TEXAS ADC ADS122U04 mbed LPC1768 1CH Sample Program

LPC1768_ADS122U04_test_00.c

//----------------Texsus ADS122U04--------------------------
#include "mbed.h"
Serial pc(USBTX,USBRX);
Serial device(p9, p10);//p9TX p10RX
DigitalOut myled(LED1);
InterruptIn  DRDY(p8);//DataRdy Pin
Timer t;
int  RREGwait;
uint8_t RR0,RR1,RR2,RR3,RR4;
int  DRDYflag=0;
//==================InterruptIn DRDY==================== 
void flip() {
    
      device.putc(0x55);
      device.putc(0x10);
         wait_us(10);
        uint8_t  d0=device.getc();
         //wait_us(100);
       uint8_t  d1=device.getc();
        wait_us(10);
       uint8_t d2=device.getc();
        wait_us(10);
        int data=d0+d1*256+d2*65536;
       //pc.printf("d0=%x,d1=%x,d2=%x,data=%d\n\r",d0,d1,d2,data);
       pc.printf("%d,%8.0f\n\r",data,t.read_us());
       //myled = !myled;
    //pc.printf("-------------DRDY Falled----------------\n\r");
     
}
//===========================================================
int main() {
    pc.baud(115200);
    device.baud(115200);
    DRDY.fall(&flip);  // attach the address of the flip function to the rising edge
    //ADS122U04 RESET
     device.putc(0x55);
     device.putc(0x06);
      wait_us(1000);
      
    //
    //================Register Setting=============================================================================
        RREGwait=500;//RREG wait time usec 2*Tbaud(10usec)
  //-----Register00[7:4(MUX)3:1(GAIN)0(PGA_BYPASS)]--------------------------------------------------------------
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x40);//WriteREGister 0x04 0x00(0000register00 Selected)
      device.putc(0x0E);//7:0(0000 1110=0x0E)[7:4(0000)MUX AINp=AIN0,AINn=AIN1 3:1(111)GAIN128, 0:0(0)PGA enabled]
      wait_us(1000);
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x20);//Synchronization word 0x55
      wait_us(RREGwait);
       if (device.readable())
      {
        RR0=device.getc();
      }
       wait_us(1000);
       pc.printf("\n\r");
       pc.printf("********0x0E:");
      pc.printf("RR0=%x\n\r",RR0);
      
      
  //-----Register01[7:5(DataRate)4:(OperationMode)3:(ConversionMode)2:1(VREF)0:(TemperatureSensor mode)]---------
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x42);// WriteREGister 0x04 0x02(0010register01 Selected)
      device.putc(0xAE);//7:0(1010 1110=0xAE)[7:5(101)DataRate600sps,4:(0)NormalMode, 3:(1)Continuous conversion mode,2:1(11)VDD-VSS VRef,0:(0)Temp disabled]
       wait_us(1000);
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x22);//Synchronization word 0x55 Bug Fixed 0x21=>0x22 (2021/9/7)
       wait_us(RREGwait);
       if (device.readable())
      {
        RR1=device.getc();
      }
       wait_us(1000);
      pc.printf("*********0xA8:");
      pc.printf("RR1=%x\n\r",RR1);
    
      
  //-----Register02[7:DRDY)6:(DCNT)5:4(CRC)3:(BCS)2:0(IDAC)]-----------------------------------------------------
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x44);// WriteREGister 0x04 0x04(0100register02 Selected)
      device.putc(0x08);//7:0(0000 1000=0x08)[7:(0)DRDY,6:(0)DCNT disable, 5:4(00)) inverte,3:(1)BCS On,2:0(0)IDAC off]
       wait_us(1000);
       device.putc(0x55);//Synchronization word 0x55
      device.putc(0x24);//Synchronization word 0x55  Bug Fixed 0x22=>0x24 (2021/9/7)
       wait_us(RREGwait);
       if (device.readable())
      {
        RR2=device.getc();
      }
       wait_us(1000);
       pc.printf("********0x08:");
      pc.printf("RR2=%x\n\r",RR2);
       
  //----Register03[7:5(I1MUX)4:2(I2MUX)1(RSERVED)0(AUTO)]----------------------------------------------------
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x46);// WriteREGister 0x04 0x06(0110register03 Selected)
      device.putc(0x00);//7:0(00000000=0x00)[7:5(000)default,4:2(000)default, 1:(0)Reserved,0:(0)Manual Read
       wait_us(1000);
       device.putc(0x55);//Synchronization word 0x55
      device.putc(0x26);//Synchronization word 0x55 Bug Fixed 0x23=>0x26 (2021/9/7)
       wait_us(RREGwait);
       if (device.readable())
      {
        RR3=device.getc();
      }
       wait_us(1000);
      pc.printf("*********0x00:");
      pc.printf("RR3=%x\n\r",RR3);
     wait_us(1000);
  //----Register04[7:(Reserved)6:(GPIO2DIR)5:(GPIO1DIR)4:(GPIO0DIR)3:(GPIO2SEL)2:(GPIO2DAT)1:(GPIO1DAT)0:(GPIODAT0)]----------------------------------------------------
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x48);// WriteREGister 0x04 0x08(1000register04 Selected)
      device.putc(0x48);//7:0(0100 1000=0x08)[6:(1)GPIO2output,5:(0)GPIO1Input, 4:(0)GPIO0Input,3:(1)GPIO2SEL DRDY,2:(0)GPIO2DAT Low,1:(0)GPIO1DAT Low,0:(0)GPIO0DAT Low          
       wait_us(1000);
      device.putc(0x55);//Synchronization word 0x55
      device.putc(0x28);//Synchronization word 0x55  Bug Fixed 0x24=>0x28 (2021/9/7)
        wait_us(RREGwait);
      if (device.readable())
      {
        RR4=device.getc();
      }
     wait_us(1000);
      pc.printf("*********0x48:");
      pc.printf("RR4=%x\n\r",RR4);
     
      //Start/Sync
              device.putc(0x55);
              device.putc(0x08);
               wait_us(100);//************************このWAIT重要************************************
       t.start();
  //====================LOOP======================================
    while(0)
     {
        
          
        
    }
}