I have 4 gpio inputs on the nRF52840 working and sending these states over the BLE. I tried to add a few more gpio inputs but I get an error =4 which I think is NRF_ERROR_NO_MEM. I should have several other pins available on the hardware. I cannot see what is going wrong.
I am using the ble_peripheral/ble_app_blinky/main.c example. It is erroring out in app_button.c at:
err_code = nrf_drv_gpiote_in_init(p_btn->pin_no, &config, gpiote_event_handler);
my buttons_init() function is below.
#define NORTH_PIR_BUTTON 4 /**< Button that will trigger the notification event with the LED Button Service */
#define NORTHWEST_PIR_BUTTON 5 /**< Button that will trigger the notification event with the LED Button Service */
#define NORTHEAST_PIR_BUTTON 21 /**< Button that will trigger the notification event with the LED Button Service */
#define EAST_PIR_BUTTON 19 /**< Button that will trigger the notification event with the LED Button Service */
#define WEST_PIR_BUTTON 28 /**< Button that will trigger the notification event with the LED Button Service */
#define SOUTH_PIR_BUTTON 29 /**< Button that will trigger the notification event with the LED Button Service */
#define SOUTHWEST_PIR_BUTTON 30 /**< Button that will trigger the notification event with the LED Button Service */
#define SOUTHEAST_PIR_BUTTON 31 /**< Button that will trigger the notification event with the LED Button Service */
static void buttons_init(void)
{
ret_code_t err_code=0;
// 4 max works
//The array must be static because a pointer to it will be saved in the button handler module.
static app_button_cfg_t buttons[] =
{
{NORTHEAST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}, // error
//{NORTHWEST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}, //error
{LEDBUTTON_BUTTON, false, BUTTON_PULL, button_event_handler}, // works
//{NORTH_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}, // error
//{SOUTH_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}, // error
//{SOUTHEAST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}, // ERROR
{SOUTHWEST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler},// works
{WEST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler},// works
{EAST_PIR_BUTTON, APP_BUTTON_ACTIVE_HIGH, NRF_GPIO_PIN_NOPULL, button_event_handler}// works
};
err_code = app_button_init(buttons, ARRAY_SIZE(buttons),
BUTTON_DETECTION_DELAY); // APP_TIMER_TICKS(100)
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("after button_init error=%ld, NUMBER_OF_PINS=%d", err_code, NUMBER_OF_PINS); // 4, 48
}
