Hi,
I am trying to build out a button pressing scheme for BSP on a custom device with 15 buttons operating on a BL652 Laird Module (underlying nRF52832). After modifying the BOARD_PCA10040.h file to a custom one with our buttons (15) and leds (2), I've been able to get the LED initialization working provided I have defined my BUTTONS_NUMBER to 11 or less (not sure why). The LED indications change based on connecting and disconnecting to the BLE device, so that part works. However, when I increase the 'GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS' to 15 in the sdk_config.h file for our 15 buttons I get a hard fault.
// <e> GPIOTE_ENABLED - nrf_drv_gpiote - GPIOTE peripheral driver - legacy layer //========================================================== #ifndef GPIOTE_ENABLED #define GPIOTE_ENABLED 1 #endif // <o> GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS - Number of lower power input pins #ifndef GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS #define GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS 15 #endif
I've traced the hard fault through the following areas of code and found that the fault is due to a pin (I think P0.14) being used twice (one for my button and one for something else 'maybe TRACE').
1. First - buttons_led_init (found in main.c)
static void buttons_leds_init(bool * p_erase_bonds)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
2. Second - bsp_init (found in bsp.c)
uint32_t bsp_init(uint32_t type, bsp_event_callback_t callback)
{
uint32_t err_code = NRF_SUCCESS;
#if LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
m_indication_type = type;
#endif // LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
#if (BUTTONS_NUMBER > 0) && !(defined BSP_SIMPLE)
m_registered_callback = callback;
// BSP will support buttons and generate events
if (type & BSP_INIT_BUTTONS)
{
uint32_t num;
for (num = 0; ((num < BUTTONS_NUMBER) && (err_code == NRF_SUCCESS)); num++)
{
err_code = bsp_event_to_button_action_assign(num, BSP_BUTTON_ACTION_PUSH, BSP_EVENT_DEFAULT);
}
if (err_code == NRF_SUCCESS)
{
err_code = app_button_init((app_button_cfg_t *)app_buttons,
BUTTONS_NUMBER,
APP_TIMER_TICKS(50));
}
if (err_code == NRF_SUCCESS)
{
err_code = app_button_enable();
}
if (err_code == NRF_SUCCESS)
{
err_code = app_timer_create(&m_bsp_button_tmr,
APP_TIMER_MODE_SINGLE_SHOT,
button_timer_handler);
}
}
#elif (BUTTONS_NUMBER > 0) && (defined BSP_SIMPLE)
bsp_board_init(type);
#endif // (BUTTONS_NUMBER > 0) && !(defined BSP_SIMPLE)
#if LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
if (type & BSP_INIT_LEDS)
{
//handle LEDs only. Buttons are already handled.
bsp_board_init(BSP_INIT_LEDS);
// timers module must be already initialized!
if (err_code == NRF_SUCCESS)
{
err_code =
app_timer_create(&m_bsp_leds_tmr, APP_TIMER_MODE_SINGLE_SHOT, leds_timer_handler);
}
if (err_code == NRF_SUCCESS)
{
err_code =
app_timer_create(&m_bsp_alert_tmr, APP_TIMER_MODE_REPEATED, alert_timer_handler);
}
}
#endif // LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
return err_code;
}
3. Third - app_button_init (found in app_button.c)
uint32_t app_button_init(app_button_cfg_t const * p_buttons,
uint8_t button_count,
uint32_t detection_delay)
{
uint32_t err_code;
if (detection_delay < APP_TIMER_MIN_TIMEOUT_TICKS)
{
return NRF_ERROR_INVALID_PARAM;
}
if (!nrf_drv_gpiote_is_init())
{
err_code = nrf_drv_gpiote_init();
VERIFY_SUCCESS(err_code);
}
// Save configuration.
mp_buttons = p_buttons;
m_button_count = button_count;
m_detection_delay = detection_delay;
m_pin_state = 0;
m_pin_transition = 0;
while (button_count--)
{
app_button_cfg_t const * p_btn = &p_buttons[button_count];
#if defined(BUTTON_HIGH_ACCURACY_ENABLED) && (BUTTON_HIGH_ACCURACY_ENABLED == 1)
nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(p_btn->hi_accuracy);
#else
nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(false);
#endif
config.pull = p_btn->pull_cfg;
err_code = nrf_drv_gpiote_in_init(p_btn->pin_no, &config, gpiote_event_handler);
VERIFY_SUCCESS(err_code);
}
// Create polling timer.
