RS-485 CAN HAT Rock won’t boot
#1
I need to talk to an RS-485 buss

I purchased a RS485 CAN HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH,Allow Long-Distance Communication via RS485/CAN Function Onboard CAN Controller MCP2515 via SPI Interface Transceiver SN65HVD230

https://www.waveshare.com/wiki/RS485_CAN_HAT

When I install the header my rock won’t boot 

Armbian 20.08.17 Buster with Linux 4.4.213-rockchip64

Any ideas?
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#2
Did you managed to get your HAT working?

I have a similar issue with a dAISy HAT which comunicates through the serial pins with the board, as soon as the HAT is on, the Rock64 won't boot.
Which is similar in behavior as described in the pinned Rock64 Boot-up Bug with Serial Console Cable thread.

Luckily for me the HAT needs only 3.3V and Rx/Tx so I may have to use a cheap USB to serial adapter to get my HAT working with the Rock64.

It's a shame that we can't use a HAT made for RaspberryPi and plug it straight onto a Rock64 and expect it to work. Confused
  Reply


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