a8ba31871e
- BLE peripheral applications - dr_piezo and bladder_patch projects Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
/*******************************************************************************
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* @file pulse_gen.c
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* @brief PWM Pulse Generator (Build-safe version)
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* @author CandyPops Co. / ??? ????
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* @version V1.0.1
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* @date 2025-10-13
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******************************************************************************/
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#define SKIP_PWM // ? ?? ???? PWM ?? ???
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#include "pulse_gen.h"
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#include "debug_print.h"
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#include "app_timer.h"
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#include "nrf_log.h"
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#ifdef SKIP_PWM
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/* ========================================================================== */
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/* PWM ?? ???? Stub ?? */
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/* ========================================================================== */
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ret_code_t pulse_gen_init(void)
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{
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DBG_PRINTF("[PWM] skipped init\r\n");
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return NRF_SUCCESS;
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}
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void pulse_gen_start(void)
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{
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DBG_PRINTF("[PWM] skipped start\r\n");
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}
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void pulse_gen_stop(void)
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{
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DBG_PRINTF("[PWM] skipped stop\r\n");
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}
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#else /* ==================================================================== */
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/* ?? PWM ?? ?? (SKIP_PWM ?? ?? ? ???) */
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/* ========================================================================== */
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#include "nrfx_pwm.h"
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/* --- Configuration --- */
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#define PULSE_PIN_1 28
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#define PULSE_PIN_2 29
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#define PULSE_PIN_3 30
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#define PULSE_DELAY_MS 10
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#define PWM_INSTANCE_ID 0
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#define PWM_TOP_VALUE 8
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#define SEQUENCE_LENGTH 6
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static nrfx_pwm_t m_pwm = NRFX_PWM_INSTANCE(PWM_INSTANCE_ID);
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APP_TIMER_DEF(m_pulse_delay_timer_id);
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static volatile bool m_pulses_running = false;
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static nrf_pwm_values_individual_t m_pulse_seq_values[SEQUENCE_LENGTH];
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static nrf_pwm_sequence_t const m_pulse_sequence =
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{
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.values.p_individual = m_pulse_seq_values,
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.length = NRF_PWM_VALUES_LENGTH(m_pulse_seq_values),
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.repeats = 0,
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.end_delay = 0
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};
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/* -------------------------------------------------------------------------- */
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/* Local Handlers */
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/* -------------------------------------------------------------------------- */
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static void prepare_pulse_sequence(void)
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{
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m_pulse_seq_values[0].channel_0 = PWM_TOP_VALUE; m_pulse_seq_values[0].channel_1 = 0; m_pulse_seq_values[0].channel_2 = 0;
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m_pulse_seq_values[1].channel_0 = 0; m_pulse_seq_values[1].channel_1 = PWM_TOP_VALUE; m_pulse_seq_values[1].channel_2 = 0;
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m_pulse_seq_values[2].channel_0 = PWM_TOP_VALUE; m_pulse_seq_values[2].channel_1 = 0; m_pulse_seq_values[2].channel_2 = 0;
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m_pulse_seq_values[3].channel_0 = 0; m_pulse_seq_values[3].channel_1 = PWM_TOP_VALUE; m_pulse_seq_values[3].channel_2 = 0;
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m_pulse_seq_values[4].channel_0 = 0; m_pulse_seq_values[4].channel_1 = 0; m_pulse_seq_values[4].channel_2 = 0;
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m_pulse_seq_values[5].channel_0 = 0; m_pulse_seq_values[5].channel_1 = 0; m_pulse_seq_values[5].channel_2 = PWM_TOP_VALUE;
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}
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static void pulse_delay_timeout_handler(void * p_context)
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{
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if (m_pulses_running)
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{
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(void)nrfx_pwm_simple_playback(&m_pwm, &m_pulse_sequence, 1, NRFX_PWM_FLAG_STOP);
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(void)app_timer_start(m_pulse_delay_timer_id, APP_TIMER_TICKS(PULSE_DELAY_MS), NULL);
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}
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}
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/* -------------------------------------------------------------------------- */
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/* Public Functions */
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/* -------------------------------------------------------------------------- */
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ret_code_t pulse_gen_init(void)
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{
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ret_code_t err_code;
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prepare_pulse_sequence();
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nrfx_pwm_config_t const config =
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{
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.output_pins =
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{
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PULSE_PIN_1,
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PULSE_PIN_2,
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PULSE_PIN_3,
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NRFX_PWM_PIN_NOT_USED
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},
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.irq_priority = NRFX_PWM_DEFAULT_CONFIG_IRQ_PRIORITY,
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.base_clock = NRF_PWM_CLK_16MHz,
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.count_mode = NRF_PWM_MODE_UP,
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.top_value = PWM_TOP_VALUE,
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.load_mode = NRF_PWM_LOAD_INDIVIDUAL,
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.step_mode = NRF_PWM_STEP_AUTO
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};
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err_code = nrfx_pwm_init(&m_pwm, &config, NULL);
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if (err_code != NRF_SUCCESS)
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return err_code;
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err_code = app_timer_create(&m_pulse_delay_timer_id,
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APP_TIMER_MODE_SINGLE_SHOT,
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pulse_delay_timeout_handler);
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return err_code;
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}
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void pulse_gen_start(void)
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{
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if (m_pulses_running) return;
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m_pulses_running = true;
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pulse_delay_timeout_handler(NULL);
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}
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void pulse_gen_stop(void)
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{
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m_pulses_running = false;
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app_timer_stop(m_pulse_delay_timer_id);
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nrfx_pwm_stop(&m_pwm, true);
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}
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#endif /* SKIP_PWM */
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