Microchip MCP2515 CAN bus shields - Zephyr

.. _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 :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.jpg :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_

Adafruit PiCowbell CAN Bus Shield for Pico

Overview

The Adafruit PiCowbell CAN Bus Shield uses the Microchip MCP2515 controller with an TJA1051/3 transceiver. This shield is built for the Raspberry Pi Pico and uses the SPI interface. It also contains a Qwiic connector to add support for a sensor.

.. figure:: adafruit_can_picowbell.jpg :align: center :alt: Adafruit PiCowbell CAN Bus Shield

Adafruit PiCowbell CAN Bus 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)

TJA1051

  - Fully compatible with the “ISO 11898-2:2016”, "SAE J2284-1" & "SAE J2284-5"  standards
  - Supports CAN FD
  - Fast data rates (up to 5 Mbit/s)

Connectivity

  - Terminal Block - 3-pin 3.5mm (CAN)
  - Raspberry Pi Pico compatible (SPI)

+-------+-----------------------+---------------------------+ | Name | Function | Usage | +=======+=======================+===========================+ | GP0 | None | | +-------+-----------------------+---------------------------+ | GP1 | None | | +-------+-----------------------+---------------------------+ | GP2 | None | | +-------+-----------------------+---------------------------+ | GP3 | None | | +-------+-----------------------+---------------------------+ | GP4 | None | | +-------+-----------------------+---------------------------+ | GP5 | None | | +-------+-----------------------+---------------------------+ | GP6 | None | | +-------+-----------------------+---------------------------+ | GP7 | None | | +-------+-----------------------+---------------------------+ | GP8 | None | | +-------+-----------------------+---------------------------+ | GP9 | None | | +-------+-----------------------+---------------------------+ | GP10 | None | | +-------+-----------------------+---------------------------+ | GP11 | None | | +-------+-----------------------+---------------------------+ | GP12 | None | | +-------+-----------------------+---------------------------+ | GP13 | None | | +-------+-----------------------+---------------------------+ | GP14 | None | | +-------+-----------------------+---------------------------+ | GP15 | None | | +-------+-----------------------+---------------------------+ | GP16 | SPI-MISO | MCP2515 | +-------+-----------------------+---------------------------+ | GP17 | None | | +-------+-----------------------+---------------------------+ | GP18 | SPI-SCK | MCP2515 | +-------+-----------------------+---------------------------+ | GP19 | SPI-MOSI | MCP2515 | +-------+-----------------------+---------------------------+ | GP20 | SPI-CS | MCP2515 | +-------+-----------------------+---------------------------+ | GP21 | GPIO_ACTIVE_LOW | MCP2515 - INT | +-------+-----------------------+---------------------------+ | GP22 | None | | +-------+-----------------------+---------------------------+ | GP23 | None | | +-------+-----------------------+---------------------------+ | GP24 | None | | +-------+-----------------------+---------------------------+ | GP25 | None | | +-------+-----------------------+---------------------------+ | GP26 | None | | +-------+-----------------------+---------------------------+ | GP27 | None | | +-------+-----------------------+---------------------------+ | GP28 | None | | +-------+-----------------------+---------------------------+

Power Supply
```
  - 3.3V ~ 5V
```

For more information about the Adafruit PiCowbell CAN Bus shield:

Adafruit Website_
MCP2515 Datasheet_
TJA1051 Datasheet_

Seeed Studio XIAO CAN Bus Shield

Overview

The Seeed Studio XIAO CAN Bus Shield is specifically designed to work with Seeed Studio XIAO series_ development boards. It uses the Microchip MCP2515 CAN controller with an SN65HVD230 high speed CAN transceiver. The shield has an Seeed Studio XIAO compatible hardware interface.

.. figure:: seeed_xiao_can.jpg :align: center :alt: Seeed Studio XIAO CAN Bus Shield

Seeed Studio XIAO CAN Bus Shield

Hardware

The Seeed Studio XIAO CAN Bus Shield requires the SPI chip-select and interrupt line on Seeed Studio XIAO header pins that are not standardized for Zephyr. They conflict with the standardized use of the first UART on pin D6 (TX) and D7 (RX). The shield resolves this conflict by disabling the UART.

