first commit
This commit is contained in:
David Rice
739
Core/Src/main.c
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739
Core/Src/main.c
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@@ -0,0 +1,739 @@
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/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2025 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include "stm32g4xx_hal.h"
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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#define IN_SYNC_BYTE_1 'A'
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#define IN_SYNC_BYTE_2 'R'
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#define VREFINT_CAL_ADDR ((uint16_t*) ((uint32_t)0x1FFF75AA))
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#define VREFINT_CAL_VREF 3000UL
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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ADC_HandleTypeDef hadc1;
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ADC_HandleTypeDef hadc2;
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TIM_HandleTypeDef htim2;
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UART_HandleTypeDef huart2;
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/* USER CODE BEGIN PV */
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/**
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* @brief Structure to hold the time and date data in binary format
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*/
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uint8_t rx_hold_buffer[2];
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uint8_t rx_buffer[32];
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uint8_t tx_buffer[32];
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uint8_t tx_len = 0x00;
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uint8_t rx_counter = 0x00;
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uint8_t rx_len = 0x00;
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uint8_t rx_len_counter = 0x00;
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uint16_t rx_checksum = 0x0000;
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uint8_t rx_checksum_hold_1 = 0x00;
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uint8_t rx_checksum_hold_2 = 0x00;
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uint16_t rx_checksum_hold = 0x0000;
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uint8_t power_state_value = 0x00;
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uint8_t command = 0x00;
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uint8_t adc_task_flag = 0x00;
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uint8_t uart_tx_flag = 0x00;
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uint16_t vin_adc_val = 0x0000;
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uint16_t vout_adc_val = 0x0000;
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uint32_t vdd_ref = 0x00000000;
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_GPIO_Init(void);
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static void MX_USART2_UART_Init(void);
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static void MX_ADC2_Init(void);
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static void MX_TIM2_Init(void);
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static void MX_ADC1_Init(void);
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/* USER CODE BEGIN PFP */
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void power_switch (uint8_t state);
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void adc_task(void);
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uint32_t get_actual_vdda(ADC_HandleTypeDef *hadc);
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uint32_t get_calibrated_value_mv(uint32_t raw_adc_value, uint32_t vdda_mv);
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_USART2_UART_Init();
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MX_ADC2_Init();
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MX_TIM2_Init();
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MX_ADC1_Init();
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/* USER CODE BEGIN 2 */
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/*Configure GPIO pin output Level */
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HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
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HAL_GPIO_WritePin(POWER_SWITCH_GPIO_Port, POWER_SWITCH_Pin, GPIO_PIN_RESET);
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/* Setup UART interrupts */
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/* Make sure UART Rx counters and flags are reset */
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rx_counter = 0x00;
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rx_len = 0x00;
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rx_len_counter = 0x00;
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adc_task_flag = 0x00;
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uart_tx_flag = 0x00;
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HAL_UART_Receive_IT(&huart2, rx_hold_buffer, 1);
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/* Get real VDDA value */
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vdd_ref = get_actual_vdda(&hadc1);
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tx_buffer[0] = vdd_ref >> 24;
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tx_buffer[1] = vdd_ref >> 16;
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tx_buffer[2] = vdd_ref >> 8;
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tx_buffer[3] = vdd_ref;
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tx_len = 4;
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HAL_UART_Transmit(&huart2, tx_buffer, tx_len, HAL_MAX_DELAY);
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1)
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{
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if (adc_task_flag == 0xff)
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{
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adc_task_flag = 0x00;
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adc_task();
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}
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if (uart_tx_flag == 0xff)
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{
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uart_tx_flag = 0x00;
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HAL_UART_Transmit(&huart2, tx_buffer, tx_len, HAL_MAX_DELAY);
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}
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
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/** Initializes the RCC Oscillators according to the specified parameters
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* in the RCC_OscInitTypeDef structure.
