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cpu/lm4f120: GPIO: clear stale interrupt

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This commit is contained in:
Benjamin Valentin 2020-08-13 00:37:22 +02:00
parent add10b5fab
commit 2509c206ee
1 changed files with 4 additions and 0 deletions
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4
cpu/lm4f120/periph/gpio.c
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@ -262,6 +262,10 @@ void gpio_irq_enable(gpio_t pin)
const uint8_t pin_num = _pin_num(pin); const uint8_t pin_num = _pin_num(pin);
const uint8_t pin_bit = 1<<pin_num; const uint8_t pin_bit = 1<<pin_num;
/* clear stale interrupt */
ROM_GPIOPinIntClear(port_addr, pin_bit);
/* enable interrupt */
HWREG(im_reg_addr) |= pin_bit; HWREG(im_reg_addr) |= pin_bit;
} }