AVR CAN flasher
This is a port for the ESP32 of the "MCP-CAN-Boot Flash-App" from Peter Müller. More information about this is available here: https://github.com/crycode-de/mcp-can-boot-flash-app
The bootloader
More information about the bootloader are available in the official repository: https://github.com/crycode-de/mcp-can-boot
Requirements
- ESP32 (Tested on an ESP32 Wrover-B)
- Connected CAN transceiver. (Tested with an MCP2515.)
- Enough free RAM on the ESP32 to load and parse the target hex file.
Usage
Please see the example "flash_hex_via_can.ino" in the example folder. The hex file needs to be stored in the SPIFFS of your ESP32. Please see https://github.com/me-no-dev/arduino-esp32fs-plugin for further information about how you can upload data to the SPIFFS.
Known issues and testing state
Tested and known to be working:
- Flashing
- Verification
Not tested:
- Reading only of hex files
- Different hex file sizes
- Other AVR MCUs than Atmega 328P
- Extended Frame Format
Test environment
- ESP32 incl. its integrated ESP32SJA1000 and an externally connected MCP2551 CAN tranceiver
- Atmega 328P incl. MCP2515 and MCP2551
- Hex file size: 70.569 Bytes
- Standard CAN frame format
- Target MCU reset via reset pin ()
TODO
- Test Extended frame format
- Integrate alternative "progress bar" for status report via serial
License
CC BY-NC-SA 4.0
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International