RS485-Channel

Multi channel RS485 master communication and simple Modbus master aplication layer over RS485. Work with Modbus IO Module:

1. AVR-LPC: https://github.com/SimeonSimeonovIvanov/AVR-LPC

2. HMI with RT1052:
   https://photos.app.goo.gl/7XBgT8anR3BwW6eA8
   https://youtu.be/byI_Xd7OLUo

3. ARM-PLC v.0.0.0: https://photos.app.goo.gl/mvdGAAyFvAadtSrAA (HW); https://photos.app.goo.gl/f3DY63dmGU38Qery5 (FW)
   STM32F446; 14 DI; 1 ENC (2xDI); 16 DO; 4 AI; 2 AO; 1 CAN ( isolated ); 1 RS485 ( isolated ); HMI: LED and SPI expander