// This will call all the state machine's tick functions and
// increment isr_functionCallCount.
void isr_function() {
simonControl_tick();
flashSequence_tick();
verifySequence_tick();
buttonHandler_tick();
isr_functionCallCount++;
}
int main() {
//buttonHandler_runTest(10);
//flashSequence_runTest();
//verifySequence_runTest();
// The formula for computing the load value is based upon the formula from 4.1.1 (calculating timer intervals)
// in the Cortex-A9 MPCore Technical Reference Manual 4-2.
// Assuming that the prescaler = 0, the formula for computing the load value based upon the desired period is:
// load-value = (period * timer-clock) - 1
// Initialize the GPIO LED driver and print out an error message if it fails (argument = true).
// You need to init the LEDs so that LD4 can function as a heartbeat.
leds_init(true);
// Init all interrupts (but does not enable the interrupts at the devices).
// Prints an error message if an internal failure occurs because the argument = true.
interrupts_initAll(true);
interrupts_setPrivateTimerLoadValue(TIMER_LOAD_VALUE);
u32 privateTimerTicksPerSecond = interrupts_getPrivateTimerTicksPerSecond();
printf("private timer ticks per second: %ld\n\r", privateTimerTicksPerSecond);
// Allow the timer to generate interrupts.
interrupts_enableTimerGlobalInts();
// Initialization of the Simon game state machines is not time-dependent so we do it outside of the state machine.
display_init();
display_fillScreen(DISPLAY_BLACK);
// Keep track of your personal interrupt count. Want to make sure that you don't miss any interrupts.
int32_t personalInterruptCount = 0;
// Start the private ARM timer running.
interrupts_startArmPrivateTimer();
// Enable interrupts at the ARM.
interrupts_enableArmInts();
// interrupts_isrInvocationCount() returns the number of times that the timer ISR was invoked.
// This value is maintained by the timer ISR. Compare this number with your own local
// interrupt count to determine if you have missed any interrupts.
double *seconds;
while (interrupts_isrInvocationCount() < (TOTAL_SECONDS * privateTimerTicksPerSecond)) {
if (interrupts_isrFlagGlobal) { // This is a global flag that is set by the timer interrupt handler.
// Count ticks.
personalInterruptCount++;
verifySequence_tick();
flashSequence_tick();
buttonHandler_tick();
intervalTimer_start(1);
simonControl_tick();
intervalTimer_stop(1);
intervalTimer_getTotalDurationInSeconds(1,seconds);
printf("%f \r\n",*seconds);
//printf("interrupt count: %lu \r\n", interrupts_isrInvocationCount());
intervalTimer_reset(1);
interrupts_isrFlagGlobal = 0;
}
}
interrupts_disableArmInts();
printf("isr invocation count: %ld\n\r", interrupts_isrInvocationCount());
printf("internal interrupt count: %ld\n\r", personalInterruptCount);
return 0;
}
