.. _program_listing_file_cellboard_Src_main.c:

Program Listing for File main.c
===============================

|exhale_lsh| :ref:`Return to documentation for file <file_cellboard_Src_main.c>` (``cellboard/Src/main.c``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /* USER CODE BEGIN Header */
   /* USER CODE END Header */
   
   /* Includes ------------------------------------------------------------------*/
   #include "main.h"
   
   /* Private includes ----------------------------------------------------------*/
   /* USER CODE BEGIN Includes */
   #include <math.h>
   #include <stdio.h>
   #include <stdlib.h>
   #include <string.h>
   #include <temperature.h>
   /* USER CODE END Includes */
   
   /* Private typedef -----------------------------------------------------------*/
   /* USER CODE BEGIN PTD */
   
   /* USER CODE END PTD */
   
   /* Private define ------------------------------------------------------------*/
   /* USER CODE BEGIN PD */
   /* USER CODE END PD */
   
   /* Private macro -------------------------------------------------------------*/
   /* USER CODE BEGIN PM */
   
   /* USER CODE END PM */
   
   /* Private variables ---------------------------------------------------------*/
   I2C_HandleTypeDef hi2c1;
   I2C_HandleTypeDef hi2c2;
   
   UART_HandleTypeDef huart2;
   
   /* USER CODE BEGIN PV */
   uint8_t temp_buffer_i = 0;
   uint16_t temp_buffer[TEMP_SENSOR_COUNT][TEMP_SAMPLE_COUNT] = {0};
   
   temperature_t temps = {.values = {0}, .min = {UINT8_MAX}, .max = {0}};
   
   uint32_t temp_timer = 0;
   
   uint8_t rx;
   uint8_t flag = 0;
   /* USER CODE END PV */
   
   /* Private function prototypes -----------------------------------------------*/
   void SystemClock_Config(void);
   static void MX_GPIO_Init(void);
   static void MX_I2C1_Init(void);
   static void MX_USART2_UART_Init(void);
   static void MX_I2C2_Init(void);
   static void MX_NVIC_Init(void);
   /* USER CODE BEGIN PFP */
   void get_temp_maxmin();
   /* USER CODE END PFP */
   
   /* Private user code ---------------------------------------------------------*/
   /* USER CODE BEGIN 0 */
   /* USER CODE END 0 */
   
   int main(void) {
       /* USER CODE BEGIN 1 */
   
       /* USER CODE END 1 */
   
       /* MCU
        * Configuration--------------------------------------------------------*/
   
       /* Reset of all peripherals, Initializes the Flash interface and the
        * Systick. */
       HAL_Init();
   
       /* USER CODE BEGIN Init */
   
       /* USER CODE END Init */
   
       /* Configure the system clock */
       SystemClock_Config();
   
       /* USER CODE BEGIN SysInit */
   
       /* USER CODE END SysInit */
   
       /* Initialize all configured peripherals */
       MX_GPIO_Init();
       MX_I2C1_Init();
       MX_USART2_UART_Init();
       MX_I2C2_Init();
   
       /* Initialize interrupts */
       MX_NVIC_Init();
       /* USER CODE BEGIN 2 */
   
       /* USER CODE END 2 */
   
       /* Infinite loop */
       /* USER CODE BEGIN WHILE */
       HAL_I2C_EnableListen_IT(&hi2c1);
       while (1) {
           /* USER CODE END WHILE */
   
           /* USER CODE BEGIN 3 */
           // Read temperatures
           if (HAL_GetTick() - temp_timer >= TEMP_READ_INTERVAL) {
               temp_timer = HAL_GetTick();
   
               I2C_HandleTypeDef *buses[TEMP_BUS_COUNT] = {&hi2c2};
               temperature_read_sample(buses, temp_buffer[temp_buffer_i++]);
   
               if (temp_buffer_i == TEMP_SAMPLE_COUNT) {
                   temp_buffer_i = 0;
   
                   char k[255] = {'\0'};
                   for (uint8_t i = 0; i < TEMP_SENSORS_PER_STRIP; i++) {
                       sprintf(k + strlen(k), "%d ", temps.values[i]);
                   }
   
                   sprintf(k + strlen(k), "\r\n ");
   
                   HAL_UART_Transmit(&huart2, (uint8_t *)k, strlen(k), 100);
   
                   // Compute average
                   temperature_get_average(temp_buffer, temps.values);
   
                   temperature_get_extremes(temps.values, temps.min, temps.max);
               }
           }
   
           if (flag == 1) {
               flag = 0;
   
               /* char k[255];
               sprintf(k, "%d %d %d %d\r\n", temps.max[0], temps.max[1],
                       temps.min[0], temps.min[1]);
               HAL_UART_Transmit(&huart2, (uint8_t *)k, strlen(k), 10);*/
           }
       }
       /* USER CODE END 3 */
   }
   
   void SystemClock_Config(void) {
       RCC_OscInitTypeDef RCC_OscInitStruct = {0};
       RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
   
