TMS570LC4357: TMS570LC4357 bootloader.

Hello

 remotely programmed？use What technology

No, you don't have to use GPIO to trigger the update of the application through bootloader.

1. You can enable UART RX interrupt or DCAN RX interrupt

2. You send a command to application running on TMS570LC4x

3. When the application gets the Update Command, it write a Command to EEPROM (FEE)

4. SW reset or jump to 0x00000000

5. Bootloader read the Command in FEE, and call update function if the Command is for Update

By the way, you can use ethernet bootloader too.

UART...our herc is tied to a uart port on a "communciations" processor

Hello John,

What do you think about the method mentioned in my prior post? 

You can compare the Application SW revision, if they are different, the code jumps back to bootloader to update the application.