/*
* Wind Speed translation : V = p*(2,25/t)
* V: speed in mph
* p: pulses per sampelperiod
* t: sample period in sec
*/
void setupirq(){
DBG("Initialize Wind Cups...\n");
Chip_GPIOINT_Init(LPC_GPIOINT);
Chip_GPIO_SetPinDIRInput(LPC_GPIO,2,13);
Chip_GPIO_SetPinState(LPC_GPIO, 2, 13, true);
Chip_IOCON_PinMux(LPC_IOCON, 2, 13, IOCON_MODE_PULLUP, IOCON_FUNC0);
const uint32_t prescaleDivisor = 8;
Chip_TIMER_Init(LPC_TIMER2);
Chip_TIMER_PrescaleSet(LPC_TIMER2, prescaleDivisor - 1);
Chip_TIMER_Enable(LPC_TIMER2);
ticksPerSecond = Chip_Clock_GetSystemClockRate() / prescaleDivisor / 4;
Chip_GPIOINT_SetIntFalling(LPC_GPIOINT, GPIOINT_PORT2, (1 << 13));
Chip_GPIOINT_ClearIntStatus(LPC_GPIOINT, GPIOINT_PORT2, (1 << 13));
NVIC_ClearPendingIRQ(EINT3_IRQn);
NVIC_EnableIRQ(EINT3_IRQn);
DBG("Initialize Wind Cups complete...\n");
}
/**
* @brief Handle interrupt from GPIO pin or GPIO pin mapped to PININT
* @return Nothing
*/
void GPIO_IRQ_HANDLER(void)
{
Chip_GPIOINT_ClearIntStatus(LPC_GPIOINT, GPIO_INTERRUPT_PORT, 1 << GPIO_INTERRUPT_PIN);
Board_LED_Toggle(0);
}
