Canis Labs CANPico Shield - Zephyr

.. _canis_canpico:

Canis Labs CANPico Shield #########################

Overview

The Canis Labs CANPico shield supports the Microchip MCP2517FD or MCP2518FD stand-alone CAN controller and Microchip MCP2562FD high-speed CAN FD transceiver. The CANPico is a carrier board in a ‘sock’ format for a Raspberry Pi Pico family.

.. figure:: canis_canpico.webp :align: center :alt: Canis_Labs_CANPico_SHIELD

Hardware

MCP2517/2518FD

  - External CAN FD Controller with Serial Peripheral Interface (SPI)
  - Arbitration Bit Rate up to 1 Mbps
  - Data Bit Rate up to 8 Mbps
  - CAN FD Controller modes: CAN 2.0B Mode or Mixed CAN 2.0B and CAN FD Mode
  - Conforms to ISO 11898-1:2015

MCP2562FD

  - Optimized for CAN FD (Flexible Data rate) at 2, 5 and 8 Mbps Operation
  - Maximum Propagation Delay: 120 ns
  - Implements ISO-11898-2 and ISO-11898-5 Standard Physical Layer Requirements
  - Very Low Standby Current (5 µA, typical)
  - VIO Supply Pin to Interface Directly to CAN Controllers and Microcontrollers with 1.8V to 5.5V I/O

Connectivity

  - Jumper header to enable a 120W CAN bus termination resistor
  - Jumper header to enable the CAN TX line to the transceiver
  - Screw terminal connector to CAN bus
  - CAN controller interrupt and Start-of-Frame inputs to GPIO pins
  - Direct access via GPIO pins to the CAN transceiver Tx and Rx pins
  - Test instrument header (for an oscilloscope or logic analyzer)

+-------+-----------------------+---------------------------+ | Name | Function | Usage | +=======+=======================+===========================+ | GP0 | None | | +-------+-----------------------+---------------------------+ | GP1 | None | | +-------+-----------------------+---------------------------+ | GP2 | TRIG | Programmable trigger | +-------+-----------------------+---------------------------+ | GP3 | STBY | Transceiver standby | +-------+-----------------------+---------------------------+ | GP4 | SOF | Clock/SOF | +-------+-----------------------+---------------------------+ | GP5 | IRQ | Transceiver interrupt | +-------+-----------------------+---------------------------+ | GP6 | None | SPI CS | +-------+-----------------------+---------------------------+ | GP7 | None | | +-------+-----------------------+---------------------------+ | GP8 | SPI1_Rx | SPI Rx | +-------+-----------------------+---------------------------+ | GP9 | None | | +-------+-----------------------+---------------------------+ | GP10 | SPI1_SCK | SPI clock | +-------+-----------------------+---------------------------+ | GP11 | SPI1_Tx | SPI Tx | +-------+-----------------------+---------------------------+ | GP12 | None | | +-------+-----------------------+---------------------------+ | GP13 | None | | +-------+-----------------------+---------------------------+ | GP14 | None | | +-------+-----------------------+---------------------------+ | GP15 | None | | +-------+-----------------------+---------------------------+ | GP16 | None | | +-------+-----------------------+---------------------------+ | GP17 | None | | +-------+-----------------------+---------------------------+ | GP18 | None | | +-------+-----------------------+---------------------------+ | GP19 | None | | +-------+-----------------------+---------------------------+ | GP20 | None | | +-------+-----------------------+---------------------------+ | GP21 | Rx | CAN Rx data | +-------+-----------------------+---------------------------+ | GP22 | Tx | CAN Tx data | +-------+-----------------------+---------------------------+ | GP23 | None | | +-------+-----------------------+---------------------------+ | GP24 | None | | +-------+-----------------------+---------------------------+ | GP25 | None | | +-------+-----------------------+---------------------------+ | GP26 | None | | +-------+-----------------------+---------------------------+ | GP27 | None | | +-------+-----------------------+---------------------------+ | GP28 | None | | +-------+-----------------------+---------------------------+

Test header

  - TRIG:  Programmable trigger output
  - Tx:  Logic-level CAN Tx data
  - Rx:  Logic-level CAN Rx data
  - H:  Raw CAN-Hi signal
  - L:  Raw CAN-Low signal

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

Components

  - Tx Enable jumper
  - 120 ohm terminator jumper

For more information about the Canis Labs CANPico shield:

Canis Labs Website_
CANPico CAN Bus Shield_
MCP2517FD Datasheet_
MCP2518FD Datasheet_
MCP2562FD Datasheet_

Programming

Set --shield canis-canpico 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: rpi_pico :shield: canpico :goals: build flash

.. _Canis Labs Website: https://canislabs.com/

.. _CANPico CAN Bus Shield: https://canislabs.com/canpico/

.. _MCP2517FD: https://www.microchip.com/en-us/product/MCP2518FD

.. _MCP2517FD Datasheet: https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/MCP2517FD-External-CAN-FD-Controller-with-SPI-Interface-20005688B.pdf

.. _MCP2518FD: https://www.microchip.com/en-us/product/MCP2518FD

.. _MCP2518FD Datasheet: https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/External-CAN-FD-Controller-with-SPI-Interface-DS20006027B.pdf

.. _MCP2562FD Datasheet: https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005284A.pdf