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318 lines
9.1 KiB
C
318 lines
9.1 KiB
C
/* 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 "SEGGER_SYSVIEW.h"
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#include "SEGGER_RTT.h"
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#include "stm32g0b1xx.h"
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#include "stm32g0xx_hal_cortex.h"
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#include <stdint.h>
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#include <stdio.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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static void MX_GPIO_Init(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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#define BUFFER_SIZE 515
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uint8_t rxBuffer[BUFFER_SIZE];
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uint16_t rxBufferPos = 0;
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void init_UART1_it(){
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RCC->APBENR2 |= RCC_APBENR2_USART1EN;
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RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
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GPIOC->MODER &= ~GPIO_MODER_MODE5; // Alternate function mode on RX pin
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GPIOC->MODER |= GPIO_MODER_MODE5_1;
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GPIOC->AFR[0] &= GPIO_AFRL_AFSEL5;
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GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos; // AF1 -> USART1 RX
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USART1->BRR = 128; // 32000000÷250000
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USART1->CR1 = USART_CR1_RE;
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USART1->CR3 |= USART_CR3_EIE; // Interrupt on BREAK (and other errors)
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USART1->CR1 |= USART_CR1_RXNEIE_RXFNEIE; // RX Interrupt
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USART1->CR1 |= USART_CR1_UE;
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HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(USART1_IRQn);
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}
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void init_UART1_dma(){
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RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
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RCC->APBENR2 |= RCC_APBENR2_USART1EN;
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RCC->AHBENR |= RCC_AHBENR_DMA1EN;
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GPIOC->MODER &= ~GPIO_MODER_MODE5; // Alternate function mode on RX pin
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GPIOC->MODER |= GPIO_MODER_MODE5_1;
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GPIOC->AFR[0] &= GPIO_AFRL_AFSEL5;
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GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos; // AF1 -> USART1 RX
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USART1->BRR = 128; // 32000000÷250000
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USART1->CR1 = USART_CR1_RE;
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USART1->CR3 |= USART_CR3_EIE; // Interrupt on BREAK (and other errors)
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USART1->CR3 |= USART_CR3_DMAR; // DMA Receiver mode
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DMA1_Channel1->CCR = (0x02 << DMA_CCR_PL_Pos) | DMA_CCR_MINC | DMA_CCR_TCIE;
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DMA1_Channel1->CMAR = ( uint32_t )&rxBuffer[0];
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DMA1_Channel1->CPAR = ( uint32_t )&(USART1->RDR);
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DMA1_Channel1->CNDTR = 5;
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DMAMUX1_Channel0->CCR &= ~( DMAMUX_CxCR_DMAREQ_ID );
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DMAMUX1_Channel0->CCR |= ( 50 << DMAMUX_CxCR_DMAREQ_ID_Pos ); // 50 -> USART1 RX
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USART1->CR1 |= USART_CR1_UE;
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HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(USART1_IRQn);
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HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
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}
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void USART1_IRQHandler(){
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SEGGER_SYSVIEW_RecordEnterISR();
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if(USART1->ISR & USART_ISR_RXNE_RXFNE){
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//printf("%x ", USART1->RDR);
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rxBuffer[rxBufferPos++] = USART1->RDR;
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if(rxBufferPos >= BUFFER_SIZE){
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rxBufferPos = 0;
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}
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}
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if(USART1->ISR & USART_ISR_FE){
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USART1->ICR = USART_ICR_FECF;
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//if(rxBufferPos != 514)
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// printf("FE after %d\n",rxBufferPos);
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//rxBufferPos = 0;
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printf("FE\n");
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//DMA1_Channel1->CNDTR = 1;
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DMA1_Channel1->CNDTR = 5;
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DMA1_Channel1->CCR |= ( DMA_CCR_EN );
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//DMA1_Channel1->CCR |= ( DMA_CCR_EN );
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}
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if(USART1->ISR & USART_ISR_ORE){
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USART1->ICR = USART_ICR_ORECF;
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//printf("ORE\n");
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}
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if(USART1->ISR & USART_ISR_NE){
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USART1->ICR = USART_ICR_NECF;
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printf("NE\n");
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}
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if(USART1->ISR & USART_ISR_UDR){
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USART1->ICR = USART_ICR_UDRCF;
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printf("UDR\n");
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}
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SEGGER_SYSVIEW_RecordExitISR();
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}
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void DMA1_Channel1_IRQHandler(){
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SEGGER_SYSVIEW_RecordEnterISR();
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if(DMA1->ISR & DMA_ISR_TCIF1){
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DMA1->IFCR = DMA_IFCR_CTCIF1;
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DMA1_Channel1->CCR &= ~( DMA_CCR_EN );
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DMA1_Channel1->CMAR = ( uint32_t )&rxBuffer[0];
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}
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SEGGER_SYSVIEW_RecordExitISR();
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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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SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
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printf("Moin!\n");
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SEGGER_SYSVIEW_Conf(); /* Configure and initialize SystemView */
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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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/* USER CODE BEGIN 2 */
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init_UART1_dma();
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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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//HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
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while (1)
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{
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printf("buf: ");
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for(uint16_t i=0; i<10; i++)
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printf("0x%02X ", rxBuffer[i]);
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printf("\n");
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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_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 = RCC_PLLM_DIV1;
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RCC_OscInitStruct.PLL.PLLN = 8;
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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;
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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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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != 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 GPIO 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_GPIO_Init(void)
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{
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/* USER CODE BEGIN MX_GPIO_Init_1 */
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/* USER CODE END MX_GPIO_Init_1 */
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOF_CLK_ENABLE();
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/* USER CODE BEGIN MX_GPIO_Init_2 */
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/* USER CODE END MX_GPIO_Init_2 */
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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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