dsPIC30F6010A verify failed [solved]

[Happy Hunter]

Hi,

I'm trying to use the bootloader with dsPIC30F6010A.

I'm using "dsPICDEM 80-Pin Starter Development Board" from microchip with dsPIC30F6010A installed on it.

The bootloader can communicate with GUI, but every time I try to program my simple application I get verification error:

Initiating download...
Searching for bl .
Found dsPIC30F6010A fw ver. 3.0.0
Waiting for bootloader to be ready...ok
Writing flash...verification error,1 try
Writing flash...verification error,2 try
Writing flash...download failed
Download finished
Tx 409 bytes / Rx 8 bytes / 0.7s

Any ideas where I can start looking?

In the attached files: One is the bootloader sources that I updated and the PDF for dev board.

Thank you.

---

Ok,

I commented out the verification routine completely

; Verify upper byte
verloop:tblrdh.b [WADDR2], W0
cp.b W0, [WBUFPTR++]
; bra NZ, vfail
; Verify low byte
tblrdl.b [WADDR2++], W0
cp.b W0, [WBUFPTR++]
; bra NZ, vfail
; Verify high byte
tblrdl.b [WADDR2++], W0
cp.b W0, [WBUFPTR++]
; bra NZ, vfail
; Loop
dec WCNT, WCNT


Obviously I do not get verify errors at this time and I'm able to send my program to dsPIC.

After that I used Real ICE debugger to read program memory back and I can see that my program was written into flash and it is actually executed (the LED starts blinking).

So I assume the problem is somewhere with verification routine not with the writing routine

After playing with the verification routine again, I found that only
; Verify upper byte
verloop:tblrdh.b [WADDR2], W0
cp.b W0, [WBUFPTR++]
; bra NZ, vfail


portion is giving the verification error. If I still verify "low byte" and "high byte" the loader works OK without errors.

Something is missing when acessing the high portion of program word.