I've sent the message below to Mr. Wouter Van Ooijen. While waiting for =
his reply, I thought it would be a good Idea to post it in Piclist so =
that others using Mr.Wouter's device could also help.

I'm writing from India. Wish to thank you for your wonderful site on =
PICs, which I dare say is the best starting pint for beginners that I've =
come across till date.
=20
I have built your WISP628, but failed to make it work after having spent =
a lot of time & effort. Would be very much obliged for your help in =
sorting out the problem.

The target circuit I've used with a JDM programer I built, and it works

Target chip is a 16F877

I get the message --

raise self.WBus_Protocol_Error,\
__main__.WBus_Protocol_Error:send=3D'2804w' received=3D'2804?'          =
(2804 being the data to be programmed at location 0000H)=20

I also noticed that it  fails to read the chip ID. Message says -- ID =
either 0000 or FFFF. So I'm specifying the chip in the command line.

I've checked out the following --

1) I have the LED which blinks twice on switching ON the power, so know =
the 628 is working OK
2) I've connected RB3 to ground permanently
3) I've checked out the MAX232 in another circuit. It is working. Also =
tried replacing with a different unit.
4) Checked out the circuit and connections at least 20 times and ready =
to bet that everything is OK

What further checks can I perform on the circuit ? Can I connect a =
separate 12V supply directly to MCLR pin permanently ?

Once again thanks in advance for any help. I really would like to get =
this working.

Regards -- Biswanath Dutta
=20

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