'Com 1 and Com 2 PIC Programmer Problem'
I have the PICSTART 16B1 Microchip Programmer, Using MP16B.exe in DOS
mode to connect to COM 1 and talk to the programmer. It worked good
until I starting using another piece of equipment that used COM 2. Now
the programmer will not work even though I have completely removed the
equipment that uses COM2.
I took the programmer and the program to another computer and it works
The error it displays is a timeout on accessing the port. I tried the
programmer on both COM1 and COM2. I check the drivers and it is using
serialui.dll and serial.vxd. The setup has the defaults (i.e 9600
baud). There is no conflicts shown in the system properties resources.
I tried replacing the cable from COM1 on the motherboard to the serial
connector. I though maybe a loose connection. I tried the new piece of
equipment on COM 1 and it works.
Does anyone know of other areas of the computer I can check for
conflicts or settings.
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At 10:00 20/12/99 +0530, you wrote:
>This happened if the other program hooks the com port. Reboot the PC and
>it should work fine.
Also keep in mind that the new equipment may have installed a driver in the
Autoexec,bat, config.sys or in the registry if using win 95/98/2000 in which
case a reboot will not fix the problem.
You may need to look in these places and also under start -> settings ->
control panel -> system -> ports for a driver attached to com 1
MPLAB compatible PIC programmers.
You may be able to go into the
Start / Settings / Control Panel / Modems - Diagnostics - More Info...,
and try to get Windows to access the COM port. Sometimes this action
can free it up if a closed program is still hogging it.
If you don't have a modem, create a dummy one.
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