This means that the Zephyr console can no longer be accessed via the serial interface, an alternative such as the USB CDC/ACM class must be used instead, e.g. with --snippet cdc-acm-console when you invoke west build.

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)

SN65HVD230

  - Fully compatible with the “ISO 11898” standard
  - High speed (up to 1 Mbaud)

Connectivity

  - Screw terminal block - 3-pin 3.5mm (CAN)
  - Solder pad for CAN bus termination
  - Seeed Studio XIAO compatible (SPI)

+-------+-----------------------+---------------------------+ | Name | Function (original) | Usage | +=======+=======================+===========================+ | D0 | None | | +-------+-----------------------+---------------------------+ | D1 | None | | +-------+-----------------------+---------------------------+ | D2 | None | | +-------+-----------------------+---------------------------+ | D3 | None | | +-------+-----------------------+---------------------------+ | D4 | None (I2C-SDA) | | +-------+-----------------------+---------------------------+ | D5 | None (I2C-SCL) | | +-------+-----------------------+---------------------------+ | D6 | GPIO_ACTIVE_LOW (TX) | MCP2515 - INT | +-------+-----------------------+---------------------------+ | D7 | SPI-CS (RX) | MCP2515 | +-------+-----------------------+---------------------------+ | D8 | SPI-CLK | MCP2515 | +-------+-----------------------+---------------------------+ | D9 | SPI-MOSI | MCP2515 | +-------+-----------------------+---------------------------+ | D10 | SPI-MISO | MCP2515 | +-------+-----------------------+---------------------------+

Power Supply
```
  - 3.3V ~ 5V
```

For more information about the Seeed Studio XIAO CAN Bus shield:

Seeed Studio Website_
Seeed Studio Wiki_
MCP2515 Datasheet_
SN65HVD230 Datasheet_

Programming

Set --shield dfrobot_can_bus_v2_0 or --shield keyestudio_can_bus_ks0411 or --shield adafruit_can_picowbell or --shield seeed_xiao_can when you invoke west build or cmake in your Zephyr application. For example:

.. zephyr-app-commands:: :zephyr-app: samples/drivers/can/counter :tool: all :board: nrf52dk/nrf52832 :shield: dfrobot_can_bus_v2_0 :goals: build flash

.. zephyr-app-commands:: :zephyr-app: samples/drivers/can/counter :tool: all :board: nrf52840dk/nrf52840 :shield: keyestudio_can_bus_ks0411 :goals: build flash

.. zephyr-app-commands:: :zephyr-app: samples/drivers/can/counter :tool: all :board: rpi_pico :shield: adafruit_can_picowbell :goals: build

.. zephyr-app-commands:: :zephyr-app: samples/drivers/can/counter :tool: all :board: xiao_rp2040 :shield: seeed_xiao_can :snippets: cdc-acm-console :goals: build

.. _DFRobot Website: https://www.dfrobot.com/product-1444.html

.. _DFRobot CAN BUS Shield V2.0 schematic: https://github.com/DFRobot/DFRobot_MCP2515/blob/master/resources/doc/DFR0370%20CAN%20BUS%20sheild(V2.0).pdf

.. _MCP2515: https://www.microchip.com/en-us/product/MCP2515

.. _Keyestudio Website: https://www.keyestudio.com/2019new-keyestudio-can-bus-shield-mcp2551-chip-with-sd-socket-for-arduino-uno-r3-p0543.html

.. _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

.. _Adafruit Website: https://www.adafruit.com/product/5728#technical-details

.. _TJA1051 Datasheet: https://www.nxp.com/docs/en/data-sheet/TJA1051.pdf

.. _Seeed Studio XIAO series: https://wiki.seeedstudio.com/SeeedStudio_XIAO_Series_Introduction

.. _Seeed Studio Website: https://www.seeedstudio.com/Seeed-Studio-CAN-Bus-Breakout-Board-for-XIAO-and-QT-Py-p-5702.html