用STM32F407控制广州大彩串口屏的功能范例

想知道单片机控制代码，想看看基础功能怎么样实现，学习一下。现在选用的是DC80480GM070_1111_1X(T/C/N)串口屏

#include "stm32f4xx.h"
#include "stm32f4xx_usart.h"

#define SCREEN_USART USART2

void USART_Config(void)
{
    USART_InitTypeDef USART_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

    GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
    USART_Init(SCREEN_USART, &USART_InitStructure);

    USART_Cmd(SCREEN_USART, ENABLE);
}

void sendCommand(uint8_t cmd)
{
    while(USART_GetFlagStatus(SCREEN_USART, USART_FLAG_TXE) == RESET);
    USART_SendData(SCREEN_USART, 0xAA);
    while(USART_GetFlagStatus(SCREEN_USART, USART_FLAG_TXE) == RESET);
    USART_SendData(SCREEN_USART, 0x55);
    while(USART_GetFlagStatus(SCREEN_USART, USART_FLAG_TXE) == RESET);
    USART_SendData(SCREEN_USART, 0x01);
    while(USART_GetFlagStatus(SCREEN_USART, USART_FLAG_TXE) == RESET);
    USART_SendData(SCREEN_USART, cmd);
}

void sendString(uint8_t *str)
{
    while(*str)
    {
        while(USART_GetFlagStatus(SCREEN_USART, USART_FLAG_TXE) == RESET);
        USART_SendData(SCREEN_USART, *str++);
    }
}

int main(void)
{
    USART_Config();
    sendCommand(0x00); //清屏
    sendString("Hello, world!"); //发送字符串
    while(1);
}

该代码首先配置了串口2，然后定义了两个函数，分别用于发送指令和字符串。

在主函数中，先发送了一个清屏指令，然后发送了一个字符串。可以根据需要修改指令和字符串内容。