1.7.1 How the UDP Bootloader library works
The UDP Bootloader firmware communicates with the Unified Host application running on Host PC by using a predefined communication protocol.
The UDP Bootloader works in two different modes
Basic Mode
This mode is supported for all the devices
Resides from
The starting location of the flash memory region for CORTEX-M based MCUs
The starting location of the Boot flash memory region or Program flash memory region for MIPS based MCUs devices
The Bootloader performs flash erase/program/verify operations with the application hex sent from host PC using the Unified Bootloader Host Application while in the firmware upgrade mode
Bootloader always performs flash operation from the address received via hex record
The application can use the entire flash memory region starting from the end of bootloader space
Jumps to the application once programming is completed
Live Update Mode
This mode is supported for the devices which have a Dual Bank flash memory
Resides from
The starting location of the flash memory region of both the banks on CORTEX-M based MCUs along with application code
The starting location of the Program flash memory region of both the banks for MIPS based MCUs devices along with application code
The Bootloader task performs flash erase/program/verify operations with the application hex sent from host PC using the Unified Bootloader Host Application in the Inactive bank
Performs a bank swap and reset to run the application programmed in inactive bank on application task request