       __HAL_RCC_PWR_CLK_ENABLE();
       __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
       RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
       RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
       RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
       RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
       RCC_OscInitStruct.PLL.PLLM = 4;
       RCC_OscInitStruct.PLL.PLLN = 100;
       RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
       RCC_OscInitStruct.PLL.PLLQ = 4;
       if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
           Error_Handler();
       }
       RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK |
                                     RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
       RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
       RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
       RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
       RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
   
       if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) {
           Error_Handler();
       }
   }
   
   static void MX_NVIC_Init(void) {
       /* I2C1_ER_IRQn interrupt configuration */
       HAL_NVIC_SetPriority(I2C1_ER_IRQn, 0, 0);
       HAL_NVIC_EnableIRQ(I2C1_ER_IRQn);
       /* I2C1_EV_IRQn interrupt configuration */
       HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0);
       HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
   }
   
   static void MX_I2C1_Init(void) {
       /* USER CODE BEGIN I2C1_Init 0 */
   
       /* USER CODE END I2C1_Init 0 */
   
       /* USER CODE BEGIN I2C1_Init 1 */
   
       /* USER CODE END I2C1_Init 1 */
       hi2c1.Instance = I2C1;
       hi2c1.Init.ClockSpeed = 351563;
       hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
       hi2c1.Init.OwnAddress1 = 138;
       hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
       hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
       hi2c1.Init.OwnAddress2 = 0;
       hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
       hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
       if (HAL_I2C_Init(&hi2c1) != HAL_OK) {
           Error_Handler();
       }
       /* USER CODE BEGIN I2C1_Init 2 */
       /* USER CODE END I2C1_Init 2 */
   }
   
   static void MX_I2C2_Init(void) {
       /* USER CODE BEGIN I2C2_Init 0 */
   
       /* USER CODE END I2C2_Init 0 */
   
       /* USER CODE BEGIN I2C2_Init 1 */
   
       /* USER CODE END I2C2_Init 1 */
       hi2c2.Instance = I2C2;
       hi2c2.Init.ClockSpeed = 400000;
       hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2;
       hi2c2.Init.OwnAddress1 = 0;
       hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
       hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
       hi2c2.Init.OwnAddress2 = 0;
       hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
       hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
       if (HAL_I2C_Init(&hi2c2) != HAL_OK) {
           Error_Handler();
       }
       /* USER CODE BEGIN I2C2_Init 2 */
   
       /* USER CODE END I2C2_Init 2 */
   }
   
   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 */
       huart2.Instance = USART2;
       huart2.Init.BaudRate = 115200;
       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;
       if (HAL_UART_Init(&huart2) != HAL_OK) {
           Error_Handler();
       }
       /* USER CODE BEGIN USART2_Init 2 */
   
       /* USER CODE END USART2_Init 2 */
   }
   
   static void MX_GPIO_Init(void) {
       GPIO_InitTypeDef GPIO_InitStruct = {0};
   
       /* GPIO Ports Clock Enable */
       __HAL_RCC_GPIOC_CLK_ENABLE();
       __HAL_RCC_GPIOH_CLK_ENABLE();
       __HAL_RCC_GPIOA_CLK_ENABLE();
       __HAL_RCC_GPIOB_CLK_ENABLE();
   
       /*Configure GPIO pin Output Level */
       HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
   
       /*Configure GPIO pin : B1_Pin */
       GPIO_InitStruct.Pin = B1_Pin;
       GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
       GPIO_InitStruct.Pull = GPIO_NOPULL;
       HAL_GPIO_Init(B1_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 4 */
   
   void fourtemps_threebytes(uint8_t temps[4], uint8_t out[3]) {
       out[0] = temps[0] << 2 | (temps[1] & 0b00111111) >> 4;
       out[1] = temps[1] << 4 | (temps[2] & 0b00111111) >> 2;
       out[2] = temps[2] << 6 | (temps[3] & 0b00111111);
   }
   
   void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c) {
       flag = 1;
       HAL_I2C_EnableListen_IT(hi2c);  // slave is ready again
       HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
   }
   
   void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection,
                             uint16_t AddrMatchCode) {
       HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
   
       if (TransferDirection == I2C_DIRECTION_TRANSMIT) {
           HAL_I2C_Slave_Seq_Receive_IT(hi2c, &rx, 1, I2C_NEXT_FRAME);
       } else {
           uint8_t tx[3] = {0};
           if (rx < ceil((float)TEMP_SENSOR_COUNT / 4)) {
               fourtemps_threebytes(temps.values + rx * 4, tx);
   
           } else if (rx == 0xFF) {
               uint8_t tmp[4] = {temps.max[0], temps.max[1], temps.min[0],
                                 temps.min[1]};
               fourtemps_threebytes(tmp, tx);
           }
           HAL_I2C_Slave_Seq_Transmit_IT(hi2c, tx, 3, I2C_LAST_FRAME);
       }
   }
   
   void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c) {
       HAL_I2C_Slave_Seq_Receive_IT(hi2c, &rx, 1, I2C_FIRST_FRAME);
   }
   
   void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c) {}
   
   void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) {
       HAL_UART_Transmit(&huart2, (uint8_t *)"ERROR", 5, 10);
   }
   
   /* USER CODE END 4 */
   
   void Error_Handler(void) {
       /* USER CODE BEGIN Error_Handler_Debug */
       /* User can add his own implementation to report the HAL error
        * return state
        */
   
       /* USER CODE END Error_Handler_Debug */
   }
   
   #ifdef USE_FULL_ASSERT
   
   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, tex: printf("Wrong parameters value: file %s on line
          %d\r\n", file, line) */
       /* USER CODE END 6 */
   }
   #endif /* USE_FULL_ASSERT */
   
   /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/