Picstart Plus upgrade

jaybmiller · Guest

I'm in the process of replacing the 'old' 16F877s with 'new' 12F683s and/or 16F648as in some products.Obvioulsy need to order new C complier but first have to upgrade the hardware.Got the PUM kit,installed, installed MPLAB 5.70 and great...doesn't work. When I go to download OS to upgrade the firmware in the PS+, no dialog box pops up with the choice of the new .hex file to download.Also can't access a 16F877 in the programmer. My PS+ is and R4 ( old, just like me) and I've done all that Microchip has said to do. I have noticed that the serial cable pinout in the help file is different than what I have that's worked for 9 years!
Can anyone shed some light on what I have to do to make it all work? I do not want to buy the new CCS C compiler before I get the hardware up and running. All help is appreciated.
BTW MPLAB 5.70.40 has been fine for the past month or so using asm and C(v2.681) on both F84s and F877s.

Jay

davekelly · Joined: 04 Oct 2006 Posts: 53 Location: Berkshire, England

The Microchip forums are the best place for this query.

R4 is on the cusp of the revision for the PUM working.

Refer to http://forum.microchip.com/tm.aspx?m=228296

mindstorm88 · Joined: 06 Dec 2006 Posts: 102 Location: Montreal , Canada

I have a Rev. 0 (yes the real first series) that work great with the PUM ,your problem is your MPLAB version
here from Microchip :

jaybmiller · Guest

Hello Mindstorm. Can't believe someone has an older PS+. Just downloaded MPLAB7.51 and it doesn't work either with the PUM. It's ok with the 17C44 though. Can you check the wiring of your serial cable please? The table in the help file( I made one like it) doesn't work,unlike my 9 year old cable. Also when you selct 'download OS' do you get a window with files to choose from? I never do, and the MPLAB help files down show 'screenshots' of what to expect,ugh.
Man instead of going forward, I keep sliding back further.
All this just to 'roll my own' PS2 kbd interface instead of spending 20 bucks for one,arrrgh.....

tHANKS FOR ANY HELP, MICROCHIP IS SLOW.......ar, caps lock.

Jay

mindstorm88 · Joined: 06 Dec 2006 Posts: 102 Location: Montreal , Canada

you don't have to change the cable , i'm still using the same i got with it 12 years ago !!!!

re-install your 17C44 , then confirm with your old cable that it is ok with the new MPLAB , then put PUM back in, try using the same cable , if you cannot get communication , then ask Microchip for picstart replacement as stated on their PUM page !!!!