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
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RCC_OscInitStruct.PLL.PLLN = 16;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief ADC1 Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_ADC1_Init(void)
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{
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/* USER CODE BEGIN ADC1_Init 0 */
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/* USER CODE END ADC1_Init 0 */
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ADC_MultiModeTypeDef multimode = {0};
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ADC_ChannelConfTypeDef sConfig = {0};
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/* USER CODE BEGIN ADC1_Init 1 */
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/* USER CODE END ADC1_Init 1 */
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/** Common config
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*/
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hadc1.Instance = ADC1;
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hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV16;
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hadc1.Init.Resolution = ADC_RESOLUTION_12B;
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hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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hadc1.Init.GainCompensation = 0;
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hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
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hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
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hadc1.Init.LowPowerAutoWait = DISABLE;
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hadc1.Init.ContinuousConvMode = DISABLE;
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hadc1.Init.NbrOfConversion = 1;
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hadc1.Init.DiscontinuousConvMode = DISABLE;
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hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
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hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
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hadc1.Init.DMAContinuousRequests = DISABLE;
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hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
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hadc1.Init.OversamplingMode = DISABLE;
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if (HAL_ADC_Init(&hadc1) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure the ADC multi-mode
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*/
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multimode.Mode = ADC_MODE_INDEPENDENT;
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if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_VREFINT;
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sConfig.Rank = ADC_REGULAR_RANK_1;
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sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
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sConfig.SingleDiff = ADC_SINGLE_ENDED;
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sConfig.OffsetNumber = ADC_OFFSET_NONE;
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sConfig.Offset = 0;
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if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN ADC1_Init 2 */
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/* USER CODE END ADC1_Init 2 */
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}
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/**
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* @brief ADC2 Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_ADC2_Init(void)
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{
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/* USER CODE BEGIN ADC2_Init 0 */
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/* USER CODE END ADC2_Init 0 */
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ADC_ChannelConfTypeDef sConfig = {0};
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/* USER CODE BEGIN ADC2_Init 1 */
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/* USER CODE END ADC2_Init 1 */
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/** Common config
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*/
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hadc2.Instance = ADC2;
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hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV16;
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hadc2.Init.Resolution = ADC_RESOLUTION_12B;
