#include <msp430x14x.h>
char MST_Data = 0xAA,SLV_Data = 0xff;
unsigned char a[12];
unsigned char b[12];
#define SPI_ENABLE P2OUT &=~0x08;
#define SPI_DISABLE P2OUT |=0x08;
unsigned char regdata[11]={0x02,0Xeb,0x10,0x05,0x05,0x00,0x00,0x00,0x03,0x01,0x03};//二通道心电测试信号，无呼吸0x02,0xeb,0x18,0x00,0x00,0x30,0x0f,0x40,0x02,0x01,0x03fCLK = 512 kHz

void Delay_ms(unsigned int n)
{
unsigned int l,m;
for(l=0;l<n;l++)
    for(m=0;m<1000;m++);
}
void Stop_Read_Data_Continuous (void)
{
    unsigned int i=0;
    SPI_ENABLE;                            // /CS enable
    for(i=0;i<10;i++);
    while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
    TXBUF1 =0x11;                              // Send SDATAC
    SPI_DISABLE;         // /CS disable
    for(i=0;i<10;i++);
}

void Start_Read_Data_Continuous (void)
{
    unsigned int i=0;
    SPI_ENABLE;
     for(i=0;i<10;i++);
    while (!(IFG2&UTXIFG1));                  // Wait for TXBUF ready
    TXBUF1 =0x10;                              // Send RDATAC
    SPI_DISABLE;
    for(i=0;i<10;i++);
}

void SPI_RegRead(unsigned char addr, unsigned char *buffer, unsigned char count)
{
unsigned int i=0,j=0;
Stop_Read_Data_Continuous ();     //When in RDATAC mode, the RREG command is ignored.Send SDATAC MUST BE SENT
   for(i=0;i<10;i++);
SPI_ENABLE;                         // /CS enable
for(j=0;j<10;j++);
while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
TXBUF1 =addr|0x20;                         // Send address
while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
TXBUF1 = 0x00|(count-1);                        // regedit count

for (i = 0; i<count;i++)
{

    while (!(IFG2&UTXIFG1));                  // Wait for TXBUF ready
    TXBUF1 = 0x00;                            //Initiate next data RX, meanwhile..
    Delay_ms(10);
    while (!(IFG2&URXIFG1));                  // Wait for TXBUF ready
    buffer[i] = RXBUF1;                    // Store data from last data RX
    TXBUF0= buffer[i];
    for(j=0;j<10;j++);


}

SPI_DISABLE;         // /CS disable
for(i=0;i<10;i++);
Start_Read_Data_Continuous ();
for(i=0;i<10;i++);

}
void SPI_Regwrite(unsigned char addr,unsigned char *data,unsigned char count)
{
unsigned int i=0,j=0;
Stop_Read_Data_Continuous ();
SPI_ENABLE;                            // /CS enable
while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
TXBUF1 =addr+0x40;   //发送地址信息; 首地址是0x01;(zhao)
while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
TXBUF1 =count-1; //发送header;              //发送的寄存器数量为10个（zhao）
for (i = 0; i<count;i++)
{
    while (!(IFG2&UTXIFG1));                 // Wait for TXBUF ready
    TXBUF1 =data[i];
    for(j=0;j<30;j++);
}

SPI_DISABLE;         // /CS disable
Start_Read_Data_Continuous ();

}

void intSPI1()
{
int i;
P5SEL |= 0x0E;                            // P5.1,2,3 SPI option select
P5OUT &= ~0x01;
P5DIR |= 0x01;

BCSCTL1 &= ~XT2OFF;                       // XT2on

do
{
IFG1 &= ~OFIFG;                           // Clear OSCFault flag
for (i = 0xFF; i > 0; i--);               // Time for flag to set
}
while ((IFG1 & OFIFG));                   // OSCFault flag still set?

BCSCTL2 |= SELM_2 + SELS;                 // MCLK = SMCLK = XT2 (safe)

U1CTL = CHAR + SYNC + MM + SWRST;         // 8-bit, SPI, Master
U1TCTL = CKPL + SSEL1 + STC;              // Polarity, SMCLK, 3-wire
U1BR0 = 0x00;                             // SPICLK = SMCLK/2
U1BR1 = 0x03;
U1MCTL = 0x00;
ME2 |= USPIE1;                            // Module enable
U1CTL &= ~SWRST;                          // SPI enable

IE2 |= URXIE1 ;                   // RX and TX interrupt enable
}

void intUART0()
{
P3SEL |= 0x30;                            // P3.4,5 = USART0 TXD/RXD
ME1 |= UTXE0 + URXE0;                     // Enable USART0 TXD/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
IE1 |= URXIE0;                            // Enable USART0 RX interrupt
}

void main( void )
{

WDTCTL = WDTPW + WDTHOLD;       //关闭看门狗
P1OUT = 0x00;
P1IE |=0xff;                  //P1模块中断允许
P1IES |= 0xff;                 //下降沿触发
P1IFG = 0x00;                  //中断标志位清零
P2DIR |= 0x00f;                   //0,1,2,3输出
P2OUT |=0x01;                     //START,RST高电平
// P2OUT |=0x02;                     //START,RST高电平
P5SEL = 0x020;                  //设置P3端口为SPI模式

intSPI1();
intUART0();
Delay_ms(5);

//SPI_RegRead(0x00,a,12); //读取初始寄存器，检验电路连接是否正确
Delay_ms(5);
SPI_Regwrite(0x01,regdata,11);   //写入配置寄存器，
Delay_ms(5);
SPI_RegRead(0x00,b,12); // 再次读出寄存器   检验是否写入正确
// Delay_ms(5);
SPI_ENABLE;
Delay_ms(5);
P2OUT |=0x02;                     //START,RST高电平
   Delay_ms(5);
_EINT();
while(1)
{
};
    //LPM0;                         //关CPU，进入低功耗模式

}

#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{
   while (!(IFG1 & UTXIFG0));                // USART0 TX buffer ready?
                        // RXBUF0 to TXBUF0
_BIC_SR_IRQ(LPM3_bits);                   // Clear LPM3 bits from 0(SR)
}

#pragma vector = PORT1_VECTOR      //P1中断服务子程序
__interrupt void P1_Interrupt(void)
{
unsigned char i=0;
if(P1IFG==0x01)
{
    P1IFG=0;                    //清除标志位
     for(i=0;i<9;i++)
          {
             while (!(IFG2&UTXIFG1));                  // Wait for TXBUF ready
             TXBUF1 = 0x00;                            //Initiate next data RX, meanwhile..
             Delay_ms(5);
             while (!(IFG2&URXIFG1));                  // Wait for TXBUF ready
             TXBUF0 = RXBUF1;
             Delay_ms(5);

          }

}
else
    P1IFG=0;                    //清除标志位
}

0 user5322667 7 年多前回复 zhao fang chong zhao

Prodigy 30 points

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