Hi:
I am observing that Timers 1 and 2 on the VC5504 don't work unless Timer 0 is enabled. If I try to use either Timer 1 or Timer 2 alone without enabling neither one works. I am using the CSl Timer code with slight modifications. Below is the file in which I configure the timers. Could you please help? Thanks a lot.
Cheers,
Mushtaq
#include "GPTimer0.h"
#include "sysdef.h"
void CSL_gpt0Config(void)
{
/* Open the CSL GP Timer0 module */
hGpt0 = GPT_open (GPT_0, &gpt0Obj, &status);
// Configure GPT module //
hwGpt0Config.autoLoad = GPT_AUTO_ENABLE;
hwGpt0Config.ctrlTim = GPT_TIMER_ENABLE;
hwGpt0Config.preScaleDiv = GPT_PRE_SC_DIV_7; //Divide CPU clock by 256.
hwGpt0Config.prdLow = 0x0100;
hwGpt0Config.prdHigh = 0x00;
GPT_reset(hGpt0);
GPT_config(hGpt0, &hwGpt0Config);
//GPT_start(hGpt0);
//GPT_stop(hGpt0); */
/* Reset the GPT module //
hGpt1 = GPT_open (GPT_1, &gpt1Obj, &status);
hwGpt1Config.ctrlTim = GPT_TIMER_ENABLE;
hwGpt1Config.preScaleDiv = GPT_PRE_SC_DIV_7; //Divide CPU clock by 256.
hwGpt1Config.prdLow = 0x0100;
hwGpt1Config.prdHigh = 0x00;
GPT_reset(hGpt1);
GPT_config(hGpt1, &hwGpt0Config);
// Start the Timer //
GPT_start(hGpt1); */
/* Reset the GPT module */
hGpt2 = GPT_open (GPT_2, &gpt2Obj, &status);
hwGpt2Config.ctrlTim = GPT_TIMER_ENABLE;
hwGpt2Config.preScaleDiv = GPT_PRE_SC_DIV_7; //Divide CPU clock by 256.
hwGpt2Config.prdLow = 0x0100;
hwGpt2Config.prdHigh = 0x00;
GPT_reset(hGpt2);
GPT_config(hGpt2, &hwGpt2Config);
// Start the Timer //
GPT_start(hGpt2); //
INT_ENABLE;
IRQ_setVecs((Uint32)(&VECSTART)); //Mushtaq 072210 Setup entry into interrupt vector table.
IRQ_plug(TINT_EVENT, &gpt0Isr); //Mushtaq 072210 Plug in Timer0 ISR. Interrupt not enable yet.
IRQ_enable(TINT_EVENT); //Enable Timer0 interrupt.
//IRQ_disable(TINT_EVENT); //Enable Timer0 interrupt.
//IRQ_globalEnable();
}
interrupt void gpt0Isr(void)
{
long temp;
IRQ_clear(TINT_EVENT);
temp = CSL_SYSCTRL_REGS->TIAFR;
CSL_SYSCTRL_REGS->TIAFR = 0x04; //Clear Timer 0 interrupt flag in TIAFR.
//IRQ_disable(TINT_EVENT); //Disable timer interrupts.
}
/* Read the Timer Count */
Uint32 getTimeStamp(void)
{
GPT_getCnt(hGpt0, &timeCntGpt0);
return (timeCntGpt0);
}
