MSP430F149单片机与89C51单片机之间过串口通信传输数据的程序???
我前做串口试验MSP430F149程序----------------------------------------------------------------------------------------------------------------------#include #include "uart0。 h"#include "uart0。c"#define uchar unsigned char#define uint unsigned intuchar data=8;uchar mm;//约秒延void delay(){ uint m=40000,n=200; /...全部
我前做串口试验MSP430F149程序----------------------------------------------------------------------------------------------------------------------#include #include "uart0。
h"#include "uart0。c"#define uchar unsigned char#define uint unsigned intuchar data=8;uchar mm;//约秒延void delay(){ uint m=40000,n=200; //5ms while(n--) { for(;m>0;m--); }}void main(void){ P1DIR = 0XFF;P1OUT = 0XFF; P2DIR = 0XFF;P2OUT = 0XFF; P3DIR = 0XFF;P3OUT = 0XFF; P4DIR = 0XFF;P4OUT = 0XFF; P5DIR = 0XFF;P5OUT = 0XFF; P6DIR = 0XFF;P6OUT = 0XFF; WDTCTL = WDTPW WDTHOLD; // 关闭看门狗 P6DIR |= BIT2;P6OUT |= BIT2; //关闭电平转换 InitUART(); //串口初始化 IE1 |= URXIE0; // 使能USART0接收断 while(1) { _EINT(); //打全局断 LPM1; //进入LPM1模式 while (!(IFG1 & UTXIFG0)); //等待前字符发送完毕 TXBUF0 = RXBUF0; //收字符发送 mm = RXBUF0; P2OUT = mm; delay(); delay(); TXBUF0 = RXBUF0; //收字符发送 }}/*******************************************函数名称:UART0_RXISR功 能:UART0接收断服务函数唤醒 CPU使退低功耗模式参 数:返值 :********************************************/#pragma vector = UART0RX_VECTOR__interrupt void UART0_RXISR(void){ LPM1_EXIT; //退低功耗模式}----------------------------------------------------------------------------------------------------------------------//串口源文件(。
c)#include typedef unsigned char uchar;/*******************************************函数名称:InitUART功 能:初始化UART端口参 数:返值 :********************************************/void InitUART(void){ P3SEL |= 0x30; // P3。
4,5 = USART0 TXD/RXD ME1 |= URXE0 UTXE0; // Enable USART0 T/RXD UCTL0 |= CHAR; // 8-bit character UTCTL0 |= SSEL0; // UCLK = ACLK UBR00 = 0x03; // 32k/9600 - 3。
41 UBR10 = 0x00; // UMCTL0 = 0x4A; // Modulation UCTL0 &= ~SWRST; // Initialize USART state machine}/*******************************************函数名称:Send1Char功 能:向PC机发送字符参 数:sendchar--要发送字符返值 :********************************************/void Send1Char(uchar sendchar){ while (!(IFG1 & UTXIFG0)); //等待发送寄存器空 TXBUF0 = sendchar; }/*******************************************函数名称:PutSting功 能:向PC机发送字符串参 数:ptr--指向发送字符串指针返值 :********************************************/void PutString(uchar *ptr){ while(*ptr != ' ') { Send1Char(*ptr ); // 发送数据 } while (!(IFG1 & UTXIFG0)); TXBUF0 = '
'; //发送换行指令}/*******************************************函数名称:Get1Char功 能:接收自PC机字符参 数:返值 :接收字符********************************************/unsigned char Get1Char(void){ while (!(IFG1 & URXIFG0)); //等待接收字符 断IFG1=0X82 return RXBUF0;}----------------------------------------------------------------------------------------------------------------------//串口文件(。
h)void InitUART(void);void Send1Char(unsigned char sendchar);void PutString(unsigned char *ptr);void PutString0(unsigned char *ptr);unsigned char Get1Char(void); -=-=-===-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=51串口程序#include "reg51。
h"#include "intrins。h"typedef unsigned char BYTE;typedef unsigned int WORD;#define FOSC 18432000L //System frequency#define BAUD 9600 //UART baudrate/*Define UART parity mode*/#define NONE_PARITY 0 //None parity#define ODD_PARITY 1 //Odd parity#define EVEN_PARITY 2 //Even parity#define MARK_PARITY 3 //Mark parity#define SPACE_PARITY 4 //Space parity#define PARITYBIT EVEN_PARITY //Testing even paritysbit bit9 = P2^2; //P2。
2 show UART data bit9bit busy;void SendData(BYTE dat);void SendString(char *s);void main(){#if (PARITYBIT == NONE_PARITY) SCON = 0x50; //8-bit variable UART#elif (PARITYBIT == ODD_PARITY) || (PARITYBIT == EVEN_PARITY) || (PARITYBIT == MARK_PARITY) SCON = 0xda; //9-bit variable UART, parity bit initial to 1#elif (PARITYBIT == SPACE_PARITY) SCON = 0xd2; //9-bit variable UART, parity bit initial to 0#endif TMOD = 0x20; //Set Timer1 as 8-bit auto reload mode TH1 = TL1 = -(FOSC/12/32/BAUD); //Set auto-reload vaule TR1 = 1; //Timer1 start run ES = 1; //Enable UART interrupt EA = 1; //Open master interrupt switch SendString("STC89-90xx
Uart Test !
"); while(1);}/*----------------------------UART interrupt service routine----------------------------*/void Uart_Isr() interrupt 4 using 1{ if (RI) { RI = 0; //Clear receive interrupt flag P0 = SBUF; //P0 show UART data bit9 = RB8; //P2。
2 show parity bit } if (TI) { TI = 0; //Clear transmit interrupt flag busy = 0; //Clear transmit busy flag }}/*----------------------------Send a byte data to UARTInput: dat (data to be sent)Output:None----------------------------*/void SendData(BYTE dat){ while (busy); //Wait for the completion of the previous data is sent ACC = dat; //Calculate the even parity bit P (PSW。
0) if (P) //Set the parity bit according to P {#if (PARITYBIT == ODD_PARITY) TB8 = 0; //Set parity bit to 0#elif (PARITYBIT == EVEN_PARITY) TB8 = 1; //Set parity bit to 1#endif } else {#if (PARITYBIT == ODD_PARITY) TB8 = 1; //Set parity bit to 1#elif (PARITYBIT == EVEN_PARITY) TB8 = 0; //Set parity bit to 0#endif } busy = 1; SBUF = ACC; //Send data to UART buffer}/*----------------------------Send a string to UARTInput: s (address of string)Output:None----------------------------*/void SendString(char *s){ while (*s) //Check the end of the string { SendData(*s ); //Send current char and increment string ptr }}。
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