114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/*******************************************************************************
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* @file ada2200_spi.c
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* @author CandyPops Co.
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* @version V1.0.1
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* @date 2022-09-05
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* @brief ADA2200 Lock-in Amplifier SPI driver (uses shared SPI2 bus)
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******************************************************************************/
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#include "sdk_common.h"
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#include <stdbool.h>
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#include "nrf.h"
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#include "nrf_gpio.h"
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#include "app_error.h"
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#include "boards.h"
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#include "nrf_delay.h"
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#include "nrf_log.h"
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#include "ada2200_spi.h"
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#include "spi2_bus.h" /* Shared SPI2 bus */
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#include "debug_print.h"
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/* Use CS pin from shared bus definition */
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#define ADA2200_CS_PIN SPI2_CS_ADA2200
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//static uint8_t ada2200_startR[] ={ 0x00, 0x00, 0x81 }; /* {addr 16bit, data}, Reset for Defaults */
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static uint8_t ada2200_start0[] ={ 0x00, 0x00, 0x18 }; /* {addr 16bit, data}, Set SDIO input only, Activate SDO */
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static uint8_t ada2200_start1[] ={ 0x00, 0x2B, 0x06 }; /* {addr 16bit, data}, Clock Configuration */
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static uint8_t ada2200_start2[] ={ 0x00, 0x2A, 0x18 }; /* {addr 16bit, data}, Enable Mixer, Select SDO output for Pin 13, OFF RCLK. */
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static uint8_t ada2200_start3[] ={ 0x00, 0x29, 0x23 }; /* 0x27 {addr 16bit, data}, Disable SYNCO output, Select SYNCO edge location (Sync timing adjustment) */
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static uint8_t ada2200_start4[] ={ 0x00, 0x2C, 0x01 }; /* {addr 16bit, data}, Enable RCLK output */
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static uint8_t ada2200_stop0[] ={ 0x00, 0x00, 0x18 }; /* {addr 16bit, data}, Set SDIO input only, Activate SDO */
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static uint8_t ada2200_stop1[] ={ 0x00, 0x2B, 0x06 }; /* {addr 16bit, data}, Clock Configuration */
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static uint8_t ada2200_stop2[] ={ 0x00, 0x2A, 0x10 }; /* {addr 16bit, data}, Enable Mixer, Select SDO output for Pin 13, OFF RCLK. */
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static uint8_t ada2200_stop3[] ={ 0x00, 0x29, 0x01 }; /* 0x07 {addr 16bit, data}, Disable SYNCO output, Select SYNCO edge location (Sync timing adjustment) */
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static uint8_t ada2200_stop4[] ={ 0x00, 0x2C, 0x00 }; /* {addr 16bit, data}, Enable RCLK output */
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static uint8_t m_tx_buf[3]; /**< TX buffer. */
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static uint8_t m_length = sizeof(m_tx_buf); /**< Transfer length. */
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void ada2200_spi_write(const void * data, size_t size)
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{
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/* Ensure bus is initialized */
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if (!spi2_bus_is_initialized()) {
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DBG_PRINTF("[ADA] auto-init SPI2\r\n");
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spi2_bus_init();
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}
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memcpy(m_tx_buf, data, size);
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/* Use shared SPI2 bus with manual CS control */
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nrf_gpio_pin_clear(ADA2200_CS_PIN);
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spi2_bus_transfer(m_tx_buf, size, NULL, 0);
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nrf_gpio_pin_set(ADA2200_CS_PIN);
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}
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extern void ada2200_start(void)
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{
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//ada2200_spi_write(ada2200_startR, m_length);
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DBG_PRINTF("[ADA] start...\r\n");
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ada2200_spi_write(ada2200_start0, m_length);
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DBG_PRINTF("[ADA] cmd0 OK\r\n");
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_start1, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_start2, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_start3, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_start4, m_length);
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nrf_delay_us(2);
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}
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extern void ada2200_stop(void)
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{
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ada2200_spi_write(ada2200_stop0, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_stop1, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_stop2, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_stop3, m_length);
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nrf_delay_us(2);
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ada2200_spi_write(ada2200_stop4, m_length);
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nrf_delay_us(2);
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}
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extern void ada2200_init(void)
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{
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DBG_PRINTF("[ADA] init...\r\n");
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/* Initialize shared SPI2 bus (handles already-initialized case) */
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ret_code_t err = spi2_bus_init();
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if (err != NRF_SUCCESS) {
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APP_ERROR_CHECK(err);
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}
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DBG_PRINTF("[ADA] init OK\r\n");
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/* CS pin is configured by spi2_bus_init() */
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}
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extern void ada2200_uninit(void)
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{
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/* Don't uninit the shared bus - other devices may be using it */
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/* Just ensure CS is deasserted */
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nrf_gpio_pin_set(ADA2200_CS_PIN);
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}
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