基于MSP430F249的串口+数码管显示仿真(源码+仿真）

/****************************************************************** * 实验名称：串口通信仿真(MSP430F249) * * 实验说明： * 通设置系统主时钟(MCLK=8Mhz ) 、辅助时钟(ACLK=8Mhz )、 * 子系统时钟(SMCLK=8Mhz ) * 编译软件：Embedded Workbench 5.3 * *仿真软件：proteus7.7 sp 2 * *作者：hameyou QQ:385434903 * *日期：2010-7-31 ******************************************************************/ #include <MSP430x24x.h> #include<string.h> #define uchar unsigned char #define uint unsigned int uchar const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, //共阴数码管段选码表，无小数点 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; uchar Disbuf[8],Index; uchar RXbbuf[4]; uchar data1; void delayms(uint t) { uint i; while(t--) //for(i=1330;i>0;i--);//进过参数的调整 for(i=150;i>0;i--);//进过参数的调整 } void InitUART0(void) { if (CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF) { while(1); // If calibration constants erased // do not load, trap CPU!! } BCSCTL1 = CALBC1_1MHZ; // Set DCO DCOCTL = CALDCO_1MHZ; P3SEL = 0x30; // P3.4,5 = USCI_A0 TXD/RXD UCA0CTL1 |= UCSSEL_2; // SMCLK UCA0BR0 = 104; // 1MHz 9600; (104)decimal = 0x068h UCA0BR1 = 0; // 1MHz 9600 UCA0MCTL = UCBRS0; // Modulation UCBRSx = 1 UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine** IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt } void SendData(uchar Data) { UCA0TXBUF = Data; // TX -> RXed character while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready? } void SendChars(char *p) { uchar len; len=strlen(p); while(len) { SendData(*p); p++; len--; } } void RxDataProcess(uchar Data) { signed char i; for(i=0;i<3;i++) { RXbbuf[i]=RXbbuf[i+1]; } RXbbuf[3]=Data; for(i=0;i<4;i++) { Disbuf[2*i]=table[RXbbuf[i]/16]; Disbuf[2*i+1]=table[RXbbuf[i]%16]; } } void main(void) { WDTCTL=WDTPW + WDTHOLD; // 关闭看门狗 P4DIR=0x01; P1DIR=0xFF; // 设置方向 P1SEL=0; // 设置为普通I/O 口 P2DIR=0xFF; // 设置方向 P2SEL=0; // 设置为普通I/O 口 P1OUT=0x00; P2OUT=0xFF; InitUART0(); SendChars("Press any Key.....\r"); _BIS_SR(LPM0_bits+ GIE);//进入低功耗睡眠模式 while(1) { P2OUT=0xFF; P1OUT=Disbuf[Index]; P2OUT=~(1<<Index); if(++Index==8) Index=0; delayms(1); } } #pragma vector=USCIAB0RX_VECTOR __interrupt void usart0_rx (void) { while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready? UCA0TXBUF = UCA0RXBUF; // TX -> RXed character RxDataProcess(UCA0RXBUF); LPM0_EXIT; }