Hi,
I am a beginner in MSP430. I was going through the workshop videos of traning, In Lab3 there is an example where we run cpu with VLO(12Khz) by disabling System clock generator 0 and System clock generator 1 while i was writing that i forgot clear OFIFG in IFG1 register then also program compiled but the led started blinking faster than expected . I haven't written any interrupt routine to handle oscillator fault.
#include <msp430g2553.h>
/* Added because of inconsistency between
* the header files of msp430g2231.h and
* msp430g2553.h(i.e in msp430g2553.h assembly
* header file names
* of Timers are not renamed in c header file
*/
#ifndef TIMER0_A1_VECTOR
#define TIMER0_A1_VECTOR TIMERA1_VECTOR
#define TIMER0_A0_VECTOR TIMERA0_VECTOR
#endif
/*
* main.c
*/
void main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
P1DIR = BIT6+BIT0 ; //Configure P1.6 as output by writing 1 to corresponding pin
P1OUT &= ~(BIT0+BIT6); //make output of that pin as zero
BCSCTL3 |= LFXT1S_2; //Configure basic clock system+ to use VLO
//I forgot add the following line in my program
IFG1 &= ~OFIFG; //Disabling Oscillator interrupt pending flag
_bis_SR_register(SCG0+SCG1);
BCSCTL2 |= SELM_3 + DIVM_3;
while(1)
{
P1OUT |= BIT6; // LED on
_delay_cycles(100);
P1OUT &= ~BIT6 ; // LED off
_delay_cycles(5000);
}
}
Can some tell me the reason for fast blinking.
