error nRF_calendar and app_ble_uart about RTC

[Marcos Tadeo]

HI

I am using nrf52840 and I want to merge nrf_calendar and app_ble_uart example, added ssd1306 oled 128x32 spi and mpu6050 as well,

but the error is from nrf_calendar, in this line... i gess.xd

CAL_RTC->TASKS_START = 1.

because when is executing the program , the process stay in loop in that code part (using debug session)

I am using RTC2 for nrf_calendar,

I have no idea what happening

could you help me please?...

[Jørgen Holmefjord]

Hi,

If you have enabled the softdevice, you need to remove the part that starts the LFCLK. The LFCLK is always running when the softdevice is enabled, so there is no need to start it explicitly in the application. Writing to the NRF_CLOCK registers after softdevice is enabled is restricted, and will possibly cause memory access violation and/or assertions.

Best regards,
Jørgen

[Marcos Tadeo]

hi 

yes, you right,  I removed LFCLK and now it works

thank you Jørgen