I have an application where I have a custom board with a TMS320F28377S, and I can plug in the XDS100, power everything up, enter debug mode, and it loads the code into the flash and I can debug it no problem. However, it doesn't seem to want to boot right into flash on powerup.
The problem I've found is that I'm using pins GPIO72 & GPIO84, which are needed by the bootloader, and at least one cannot be driven high at turn on. From what I have read of the technical reference manual, it appears that I have to write to the OTP to tell the bootloader to use a different set of pins, correct? There is no way I can make it jump to flash without the GPIO? Is it possible to write a custom bootloader that might bypass this check?
Secondary to this, this board has a CAN interface, and I'd like to have it so another device can feed it firmware updates over CAN, which I think means I have to play with the bootloader to make that work as well. Again glancing over the TRM (Sec 6.9.3) it sounds like you cannot have both a CAN-boot and Flash-boot at the same time, as you have to reconfigure GET mode to use one or the other via the OTP, is that correct? Given the OTP is one-time-programmable, that sounds like I can't do both. Am I looking at this right or is there a different approach entirely?
