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cpu/stm32/periph: fix typo - or RAM

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krzysztof-cabaj 2024-01-01 13:26:24 +01:00
parent 3326b0cd5b
commit 29502b2dc4
1 changed files with 1 additions and 1 deletions
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cpu/stm32/periph/gpio_ll_irq.c
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@ -316,7 +316,7 @@ void isr_exti(void)
/* emulate level triggered IRQs by asserting the IRQ again in software, if needed */
if (level_triggered & (1UL << pin)) {
/* Trading a couple of CPU cycles to not having to store port connected to EXTI in RAM.
* A simple look up table would save ~6 instructions for the cost 64 byte or RAM. */
* A simple look up table would save ~6 instructions for the cost 64 bytes of RAM. */
gpio_port_t port = GPIO_PORT(get_exti_port(pin));
uint32_t actual_level = gpio_ll_read(port) & (1UL << pin);
uint32_t trigger_level = EXTI_REG_RTSR & (1UL << pin);