1.7.3 UDP Bootloader Configurations
Bootloader Specific User Configurations
For Basic Bootloader
For Live Update Bootloader
Bootloader NVM Memory Used:
Specifies the memory peripheral used by bootloader to perform flash operations
The name of the peripheral will vary from device to device
Bootloader Size (Bytes):
Specifies the maximum size of flash required by the bootloader
This size is calculated based on Bootloader type and Memory used
This size will vary from device to device and should always be aligned to device erase unit size
Enable Bootloader Trigger From Firmware: (Basic Mode Only)
This Option can be used to Force Trigger bootloader from application firmware after a soft reset. It does so by reserving the specified number of bytes in SRAM from the start of the RAM. The reserved memory is updated by the application with a pre-defined pattern. The bootloader firmware in the bootloader_Trigger() routine, can check the reserved memory for the pre-defined pattern and enter bootloader mode if the pattern matches.
Number Of Bytes To Reserve From Start Of RAM:
This option adds the provided offset to RAM Start address in bootloader linker script.
Application firmware can store some pattern in the reserved bytes region from RAM start for bootloader to check at reset in bootloader_Trigger() function
Bootloader UDP Port Number:
Port number to be used to communicate via Unified Host Application
Use Dual Bank For Live Update:
Used to configure bootloader library to use Inactive bank of the device to upload the new application
This option is visible only for devices supporting Dual flash banks
Live Update Flash Bank Size (Bytes):
Specifies the size of bank in which both the bootloader and application code reside. Thisvalue by default will be half of the available Flash memory
Trigger Reset After Update:
This option can be used to trigger a Swap bank and reset immediatly after programming the application in inactive bank.
If not enabled, then the application code should call the bootloader_SwapAndReset() function to trigger Swap bank and reset
UDP Configurations
IPv4 Static Address: 102.168.1.11
To be used to configure Unified Host Application
IPv4 SubNet Mask: 255.255.255.0
IPv4 Default Gateway Address: 102.168.1.11
IPv4 Primary DNS: 102.168.1.11
Bootloader System Configurations (Basic Mode Only)
Application Start Address (Hex):
Start address of the application which will programmed by bootloader
This value is filled by bootloader when its loaded which is equal to the bootloader size. It can be modified as per user need
This value will be used by bootloader to Jump to application at device reset
Bootloader Linker Pre Processor Macros for CORTEX-M based MCUs
Based on the configurations the above linker pre processor macros will be generated in MPLAB X xc32-ld settings
ROM_LENGTH specifies the size of the bootloader
Basic Mode
Live Update Mode