bstanwell/ch32v20x-examples
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qiyongshuang
2024-02-26 13:22:09 +08:00
parent 0ad592325e
commit 9596a13c17
573 changed files with 36301 additions and 23003 deletions
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EVT/EXAM/USART/USART_HalfDuplex/User/main.c
+6 -5
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@@ -2,7 +2,7 @@
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Date : 2024/01/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
@@ -19,8 +19,9 @@
*This example demonstrates UART2 and USART3 single-wire half-duplex mode data
*transmission and reception.
*
* Hardware connection:PA2 -- PB10
*
*Hardware connection:PA2 -- PB10
*Note: The pin should be GPIO_Mode_AF_OD in single-wire half-duplex mode.
* The pin needs to connected a pull_up resistor
*/
#include "debug.h"
@@ -91,7 +92,7 @@ void USARTx_CFG(void)
/* USART2 TX-->A.2 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; /* Only Configure TX Pin */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USART3 TX-->B.10 */
@@ -122,7 +123,7 @@ void USARTx_CFG(void)
*/
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
SystemCoreClockUpdate();
Delay_Init();
USART_Printf_Init(115200);