【陶晶驰串口屏】stm32h743驱动cubeide配置

陶晶驰串口屏简介

首先介绍串口：
串口正常情况下包括至少两根信号线，作为像是UART需要两根总线，一根是TXD发送数据线和一根RXD接收数据线。而串口屏就是可以通过单片机的串口来控制屏幕显示，有着操作简单的优点。本文使用的串口屏为陶晶驰串口屏。

首先在这里放一个陶晶驰串口屏的网址：陶晶驰官网，其资料中心有很多关于控制显示控件的函数的介绍。感兴趣的读者可自行探索。

串口屏使用思路

• 在软件usarthimi中设计显示内容，增添控件。这一步在陶晶驰官网的资料中心有较详细的讲解。故不再赘述。

• 使用USB to TTL模块（CH340G等），将usarthimi中设计的工程下载到串口屏内。

• 单片机使用usart通信，控制串口屏中控件的显示。

单片机控制串口屏

1. 首先我们新建一个cubeide工程，习惯性配置RCC。
2. 配置usart，用于和串口屏通信，只需选择asynchronous即可。

3. 到project manager中勾选这个

点击左上角圆柱体图标，生成代码
4.下面分享sys.c和sys.h,其中包含了能实现多串口输出的代码.将void Uart_printf(UART_HandleTypeDef *huart,char *format, …)移植到自己的代码中。

ytcesys.c

#include "ytcesys.h"
#include <stdarg.h>


 
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>



///*
//* 描述： HAL库实现多串口使用printf输出
//* 参数： huart：对应的串口结构体
//* 返回： 无*/
void Uart_printf(UART_HandleTypeDef *huart,char *format, ...)
{
  char buf[512]; //定义临时数组，根据实际发送大小微调

  va_list args;
  va_start(args, format);
  uint16_t len = vsnprintf((char *)buf, sizeof(buf), (char *)format, args);
  va_end(args);
  HAL_UART_Transmit(huart,(u8 *)buf,len,1000);
}


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ytcesys.h

#ifndef __YTCESYS_H
#define __YTCESYS_H
#include "stm32h7xx_hal.h"

#define u8 uint8_t
#define u16 uint16_t
#define u32 uint32_t
#define u64 uint64_t
typedef __IO uint32_t  vu32;
typedef __IO uint16_t vu16;
typedef __IO uint8_t  vu8;
extern void HAL_Delay_us(uint32_t nus);


void Uart_printf(UART_HandleTypeDef *huart,char *format, ...);

#endif


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5.将所用的头文件添加路径里，并在main.c中#include头文件

6.tset
(其中scr_wave是我在usart中一个控件的objname，相当于通过一个printf函数告诉串口屏，scr_wave.txt=“sine”\xff\xff\xff，即设置这个控件的文本为sine，\xff\xff\xff是结束符。

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "ytcesys.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART3_UART_Init();
  /* USER CODE BEGIN 2 */
	Uart_printf(&huart3,"scr_wave.txt=\"sine\"\xff\xff\xff");//串口屏实时显示
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  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_HSI;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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成功显示！

在陶晶驰官网的指令集中还有更多丰富的指令，都可以通过
Uart_printf(&所用串口,“指令\xff\xff\xff”);
的格式实现串口屏实时显示，感兴趣的可以自行搜索