Infinite loop on line; err = mpsl_init(&clock_cfg, CONFIG_MPSL_LOW_PRIO_IRQN, m_assert_handler); error

[Furkan Ipek]

Hi guys,
With v2.8.0 sdk, L4_e3 code (academy.nordicsemi.com/.../) works with nrf52833dk. We have a custom board that we designed. Here, nrf52820 chip is used. I can compile and flash with nRF52833DK nRF52820 option.

However, while debugging, the code gets stuck below. Where could the problem be?

err = mpsl_init(&clock_cfg, CONFIG_MPSL_LOW_PRIO_IRQN, m_assert_handler);

The .dts and overlay file contents are as follows.

The pin overview is as follows.

Furkan

[longrain]

Check 32.768K xtal.

If not 

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_250PPM=y

[Kazi Afroza Sultana]

Hello,

The MPSL (Multiprotocol Service Layer) has specific timing requirements that can be affected during debugging sessions. Do you have LFCLK on your custom board? If you don't have external crystal, you can set the internal RC in the config file

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y