how to enable GPIO+SPI mode on ble application

[nk]

Hi,

I am using NCS v2.4.2 and nRF5340DK + nRF21540EK but I can not enable GPIO+SPI mode.

for example, I use nrf/samples/bluetooth/central_and_peripheral_hr application.

I built the following.

west build -p -b nrf5340dk_nrf5340_cpuapp -d build-ble-hrs nrf/samples/bluetooth/central_and_peripheral_hr -- \
-DSHIELD=nrf21540_ek_fwd -Dhci_rpmsg_SHIELD=nrf21540_ek

I checked netcpu config but GPIO+SPI mode was not enabled. I did not modify NCS code.

what should I do?

 

also, I tried to add child/hci_rpmsg.conf and add the folloing in the conf file.

CONFIG_MPSL_FEM_NRF21540_GPIO_SPI=y

I could enable GPIO+SPI mode by the conf file but the following error output.

It seems netcpu side is crushed. Please help me.

[Naeem Maroof]

Hi,

Yes that is the correct way to set configs for the cpunet.

I can see that CONFIG_MPSL_FEM_NRF21540_GPIO_SPI gets set correctly for using the FEM module, but the application crashes in the HCI driver. I will discuss with Bluetooth experts.

[nk]

I found to avoid the crash by increasing CONFIG_MAIN_STACK_SIZE but it seems we could NOT control MODE by SPI. please investigate.

[Susheel Nuguru]

[deleted]

[nk]

1. please let me know your using ncs version. I am using ncs v2.4.1.
2. please comfirm whether 10dbm and 20dgm are controled by 
   BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL command.
    

[Susheel Nuguru]

Hi Sorry, I had to delete my previous reply as it was wrong.

You need to still use this below

west build -b nrf5340dk_nrf5340_cpuapp -- -DSHIELD=nrf21540ek_fwd -Dhci_ipc_SHIELD=nrf21540ek