I have an application that needs to rewrite my bootloader on a PIC32 device. After I disable interrupts, I try to erase 0x1fc00000 with NVMErasePage, but it does not erase, and NVMErasePage return a good status. How can I erase the boot flash from code?
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Not an expert on these things but, there is a register with a boot flash write protect bit, search the PIC32Mxxx/2xx data sheet for this.
DEVCFG0: DEVICE CONFIGURATION WORD 0
Check that out.
Mashly
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It appears I can not write this bit from code,and it it set to writable, the manual says says it is programable. – Dennis Kerrisk Feb 25 '14 at 20:46