/*******************************************************************************
* Function Name: Timer_Interrupt
********************************************************************************
*
* Summary:
* Handles the Interrupt Service Routine for the WDT timer.
* It is called from common WDT ISR located in BLE component.
*
*******************************************************************************/
void Timer_Interrupt(void)
{
if(CySysWdtGetInterruptSource() & WDT_INTERRUPT_SOURCE)
{
static uint8 led = LED_OFF;
/* Blink LED to indicate that device advertises */
if(CYBLE_STATE_ADVERTISING == CyBle_GetState())
{
led ^= LED_OFF;
Advertising_LED_Write(led);
}
/* Indicate that timer is raised to the main loop */
mainTimer++;
/* Clears interrupt request */
CySysWdtClearInterrupt(WDT_INTERRUPT_SOURCE);
}
}
/*****************************************************************************
* Function Name: _Watchdog_Handler()
******************************************************************************
* Summary:
* Watchdog interrupt routine.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Note:
*
*****************************************************************************/
void _Watchdog_Handler(void)
{
// If the Interrupt source is Counter 0 match, then process.
if(CySysWdtGetInterruptSource() & CY_SYS_WDT_COUNTER0_INT)
{
// Clear Watchdog Interrupt from Counter 0.
CySysWdtClearInterrupt(CY_SYS_WDT_COUNTER0_INT);
/********************************************************************/
/********************************************************************/
// Unlock the WDT registers for modification.
CySysWdtUnlock();
// Disable Counter 0 to allow modifications.
CySysWdtDisable(CY_SYS_WDT_COUNTER0_MASK);
// Reset Counter 0 and give ~3 LFCLK cycles to take effect.
CySysWdtResetCounters(CY_SYS_WDT_COUNTER0_RESET);
CyDelayUs(WATCHDOG_REG_UPDATE_WAIT_TIME);
// Write the Counter 0 match value for 20 millisecond and give
// ~3 LFCLK cycles to take effect.
CySysWdtWriteMatch(CY_SYS_WDT_COUNTER0, WATCHDOG_COUNTER0_PERIOD);
CyDelayUs(WATCHDOG_REG_UPDATE_WAIT_TIME);
// Enable Watchdog Counter 0.
CySysWdtEnable(CY_SYS_WDT_COUNTER0_MASK);
// Lock Watchdog to prevent any further change.
CySysWdtLock();
}
// If the Interrupt source is Counter 1 match, then process.
else if(CySysWdtGetInterruptSource() & CY_SYS_WDT_COUNTER1_INT)
{
// Clear Watchdog Interrupt from Counter 0.
CySysWdtClearInterrupt(CY_SYS_WDT_COUNTER1_INT);
/********************************************************************/
// Stores the previous state of the BLE module.
static uint8 previousState = 0xFF;
// If in advertising mode, flash the LED.
if(CyBle_GetState() == CYBLE_STATE_ADVERTISING) {
previousState = CYBLE_STATE_ADVERTISING;
if(_LED_Green_On)
_LED_TurnOffLED(TRUE);
else
_LED_TurnOnLED(TRUE);
}
// If state changed, turn all the LEDs off.
if (CyBle_GetState() != previousState)
_LED_TurnOffLED(TRUE);
// If disconnected, turn all the LEDs off.
else if(CyBle_GetState() == CYBLE_STATE_DISCONNECTED) {
previousState = CYBLE_STATE_DISCONNECTED;
_LED_TurnOffLED(TRUE);
}
// If connected, turn the LED on.
else if(CyBle_GetState() == CYBLE_STATE_CONNECTED) {
previousState = CYBLE_STATE_CONNECTED;
_LED_TurnOffLED(FALSE);
_LED_TurnOnLED(TRUE);
}
/********************************************************************/
// Unlock the WDT registers for modification.
CySysWdtUnlock();
// Disable Counter 1 to allow modifications.
CySysWdtDisable(CY_SYS_WDT_COUNTER1_MASK);
// Reset Counter 1 and give ~3 LFCLK cycles to take effect.
CySysWdtResetCounters(CY_SYS_WDT_COUNTER1_RESET);
CyDelayUs(WATCHDOG_REG_UPDATE_WAIT_TIME);
// Write the Counter 1 match value for 500 millisecond and give
// ~3 LFCLK cycles to take effect.
CySysWdtWriteMatch(CY_SYS_WDT_COUNTER1, WATCHDOG_COUNTER1_PERIOD);
CyDelayUs(WATCHDOG_REG_UPDATE_WAIT_TIME);
// Enable Watchdog Counter 1.
CySysWdtEnable(CY_SYS_WDT_COUNTER1_MASK);
// Lock Watchdog to prevent any further change.
CySysWdtLock();
}
}
