Solved
zephyr GPIO irq config
Hi,
In the GPIO interrupt configuration, the port information is ignored and only the pin number is used for identification. As a result, pins with the same pin number on different ports cannot be enabled as interrupt sources at the same time.
stm32_gpio_irq_line_t stm32_gpio_intc_get_pin_irq_line(uint32_t port, gpio_pin_t pin)
{
ARG_UNUSED(port);
return linenum_to_ll_exti_line(pin);
}
int stm32_gpio_intc_set_irq_callback(stm32_gpio_irq_line_t line, stm32_gpio_irq_cb_t cb, void *user)
{
const struct device *const dev = DEVICE_DT_GET(EXTI_NODE);
struct stm32_exti_data *data = dev->data;
uint32_t line_num = ll_exti_line_to_linenum(line);
if ((data->cb[line_num].cb == cb) && (data->cb[line_num].data == user)) {
return 0;
}
/* if callback already exists/maybe-running return busy */
if (data->cb[line_num].cb != NULL) {
return -EBUSY;
}
...
return 0;
}
static int gpio_stm32_pin_interrupt_configure(const struct device *dev,
gpio_pin_t pin,
enum gpio_int_mode mode,
enum gpio_int_trig trig)
{
...
const stm32_gpio_irq_line_t irq_line = stm32_gpio_intc_get_pin_irq_line(cfg->port, pin);
... if (stm32_gpio_intc_set_irq_callback(irq_line, gpio_stm32_isr, data) != 0) {
err = -EBUSY;
goto exit;
}
...exit:
return err;
}
