I use iLLD for my developing. In the program I use STM for system timer.I have two problems:
1.This is the initialization of the STM module.
void TimerInit(void)
{
TimerReset();
ticks = IfxStm_getTicksFromMicroseconds(&MODULE_STM0, 1000);
ticksStart = IfxStm_get(&MODULE_STM0);
IfxStm_enableOcdsSuspend(&MODULE_STM0);
millisecond_counter = 0;
}
In main loop function, I check the timer whether the 1ms is reached and increase the timer millisecond_counter.
void TimerUpdate(void)
{
uint64 ticksNow = 0;
ticksNow= IfxStm_get(&MODULE_STM0);
if (ticksNow >= (ticksStart + ticks))
{
ticksStart = ticksNow;
millisecond_counter++;
}
}
If I do some Flash operation,erase and write(i also call the TimerUpdate() function to get timer),there will be trigger a trap:IfxCpu_Trap_Class_contextManagement() and program stoped. why ?
2.To realize the same function,i used STM's compare.
void TimerInit(void)
{
TimerReset();
ticks = IfxStm_getTicksFromMicroseconds(&MODULE_STM0, 1000);
ticksStart = IfxStm_get(&MODULE_STM0);
IfxStm_enableOcdsSuspend(&MODULE_STM0);
IfxStm_initCompareConfig(&stmCompareConfig);
stmCompareConfig.ticks = ticks;
IfxStm_initCompare(&MODULE_STM0, &stmCompareConfig);
millisecond_counter = 0;
}
In the TimerUpdate(),I check the compare flag.
void TimerUpdate(void)
{
if (IfxStm_isCompareFlagSet(&MODULE_STM0, stmCompareConfig.comparator))
{
IfxStm_clearCompareFlag(&MODULE_STM0, stmCompareConfig.comparator);
IfxStm_increaseCompare(&MODULE_STM0, stmCompareConfig.comparator, stmCompareConfig.ticks);
millisecond_counter++;
}
}
In the Flash operation, the compare flag will not be set.But other times it works.
I want to know what's wrong with the code?Thanks.
