Module – COMMU Module Extend RS485/TTL CAN/I2C Port

 



Description

COMMU is a Muti-Communication-Interface-Converter. Integrated with 2IIC, 1TTL, 1CAN, 1RS485. Apparently COMMU has packed with most of series communications.

Default connection: TTL – UART0, RS485 – UART2. Since ESP32 pin map is allowed for re-assign, you can re-assign or re-mapping the TTL or RS485 interface to other pins.

Feature

  • 2x I2C Interface
  • 1x CAN Interface
  • 1x RS485 Interface
  • 1x TTL Interface
  • CAN controller: MCP2515-1/SO
  • RS485 Transceiver: SP3485EN-L/TR

Source PinMap

PinMap

CAN ESP32 Chip
CAN_CS GPIO12
CAN_INT GPIO15
CAN_SCK GPIO18
CAN_MISO GPIO19
CAN_MOSI GPIO23
I2C Interface ESP32 Chip
IIC_SDA GPIO21
IIC_SCL GPIO22

Include

  • 1x M5Stack COMMU Module

 

Datasheet