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STM32H750XB_RT-THREAD/41-RS485通信实验/User/main.c

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STM32H750 RTThread 例程
2025-07-21 06:34:29 +00:00
/**
******************************************************************
* @file main.c
* @author fire
* @version V1.0
* @date 2019-xx-xx
* @brief RS485ͨ<EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD>
******************************************************************
* @attention
*
* ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD> STM32H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>̳ :http://www.firebbs.cn
* <EFBFBD>Ա<EFBFBD> :http://firestm32.taobao.com
*
******************************************************************
*/
#include "stm32h7xx.h"
#include "main.h"
#include "./led/bsp_led.h"
#include "./usart/bsp_debug_usart.h"
#include "./key/bsp_key.h"
#include "./485/bsp_485.h"
#include "./delay/core_delay.h"
extern FDCAN_HandleTypeDef hfdcan;
FDCAN_RxHeaderTypeDef RxHeader;
uint8_t RxData[12];
void Delay(__IO uint32_t nCount) //<2F>򵥵<EFBFBD><F2B5A5B5><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
{
for(; nCount != 0; nCount--);
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
int main(void)
{
char *pbuf;
uint16_t len;
/* ʹ<><CAB9>ָ<EFBFBD><EFBFBD><EEBBBA> */
SCB_EnableICache();
/* ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD> */
SCB_EnableDCache();
/* ϵͳʱ<CDB3>ӳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>480MHz */
SystemClock_Config();
_485_Config();
/* LED <20>˿ڳ<CBBF>ʼ<EFBFBD><CABC> */
LED_GPIO_Config();
LED_BLUE;
/* <20><><EFBFBD>ô<EFBFBD><C3B4><EFBFBD>1Ϊ<31><CEAA>115200 8-N-1 */
DEBUG_USART_Config();
/* <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
Key_GPIO_Config();
printf("\r\n <20><>ӭʹ<D3AD><CAB9>Ұ<EFBFBD><D2B0> STM32H750-<2D><>ս<EFBFBD><D5BD> <20><><EFBFBD><EFBFBD><EFBFBD>塣\r\n");
printf("\r\n Ұ<><D2B0> STM32H750 485ͨѶʵ<D1B6><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
printf("\r\n ʵ<>鲽<EFBFBD>裺\r\n");
printf("\r\n 1.ʹ<>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӻ<EFBFBD><D3BA><EFBFBD><EFBFBD><EFBFBD>485ͨѶ<CDA8>豸\r\n");
printf("\r\n 2.ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>Ӻ<EFBFBD>:5v --- C/4-5V,485-D --- PA2,485-R ---PA3 \r\n");
printf("\r\n 3.<2E><>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ұ<EFBFBD>𿪷<EFBFBD><F0BFAAB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>飬<EFBFBD><E9A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>嶼<EFBFBD><E5B6BC><EFBFBD>ر<EFBFBD><D8B1><EFBFBD><EFBFBD>򼴿ɡ<F2BCB4BF>\r\n");
printf("\r\n 4.׼<><D7BC><EFBFBD>ú󣬰<C3BA><F3A3ACB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KEY1<59><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>485<38><35><EFBFBD>ⷢ<EFBFBD><E2B7A2>0-255<35><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD> \r\n");
printf("\r\n 5.<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>485<38><35><EFBFBD>յ<EFBFBD>256<35><36><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>16<31><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> \r\n");
while(1)
{
/*<2A><>һ<EFBFBD>ΰ<EFBFBD><CEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
if( Key_Scan(KEY1_GPIO_PORT,KEY1_PIN) == KEY_ON)
{
uint16_t i;
LED_BLUE;
_485_TX_EN();
for(i=0;i<=0xff;i++)
{
_485_SendByte(i); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/*<2A>Ӷ<EFBFBD><D3B6><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>֤485<38><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
Delay(0xFFF);
_485_RX_EN();
LED_GREEN;
printf("\r\n<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳɹ<EFBFBD><EFBFBD><EFBFBD>\r\n"); //ʹ<>õ<EFBFBD><C3B5>Դ<EFBFBD><D4B4>ڴ<EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ն<EFBFBD>
}
else
{
LED_BLUE;
pbuf = get_rebuff(&len);
if(len>=256)
{
LED_GREEN;
printf("\r\n<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ%d<><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n",len);
_485_DEBUG_ARRAY((uint8_t*)pbuf,len);
clean_rebuff();
}
}
}
}
/**
* @brief System Clock <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* system Clock <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 480000000 (CPU Clock)
* HCLK(Hz) = 240000000 (AXI and AHBs Clock)
* AHB Prescaler = 2
* D1 APB3 Prescaler = 2 (APB3 Clock 120MHz)
* D2 APB1 Prescaler = 2 (APB1 Clock 120MHz)
* D2 APB2 Prescaler = 2 (APB2 Clock 120MHz)
* D3 APB4 Prescaler = 2 (APB4 Clock 120MHz)
* HSE Frequency(Hz) = 25000000
* PLL_M = 5
* PLL_N = 192
* PLL_P = 2
* PLL_Q = 2
* PLL_R = 2
* VDD(V) = 3.3
* Flash Latency(WS) = 4
* @param None
* @retval None
*/
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** <20><><EFBFBD>õ<EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>ø<EFBFBD><C3B8><EFBFBD>
*/
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
/** <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѹ<EFBFBD><D1B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѹ
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
/** <20><>ʼ<EFBFBD><CABC>CPU<50><55>AHB<48>͡<EFBFBD>APB<50><42><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 5;
RCC_OscInitStruct.PLL.PLLN = 192;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
}
/** <20><>ʼ<EFBFBD><CABC>CPU<50><55>AHB<48>͡<EFBFBD>APB<50><42><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
}
}
/****************************END OF FILE***************************/
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