radio.begin() -> state is error on RAK3172 (STM32WLx) without XTCO

[igorsel]

Hello! Please help me - I can't pass the line in the program:
int state = radio.begin(868.95,500.0,7,1,18,22,8,3.3, false);
if (state == RADIOLIB_ERR_NONE) always gives else and then loops..What could it be?
I have a RAK3172 module without XTCO.
The RF switch is configured as follows:
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_LP, {LOW, HIGH}},
{STM32WLx::MODE_TX_HP, {LOW, HIGH}},
END_OF_MODE_TABLE,
};
I don't know what to do next anymore.
Thanks for the help!

[jgromes]

We will gladly try to help, but you need to help us a little bit first. First of all, "gives else" really tells next to nothing about what is happening - what is the value returned by the begin method? And did you try to find out what it means?

Also, you say the device is without TCXO - yet you set the TCXO voltage to 3.3V. So does it have a TCXO or not?

[igorsel]

Good afternoon! Thanks for the quick reply and sorry for my English. I think I figured it out myself. I followed the link - https://forum.rakwireless.com/t/rak11300-now-with-arduino-pico-support-and-radiolib/10922/4 and I found the answer to my question. Thanks again!