/* 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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#include "adc.h"
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#include "spi.h"
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#include "tim.h"
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#include "usart.h"
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#include "gpio.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include <string.h>
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#include "miscdev.h"
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#include "sht20.h"
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#include "w25q.h"
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#include "core_json.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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/* 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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/* USER CODE BEGIN PV */
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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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/* USER CODE BEGIN PFP */
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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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uint8_t g_rxch; /* HAL_UART_Receive_IT() receive 1 byte buffer */
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uint8_t g_rxbuf[256]; /* UART1 receive data buffer */
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uint8_t g_rxbytes; /* UART1 receive data bytes */
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uint32_t g_rxTick;
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void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
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{
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if( huart == &huart1 )
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{
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/* clear buffer if it's full */
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if( g_rxbytes >= sizeof(g_rxbuf) )
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g_rxbytes = 0;
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/* Receive a byte data by interrupter */
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HAL_UART_Receive_IT(huart, &g_rxch, 1);
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/* Put this data into receive buffer */
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g_rxbuf[g_rxbytes++] = g_rxch;
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/* Get current receive data tick */
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g_rxTick = HAL_GetTick();
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}
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}
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/* parser and control the Leds and relay */
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int parser_command(char *json_str)
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{
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const char *fields[] = {"RedLed", "GreenLed", "BlueLed", "Relay"};
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char *value;
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size_t value_len = 0;
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int status;
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if (JSON_Validate(json_str, strlen(json_str) ) != JSONSuccess)
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{
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printf("Invalid JSON: %s\r\n", json_str);
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return -1;
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}
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for (int i = 0; i < sizeof(fields) / sizeof(fields[0]); i++)
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{
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if (JSONSuccess == JSON_Search(json_str, strlen(json_str), fields[i], strlen(fields[i]), &value, &value_len))
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{
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if ( !strncasecmp(value, "On", value_len) )
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status = 1;
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else if ( !strncasecmp(value, "Off", value_len) )
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status = 0;
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if ( !strcmp(fields[i], "RedLed") ) {
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turn_led(Led_R, status);
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} else if ( !strcmp(fields[i], "GreenLed") ) {
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turn_led(Led_G, status);
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} else if ( !strcmp(fields[i], "BlueLed") ) {
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turn_led(Led_B, status);
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} else if ( !strcmp(fields[i], "Relay") ) {
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turn_relay(Relay1, status);
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}
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}
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}
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return 0;
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}
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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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int rv;
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float temperature, humidity;
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char pack_buf[128];
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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_USART1_UART_Init();
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MX_ADC1_Init();
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MX_TIM6_Init();
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MX_TIM1_Init();
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MX_SPI1_Init();
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/* USER CODE BEGIN 2 */
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beep_start(2, 300);
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/* Must Enable UART3 receive interrupter here */
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HAL_UART_Receive_IT(&huart1 , &g_rxch, 1);
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printf("Remote monitor and control program\r\n");
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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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const uint32_t sample_interval = 5000; /* sample interval time 5000ms */
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static uint32_t last_tick = 0; /* last sample time */
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/* check sample time arrive and start report */
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if ((HAL_GetTick() - last_tick) >= sample_interval)
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{
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rv = sht20_sample_TrH(&temperature, &humidity);
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if( !rv )
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{
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last_tick = HAL_GetTick();
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memset(pack_buf, 0, sizeof(pack_buf));
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snprintf(pack_buf, sizeof(pack_buf), "{\"Temperature\":\"%.02f\", \"Humidity\":\"%.02f\"}\r\n", temperature, humidity);
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HAL_UART_Transmit(&huart1, (uint8_t *)pack_buf, strlen(pack_buf), 0xFFFF);
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}
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}
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/* UART receive data and receive over */
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if( g_rxbytes > 0 && (HAL_GetTick()-g_rxTick)>=2)
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{
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parser_command((char *)g_rxbuf);
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memset(g_rxbuf, 0, sizeof(g_rxbuf));
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g_rxbytes = 0;
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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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if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
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{
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Error_Handler();
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}
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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_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 1;
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RCC_OscInitStruct.PLL.PLLN = 20;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
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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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/* USER CODE BEGIN 4 */
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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__disable_irq();
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while (1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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