adc_c.c

// $Id: adc_c.c,v 1.2 2004-05-12 14:47:14 peter Exp $
#include  <msp430x14x.h>
#include "global.h"

extern u16 temp_hold;
extern u16 timer_sum_sleep;
extern u16 timer_sum_int;
extern u16 timer_hold;
extern u16 timer_sum;
extern u16 sleep;
extern u16 timer_sum_display;
extern u16 timer_sum_serial;
extern u16 timer_sum_adc;
extern u16 timer_sum_stat;
extern u16 why_job;

unsigned int results0[ADC_FIFO_RCV_LEN];
unsigned int results1[ADC_FIFO_RCV_LEN];
unsigned int results2[ADC_FIFO_RCV_LEN];
unsigned int results3[ADC_FIFO_RCV_LEN];
unsigned int results4[ADC_FIFO_RCV_LEN];
unsigned int results5[ADC_FIFO_RCV_LEN];
unsigned int results6[ADC_FIFO_RCV_LEN];
unsigned int results7[ADC_FIFO_RCV_LEN];
unsigned int results8[ADC_FIFO_RCV_LEN];

extern int error_adc;

extern int end_adc_conversion;

//extern u16 chanel;
//extern u16 chanel_convert;




extern volatile unsigned int  asp_trn_fifo_start;      /* serial transmit buffer start index      */

extern unsigned int  asp_trn_fifo_end;        /* serial transmit flash buffer end index        */


extern unsigned int  adc_rcv_fifo_start;      /* ADC receive buffer start index      */

extern volatile unsigned int  adc_rcv_fifo_end;        /* ADC receive  buffer end index        */


interrupt[ADC_VECTOR] void ADC12ISR (void)
{
    //int p=( & (ADC_FIFO_RCV_LEN-1))<<3;
    int sh;

    int temp_led;
    HOLD_TIME_IRQ()
    temp_led=P1OUT;
    P1OUT |= 0x01;                      // Set P1.0 LED on
    sh=(adc_rcv_fifo_end & (ADC_FIFO_RCV_LEN-1))*SIZE_OF_ADC_DUMP;

    results0[sh] = ADC12MEM0;               // Move results, IFG is cleared
    results1[sh] = ADC12MEM1;               // Move results, IFG is cleared
    results2[sh] = ADC12MEM2;               // Move results, IFG is cleared
    results3[sh] = ADC12MEM3;               // Move results, IFG is cleared
    results4[sh] = ADC12MEM4;               // Move results, IFG is cleared
    results5[sh] = ADC12MEM5;               // Move results, IFG is cleared
    results6[sh] = ADC12MEM6;               // Move results, IFG is cleared
    results7[sh] = ADC12MEM7;               // Move results, IFG is cleared
    results8[sh] = ADC12MEM8;               // Move results, IFG is cleared


    end_adc_conversion=1;
    adc_rcv_fifo_end++;

    P1OUT = temp_led;                     // return led state
    _BIC_SR_IRQ(CPUOFF);               // Clear LPM0, SET BREAKPOINT HERE
    SUM_TIME_IRQ();
}

//¤«ï ⥬¯¥à âãà­®£® ᥭá®à  sample period ¡®«¥¥ 30 mkS
void init_adc(void){

    //ADC12ON - ADC12 On
    //REFON   - Reference generator
    //MSC	  - Multiple sample and convertion
    //SHT0_xx - Sample-and-hold time. These bits define the number
    //	    of ADC12CLK cycles in the sampling period for
    //	    registers ADC12MEM0 to ADC12MEM7
    //SHT1_xx - Sample-and-hold time. These bits define the number
    //	    of ADC12CLK cycles in the sampling period for
    //	    registers ADC12MEM8 to ADC12MEM15
    ADC12CTL0 = ADC12ON+REFON+MSC+SHT0_15+SHT1_15;    // Turn on ADC12, set sampling time
    //REF2_5V
    //ADC12 SSELx Bits 4-3
    //	ADC12 clock source select
    //	00 ADC12OSC
    //	01 ACLK
    //	10 MCLK
    //	11 SMCLK
    //SHS bits 10-11 Source select for the sample-input signal.
    //0: Control bit ADC12SC is selected.
    //1: Timer_A.OUT1
    //2: Timer_B.OUT0
    //3: Timer_B.OUT1
    ADC12CTL1 = ADC12SSEL_3+ADC12DIV_1+SHP+CONSEQ_1+SHS_1;             // Use sampling timer, single sequence
    //SREFx Bits 6-4 Select reference
    //	000 VR+ = A VCC 	and VR- = A VSS - ®â 0 ¤® ¯¨â ­¨ï
    //	001 VR+ = V REF+ 	and VR- = A VSS - ®â 0 ¤® ¢­ãâà. ®¯®à­.
    //	010 VR+ = Ve REF+ 	and VR- = A VSS - ®â 0 ¤® ¢­¥è. ®¯®à­.
    //	011 VR+ = Ve REF+ 	and VR- = A VSS ???
    //	100 VR+ = A VCC 	and VR- = V REF- / Ve REF-
    //	101 VR+ = V REF+ 	and VR- = V REF- / Ve REF-
    //	110 VR+ = Ve REF+ 	and VR- = V REF- / Ve REF-
    //	111 VR+ = Ve REF+ 	and VR- = V REF- / Ve REF-
    ADC12MCTL0 = INCH_0+SREF_2;           // ref+=Ve REF,  channel = A0
    ADC12MCTL1 = INCH_1+SREF_2;           // ref+=Ve REF+, channel = A1
    ADC12MCTL2 = INCH_2+SREF_2;           // ref+=AVcc, channel = A2
    ADC12MCTL3 = INCH_3+SREF_2;           // ref+=AVcc, channel = A3,
    ADC12MCTL4 = INCH_4+SREF_2;           // ref+=AVcc, channel = A3,
    ADC12MCTL5 = INCH_5+SREF_2;           // ref+=AVcc, channel = A3,
    ADC12MCTL6 = INCH_6+SREF_2;           // ref+=AVcc, channel = A3,
    ADC12MCTL7 = INCH_7+SREF_2;           // ref+=AVcc, channel = A3,
    ADC12MCTL8 = INCH_10+SREF_1+EOS;      // ref+=AVcc, channel = A10, end seq.


    ADC12IE = 1<<8;                       // Enable ADC12IFG.3

    //  ADC12IE = 1<<0;                       // Enable ADC12IFG.3



    //  ADC12CTL0 |= ENC;                     // Enable conversions



    error_adc=0;
    end_adc_conversion=0;
    adc_rcv_fifo_end=0;
    adc_rcv_fifo_start=0;
    // chanel=0x0;
    // chanel_convert=0xFF;

}

int counter;
u16 work_with_adc_put(void){
    if (counter++>=1000){
        counter=0;
        //  put_packet_type4();
    }

    if (put_packet_type3(adc_rcv_fifo_start& (ADC_FIFO_RCV_LEN-1))){
        adc_rcv_fifo_start++;
        return 1;
    }

    return 0;
}