I was planning on writing firmware for the nRF52840 chip (AKA System Controller) on the NRF9160 DK. Primarily it will use BLE and serial communications over some of the pins on the nRF52_IF <=> nRF92_IF signals.
I would like the VCOM ports, LEDs and buttons to continue functioning. Are there any guidelines on this or limitations I may run into?
My assumption is that I can leave the CTRL pins floating or drive them low:
- LED0_CTRL
- LED1_CTRL
- LED2_CTRL
- LED3_CTRL
- SWITCH0_CTRL
- SWITCH1_CTRL
- SWITCH2_CTRL
- SWITCH0_CTRL
- nRF_IF0-2_CTRL
- nRF_IF3-5_CTRL
- nRF_IF6-8_CTRL
Is that correct?
Are there any samples of nRF52 firmware for the nRF9160 DK available?
Thanks.