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cpu/sam0_common: GPIO: use bitarithm_test_and_clear()

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This commit is contained in:
Benjamin Valentin 2020-07-19 23:03:27 +02:00
parent 403b6b15c6
commit cc2a3c9fd3
1 changed files with 3 additions and 2 deletions
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5
cpu/sam0_common/periph/gpio.c
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@ -25,6 +25,7 @@
*/ */
#include "cpu.h" #include "cpu.h"
#include "bitarithm.h"
#include "periph/gpio.h" #include "periph/gpio.h"
#include "periph_conf.h" #include "periph_conf.h"
@ -345,9 +346,9 @@ void isr_eic(void)
_EIC->INTFLAG.reg = state; _EIC->INTFLAG.reg = state;
/* execute interrupt callbacks */ /* execute interrupt callbacks */
uint8_t pin = 0;
while (state) { while (state) {
unsigned pin = 8 * sizeof(state) - __builtin_clz(state) - 1; state = bitarithm_test_and_clear(state, &pin);
state &= ~(1 << pin);
gpio_config[pin].cb(gpio_config[pin].arg); gpio_config[pin].cb(gpio_config[pin].arg);
} }