使用软件:IAR FOR STM8
编程方式:固件库
硬件配套:STM8S105K4T6最小系统板
注意事项:需在IAR工程配置中:在 General Options->Library Configuration->Library 选择 Full;在 General Options->Library Options->Printf formatter 选择 Large,Math functions 选择 Default;另外不能串口打印小数,需进一步处理数据
这是我在做课设时参考的代码,现记录如下:
1. uart.h
#ifndef __UART_H
#define __UART_H
#include "stm8s.h"
#include "stdio.h"
#ifdef _RAISONANCE_
#define PUTCHAR_PROTOTYPE int putchar (char c)
#define GETCHAR_PROTOTYPE int getchar (void)
#elif defined (_COSMIC_)
#define PUTCHAR_PROTOTYPE char putchar (char c)
#define GETCHAR_PROTOTYPE char getchar (void)
#else /* _IAR_ */
#define PUTCHAR_PROTOTYPE int putchar (int c)
#define GETCHAR_PROTOTYPE int getchar (void)
#endif /* _RAISONANCE_ */
void UART2_Config(void);
void UART2_SendByte(u8 data);
void UART2_SendStr(const unsigned char *p_str);
void Delay(uint32_t nCount);
#endif /* __UART_H */
2. uart.c
#include "UART.h"
void UART2_Config(void)
{
CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART2, ENABLE);
UART2_DeInit();
/*
* 将UART2配置为:
* 波特率 = 115200
* 数据位 = 8
* 1位停止位
* 无校验位
* 使能接收和发送
* 使能接收中断
*/
UART2_Init((u32)115200, UART2_WORDLENGTH_8D, UART2_STOPBITS_1, UART2_PARITY_NO , UART2_SYNCMODE_CLOCK_DISABLE , UART2_MODE_TXRX_ENABLE);
UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);
UART2_Cmd(ENABLE);
}
void Delay(uint32_t nCount)
{
/* Decrement nCount value */
while (nCount != 0)
{
nCount--;
}
}
void UART2_SendByte(u8 data)
{
UART2_SendData8((unsigned char)data);
/* 等待传输结束 */
while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);
}
void UART2_SendStr(const unsigned char *p_str)
{
// u8 i = 0;
while(*p_str != '\0')
{
UART2_SendByte(*p_str);
// Delay(1000);
p_str++;
}
}
/**********************************printf*********************************************/
/**
* @brief Retargets the C library printf function to the UART.
* @param c Character to send
* @retval char Character sent
*/
PUTCHAR_PROTOTYPE
{
/* Write a character to the UART2 */
UART2_SendData8(c);
/* Loop until the end of transmission */
while (UART2_GetFlagStatus(UART2_FLAG_TXE) == RESET);
return (c);
}
/**
* @brief Retargets the C library scanf function to the USART.
* @param None
* @retval char Character to Read
*/
GETCHAR_PROTOTYPE
{
#ifdef _COSMIC_
char c = 0;
#else
int c = 0;
#endif
/* Loop until the Read data register flag is SET */
while (UART2_GetFlagStatus(UART2_FLAG_RXNE) == RESET);
c = UART2_ReceiveData8();
return (c);
}
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原文链接:https://blog.csdn.net/baidu_39514357/article/details/122121707
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