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crycode-de / mcp-can-boot

CAN bus bootloader for AVR microcontrollers attached to an MCP2515 CAN controller.
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Bootloader on ATMEGA64M1 #4

Closed alessio31183 closed 2 years ago

alessio31183 commented 2 years ago

I'm wondering if, using a different driver file instead of mcp2515.cpp and mcp2515.h, I can port the project on the ATMEGA64M1.

That's my uC used on all my canBus project.

How can I proceed?

Because I don't see the .hex file for programming

Thanks in advance

crycode-de commented 2 years ago

In general it should be possible to replace all calls to the mcp2515 instance in bootloader.cpp by the commands needed to interact with the buildin CAN controller of the ATmage64M1 and strip out all mcp2515 calls.

Also you have to add the µC in controllers.h with the correct definitions.

Then you should be able to build the .hex file for your µC.

alessio31183 commented 2 years ago

Ok Peter Thanks,

I'll try to substitute drivers for the ATMEGA64M1 in order to fit the bootloader with my uC.

One question: for the remote flash application which kind of CAN interface I can use?

Can I use an Arduino with the can controller shield with the MCP2515 on board?

In case yes, how can I tell it to the flash application?

Thanks

crycode-de commented 2 years ago

Currently the flash application needs a Linux system with a CAN interface supported by the kernel. A lightweight solution is a Raspberry Pi with a MCP2515.

I had some plans to support an Arduino with a MCP2515, but no time to implement it yet.

alessio31183 commented 2 years ago

I use Ubuntu with MCP-CAN-Boot Flash-App installed.

I'm trying to add the kernel support to this usb-to-can converter https://github.com/alexmohr/usb-can.

crycode-de commented 2 years ago

Looks good. If you get the can0 interface working, the flash application should do the job 👍