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Make gpio interrupts faster by offloading expected state check to user

pull/6315/head
amq 2018-03-09 16:10:10 +01:00
parent f67fe4a7a3
commit 82ecf7e81a
1 changed files with 2 additions and 6 deletions
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8
targets/TARGET_Silicon_Labs/TARGET_EFM32/gpio_irq_api.c
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@ -61,15 +61,11 @@ static void handle_interrupt_in(uint8_t pin)
return;
}
//we are storing two ports in each uint8, so we must aquire the one we want.
// If pin is odd, the port is encoded in the 4 most significant bits. If pin is even, the port is encoded in the 4 least significant bits
uint8_t isRise = GPIO_PinInGet((pin & 0x1) ? channel_ports[(pin>>1) & 0x7] >> 4 & 0xF : channel_ports[(pin>>1) & 0x7] & 0xF, pin);
// Get trigger event
gpio_irq_event event = IRQ_NONE;
if ((GPIO->EXTIFALL & (1 << pin)) && !isRise) {
if (GPIO->EXTIFALL & (1 << pin)) {
event = IRQ_FALL;
} else if ((GPIO->EXTIRISE & (1 << pin)) && isRise) {
} else if (GPIO->EXTIRISE & (1 << pin)) {
event = IRQ_RISE;
}
GPIO_IntClear(pin);