Dear All,
We work on the NRF52 CSP revB. We have a board with two external crystals (32MhZ and 32kHz). When we use the example program with BLE and UART, it works great without any issue !
The issue is the following :
We want to work without 32KhZ Crystal. So we desold the crystal on the breadboard. Then in nrf_drv_config we make the following change
#define CLOCK_CONFIG_LF_SRC NRF_CLOCK_LF_SRC_RC
We add to the project the driver nrf_drv_clock and in the main function, after the start of softdevice, BLE stacks.. we put the following functions
ret_code_t err = nrf_drv_clock_init(p_config); nrf_drv_clock_lfclk_request(); nrf_drv_clock_calibration_force ();
The err is NRF_SUCCESS and nrf_drv_clock_lfclk_is_running() is true !!
But the Bluetooth protocol doesn't work ! I have the feeling that the RC internal Oscillator is not selected ! Can you help us ? How to check that the internal RC Oscillator is choosen ?
Sincerely yours