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hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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hadc2.Init.GainCompensation = 0;
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hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE;
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hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
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hadc2.Init.LowPowerAutoWait = DISABLE;
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hadc2.Init.ContinuousConvMode = DISABLE;
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hadc2.Init.NbrOfConversion = 2;
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hadc2.Init.DiscontinuousConvMode = DISABLE;
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hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START;
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hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
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hadc2.Init.DMAContinuousRequests = DISABLE;
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hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED;
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hadc2.Init.OversamplingMode = DISABLE;
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if (HAL_ADC_Init(&hadc2) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_3;
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sConfig.Rank = ADC_REGULAR_RANK_1;
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sConfig.SamplingTime = ADC_SAMPLETIME_24CYCLES_5;
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sConfig.SingleDiff = ADC_SINGLE_ENDED;
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sConfig.OffsetNumber = ADC_OFFSET_NONE;
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sConfig.Offset = 0;
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if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_4;
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sConfig.Rank = ADC_REGULAR_RANK_2;
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if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN ADC2_Init 2 */
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||||
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/* USER CODE END ADC2_Init 2 */
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}
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/**
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* @brief TIM2 Initialization Function
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* @param None
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* @retval None
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||||
*/
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||||
static void MX_TIM2_Init(void)
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{
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||||
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/* USER CODE BEGIN TIM2_Init 0 */
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||||
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||||
/* USER CODE END TIM2_Init 0 */
|
||||
|
||||
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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TIM_MasterConfigTypeDef sMasterConfig = {0};
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||||
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/* USER CODE BEGIN TIM2_Init 1 */
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||||
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/* USER CODE END TIM2_Init 1 */
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htim2.Instance = TIM2;
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htim2.Init.Prescaler = 0;
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htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim2.Init.Period = 128999;
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htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
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||||
{
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Error_Handler();
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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||||
if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
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||||
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
|
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sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
|
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if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
|
||||
/* USER CODE BEGIN TIM2_Init 2 */
|
||||
|
||||
/* USER CODE END TIM2_Init 2 */
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief USART2 Initialization Function
