nrf_error_invalid_state(error 8) error on nrf52840 custom board, could it be caused by soldering issue?

[hmihmi]

I am building a nrf52840 custom board and testing the ble_app_blink_pca10056_s140 example from segger
I have a 32MHz crystal and a 32.768khz crystal
And I added the following to sdk_config.h
But I am getting nrf_error_invalid_state(error 8) error in ble_stack_init() - sdh_enable_request() - sd_softdevice_enable
Is there something wrong with my setup?
Or is it possible that I soldered the nrf52840 chip wrong and that is causing this problem?

#define NRFX_CLOCK_CONFIG_LF_SRC 2
#define CLOCK_CONFIG_LF_SRC 2
#define NRF_SDH_CLOCK_LF_SRC 2
#define NRF_SDH_CLOCK_LF_RC_CTIV 0
#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 0
#define NRF_SDH_CLOCK_LF_ACCURACY 7

[Jared]

Hi there!

Which nRF5SDK version are you using?

Can you check which function inside ble_stack_init() that returns error 8?

If it's nrf_sdh_enable_request() then it means that the Softdevice has already been initialized before. Check if ble_stack_init() has already been called earlier in your application.

regards

Jared 

[hmihmi]

Thanks for your reply
The ble_stack_init() function has never been called before
The same source runs without any problems on other development boards
The sdk version is nrf_sdk_17.1
Is there a problem with the settings?
Is there any possibility that this problem is caused by soldering?

[Jared]

Hi,

Can you share your code?

regards

Jared

[hmihmi]

The source code is the same as the example in nRF5_SDK_17.1.0_ddde560/examples/ble_peripheral/ble_app_blinky/pca10056/s140/ses. However, since the LED and button parts are different, as shown below, only this part of the code was commented out.

int main(void)

{

// Initialize.

log_init();

// leds_init();

timers_init();

// buttons_init();

power_management_init();

ble_stack_init(); - error occurred

gap_params_init();

gatt_init();

services_init();

advertising_init();

conn_params_init();

// Start execution.

NRF_LOG_INFO("Blinky example started.");

advertising_start();

// Enter main loop.

for (;;)

{

idle_state_handle();

}

}

[Jared]

Hi,

1. If you have external LF and HF crystals, why would you want to use the SYNT source for the LF clock?

2. What is the internal capacitance of your LF and HF crystals? It's specified in the datasheet of the crystals. 

3. What have you placed as the parallel load capacitors for the LF and HF crystals?

regards

Jared