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Greetings. Please tell me which transceiver to use? I have a mcp2004a and tja1020. But I can’t figure out how to send a message to the bus.
I would be grateful if you write to send and read messages from the bus.

Greetings my friend. Please tell me, can this be used in stm32? Perhaps you have some experience with stm32?

Trying to build LIN_master_portable/examples/LIN_HardwareSerial_ESP32_Background/LIN_HardwareSerial_ESP32_Background.ino fails with:

In file included from /home/dave/Arduino/libraries/LIN_master_portable/src/LIN_master_SoftwareSerial.cpp:14:
/home/dave/Arduino/libraries/LIN_master_portable/src/LIN_master_SoftwareSerial.h:25:10: fatal error: SoftwareSerial.h: No such file or directory
 #include <SoftwareSerial.h>
          ^~~~~~~~~~~~~~~~~~
compilation terminated.

This is with esp32-arduino 2.0.9 release. I've checked back to the 2.0.0 and 1.0.6 releases and it doesn't appear to work there either. From what I can see SoftwareSerial is not supported by the ESP32 Arduino core due to issues with reliable bit timing due to the FreeRTOS base.

The build problem is possible to work around by removing || defined(ARDUINO_ARCH_ESP32) from the list of supported platforms in the top of LIN_master_portable/src/LIN_master_SoftwareSerial.cpp.