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
static void MX_USART2_UART_Init(void)
|
||||
{
|
||||
|
||||
/* USER CODE BEGIN USART2_Init 0 */
|
||||
|
||||
/* USER CODE END USART2_Init 0 */
|
||||
|
||||
/* USER CODE BEGIN USART2_Init 1 */
|
||||
|
||||
/* USER CODE END USART2_Init 1 */
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||||
huart2.Instance = USART2;
|
||||
huart2.Init.BaudRate = 921600;
|
||||
huart2.Init.WordLength = UART_WORDLENGTH_8B;
|
||||
huart2.Init.StopBits = UART_STOPBITS_1;
|
||||
huart2.Init.Parity = UART_PARITY_NONE;
|
||||
huart2.Init.Mode = UART_MODE_TX_RX;
|
||||
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
|
||||
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
|
||||
huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
|
||||
huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
|
||||
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
|
||||
if (HAL_UART_Init(&huart2) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
|
||||
if (HAL_UARTEx_SetTxFifoThreshold(&huart2, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
|
||||
if (HAL_UARTEx_SetRxFifoThreshold(&huart2, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
|
||||
if (HAL_UARTEx_DisableFifoMode(&huart2) != HAL_OK)
|
||||
{
|
||||
Error_Handler();
|
||||
}
|
||||
/* USER CODE BEGIN USART2_Init 2 */
|
||||
|
||||
/* USER CODE END USART2_Init 2 */
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief GPIO Initialization Function
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
static void MX_GPIO_Init(void)
|
||||
{
|
||||
GPIO_InitTypeDef GPIO_InitStruct = {0};
|
||||
/* USER CODE BEGIN MX_GPIO_Init_1 */
|
||||
|
||||
/* USER CODE END MX_GPIO_Init_1 */
|
||||
|
||||
/* GPIO Ports Clock Enable */
|
||||
__HAL_RCC_GPIOA_CLK_ENABLE();
|
||||
__HAL_RCC_GPIOB_CLK_ENABLE();
|
||||
|
||||
/*Configure GPIO pin Output Level */
|
||||
HAL_GPIO_WritePin(POWER_SWITCH_GPIO_Port, POWER_SWITCH_Pin, GPIO_PIN_RESET);
|
||||
|
||||
/*Configure GPIO pin Output Level */
|
||||
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
|
||||
|
||||
/*Configure GPIO pin : POWER_SWITCH_Pin */
|
||||
GPIO_InitStruct.Pin = POWER_SWITCH_Pin;
|
||||
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
||||
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
||||
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
|
||||
HAL_GPIO_Init(POWER_SWITCH_GPIO_Port, &GPIO_InitStruct);
|
||||
|
||||
/*Configure GPIO pin : LD2_Pin */
|
||||
GPIO_InitStruct.Pin = LD2_Pin;
|
||||
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
||||
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
||||
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
|
||||
HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
|
||||
|
||||
/* USER CODE BEGIN MX_GPIO_Init_2 */
|
||||
|
||||
/* USER CODE END MX_GPIO_Init_2 */
|
||||
}
|
||||
|
||||
/* USER CODE BEGIN 4 */
|
||||
uint32_t get_actual_vdda(ADC_HandleTypeDef *hadc)
|
||||
{
|
||||
uint32_t vrefint_raw = 0;
|
||||
|
||||
/* Perform ADC reading of the VREFINT channel */
|
||||
HAL_ADC_Start(hadc);
|
||||
if (HAL_ADC_PollForConversion(hadc, 10) == HAL_OK) {
|
||||
vrefint_raw = HAL_ADC_GetValue(hadc);
|
||||
}
|
||||
|
||||
HAL_ADC_Stop(hadc);
|
||||
|
||||
if (vrefint_raw == 0) return 0; /* Avoid division by zero */
|
||||
|
||||
/* Use the standard ST formula to calculate VDDA */
|
||||
/* VDDA = VREFINT_CAL_VREF * VREFINT_CAL / VREFINT_DATA */
|
||||
uint32_t vdda_mv = (VREFINT_CAL_VREF * (uint32_t)(*VREFINT_CAL_ADDR)) / vrefint_raw;
|
||||
|
||||
return vdda_mv;
|
||||
}
|
||||
|
||||
/* Converts a raw ADC reading to real mV using the calculated VDDA */
|
||||
uint32_t get_calibrated_value_mv(uint32_t raw_adc_value, uint32_t vdda_mv)
|
||||
{
|
||||
/* Correct for 12-bit ADC (4095) */
|
||||
return (raw_adc_value * vdda_mv) / 4095;
|
||||
}
|
||||
|
||||
/* ADC task */
|
||||
void adc_task (void)
|
||||
{
|
||||
HAL_ADC_Start(&hadc2);
|
||||
HAL_ADC_PollForConversion(&hadc2, 100);
|
||||
vin_adc_val = HAL_ADC_GetValue(&hadc2);
|
||||
|
||||
HAL_ADC_Start(&hadc2);
|
||||
HAL_ADC_PollForConversion(&hadc2, 100);
|
||||
vout_adc_val = HAL_ADC_GetValue(&hadc2);
|
||||
|
||||
HAL_ADC_Stop(&hadc2);
|
||||
}
|
||||
|
||||
/* Power switch function */
|
||||
void power_switch (uint8_t state)
|
||||
{
|
||||
if (state == 1)
|
||||
{
|
||||
HAL_GPIO_WritePin(POWER_SWITCH_GPIO_Port, POWER_SWITCH_Pin, GPIO_PIN_SET);
|
||||
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
HAL_GPIO_WritePin(POWER_SWITCH_GPIO_Port, POWER_SWITCH_Pin, GPIO_PIN_RESET);
|
||||
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
|
||||
}
|
||||
}
|
||||
|
||||
/* UART Tx callback */
|
||||
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
|
||||
{
|
||||
