Other Parts Discussed in Thread: MSP430G2231
Tool/software:
I have 4 products using the MSP430G2231 and MSP430G2553. I am working on a third using the timers that are critical to my company.
I wrote this short code to create a PWM waveforms from 3 pins of the MSP430G2553. The last time I ran it was in 2002 using Code Composer Ver10 10.1.1.00004 under windows 10.
The code ran great then. I recently attempted to try and toggle P1.2 using the timer on a MSP430G2231 and nothing happens. I can toggle the ports using while loops. But anything with the timer does not work. So I went back to the G2553 code and it doesn't work now.
I have tried debugging the issue see below.
- I tried using the same Launchpad on a different computer, No PWM
- I reverted back to the version 10.1.1 Code composer software, No PWM
- used a new out of the box Launchpad with a new G2553, No PWM
Please see the code below and the device settings of the G2553 on the launchpad.
// TA0CCR0 /* Timer A0 Capture/Compare 0 */
// TA0CCR1 /* Timer A0 Capture/Compare 1 */
// TA0CCR2 /* Timer A0 Capture/Compare 2 */
// TA1CCR0 /* Timer A1 Capture/Compare 0 */
// TA1CCR1 /* Timer A1 Capture/Compare 1 */
// TA1CCR2 /* Timer A1 Capture/Compare 2 */
// P2.2 Timer A1 CCR1 Out1
// P2.4 Timer A1 CCR1 Out2
// P1.2 Timer A0 CCR0 Out1
/**********************************************/
#include <msp430.h>
int main(void)
{
P1DIR |= BIT2; // P1.2 output
P1SEL |= BIT2; // P1.2 options select
P2DIR = 0x14; // Set P2.2 and P2.4 to the output direction.
P2SEL = 0x14; // Select P2.2 and P2.4 as our PWM output.
TA1CCR0 = 1000-1; // PWM Period
TA1CCTL1 = OUTMOD_7; // CCR1 reset/set
TA1CCR1 = 0; // P2.2 PWM duty cycle
TA1CCTL2 = OUTMOD_7;
TA1CCR2 = 0; // P2.4 PWM duty cycle (500 = 50%)
TA1CTL = TASSEL_2 + MC_1 + TACLR; // SMCLK, up mode, clear TAR
P1DIR |= BIT2; // P1.2 output
P1SEL |= BIT2; // P1.2 options select
TA0CCR0 = 1000-1; // PWM Period
TA0CCTL1 = OUTMOD_7; // CCR0 reset/set
TA0CCR1 = 1000; // P1.2 PWM duty cycle
TA0CTL = TASSEL_2 + MC_1 + TACLR; // SMCLK, up mode, clear TAR
// __bis_SR_register(LPM0_bits); // Enter LPM0
// __no_operation(); // For debugger
}
