Module COMMU
Description
COMMU is a Multi-Communication-Interface-Converter. Integrated with 2*I2C, 1*TTL, 1*CAN, 1*RS485. 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.
Be care about TTL Interface. It is a UART Interface actually by default. But you can switch it to connect with UART2 after changed those jumpers(J6, J7, J9, J10).
When using with the Core2, the base needs to be removed in order to burn the program properly.
Features
- 2x I2C Interface
- 1x CAN Interface
- 1x RS485 Interface
- 1x TTL Interface
- CAN controller: MCP2515-1/SO
- RS485 Transceiver: SP3485EN-L/TR
Include
- 1x M5Stack COMMU Module
Specifications
| Resources | Parameter |
|---|---|
| Interface | I2C x2, CAN x1, RS485 x1, TTL x1 |
| CAN Controller | MCP2515-1/SO |
| RS485 transceiver | SP3485EN-L/TR |
| Net weight | 13.5g |
| Gross weight | 24g |
| Product Size | 54.2*54.2*13mm |
| Package Size | 133*95*16mm |
| Material | Plastic ( PC ) |
EasyLoader
EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification.
Communicate through RS485 and send data.
PinMap
| *MCP2515* | *ESP32 Chip* |
|---|---|
| CAN_CS | GPIO12 |
| CAN_INT | GPIO15 |
| CAN_SCK | GPIO18 |
| CAN_MISO | GPIO19 |
| CAN_MOSI | GPIO23 |
| *I2C Interface* | *ESP32 Chip* |
|---|---|
| I2C_SDA | GPIO21 |
| I2C_SCL | GPIO22 |
MBUS PinMap
Schematic
Related Link
Example
Arduino IDE
If you want the complete code faces_encoder.ino, please click
here
