====== Waveshare Pico CAN ======

[[https://www.waveshare.com/product/pico-can-b.htm]]

[[https://www.waveshare.com/wiki/Pico-CAN-B]]

[[https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Stand-Alone-CAN-Controller-with-SPI-20001801J.pdf]]

[[https://files.waveshare.com/upload/1/13/PICO-CAN-B-sch.pdf]]

  * SPI
  * MCP2515
  * SIT65HVD230DR

CAN V2.0B at 1 Mb/s

  * GP4 MISO
  * GP5 CS0
  * GP6 CLK
  * GP7 MOSI

16 MHz crystal.

NMEA is 250kb/s.