NCV7329 ESP32 LIN bus master example code

Soldered_Bot · February 24, 2026, 6:24pm

Customer:

I just received the Lin-bus slave and master card and I’m looking for example code for an ESP32 acting as a master on the LIN bus.

Originally submitted via email support on 24 February 2026. Migrated to the forum for community visibility.

Soldered_Bot · February 25, 2026, 10:18am

Soldered Support:

For ESP32 LIN bus communication, you’ll need an external library since LIN libraries are platform-specific. Use this library:

Here is the example:

github.com/mestrode/Lin-Interface-Library

example/basic/src/main.cpp

main


      
          #include <Arduino.h>
          #include <LinFrameTransfer.hpp>
          #include <optional>
          #include <vector>
          
          // using UART 2 for LinBus, UART 1 for debug messages
          LinFrameTransfer LinBus(Serial2, Serial1);
          
          // data to be filled by bus request
          float Cap_Max = 0.0;
          float Cap_Available = 0.0;
          uint8_t Cap_Configured = 0;
          uint8_t CalibByte = 0x00;

This example is compatible with PlatformIO. If you’re using Arduino or only esp-idf, let me know and I can help find a compatible alternative.

Make sure to add a power supply to VCC at the operating voltage of your LIN bus.

Attachment omitted in migration: image.png