Hello, I have some problem about nrf52_sdk_v14.2 bootloader

RE: Hello, I have some problem about nrf52_sdk_v14.2 bootloader

jing — Mon, 25 Jun 2018 10:12:43 GMT

Did you change the LF clock source on both configurations under the nRF Drivers and softdevice clock to 0 (src_rc)?

(CLOCK_CONFIG_LF_SRC and NRF_SDH_CLOCK_LF_SRC)

jing

RE: Hello, I have some problem about nrf52_sdk_v14.2 bootloader

FormerMember — Fri, 15 Jun 2018 07:51:47 GMT

To double check that the LFCLK configurations are set correctly, could you try to manually start the LFCLK in the application:

NRF_CLOCK->TASKS_LFCLKSTART = 1;
while(NRF_CLOCK->EVENTS_LFCLKSTARTED == 0);

RE: Hello, I have some problem about nrf52_sdk_v14.2 bootloader

Alex91 — Thu, 14 Jun 2018 07:20:06 GMT

But I was changed the config of LFCLK

RE: Hello, I have some problem about nrf52_sdk_v14.2 bootloader

FormerMember — Thu, 14 Jun 2018 07:18:46 GMT

All examples in the SDK use by default external crystal as the LFCLK clock source. If your board doesn't have an external 32 kHz crystal, you will need to change the LFCLK clock source to the internal RC oscillator.