ht32 驱动txrx串口屏代码

以下是一个简单的 HT32 驱动 TXRX 串口屏的代码示例：

#include "ht32f5xxxx_01.h"
#include "ht32f5xxxx_usart.h"
#include "ht32f5xxxx_gpio.h"

#define USART_TX_PIN        GPIO_PIN_9
#define USART_TX_GPIO_PORT  HT_GPIOF
#define USART_RX_PIN        GPIO_PIN_10
#define USART_RX_GPIO_PORT  HT_GPIOF

void USART_Configuration(void)
{
  USART_InitTypeDef USART_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
  
  // 使能 USART 和 GPIO 时钟
  CKCU_PeripClockConfig_TypeDef CKCUClock = {{0}};
  CKCUClock.Bit.PA = 1;
  CKCUClock.Bit.AFIO = 1;
  CKCUClock.Bit.USART0 = 1;
  CKCU_PeripClockConfig(CKCUClock, ENABLE);
  
  // 配置 USART 引脚为复用功能
  GPIO_InitStructure.GPIO_Pin = USART_TX_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
  GPIO_Init(USART_TX_GPIO_PORT, &GPIO_InitStructure);
  
  GPIO_InitStructure.GPIO_Pin = USART_RX_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_MODE_FLOATING;
  GPIO_Init(USART_RX_GPIO_PORT, &GPIO_InitStructure);
  
  // 配置 USART 参数
  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_RX;
  USART_Init(HT_USART0, &USART_InitStructure);
  
  // 使能 USART
  USART_Cmd(HT_USART0, ENABLE);
}

void USART_SendString(char *str)
{
  while(*str != '\0')
  {
    USART_SendData(HT_USART0, *str++);
    while(USART_GetFlagStatus(HT_USART0, USART_FLAG_TXE) == RESET);
  }
}

int main(void)
{
  USART_Configuration();
  USART_SendString("Hello, TXRX Screen!\r\n");
  
  while(1);
}

需要注意的是，这只是一个基本的示例代码，实际情况下可能需要根据具体的 TXRX 串口屏的通信协议进行相应的修改。