return app_timer_create(&m_detection_delay_timer_id,
APP_TIMER_MODE_SINGLE_SHOT,
detection_delay_timeout_handler);
}
4. Finally (Fault Here) - nrfx_gpiote_in_init (found in nrfx_gpiote.c)
nrfx_err_t nrfx_gpiote_in_init(nrfx_gpiote_pin_t pin,
nrfx_gpiote_in_config_t const * p_config,
nrfx_gpiote_evt_handler_t evt_handler)
{
NRFX_ASSERT(pin < NUMBER_OF_PINS);
nrfx_err_t err_code = NRFX_SUCCESS;
/* Only one GPIOTE channel can be assigned to one physical pin. */
if (pin_in_use_by_gpiote(pin))
{
err_code = NRFX_ERROR_INVALID_STATE;
}
else
{
int8_t channel = channel_port_alloc(pin, evt_handler, p_config->hi_accuracy);
if (channel != NO_CHANNELS)
{
if (!p_config->skip_gpio_setup)
{
if (p_config->is_watcher)
{
nrf_gpio_cfg_watcher(pin);
}
else
{
nrf_gpio_cfg_input(pin, p_config->pull);
}
pin_configured_set(pin);
}
if (p_config->hi_accuracy)
{
nrf_gpiote_event_configure((uint32_t)channel, pin, p_config->sense);
}
else
{
m_cb.port_handlers_pins[channel -
GPIOTE_CH_NUM] |= (p_config->sense) << SENSE_FIELD_POS;
}
}
else
{
err_code = NRFX_ERROR_NO_MEM;
}
}
NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
Specifically the fault happens in the following with the following images showing the local variables, etc. information.
/* Only one GPIOTE channel can be assigned to one physical pin. */
if (pin_in_use_by_gpiote(pin))
{
err_code = NRFX_ERROR_INVALID_STATE;
}
I've changed my clock configuration to the following for use in a BL652 and verified that I am not attempting to use high accuracy interrupts as described in the following link.
// </h> //========================================================== // <h> Clock - SoftDevice clock configuration //========================================================== // <o> NRF_SDH_CLOCK_LF_SRC - SoftDevice clock source. // <0=> NRF_CLOCK_LF_SRC_RC // <1=> NRF_CLOCK_LF_SRC_XTAL // <2=> NRF_CLOCK_LF_SRC_SYNTH #ifndef NRF_SDH_CLOCK_LF_SRC #define NRF_SDH_CLOCK_LF_SRC 0 #endif // <o> NRF_SDH_CLOCK_LF_RC_CTIV - SoftDevice calibration timer interval. #ifndef NRF_SDH_CLOCK_LF_RC_CTIV #define NRF_SDH_CLOCK_LF_RC_CTIV 16 #endif // <o> NRF_SDH_CLOCK_LF_RC_TEMP_CTIV - SoftDevice calibration timer interval under constant temperature. // <i> How often (in number of calibration intervals) the RC oscillator shall be calibrated // <i> if the temperature has not changed. #ifndef NRF_SDH_CLOCK_LF_RC_TEMP_CTIV #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2 #endif // <o> NRF_SDH_CLOCK_LF_ACCURACY - External clock accuracy used in the LL to compute timing. // <0=> NRF_CLOCK_LF_ACCURACY_250_PPM // <1=> NRF_CLOCK_LF_ACCURACY_500_PPM // <2=> NRF_CLOCK_LF_ACCURACY_150_PPM // <3=> NRF_CLOCK_LF_ACCURACY_100_PPM // <4=> NRF_CLOCK_LF_ACCURACY_75_PPM // <5=> NRF_CLOCK_LF_ACCURACY_50_PPM // <6=> NRF_CLOCK_LF_ACCURACY_30_PPM // <7=> NRF_CLOCK_LF_ACCURACY_20_PPM // <8=> NRF_CLOCK_LF_ACCURACY_10_PPM // <9=> NRF_CLOCK_LF_ACCURACY_5_PPM // <10=> NRF_CLOCK_LF_ACCURACY_2_PPM // <11=> NRF_CLOCK_LF_ACCURACY_1_PPM #ifndef NRF_SDH_CLOCK_LF_ACCURACY #define NRF_SDH_CLOCK_LF_ACCURACY 7 #endif
https://devzone.nordicsemi.com/f/nordic-q-a/35205/setting-xl1-xl2-as-gpio-does-not-work
What am I missing? Is there some other setting for P0.14 (likely in a TRACEDATA setting)? Is there some other sdk_config.h settings, or other build settings that need to be setup?
Thanks for the help!
