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zephyr/boards/shields/mcp2515/doc/index.rst

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.. _mcp2515_shield:
Microchip MCP2515 CAN bus shields
#################################
Zephyr supports a couple of different shields carrying the Microchip `MCP2515`_
Stand-Alone CAN Controller with SPI Interface.
DFRobot CAN BUS Shield V2.0
***************************
Overview
--------
The DFRobot CAN BUS shield supports the Microchip MCP2515 stand-alone CAN
controller and JTA1050 high speed CAN transceiver. The shield has an Arduino
Uno R3 compatible hardware interface.
.. figure:: ./dfrobot_can_bus_v2_0.jpg
:width: 720px
:align: center
:alt: DFRobot_CAN_BUS_V2_0_SHIELD
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:
- `DFRobot Website`_
- `DFRobot CAN BUS Shield V2.0 schematic`_
- `MCP2515 Datasheet`_
- `TJA1050 Datasheet`_
Keyestudio CAN-BUS Shield (KS0411)
**********************************
Overview
--------
The Keyestudio CAN BUS shield supports the Microchip MCP2515 stand-alone CAN
controller and MCP2551 high speed CAN transceiver. The shield has an Arduino
Uno R3 compatible hardware interface.
.. figure:: ./keyestudio_can_bus_ks0411.png
:width: 559px
:align: center
:alt: Keyestudio CAN-BUS Shield (KS0411)
Keyestudio CAN-BUS Shield (KS0411) (Credit: Keyestudio)
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)
- MCP2551
- Fully compatible with the “ISO 11898” standard
- High speed (up to 1 Mbaud)
- Connectivity
- Industrial standard DB9 terminal (CAN)
- Pin headers (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 | None | |
+-------+-----------------------+---------------------------+
| D3 | None | |
+-------+-----------------------+---------------------------+
| D4 | None | |
+-------+-----------------------+---------------------------+
| D5 | None | |
+-------+-----------------------+---------------------------+
| D6 | None | |
+-------+-----------------------+---------------------------+
| D7 | None | |
+-------+-----------------------+---------------------------+
| D8 | GPIO_ACTIVE_LOW | MCP2515 - INT |
+-------+-----------------------+---------------------------+
| D9 | SPI-CS | MicroSD |
+-------+-----------------------+---------------------------+
| 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
- 5.0VDC
For more information about the Keyestudio CAN-BUS shield:
- `Keyestudio Website`_
- `Keyestudio Wiki`_
- `MCP2515 Datasheet`_
- `MCP2551 Datasheet`_
Programming
***********
Set ``-DSHIELD=dfrobot_can_bus_v2_0`` or ``-DSHIELD=keyestudio_can_bus_ks0411``
when you invoke ``west build`` or ``cmake`` in your Zephyr application. For
example:
.. zephyr-app-commands::
:zephyr-app: samples/drivers/can
:tool: all
:board: nrf52dk_nrf52832
:shield: dfrobot_can_bus_v2_0
:goals: build flash
.. zephyr-app-commands::
:zephyr-app: samples/drivers/can
:tool: all
:board: nrf52840dk_nrf52840
:shield: keyestudio_can_bus_ks0411
:goals: build flash
.. _DFRobot Website:
https://www.dfrobot.com/product-1444.html
.. _DFRobot CAN BUS Shield V2.0 schematic:
https://github.com/DFRobot/CAN_BUS/blob/master/DFR0370%20CAN%20BUS%20sheild(V2.0).pdf
.. _MCP2515:
https://www.microchip.com/en-us/product/MCP2515
.. _Keyestudio Website:
https://www.keyestudio.com/products/2019new-keyestudio-can-bus-shield-mcp2551-chip-with-sd-socket-for-arduino-uno-r3
.. _Keyestudio Wiki:
https://wiki.keyestudio.com/KS0411_keyestudio_CAN-BUS_Shield
.. _MCP2515 Datasheet:
http://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Stand-Alone-CAN-Controller-with-SPI-20001801J.pdf
.. _TJA1050 Datasheet:
https://www.nxp.com/docs/en/data-sheet/TJA1050.pdf
.. _MCP2551 Datasheet:
https://ww1.microchip.com/downloads/en/DeviceDoc/20001667G.pdf
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