Hello Olimex, Interested in this board,
https://www.olimex.com/Products/OLinuXino/STMP1/STMP157-OLinuXino-LIME2/open-source-hardwarea
- The chip if I'm not mistaken has 2 x CAN FD on it, are the second CAN controller pins available to connect external transceiver through board's GPIO's blocks, and Linux driver(s) can use second controller? I need to connect own external transceiver(s). If it requires alt function or muxing, what would I loose if I want second CAN, considering the stack thats running on it?
- Could you confirm that both those CAN controllers and driver supports the hardware timestmaping of messages? (i.e., its not the host's own timestamp)
- Could you explain the purpose of this 5v/3v3 switch on CAN transceiver on board, doenst' that module only support 5v CAN?
Is there a box/housing available for the board, similar to how you have for A20 Micro?
- About the jumper, it is there for compatibility reasons. If we decide to put other CAN controller. It makes no sense to change it with the CAN controller that we currently use (since it is 5V only), but we have used controllers in the past that could work at 3.3V and 5V.
- About timestamping - the hardware combo supports timestamping, it comes from the STM32MP157 chip. Can't say if I tested if the software supports it but even if it doesn't it shouldn't be hard to get it working.
- About the box - we don't have a custom box, however, the STMP board fits in the LIME metal box. There is just some free space at the side of the CAN controller (since the STMP board has no HDMI), check the pictures for each side:
(https://i.imgur.com/7Hn1W12.jpeg)
(https://i.imgur.com/YpqlEhv.jpeg)
The box is this one:
https://www.olimex.com/Products/OLinuXino/BOXES/BOX-LIME/
- About the software, I know for sure that in both STMP157 designs the CAN connector is tested empirically so there is CAN support in our Linux image. I can't say if in the OLinuXino board the second CAN is supported by the software (or if it can be enabled by the commands), but you can probably check the Linux configuration for the BASE EVB board (which has two CAN connectors):
https://www.olimex.com/Products/SOM/STMP1/STMP157-BASE-SOM-EVB/open-source-hardware
It is also good idea to take a look at this document about the Olimage Linux:
https://github.com/OLIMEX/olimage