ban-module/Core/Src/app_adc.c

/*
 * app_adc.c
 *
 *  Created on: Nov 10, 2023
 *      Author: juraj
 */

#include "app_adc.h"

ADC_HandleTypeDef *adc_handle;

nBusAppInterface_t mcu_adc_driver = {
	  mcu_adc_init,
	  mcu_adc_reset,
	  mcu_adc_getType,
	  mcu_adc_getSensorCount,
	  mcu_adc_getData,
	  mcu_adc_setData,
	  mcu_adc_hasParam,
	  mcu_adc_getParam,
	  mcu_adc_setParam,
	  mcu_adc_start,
	  mcu_adc_stop
};

uint32_t mcu_adc_data[MCU_ADC_CHANNELS];

volatile uint8_t adc_flag = 0;

void adcCompleteCallback(ADC_HandleTypeDef *adc){
	adc_flag = 1;
}


nBusAppInterface_t *getMcuAdcDriver(){
	return &mcu_adc_driver;
}

void mcu_adc_init(void *hw_interface, void *hw_config){
	adc_handle = (ADC_HandleTypeDef*)hw_interface;
	HAL_ADC_RegisterCallback(adc_handle, HAL_ADC_CONVERSION_COMPLETE_CB_ID, adcCompleteCallback);
	HAL_ADCEx_Calibration_Start(adc_handle, ADC_SINGLE_ENDED);
}

void mcu_adc_reset(){
	HAL_ADC_Stop_DMA(adc_handle);
	HAL_ADCEx_Calibration_Start(adc_handle, ADC_SINGLE_ENDED);
}

void mcu_adc_start(){
	HAL_ADC_Start_DMA(adc_handle, (uint32_t*)&mcu_adc_data, MCU_ADC_CHANNELS);
}

void mcu_adc_stop(){
	HAL_ADC_Stop_DMA(adc_handle);
}

nBus_sensorType_t mcu_adc_getType(uint8_t sensor_index){

	if (sensor_index > mcu_adc_getSensorCount())
		return TYPE_UNKNOWN;

	return TYPE_PRESSURE;
}


uint8_t mcu_adc_getSensorCount(){
	return MCU_ADC_CHANNELS;
}


/**
 * @brief Return data from one or all sensors
 * @param sensor_index If is >0, return data from specified sensors.
 * If sensor_index=0, return data from all sensors.
 * @retval number of bytes in written to array *data
 * @note data format for:
 * sensor_index=0  sensor1_index[1B]|sensor1_data[2B]|sensor2_index[1B]|sensor2_data[2B]|...
 * sensor_index>0  sensor_index[1B]|sensor_data[2B]
 */
uint8_t mcu_adc_getData(uint8_t sensor_index, uint8_t *data){

	if(adc_flag == 1){
		adc_flag = 0;

		if(sensor_index == 0) {
			for (uint8_t i=0; i<MCU_ADC_CHANNELS ;++i){
				data[i*3] = i+1;
				data[i*3+1] = ((uint8_t*)&mcu_adc_data)[i*2];
				data[i*3+2] = ((uint8_t*)&mcu_adc_data)[i*2+1];
			}
			return MCU_ADC_CHANNELS*(2+1);
		}

		data[0] = sensor_index;
		uint8_t index = 0+(sensor_index-1)/2*4;
		if (sensor_index & 1){

			data[1] = ((uint8_t*)&mcu_adc_data)[0+index];
			data[2] = ((uint8_t*)&mcu_adc_data)[1+index];
		} else {
			data[1] = ((uint8_t*)&mcu_adc_data)[2+index];
			data[2] = ((uint8_t*)&mcu_adc_data)[3+index];
		}
        return 3;
	}

	return 0;
}

uint8_t mcu_adc_setData(uint8_t *data){
	return 0;
}

uint8_t mcu_adc_getParam(uint8_t sensor_index, nBus_param_t param){
	return 0x00;
}

uint8_t mcu_adc_hasParam(uint8_t sensor_index, nBus_param_t param){
	return 0;
}

nBus_param_t mcu_adc_setParam(uint8_t sensor_index, nBus_param_t param, uint8_t value){
	return PARAM_NONE;
}