey reset + power OFF)
|
||
* - m_reset_status == 2: reboot after software reset
|
||
*
|
||
* [Running phase] (booted == true)
|
||
* - Button pressed 2s (cnt_s >= 400): power OFF
|
||
* - Button released: reset counter, keep polling
|
||
*============================================================================*/
|
||
static bool booted = false;
|
||
|
||
static void main_s(void * p_context)
|
||
{
|
||
UNUSED_PARAMETER(p_context);
|
||
APP_ERROR_CHECK(app_timer_stop(m_power_on_delay_timer_id));
|
||
|
||
bool button_released = nrf_gpio_pin_read(POWER_BUTTON);
|
||
|
||
/* ---- Running phase: post-boot button polling ---- */
|
||
if (booted)
|
||
{
|
||
if (!button_released)
|
||
{
|
||
cnt_s++;
|
||
if (cnt_s == 400) /* 400 x 5ms = 2s */
|
||
{
|
||
DBG_PRINTF("[BTN] Power OFF\r\n");
|
||
led_set_state(LED_STATE_POWER_OFF);
|
||
go_device_power_off = true;
|
||
main_timer_start();
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
cnt_s = 0;
|
||
}
|
||
timers_start();
|
||
return;
|
||
}
|
||
|
||
/* ---- Boot phase ---- */
|
||
if (button_released)
|
||
{
|
||
if ((cnt_s < 250) && (m_reset_status != 2))
|
||
{
|
||
led_set_state(LED_STATE_OFF);
|
||
power_control_handler(OFF);
|
||
cnt_s = 0;
|
||
}
|
||
else if (cnt_s >= 3000) /* 3000 x 5ms = 15s */
|
||
{
|
||
DBG_PRINTF("[BTN] Bond Delete\r\n");
|
||
power_control_handler(ON);
|
||
nrf_delay_ms(100);
|
||
bond_data_delete = true;
|
||
m_config.bond_data_delete = (uint8_t)bond_data_delete;
|
||
config_save();
|
||
nrf_delay_ms(1000);
|
||
go_device_power_off = true;
|
||
main_timer_start();
|
||
}
|
||
else if (cnt_s > 250 || (m_reset_status == 2)) /* 250 x 5ms = 1.25s + α */
|
||
{
|
||
DBG_PRINTF("[BTN] Boot (cnt=%d)\r\n", cnt_s);
|
||
device_reset = false;
|
||
|
||
power_control_handler(ON);
|
||
battery_timer_start();
|
||
|
||
#if FEATURE_SECURE_CONNECTION
|
||
/* DEV mode: bonds already deleted in ble_security_quick_init() -> prevent duplicate */
|
||
advertising_start(!ble_security_is_dev_mode() && (erase_bonds || bond_data_delete));
|
||
#else
|
||
advertising_start();
|
||
#endif
|
||
DBG_PRINTF("[BOOT] ADV started\r\n");
|
||
m_reset_status = 1;
|
||
DBG_PRINTF("[BOOT] Ready\r\n");
|
||
|
||
/* Boot complete -> switch to running phase */
|
||
booted = true;
|
||
cnt_s = 0;
|
||
timers_start();
|
||
}
|
||
}
|
||
else
|
||
{
|
||
cnt_s++;
|
||
device_reset = false;
|
||
|
||
if (cnt_s == 250) /* 250 x 5ms = 1.25s + α */
|
||
{
|
||
led_set_state(LED_STATE_POWER_ON);
|
||
DBG_PRINTF("[BTN] 2.0s\r\n");
|
||
}
|
||
|
||
timers_start();
|
||
}
|
||
}
|
||
|
||
/*==============================================================================
|
||
* Main Function
|
||
*
|
||
* Performs system initialization in phases (Phase 0~9), then enters infinite loop.
|
||
* In the loop, idle_state_handle() keeps the CPU in low-power state,
|
||
* waking on BLE/timer interrupts to process events.
|
||
*============================================================================*/
|
||
int main(void)
|
||
{
|
||
bool erase_bonds_local = false;
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Phase 1: Basic hardware init (BLE-independent)
|
||
*
|
||
* - Power self-latch (P0.8 HIGH)
|
||
* - RTT log output
|
||
* - GPIO (power button input)
|
||
* - App timers (power polling, battery, main loop)
|
||
* - Default config (serial number, passkey)
|
||
* - Buttons/LEDs
|
||
*────────────────────────────────────────────────────────────*/
|
||
power_hold_init();
|
||
|
||
if (power_off_duble_prohibit)
|
||
{
|
||
return 0;
|
||
}
|
||
cnt_s = 0;
|
||
|
||
log_init();
|
||
|
||
DBG_PRINTF("\r\n========================================\r\n");
|
||
DBG_PRINTF(" Medithings v1.17\r\n");
|
||
DBG_PRINTF("========================================\r\n");
|
||
|
||
DBG_PRINTF("[1] HW Init\r\n");
|
||
gpio_init();
|
||
info4 = false;
|
||
timers_init();
|
||
load_default_config();
|
||
buttons_leds_init(&erase_bonds_local);
|
||
#if FEATURE_SECURE_CONNECTION
|
||
erase_bonds = erase_bonds_local;
|
||
#endif
|
||
DBG_PRINTF(" gpio/timer/config/btn OK\r\n");
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Phase 2: BLE stack init
|
||
*
|
||
* - Power management module (WFE/sleep when idle)
|
||
* - SoftDevice S140 (BLE 5.0 protocol stack)
|
||
* - DC-DC converter enable (required after SoftDevice)
|
||
*────────────────────────────────────────────────────────────*/
|
||
DBG_PRINTF("[2] BLE Stack\r\n");
|
||
power_management_init();
|
||
ble_stack_init();
|
||
APP_ERROR_CHECK(sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE));
|
||
DBG_PRINTF(" pwr/stack/dcdc OK\r\n");
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Phase 3: Internal flash config (must init after BLE stack)
|
||
*
|
||
* - FDS (Flash Data Storage) init
|
||
* - Read stored config from flash (serial, passkey, piezo, etc.)
