Tool/software: Code Composer Studio
Hello,
I started writing a code for a program that samples 2 analog signals from port 0 and 1, and control frequency and width factor for two outputs pin 6 and pin 7, the program builds, compiles but it doesn't do what I want, pin 6 has a impulse signal that is fixed and pin 7 has a continuous signal. I am close to a deadline and I also didn't have much time for this to begin with (2 days with other things to do as well). Any idea will help.
Thank you.
Below the code i have written
#include <msp430.h>
// Global Variables
unsigned int adc[2] = {0}; // This will hold the FREQ and PWM values
unsigned int FREQ;
unsigned int PWM;
unsigned int i;
unsigned int j;
unsigned int k;
//Function Prototypes
void Setup_HW(void); // Setup watchdog timer, clockc, ADC ports
void Read_Acc(void); // This function reads the ADC and stores the FREQ and PWM values
int main(void)
{
Setup_HW();
P1DIR |= BIT6;
P1DIR |= BIT7;
while (1)
{
Read_Acc(); // This function reads the ADC and stores the FREQ and PWM values
for(k=0;k>100;k++); //Small delay between alternating pulses
P1OUT ^= 0x20; //Pin 6 output set to 1
for(k=0;k>100;k++); //Small delay between alternating pulses
i=100*(FREQ-((PWM/1024)*FREQ));
for(;i=0;i--); //Delay generated by potentiometers
P1OUT ^= 0x20; //Pin 6 output set to 0
for(k=0;k>100;k++); //Small delay between alternating pulses
P1OUT ^= 0x40; //Pin 7 output set to 1
for(k=0;k>100;k++); //Small delay between alternating pulses
j=100*(FREQ-(FREQ-((PWM/1024)*FREQ)));
for(;j=0;j--); //Delay generated by potentiometers
P1OUT ^= 0x40; //Pin 7 output set to 0
}
}
// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
__bic_SR_register_on_exit(CPUOFF); // Clear CPUOFF bit from 0(SR)
}
void Setup_HW(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
ADC10CTL1 = INCH_2 + CONSEQ_1; // A1/A0, single sequence
ADC10CTL0 = ADC10SHT_2 + MSC + ADC10ON + ADC10IE;
ADC10DTC1 = 0x02; // 2 conversions
ADC10AE0 |= 0x02; // Disable digital I/O on P1.0 and P1.1
}
void Read_Acc(void)
{
ADC10CTL0 &= ~ENC;
while (ADC10CTL1 & BUSY); // Wait if ADC10 core is active
ADC10SA = (unsigned int)adc; // Copies data in ADC10SA to unsigned int adc array
ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start
FREQ = adc[0]; // adc array 0 copied to the variable FREQ
PWM = adc[1]; // adc array 1 copied to the variable PWM
__bis_SR_register(CPUOFF + GIE); // LPM0, ADC10_ISR will force exit
}
