How to change TCXO to Quartz Clock configuration SW LoRa_AT_Slave

[LEdou.1]

Hi,

I would like to try nucleo-WL55 in LoRa Node with Quatz and see temperature influence in RF signal.

So I have unsolder R2, and solder R39/R40. But now LoRaWAN_AT_Slave does not work anymore, even if I change TCXO to Quartz in .ioc file. I can see AT menu, but ATTONE does not work anymore.

• What change did we do to be able to use Quartz insted of TCXO?

• In LoRaWAN_AT_Slave MSI RC is configure. Why when I try to use HSE PRES /4 X12 /2 (48Mhz) I can't be able to see UART ? (AT menu)

[LEdou.1 · Accepted solution]

It was just config of TCXO, it is not enough to change TCXO to crytal in .ioc.

We need to change in "stm32wlxx_nucleo_radio.c" function "int32_t BSP_RADIO_IsTCXO(void)" by "RADIO_CONF_TCXO_NOT_SUPPORTED".

And we can change switch pinout in "stm32wlxx_nucleo_radio.h"