Changes

=MCU firmware versions=

=MCU firmware versions=

These reside in mcu-module .rodata, are uploaded to MCU register 0x05 and are usually 0x4003 bytes in size (the actual firmware is 0x4000 bytes preceeded by a 3 byte magic header "<code>jhl</code>") which switches the I2C comms into flash write mode.   

These reside in mcu-module .rodata, are uploaded to MCU register 0x05 and are usually 0x4003 bytes in size (the actual firmware is 0x4000 bytes preceeded by a 3 byte magic header "<code>jhl</code>" which switches the I2C comms into flash write mode).   

Switching requires register 0x05 (at address <code>0xFFBA9</code>) to contain 0x6A ('<code>j</code>'), register 0x06 containing 0x68 ('<code>h</code>'), and writing 0x6C ('<code>l</code>') to register 0x07. The actual flashing sequence is only signaled (code at 0x3312-0x331A) when writing register 0x07, it's skipped otherwise. Register 0x07 gets written anyways, just the actual signaling is skipped if the conditions aren't met.

Switching requires register 0x05 (at address <code>0xFFBA9</code>) to contain 0x6A ('<code>j</code>'), register 0x06 containing 0x68 ('<code>h</code>'), and writing 0x6C ('<code>l</code>') to register 0x07. The actual flashing sequence is only signaled (code at 0x3312-0x331A) when writing register 0x07, it's skipped otherwise. Register 0x07 gets written anyways, just the actual signaling is skipped if the conditions aren't met.