/* Do nothing here for now */
|
||||
}
|
||||
|
||||
/* UART Rx callback */
|
||||
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
|
||||
{
|
||||
/* If data received on UART */
|
||||
if(huart->Instance==USART2)
|
||||
{
|
||||
/* Act on received data */
|
||||
switch (rx_counter)
|
||||
{
|
||||
case 0x00:
|
||||
/* Check to see if first sync byte has been received */
|
||||
if (rx_hold_buffer[0] == IN_SYNC_BYTE_1)
|
||||
{
|
||||
/* Got it, so now wait for the second sync byte */
|
||||
rx_counter++;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case 0x01:
|
||||
/* Check to see if second sync byte has been received */
|
||||
if (rx_hold_buffer[0] == IN_SYNC_BYTE_2)
|
||||
{
|
||||
/* Got it, so now wait for the data byte */
|
||||
rx_counter++;
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
/* Not got the second sync byte */
|
||||
/* If first sync byte found here, then still wait for second */
|
||||
if (rx_hold_buffer[0] == IN_SYNC_BYTE_1)
|
||||
{
|
||||
/* Got it, so now wait for the second sync byte */
|
||||
rx_counter = 0x01;
|
||||
}
|
||||
|
||||
/* Otherwise start again and wait for first sync byte */
|
||||
else
|
||||
{
|
||||
rx_counter = 0x00;
|
||||
}
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case 0x02:
|
||||
/* Get rx length and reset counter */
|
||||
rx_len = rx_hold_buffer[0];
|
||||
rx_len_counter = 0x00;
|
||||
rx_counter++;
|
||||
break;
|
||||
|
||||
case 0x03:
|
||||
/* Store entire length of Data bytes */
|
||||
/* Increase count */
|
||||
rx_len_counter++;
|
||||
|
||||
/* Store data */
|
||||
rx_buffer[rx_len_counter - 1] = rx_hold_buffer[0];
|
||||
|
||||
/* Check to see if we have all the expected data bytes */
|
||||
/* If so, then move on the CRC */
|
||||
if (rx_len_counter == rx_len)
|
||||
{
|
||||
rx_counter++;
|
||||
rx_len_counter = 0x00;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case 0x04:
|
||||
/* Store Rx checksum byte #1 */
|
||||
rx_checksum_hold_1 = rx_hold_buffer[0];
|
||||
rx_counter++;
|
||||
break;
|
||||
|
||||
case 0x05:
|
||||
/* Store Rx checksum byte #2, reset and calculate checksum */
|
||||
rx_checksum_hold_2 = rx_hold_buffer[0];
|
||||
|
||||
rx_checksum_hold = (rx_checksum_hold_1 << 8) | rx_checksum_hold_2;
|
||||
|
||||
rx_checksum = 0;
|
||||
|
||||
/* Need to apply to all data bits */
|
||||
for (rx_len_counter = 0x00; rx_len_counter < rx_len; rx_len_counter++)
|
||||
{
|
||||
rx_checksum += rx_buffer[rx_len_counter];
|
||||
}
|
||||
|
||||
rx_len = 0x00;
|
||||
rx_len_counter = 0x00;
|
||||
|
||||
rx_checksum = ~rx_checksum;
|
||||
|
||||
/* If checksum calculated equals the received checksum of packet then we got a good packet */
|
||||
if (rx_checksum == rx_checksum_hold)
|
||||
{
|
||||
/* Rx is finished, so reset count to wait for another first sync byte (also act on command/data)*/
|
||||
rx_counter = 0x00;
|
||||
|
||||
command = rx_buffer[0];
|
||||
|
||||
switch (command)
|
||||
{
|
||||
/* 'S' - Set power output state */
|
||||
case 0x53:
|
||||
power_state_value = rx_buffer[1];
|
||||
power_switch(power_state_value);
|
||||
break;
|
||||
|
||||
/* 'V' - Get voltages (both input and output) */
|
||||
case 0x56:
|
||||
adc_task_flag = 0xff;
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Bad packet received */
|
||||
else
|
||||
{
|
||||
/* Rx is finished, so reset count to wait for another first sync byte (bad packet so no flag)*/
|
||||
rx_counter = 0x00;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
/* Default case - NOT USED!*/
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* Reset interrupts */
|
||||
HAL_UART_Receive_IT(&huart2, rx_hold_buffer, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* USER CODE END 4 */
|
||||
|
||||
/**
|
||||
* @brief This function is executed in case of error occurrence.
|
||||
* @retval None
|
||||
*/
|
||||
void Error_Handler(void)
|
||||
{
|
||||
/* USER CODE BEGIN Error_Handler_Debug */
|
||||
/* User can add his own implementation to report the HAL error return state */
|
||||
__disable_irq();
|
||||
while (1)
|
||||
{
|
||||
}
|
||||
/* USER CODE END Error_Handler_Debug */
|
||||
}
|
||||
#ifdef USE_FULL_ASSERT
|
||||
/**
|
||||
* @brief Reports the name of the source file and the source line number
|
||||
* where the assert_param error has occurred.
|
||||
* @param file: pointer to the source file name
|
||||
* @param line: assert_param error line source number
|
||||
* @retval None
|
||||
*/
|
||||
void assert_failed(uint8_t *file, uint32_t line)
|
||||
{
|
||||
/* USER CODE BEGIN 6 */
|
||||
/* User can add his own implementation to report the file name and line number,
|
||||
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
|
||||
/* USER CODE END 6 */
|
||||
}
|
||||
#endif /* USE_FULL_ASSERT */
|
||||
Reference in New Issue
Block a user