Hi, all.
I am trying to do firmware upgrade for my LPC2368-based board.
After entering the bootloader in ISP mode from my application, I run the FlashMagic to re-program the on-board flash memory.
But, the process fails at the verification stage (i.e. the programming was successful), the FlashMagic reports about a difference between data in HEX file and the stored value.
I have to say, that besides the bootloader code and application code (the application runs from flash without being copied to SRAM), I store some configuration parameters in the same on-board flash device. What I have noticed is, when I configure the FlashMagic to 'erase full Flash', the whole operation succeeds, and the application starts up after reset, but, of course, all the configuration parameters' values are lost and I have to re-configure a few dozens of values.
My target is to allow the in-field firmware upgrade and to preserve the configuration data.
What are your opinions about this ?
Thanking you in advance.
PS. I enclose the following information in case it is important:
- My OS is FreeRTOS
- Before re-invoke the bootloader in ISP mode, I disable all interrupts, suspend all the tasks, and configure the GPIO pin P2.10 to output low.
- The hardware watchdog is disabled.
- The RS232 rates I tried to work with are range from 9,600 to 230,400.
- I disable the CRP completely
Thanks for your time.
maximb
You need to look at the memory map of your firmware. If you are using the Keil compiler then you can find this in the .map file it produces. I would suspect that something is going into the flash sector that you have reserved for your configuration parameters and/or bootloader. Also try moving the sector for your configuration parameters higher in memory.