<p>I think I'll work on OTA of the front panel MCU first.</p><p>The front MCU is a STM32L431 with 256 kB of flash and 64 kB of RAM.</p><p>Flash is organized as 128 2 kB pages, so (unlike the main processor) I have plenty of granularity for exactly where I want to put the bootloader vs the application.</p><p>The front panel does not have any persistent configuration storage, all of its settings are pushed each boot from the main processor.</p><p>The front panel firmware is small enough (38K stripped ELF) that it should easily fit almost anywhere. Hmm...</p>
