// ISR for GPIOF
void GPIOF_Handler(void)
{
if (GetBit32(GPIOF->RIS, 0))
{
if (g_mode == MODE1)
{
// Switch audio range
}
else
{
g_enable_play = 1;
}
SetBit32( &(GPIOF->ICR), 0, 1);
}
else if (GetBit32(GPIOF->RIS, 4))
{
//SetBit32( &(GPIOF->DATA), 3, 1 );
if (!g_enable_play)
{
if (g_mode == MODE1)
{
g_mode = MODE2;
SetBit32( &(GPIOF->DATA), 1, 0 );
SetBit32( &(GPIOF->DATA), 2, 1 );
SetBit32( &(GPIOF->DATA), 3, 0 );
PWM_set_duty_cycle(100);
}
else if (g_mode == MODE2)
{
g_mode = MODE3;
SetBit32( &(GPIOF->DATA), 1, 0 );
SetBit32( &(GPIOF->DATA), 2, 0 );
SetBit32( &(GPIOF->DATA), 3, 1 );
PWM_set_duty_cycle(100);
}
else
{
g_mode = MODE1;
SetBit32( &(GPIOF->DATA), 1, 1 );
SetBit32( &(GPIOF->DATA), 2, 0 );
SetBit32( &(GPIOF->DATA), 3, 0 );
}
}
SetBit32( &(GPIOF->ICR), 4, 1);
}
// Clear pending bit
NVIC->ICPR[0] = 0x1UL << 30;
}
//=====================================================================
// Create the OS Page Table referred to by the above Page Directory
// This does no remapping - each Logical Address is mapped to the same
// Physical Address. This covers Physical Addresses from 0 to 0x200000.
//=====================================================================
void CreatePT164(struct PT * pt, int i)
{
// unsigned char *PMap = (unsigned char *) PageMap;
int count;
pt->entries[0].Hi = 0;
pt->entries[0].Lo = P | RW;
//for (count = 1; count < 0x10; count++)
//{
// pt->entries[count].Hi = 0;
// pt->entries[count].Lo = (count << 12) | P | RW | G;
//}
// Kernel initialized datadata
//for (count = 0x10; count < 0x100; count++)
// if (PMap[count] == 1)
// {
// pt->entries[count].Hi = 0;
// pt->entries[count].Lo = (count << 12) | P | RW | G;
// }
// PageTab
for (count = 0x0 + i * 0x200; count < 0x200 + i * 0x200; count++)
if (GetBit32(count))
{
pt->entries[count].Hi = 0;
pt->entries[count].Lo = (count << 12) | P | RW | G;
}
}
void Timer_delay(uint16_t delayInMilliSeconds)
{
// Calculate the counter reload value
uint32_t timedInterval = delayInMilliSeconds * 0.001 * SYSTEM_CLOCK_FREQUENCY;
uint32_t counterReloadValue = (timedInterval/(PRESCALE_VALUE+1)) - 1;
// Configure counter reload value
TIMER0->TAILR = counterReloadValue;
// Enable TimerA
SetBit32( &(TIMER0->CTL), 0, 1 );
// Loops until timer event has elapsed
while (1)
{
// Check to see if timer event has elapsed
if (GetBit32( TIMER0->CTL, 0 ) == 0)
{
break;
}
}
}
