基于STM32的串口5协议测试源码

ID:225288 · 发表于 2018-3-13 19:29

这个是STM32F103ZET6的串口5测试代码，内部附带一个简单的串口协议测试。

单片机源程序如下:

/*-------------------------------------------------------------------------------
文件名称：main.c
文件描述：通过串口5，使用printf函数打印信息，编译时需勾选Use MicroLIB
硬件平台：尼莫M3S开发板
编写整理：shifang
固件库：V3.5
备注：通过简单修改可以移植到其他开发板，部分资料来源于网络。
---------------------------------------------------------------------------------*/
#include <stdio.h>
#include "stm32f10x.h"
#include "led.h"
#include "delay.h"
#include "key.h"
#include "timer.h"
#include "beep.h"
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE); //使能PORTC，PORTD时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE); //使能UART5
USART_DeInit(UART5); //复位串口5
//UART5_TX PC.12
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //PC.12
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_Init(GPIOC, &GPIO_InitStructure); //初始化PC12
//UART5_RX PD.2
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化PD2
//UART5 NVIC 配置
NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器
/* USARTx configured as follow:
- BaudRate = 9600 baud 波特率
- Word Length = 8 Bits 数据长度
- One Stop Bit 停止位
- No parity 校验方式
- Hardware flow control disabled (RTS and CTS signals) 硬件控制流
- Receive and transmit enabled 使能发送和接收
*/
USART_InitStructure.USART_BaudRate = 9600;
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_Rx | USART_Mode_Tx;
USART_Init(UART5, &USART_InitStructure);
USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);//开启中断
USART_Cmd(UART5, ENABLE); //使能串口
LED_Init();//LED初始化
KEY_Init();//按键初始化
SysTick_Init();//延时初始化
BEEP_Init(); //蜂鸣器初始化
printf("\n\rUSART Printf Example: （德飞莱）尼莫M3S开发板串口测试程序\r输入任何信息发送，接收到同样信息");
while (1)
{
//使用printf函数循环发送固定信息
Delay_ms(500);
LED2_REV;
}
}
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(UART5, (uint8_t) ch);
/* 循环等待直到发送结束*/
while (USART_GetFlagStatus(UART5, USART_FLAG_TC) == RESET)
{}
return ch;
}

复制代码

所有资料51hei提供下载:

串口5测试协议.zip (310.8 KB, 下载次数: 19)

ID:104982 · 发表于 2018-5-4 19:51

请问程序包括接收中断处理吗？

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基于STM32的串口5协议测试源码

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