electronics/lw35-upgrade
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lw35-upgrade/doc/ioc.md
Markus Koch 14216b3888 ioc: avr-bootloader: Add Y command to bypass the subsequent device to bypass 
Note: Uncommented delay loop at beginning because of
code size limit.
2019-11-11 16:47:24 +01:00

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IOC

Firmware

General

  • All serial links run at 19200 baud

Bootloader

  • The bootloader is a standard Arduino bootloader with the following additions
    • Use ASCII command 'X' to enable byass mode. Everything received on UART RX will be forwarded to UART TX until the next reset.
    • Use ASCII command 'Y' to set the next unit in the chain into bypass mode.
    • Use ASCII command 'Z' to immediately launch into the user firmware
  • Use the following avrdude command to program: avrdude -p m8 -P /dev/ttyUSBx -c arduino -b 19200 -U flash:w:$(TARGET).hex