2.配套源码_寄存器版本.zip_488_STM8S103F3P6_UART SPI I2C_寄存器版本_所有程序

/* 添加包含芯片的头文件 */ #include<iostm8s103f3.h> #include <stdint.h> #include <stdio.h> #ifdef UART_USE_STDIO #if __ICCARM__ #include <yfuns.h> #endif #endif #ifdef UART_USE_STDIO #define UART_printf(fmt,args...) printf (fmt ,##args) #endif #ifdef UART_USE_STDIO int printf(const char *fmt, ...); #endif unsigned int number1 ; const char number2[] = "Test Printf OK!!"; /******************************************************************************* **函数名称：void delay(unsigned int ms) Name: void delay(unsigned int ms) **功能描述：大概延时 **入口参数：unsigned int ms 输入大概延时数值 **输出：无 *******************************************************************************/ void delay(unsigned int ms) { unsigned int x , y; for(x = ms; x > 0; x--) /* 通过一定周期循环进行延时*/ for(y = 3000 ; y > 0 ; y--); } /******************************************************************************* **函数名称：void UART1_Init(unsigned int baudrate) **功能描述：初始化USART模块 **入口参数：unsigned int baudrate -> 设置串口波特率 **输出：无 *******************************************************************************/ void UART1_Init(unsigned int baudrate) { unsigned int baud; // baud = 16000000 / baudrate; //设定串口相应波特率与串口时钟的分频数 //先写BRR2 , 再写BRR1 UART1_BRR2 = ((unsigned char)((baud & 0xf000) >> 8 )) | ((unsigned char)(baud & 0x000f)); //先写波特比率的高4位与低4位 UART1_BRR1 = ((unsigned char)((baud & 0x0ff0) >> 4)); //后写波特比率的中间8位 UART1_CR1_bit.UART0 = 0; //使能UART1 UART1_CR2_bit.RIEN = 1; //使能中断接收 UART1_CR2_bit.TEN = 1; //使能发送 UART1_CR2_bit.REN = 1; //接收使能 } /******************************************************************************* **函数名称：void Uart1_SendData(unsigned char data) **功能描述：向串口发送寄存器写入一个字节数据 **入口参数：unsigned char data **输出：无 *******************************************************************************/ void Uart1_SendData(unsigned char data) { while(!(UART1_SR&0X80)); //判断发送数据寄存器是否为空 UART1_DR = data; //向发送寄存器写入数据 } int fputc(int ch, FILE *f) { Uart1_SendData(ch); return ch; } #ifdef __CC_ARM // MDK Support struct __FILE { int handle; /* Whatever you require here. If the only file you are using is */ /* standard output using printf() for debugging, no file handling */ /* is required. */ }; /* FILE is typedef’ d in stdio.h. */ #elif __ICCARM__ /* IAR support */ size_t __write(int handle, const unsigned char * buffer, size_t size) { size_t nChars = 0; if (buffer == 0) { /* This means that we should flush internal buffers. Since we*/ /* don't we just return. (Remember, "handle" == -1 means that all*/ /* handles should be flushed.)*/ return 0; } /* This function only writes to "standard out" and "standard err",*/ /* for all other file handles it returns failure.*/ if ((handle != _LLIO_STDOUT) && (handle != _LLIO_STDERR)) { return _LLIO_ERROR; } /* Send data.*/ while (size--) { UART_WriteByte(UART_DebugInstance, *buffer++); ++nChars; } return nChars; } size_t __read(int handle, unsigned char * buffer, size_t size) { size_t nChars = 0; uint16_t ch = 0; if (buffer == 0) { /* This means that we should flush internal buffers. Since we*/ /* don't we just return. (Remember, "handle" == -1 means that all*/ /* handles should be flushed.)*/ return 0; } /* This function only writes to "standard out" and "standard err",*/ /* for all other file handles it returns failure.*/ if ((handle != _LLIO_STDIN) && (handle != _LLIO_STDERR)) { return _LLIO_ERROR; } /* read data.*/ while (size--) { while(UART_ReadByte(UART_DebugInstance, &ch)); *buffer++ = (char)ch & 0xFF; ++nChars; } return nChars; } #endif /* comiler support */ /******************************************************************************* **函数名称:static void UART_putstr(const char *str) **功能描述:向USART1发送字符串 **入口参数:*str 发送字符串的首地址 **输出:发送完毕直接返回 *******************************************************************************/ static void UART_putstr(const char *str) { while(*str != '\0') { Uart1_SendData( *str++); } } static void printn(unsigned int n, unsigned int b) { static char *ntab = "0123456789ABCDEF"; unsigned int a, m; if (n / b) { a = n / b; printn(a, b); } m = n % b; Uart1_SendData( ntab[m]); } int UART_printf(const char *fmt, ...) { char c; unsigned int *adx = (unsigned int*)(void*)&fmt + 1; _loop: while((c = *fmt++) != '%') { if (c == '\0') return 0; Uart1_SendData(c); } c = *fmt++; if (c == 'd' || c == 'l') { printn(*adx, 10); } if (c == 'o' || c == 'x') { printn(*adx, c=='o'? 8:16 ); } if (c == 's') { UART_putstr((char*)*adx); } adx++; goto _loop; //return 0; } /* 主函数 */ int main(void) { number1 = 20; asm("sim"); //关闭系统总中断 CLK_CKDIVR = 0x00; //CPUDIV = 1 HSIDIV = 1 内部时钟 = 16Mhz UART1_Init(9600); //调用串口1初始化函数，并设置波特率为9600 bps asm("rim"); //打开系统总中断 printf("\r\nTest!!"); while(1) //进入死循环，等待串口接收中断 { delay(1000); printf("\r\nNumber1 = %d , Number2 = %s" , number1 , number2); } } /* 串口2接收数据中断服务函数 */ #pragma vector = 20 //设置串口1接收中断向量号 = 20 __interrupt void UART2_RX_RXNE(void) { unsigned char ch1; UART1_SR_RXNE = 1; //清除中断标志 ch1 = UART1_DR; //读出串口接收到的数据 Uart1_SendData(ch1); //把接收到的数据再通过串口发送出去 }