initial commit: oled, rc522, exti
This commit is contained in:
254
Core/Src/main.c
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254
Core/Src/main.c
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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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#include "i2c.h"
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#include "spi.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 <stdio.h>
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#include "oled.h"
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#include "rc522.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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uint8_t CardType[2] = {0};
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uint8_t CardID[4] = {0};
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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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void format_hex_string(const uint8_t *values, char *buffer) {
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const char hex_chars[] = "0123456789ABCDEF";
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// 处理第一个字节
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buffer[0] = hex_chars[values[0] >> 4];
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buffer[1] = hex_chars[values[0] & 0x0F];
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buffer[2] = '-';
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// 处理第二个字节
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buffer[3] = hex_chars[values[1] >> 4];
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buffer[4] = hex_chars[values[1] & 0x0F];
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buffer[5] = '-';
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// 处理第三个字节
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buffer[6] = hex_chars[values[2] >> 4];
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buffer[7] = hex_chars[values[2] & 0x0F];
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buffer[8] = '-';
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// 处理第四个字节并终止字符串
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buffer[9] = hex_chars[values[3] >> 4];
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buffer[10] = hex_chars[values[3] & 0x0F];
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buffer[11] = '\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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/* 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_I2C1_Init();
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MX_USART1_UART_Init();
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MX_SPI1_Init();
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/* USER CODE BEGIN 2 */
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MFRC_Init();
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PCD_Reset();
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OLED_Init();
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OLED_Clear();
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OLED_ShowString(0,0,"Card scan...",12);
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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 char status = PCD_Request(PICC_REQALL, CardType);
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if (CardType[0] == 0x04 && CardType[1] == 0x00)
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{
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OLED_ShowString(0,2,"Type: Classic",13);
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}
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else if (CardType[0] == 0x44 && CardType[1] == 0x00)
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{
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OLED_ShowString(0,2,"Type: Ultralight",16);
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}
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else
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{
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OLED_ShowString(0,2,"Type: Unknown",13);
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}
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if (!status) {
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PCD_AntiColl(CardID);
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OLED_ShowString(0,4,"Card ID:",8);
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// show parsed card id with pattern: %x-%x-%x-%x
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char buffer[12];
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format_hex_string(CardID, buffer);
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OLED_ShowString(0,6,buffer,12);
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HAL_GPIO_WritePin(LED_BTN1_GPIO_Port, LED_BTN1_Pin, GPIO_PIN_SET);
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}
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HAL_Delay(200);
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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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/** 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.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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RCC_OscInitStruct.HSIState = RCC_HSI_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.PLLMUL = RCC_PLL_MUL9;
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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_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != 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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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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if(GPIO_Pin == BTN1_Pin)
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{
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HAL_GPIO_WritePin(LED_BTN1_GPIO_Port, LED_BTN1_Pin, GPIO_PIN_RESET);
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CardType[0] = 0;
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CardType[1] = 0;
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CardID[0] = 0;
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CardID[1] = 0;
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CardID[2] = 0;
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CardID[3] = 0;
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OLED_ShowString(0,4, " ",8);
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OLED_ShowString(0,6, " ",12);
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}
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}
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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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