I thought that by setting this the clock source changes to 32KHz
crystal (I was following the MSP430 User Guide). Anyhow, I tried to
run code without this, it still doesn't work....

--- In m...@yahoogroups.com, "old_cow_yellow"
wrote:
>
> You have: "BCSCTL3 |= LFXT1S_0;".
>
> I can't figure out what effect it has.
>
> --- In m...@yahoogroups.com, "stanci10" wrote:
> >
> > Hi!
> >
> > I can't figure out what is wrong with my piece of code: basically, I
> > took SimpliciTI code and I wanted to change clock from VLO to 32KHz
> > crystal. I thought that all I need to do is to change one line of
> > code; instead of:
> >
> > //BCSCTL3 |= LFXT1S_2;
> > put
> > //BCSCTL3 |= LFXT1S_0;
> >
> > ... but after that my timer didn't work. So, to make it simpler, I
> > wrote small program where, if I change LFXT1S_0 to LFXT1S_2, the
> > program works (it uses VLO) but when I change clock to LFXT1S_2 I
> > still don't have that TimerA pops up. This program is shown below.
> > I'm using ez430-rf2500 TI mote.
> >
> > I looked into the examples I found on TI website, but I still really
> > need help to figure out why is this not working!
> > Could you please help me?
> >
> > Thank you!
> >
> >
> >
> >
> > #include "msp430x22x4.h"
> > #include "bsp_leds.h"
> > #include "bsp_buttons.h"
> >
> > void MCU_Init(void);
> > void toggleLED(uint8_t which);
> > void doSomething(void);
> > int trigger;
> >
> > void main (void)
> > {
> >
> > WDTCTL = WDTPW + WDTHOLD; // Stop WDT
> > {
> >
> > volatile int i;
> > for(i = 0; i < 0xFFFF; i++){}
> > }
> >
> > BSP_Init();
> >
> > MCU_Init();
> >
> > doSomething();
> >
> > }
> >
> > void doSomething()
> > {
> >
> > while(1)
> > {
> >
> > if (trigger)
> > {
> > toggleLED(1);
> > toggleLED(2);
> > trigger = 0;
> > }
> > }
> > }
> >
> /*------------------------------------------------------------------------------
> > *
> ------------------------------------------------------------------------------*/
> > void MCU_Init()
> > {
> >
> > //BCSCTL1 &= ~(XTS);
> > BCSCTL3 |= LFXT1S_0;
> >
> > TACCR0 = 10000;
> > TACTL = TASSEL_1 + MC_1; // ACLK, upmode
> > TACCTL0 = CCIE; // TACCR0 interrupt
enabled
> >
> > __enable_interrupt();
> > }
> >
> >
> /*------------------------------------------------------------------------------
> > * Toggle LEDs
> ------------------------------------------------------------------------------*/
> > void toggleLED(uint8_t which)
> > {
> > if (1 == which)
> > {
> > BSP_TOGGLE_LED1();
> > }
> > else if (2 == which)
> > {
> > BSP_TOGGLE_LED2();
> > }
> > return;
> > }
> >
> /*------------------------------------------------------------------------------
> > * Timer A0 interrupt service routine
> ------------------------------------------------------------------------------*/
> > #pragma vector=TIMERA0_VECTOR
> > __interrupt void Timer_A (void)
> > {
> > trigger = 1;
> >
> > }
>
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