Clock config of the MESH sdk

[mansfield]

Hi,

I am testing the light_switch demo of the nrf5_SDK_for_Mesh_v0.10.1-Alpha_src.

I don't have 32kHz osc on my server board, so I have to change the clk config. I config the clock like this:

config_params.lf_clk_cfg.source = NRF_CLOCK_LF_SRC_RC;

config_params.lf_clk_cfg.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM;

But the program  fail at the sd_softdevice_enable() function. I think it is because of the clk config. So how should I config the clk if I don't have the LF CLK on my board, please?

[mansfield]

It seems that the problem is not sd_softdevice_enable(). I debug the program step by step and find it sleep for ever at nrf_mesh_prov_generate_keys() in setup_provisionee(). The code I chaged is just led and clock:

main.c

[David Edwin]

You may have hit a softdevice assert when debugging and have fallen into the assert handler. Can you verify this ?

[David Edwin]

I got an nRF51-DK (256K Flash and 32K RAM) board and removed the 32KHz LF crystal to simulate your board. I made the changes for the LF clock source in the mesh_core_setup(), I was able to get the light switch client running and it responds correctly to button presses.

#elif SD_BLE_API_VERSION >= 2
nrf_clock_lf_cfg_t lfc_cfg = {NRF_CLOCK_LF_SRC_RC, 32, 2, NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM};