Hello
I have 2 peripherals on my custom nRF52840 board: accelerometer and a touch button
I configured the gpio callbacks for both parts but see strange behavior: On a button press both button and accelerometer GPIO callbacks trigger. But on the accelerometer event the accelerometer GPIO callback DOES NOT trigger. I am 100% certain that the accelerometer is configured correctly and generates interrupt events.
Details below
Any ideas what is wrong??
Thank you
DTS
custom_pins {
compatible = "gpio-keys";
button1: button_1 {
gpios = <&gpio0 2 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
label = "Touch button";
};
// accelerometer int1
acc_int1: acc_int1 {
gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
};
};
proj.conf
CONFIG_GPIO=y
---------------------------------
// buttton init code
static const struct gpio_dt_spec _btn_map[] = {
GPIO_DT_SPEC_GET_OR(DT_ALIAS(sw1), gpios, {0}),
int btn_init(btn_cb_t cb)
{
int ret;
uint32_t btn_mask = 0;
// Setup common callback. Note the callback struct must not be a local var.
static struct gpio_callback gpio_cb;
for (unsigned i=0; i<NUM_BTNS; ++i) {
ret = gpio_pin_configure_dt(&_btn_map[i], GPIO_INPUT);
if (ret != 0) {
LOG_ERR("Error %d: failed to configure %s pin %d", ret, _btn_map[i].port->name, _btn_map[i].pin);
return -1;
}
btn_mask |= BIT(_btn_map[i].pin);
gpio_init_callback(&gpio_cb, btn_gpio_evt_cb, btn_mask);
gpio_add_callback(_btn_map[i].port, &gpio_cb);
ret = gpio_pin_interrupt_configure_dt(&_btn_map[i], GPIO_INT_EDGE_BOTH);
if (ret != 0) {
LOG_ERR("Error %d: failed to configure interrupt on %s pin %d", ret, _btn_map[i].port->name, _btn_map[i].pin);
return -2;
}
}
LOG_DBG("button config done.");
return 0;
}
Accelerometer INT1 init code
static const struct gpio_dt_spec _int1_dt_spec = GPIO_DT_SPEC_GET_OR(DT_ALIAS(accint1), gpios, {0});
gpio_pin_configure_dt(&_int1_dt_spec, GPIO_INPUT);
gpio_init_callback(&_gpio_int1_cb,gpio_int1_callback, BIT(_int1_dt_spec.pin));
gpio_add_callback(_int1_dt_spec.port, &_gpio_int1_cb);
gpio_pin_interrupt_configure_dt(&_int1_dt_spec,GPIO_INT_LEVEL_ACTIVE);
