160 lines
4.7 KiB
C
160 lines
4.7 KiB
C
/**
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******************************************************************
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* @file main.c
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* @author fire
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* @version V1.0
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* @date 2019-xx-xx
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* @brief CAN双机测试实验
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******************************************************************
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* @attention
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*
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* 实验平台:野火 STM32H750 开发板
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* 论坛 :http://www.firebbs.cn
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* 淘宝 :http://firestm32.taobao.com
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*
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******************************************************************
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*/
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#include "stm32h7xx.h"
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#include "main.h"
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#include "./led/bsp_led.h"
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#include "./usart/bsp_debug_usart.h"
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#include "./key/bsp_key.h"
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#include "./can/bsp_can.h"
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extern FDCAN_HandleTypeDef hfdcan;
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FDCAN_RxHeaderTypeDef RxHeader;
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uint8_t RxData[12];
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/**
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* @brief 主函数
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* @param 无
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* @retval 无
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*/
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int main(void)
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{
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/* 使能指令缓存 */
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SCB_EnableICache();
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/* 使能数据缓存 */
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SCB_EnableDCache();
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/* 系统时钟初始化成480MHz */
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SystemClock_Config();
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/* LED 端口初始化 */
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LED_GPIO_Config();
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LED_BLUE;
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/* 配置串口1为：115200 8-N-1 */
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DEBUG_USART_Config();
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/* 初始化独立按键 */
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Key_GPIO_Config();
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CAN_Config();
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printf("\r\n欢迎使用野火 STM32 H750 开发板。\r\n");
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printf("\r\n 野火H743 CAN通讯实验例程\r\n");
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printf("\r\n 实验步骤：\r\n");
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printf("\r\n 1.使用导线连接好两个CAN讯设备\r\n");
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printf("\r\n 2.使用跳线帽连接好:5v --- C/4-5V \r\n");
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printf("\r\n 3.按下开发板的KEY1键，会使用CAN向外发送0-11的数据包，包的扩展ID为0x1314 \r\n");
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printf("\r\n 4.若开发板的CAN接收到扩展ID为0x1314的数据包，会把数据以打印到串口。 \r\n");
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printf("\r\n 5.本例中的can波特率为1MBps。 \r\n");
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while(1)
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{
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/*按一次按键发送一次数据*/
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if( Key_Scan(KEY1_GPIO_PORT,KEY1_PIN) == KEY_ON)
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{
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LED_BLUE;
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/* 装载一帧数据 */
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CAN_SetMsg();
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HAL_Delay(100);
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LED_RGBOFF;
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}
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if(HAL_FDCAN_IsRxBufferMessageAvailable(&hfdcan,FDCAN_RX_BUFFER0))
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{
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/* 接收消息 */
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HAL_FDCAN_GetRxMessage(&hfdcan, FDCAN_RX_BUFFER0, &RxHeader, RxData);
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/*接收成功*/
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LED_GREEN;
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printf("\r\nCAN接收到数据：\r\n");
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CAN_DEBUG_ARRAY(RxData,8);
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HAL_Delay(100);
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LED_RGBOFF;
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}
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}
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}
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/**
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* @brief System Clock 配置
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* system Clock 配置如下:
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 480000000 (CPU Clock)
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* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
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* AHB Prescaler = 2
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* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
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* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
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* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
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* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 5
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* PLL_N = 192
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* PLL_P = 2
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* PLL_Q = 24
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* PLL_R = 2
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* VDD(V) = 3.3
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* Flash Latency(WS) = 4
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* @param None
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* @retval None
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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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/** 启用电源配置更新
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*/
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HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
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/** 配置主内稳压器输出电压
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);
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while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
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/** 初始化CPU、AHB和APB总线时钟
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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 = 5;
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RCC_OscInitStruct.PLL.PLLN = 192;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLQ = 24;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLFRACN = 0;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1);
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}
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/** 初始化CPU、AHB和APB总线时钟
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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_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
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{
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while(1);
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}
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}
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/****************************END OF FILE***************************/
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