DFRobot CAN BUS Shield V2.0¶
Overview¶
The DFRobot CAN BUS shield supports the Microship MCP2515 stand-alone CAN controller and JTA1050 high speed CAN transceiver. The shield has an Arduino Uno R3 compatible hardware interface.
Hardware¶
MCP2515
Stand-Alone CAN 2.0B Controller
Up to 1Mb/s baud rate
Standard and extended data and remote frames
3x Tx Buffers
2x Rx Buffers
6x 29-bit Filters
2x 29-bit Masks
Interrupt output
One shot mode
High speed SPI interface (10 MHz)
TJA1050
Fully compatible with the “ISO 11898” standard
High speed (up to 1 Mbaud)
Connectivity
Industrial standard DB9 terminal (CAN)
Screw terminals (CAN)
Integrated MicroSD socket for data storage (SPI)
Arduino Uno R3 compatible (SPI)
Name |
Function |
Usage |
|---|---|---|
A0 |
None |
|
A1 |
None |
|
A2 |
None |
|
A3 |
None |
|
A4 |
None |
|
A5 |
None |
|
D0 |
RX |
Ext. header only |
D1 |
TX |
Ext. header only |
D2 |
GPIO_ACTIVE_LOW |
MCP2515 - INT |
D3 |
None |
|
D4 |
SPI-CS |
MicroSD |
D5 |
None |
|
D6 |
None |
|
D7 |
None |
|
D8 |
None |
|
D9 |
None |
|
D10 |
SPI-CS |
MCP2515 |
D11 |
SPI-MOSI |
MCP2515 / MicroSD |
D12 |
SPI-MISO |
MCP2515 / MicroSD |
D13 |
SPI-CLK |
MCP2515 / MicroSD |
D14 |
I2C-SDA |
Ext. header only |
D15 |
I2C_SCL |
Ext. header only |
Power Supply
3.3V ~ 5V
Components
Power switch
Power LED
RX0BF LED
RX1BF LED
For more information about the DFRobot CAN-BUS V2.0 shield:
Programming¶
Set -DSHIELD=dfrobot_can_bus_v2_0 when you invoke west build or cmake in your
Zephyr application. For example:
Using west:
# From the root of the zephyr repository
west build -b nrf52dk_nrf52832 samples/drivers/can -- -DSHIELD=dfrobot_can_bus_v2_0
west flash
Using CMake and ninja:
# From the root of the zephyr repository
# Use cmake to configure a Ninja-based buildsystem:
cmake -B build -GNinja -DBOARD=nrf52dk_nrf52832 -DSHIELD=dfrobot_can_bus_v2_0 samples/drivers/can
# Now run ninja on the generated build system:
ninja -C build
ninja -C build flash