On Mon, 10 Mar 2008 21:25:57 GMT, Tom <t.wyckoff@[EMAIL PROTECTED]
> wrote:
>pOTRice wrote:
>> Hi
>>
>> First time I've submitted to this group and unfortunately it has to be
>> to ask some kind soul for some help.
>>
>> For the last 5 years I have been sup****ting a 10-year old PIC 16C57
>> program by 'tinkering' - i.e by editing the assembler, using MPLAB
>> and sending the HEX file to the factory for them to test it in the
>> product hardware. This has been adequate for the low impact
>> modifications that have been required.
>>
>> However, I now have to do a serious modification to this program which
>> will require *me* to do thorough testing.
>> I have retrieved my MPSTART-16C chip programmer from its box (where
>> it's been for the last 5 years) set it up and connected it to COM1 on
>> a WIn98 PC using the 9-pin 'D' connector straight through lead
>> supplied with the kit.
>> Although MPSTART appears to successfully connect to the programmer
>> without any 'squeeks', it will only ever read back all zeroes from any
>> chip, blank or otherwise. The LED on the programmer *does* light up
>> while comms are apparently occurring.
>> The PICSTART manual does not specify the serial baud rate, number of
>> data bits or parity (but does mention the use of hardware flow
>> control).
>>
>> I am hoping that the symptoms are not caused by a dead programmer but
>> that I simply have the wrong comms configuration.
>>
>> The last time the programmer was used, it was connected to a real
>> *DOS* PC but unfortunately I can find no notes about how I got it
>> working first time round.
>>
>> So . . please can anybody confirm what the comms configuration should
>> be?
>>
>> TIA
>>
>> pOTRice
>As far as I can remember, it used 9600 8N1
>I still have mine around here someplace too. :-)
Many thanks for your quick reply Tom.
However, that was just the answer I didn't want to hear - that was the
first setting I tried (it was the default in Win98).
Starts to look like it may be the programmer.
A first trawl around the net suggests that the 16C57 really is
unsup****ted now. (I have no idea where my client actually buys them)
Some of the third parties' programmers specifically exclude it.
I believe I may have access to another MPSTART-16C programmer so may
be able to borrow that.
Thanks again
pOTRice
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