MSP430F2013

Development Boards MicroMod
1

Hi!

Here is my code. It is able to measure the two analog inputs, also the counter on P1.1 is fine. I am not able to copy the content to a variable. I do not know why. Does anyone has a solution?

Thank You.

[/code]

#include <msp430x20x3.h>

//#include <>

void power_compare(void);

void cap_state(void);

unsigned int U;

unsigned int i;

//unsigned int d=0;

unsigned short Usp;

unsigned int Ucap;

unsigned long I;

unsigned int roll =0;

unsigned int charge = 1;

unsigned int period = 20;

unsigned int DC=1;

unsigned int prevP=0;

unsigned long int P=0;

int a1;

int a2;

int a3;

void main(void)

{

WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer

P1DIR = 0x0D; // pin P1.0,P1.2,P1.3 output

P1DIR |= 0x04; // P1.2 and P1.3 output

P1SEL |= 0x04; // P1.2 and P1.3 TA1/2 options

CCR0 = period; // PWM Period/2

CCTL1 = OUTMOD_7; // CCR1 toggle/set

CCR1 = DC; // CCR1 PWM duty cycle

TACTL = TASSEL_2 + MC_1; // SMCLK, up-down mode

while(1)

{

a1=1;

P1IE |= 0x02; // P1.4 interrupt enabled

P1IFG &= ~0x10; // P1.4 IFG cleared

_BIS_SR(GIE);

//a1=1;

while(a1){}

P1IE &= ~0x02; // interrupr disabled

SD16CTL = SD16REFON + SD16SSEL_1; // 1.2V ref, SMCLK

SD16INCTL0 = SD16INCH_2 ; // A2+/-

SD16CCTL0 = SD16UNI + SD16IE; // 256OSR, unipolar, interrupt enable

SD16AE = SD16AE4; // P1.4 A2+,P1.6 A3+ A1- = VSS

SD16CCTL0 |= SD16SC; // Set bit to start conversion

Usp=U;

SD16CCTL0 &= ~SD16IE;

SD16CTL = SD16REFON + SD16SSEL_1; // 1.2V ref, SMCLK

SD16INCTL0 = SD16INCH_3; // A1+/-

SD16CCTL0 = SD16UNI + SD16IE; // 256OSR, unipolar, interrupt enable

SD16AE = SD16AE6; // P1.1 A1+, A1- = VSS

SD16CCTL0 |= SD16SC; // Set bit to start conversion

Ucap=U;

SD16CCTL0 &=~SD16IE;

_BIS_SR(GIE);

power_compare();

cap_state();

prevP=P;

CCR1=DC;

}

}

// interrupt of ADC16:

#pragma vector = SD16_VECTOR

__interrupt void SD16ISR(void)

{

U=SD16MEM0;

}

// Port 1 interrupt service routine

#pragma vector=PORT1_VECTOR

__interrupt void Port_1(void)

{

I=0;

while(P1IN & 0x02) // Current Measurement

I=I+1; // count current duty-cycle length

a1=0;

P1IFG &= ~0x02; // P1.4 IFG cleared

}[/code][/code]

2

After you started the conversion:

SD16CCTL0 |= SD16SC; // Set bit to start conversion

It takes time to finish the conversion and generates an interrupt, etc. But your code says:

Usp=U;

immediately. And subsequently you changed the SD16 registers and re-started the conversion again. The first conversion never got a chance to finish.

You keep repeating the above, thus the SD16 never finishs a single conversion.

3

Thank you very much. You don’t know how much I appreciate your reply.