RAK3172 and Radiolib

LPWAN Modules / EVBs
1

Hi,

We try to port our software also on the RAK3172. Our software use RadioLib (RadioLib: RadioLib Documentation).
I have some problem configuring the RAK3172.

About the rfswitch_table , I set it like this :

static const uint32_t rfswitch_pins[] = {PB8, PC13, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};|

static const Module::RfSwitchMode_t rfswitch_table[] = {

  • {STM32WLx::MODE_IDLE, {LOW, LOW}},*
  • {STM32WLx::MODE_RX, {HIGH, LOW}},*
  • {STM32WLx::MODE_TX_HP, {LOW, HIGH}},*
  • END_OF_MODE_TABLE,*
    };|

Is it correct ?

About the radio.setTCXO( );

How can it be configured ? I notice that there is 3 different configurations (without TCXO, +/- 2.5ppm and +/-0.5ppm ). Is there a specific setting for each ?

Many thanks for your help

Greg

2

Hi @meg068 ,

Settings of RF switch is correct. Also the usage of PB8 and PC13 is fine.

For TCXO variants, the pin is PB0 and we set the voltage to 3.0v.

1 Like
3

Hi,

Many thanks for your answer.

As I understand, I can set radio.setTCXO( 3.0 ); ?
But I do not understand how to set the PB0 according to the variants… ??

Thank you for your help.

4

You can ignore the TCXO variants since the difference they have is the ppm rating. The voltage and IO used is the same.