Raspberry Pi Zero 2W with FGH100M

Software
6

Hi @alex ,

I have a working setup with the same configuration as you are, Raspberry Pi Zero 2W with Seeed Studio’s Xiao Halow module. I can achieve up-to 10Mbps between 2 RPi.
I wire my RPi as shown below:

Raspberry_Pi_Zero_2W_with_Xiao_Halow
Raspberry_Pi_Zero_2W_with_Xiao_Halow1920×1080 784 KB

Some difference I have with you setup are:

  • The DTS I use is exactly the same as the one in the AppNote
  • Modify the morse driver with the chip reset changes that’s mentioned here
  • I do not bridge the BUSY and WAKE-UP pin. So the module is ON all the time.
  • I load the morse driver with 20MHz SPI Speed
insmod morse.ko bcf=bcf_fgh100mhaamd.bin spi_clock_speed=20000000 country=US

I could never use 50MHz SPI speed using the current wiring, the SPI comm always fail. You can also pass debug_mask=1 when loading the driver to enable debug messages.