|
||
* - Overwrite defaults with flash values
|
||
*────────────────────────────────────────────────────────────*/
|
||
DBG_PRINTF("[3] FDS\r\n");
|
||
fs_storage_init();
|
||
config_load();
|
||
load_flash_config();
|
||
DBG_PRINTF(" fds OK\r\n");
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Phase 4: BLE protocol setup
|
||
*
|
||
* - GAP: device name (serial number), connection params, passkey
|
||
* - GATT: MTU size negotiation
|
||
* - Services: NUS (Nordic UART Service), QWR, DFU
|
||
* - Advertising: advertising data (name, UUID)
|
||
* - Connection parameter negotiation module
|
||
* - Security: Peer Manager (bonding/passkey)
|
||
*────────────────────────────────────────────────────────────*/
|
||
DBG_PRINTF("[4] BLE Protocol\r\n");
|
||
gap_params_init();
|
||
gatt_init();
|
||
services_init();
|
||
advertising_init();
|
||
conn_params_init();
|
||
#if FEATURE_SECURE_CONNECTION
|
||
peer_manager_init();
|
||
|
||
/* Log bond state at boot time */
|
||
{
|
||
uint32_t bond_count = pm_peer_count();
|
||
DBG_PRINTF("[BOOT] Bond state: count=%lu flag_delete=%d erase_bonds=%d\r\n",
|
||
(unsigned long)bond_count, bond_data_delete, erase_bonds);
|
||
if (bond_count > 0)
|
||
{
|
||
pm_peer_id_t pid = pm_next_peer_id_get(PM_PEER_ID_INVALID);
|
||
while (pid != PM_PEER_ID_INVALID)
|
||
{
|
||
DBG_PRINTF("[BOOT] Bonded peer id=%u\r\n", pid);
|
||
pid = pm_next_peer_id_get(pid);
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
DBG_PRINTF(" gap/gatt/svc/adv/conn/sec OK\r\n");
|
||
|
||
if (m_need_save_defaults)
|
||
{
|
||
config_save();
|
||
m_need_save_defaults = false;
|
||
DBG_PRINTF(" fds defaults saved\r\n");
|
||
}
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Phase 5: Application init
|
||
*
|
||
* - Command parser: process BLE received commands (log, BLE TX, CRC)
|
||
* - Piezo driver: GPIO/Timer/PPI setup for ultrasound measurement
|
||
* - IMU (ICM42670P) is NOT initialized here
|
||
* -> imu_read_direct() self-configures/reads/sleeps on each msp? command
|
||
*────────────────────────────────────────────────────────────*/
|
||
DBG_PRINTF("[5] App\r\n");
|
||
g_plat.log = log_printf;
|
||
g_plat.tx_bin = dr_binary_tx_safe;
|
||
g_plat.crc_check = true;
|
||
g_log_enable = true;
|
||
cmd_table_init(); /* Inject command table into parser */
|
||
dr_piezo_init();
|
||
DBG_PRINTF(" parser/piezo OK\r\n");
|
||
|
||
/*──────────────────────────────────────────────────────────────
|
||
* Boot complete -> start power button state machine
|
||
*────────────────────────────────────────────────────────────*/
|
||
DBG_PRINTF("\r\n========================================\r\n");
|
||
DBG_PRINTF(" READY [%s]\r\n", SERIAL_NO);
|
||
DBG_PRINTF("========================================\r\n\r\n");
|
||
|
||
timers_start();
|
||
|
||
// MAIN LOOP
|
||
for (;;)
|
||
{
|
||
/* Process command received in BLE callback here (prevents blocking) */
|
||
if (pending_cmd_len > 0)
|
||
{
|
||
uint8_t len = pending_cmd_len;
|
||
pending_cmd_len = 0;
|
||
dr_cmd_parser((const uint8_t *)pending_cmd_buf, len);
|
||
}
|
||
|
||
idle_state_handle();
|
||
}
|
||
}
|