Very Simple ICSP Programmer

[skimask]

Originally Posted by charudatt
I am not able to Program any PIC using the Simple Interface suggested. I am using Windows XP (SP2).

I get Programming failed at Dataaddress 000000h. Any help or suggestion. I am using ICP, Windows API , I/O delay 1. I tried changing these setting to diffrent settings but could not get the Chip to Prog. I am trying to Prog F72, F873A and F876

Hi Charudatt,
1. please check whether the programmer has external 13.5 volts for Vpp if the derived voltage from COM port is used, pl ensure its value by measurement.

2. Please try winpic800 programme and see. www.winpic800.com

That 1st post was over 1 1/2 years ago... Ya think he might have it figured out by now or had moved onto a different project... I'd doubt if he's sitting in front of his monitor staring into it waiting for another answer

[mvs_sarma]

......................That 1st post was over 1 1/2 years ago... Ya think he might have it figured out by now or had moved onto a different project... I'd doubt if he's sitting in front of his monitor staring into it waiting for another answer

Hi Skimask, you are right-- i too noticed it jsut after posting-- however, even if it is useful to anybody else, it serves-- coming to using winpic800 (ver3.60)programm, the hardware under concern is to be treated similar to propic 2 while configuring the hardware under winpic800 - this what the orginal hardware designer suggested.

i agree and this helps only to locate winpic800 drivers, which are really good.

[Squibcakes]

Bearpawz,

Show us your basic blink code and maybe we can figure it out. BTW did you use a dropping resistor on that LED? If not you may have blow up your IC. Don't suppose the polarity is around the wrong way?

Oh yeah, Winpic800 is a much quicker at programming than IC prog.. I suggest using that now days.

DTR/CTS lines connected to the data I/O are for Program reading and writing of the chip.

Cheers and....


Happy New Year to All

Squib

[NewBoy]

As Skimask says: do you have a pull-up res for MCLR pin in your LED blink circuit? 4K7 is hte commonly used value though higher vals will work with care.
Is your blink circuit power supply good? (With decoupling capacitors where necessary?)
As Squibcakes says: Do you have a dropping/limiting resistor for your LED? 470R to 2K2 should be fine unless you have a superfast 'blink'.

Is it possible to include res+LED etc in your programming circuit to save transferring PIC to the other board? (Just for testing).

If you go the bootloader route I can post a simple transistor circuit for programming via Tx and RX pins. (Easier/cheaper than MAX232 method though obv not true RS232 but it works 100%with the 6 PCs I've tried it with. No guarantees as i don't know how good your soldering is)

[mister_e]

Sorry all, but i would suggest you buy a Microchip PICKIT2 programmer. It's still <50$ and work perfectly (at least the few time i used it on the road).

I see a lot of problem here and there using those JDM etc etc few bucks programmer and free software. Now with Windows and USB to serial etc etc, it's getting hard to make them working.

If you have an old PC running windows '98 it could work better.

Your PC don't have DB9? buy a i/o card OR a USB programmer. The USB programmer like PICKIT 2 is still cheaper than an i/o card so far.

[bearpawz]

The blink code is a copy and paste from the PBP samples folder. Just added a few extra configuration lines... (oscon etc).

When the pic is flashed there is no problems with the program running correctly. The problem is more getting it to program the pic in the first place. Sometimes it works... more often it doesnt. Especialy if start getting complicated programs.

PS: My little programmer I bought on ebay is still a no show... how long does it take to get from Hong Kong to us via "air mail"?

[skimask]

The blink code is a copy and paste from the PBP samples folder. Just added a few extra configuration lines... (oscon etc).

When the pic is flashed there is no problems with the program running correctly. The problem is more getting it to program the pic in the first place. Sometimes it works... more often it doesnt. Especialy if start getting complicated programs.

PS: My little programmer I bought on ebay is still a no show... how long does it take to get from Hong Kong to us via "air mail"?

I had a couple of problems with my Warp13 programmer (serial port based) that caused me some headaches until I figured out that it was junk running in the background, mainly those programs that monitor cpu temps, fan speeds, etc. were causing it to mess up. Try killing all your background processes (well, not all, but at least everything in the tray) and then trying to program. heck, boot up in safe mode and see what happens.

[t_mask17]

Guyz I need help for the schematic diagram of this simple ICSP does it really work for 16f877a can you post the schematic diagram for this one.
Im a newbie in PIC and I'm using microcode studio but there are many problems like I build the required circuit but the software says reset the target microcontroller .. and some part of the threads here that I need a bootloader like tinybootloader

http://www.etc.ugal.ro/cchiculita/so...bootloader.htm

but what is the circuit requirements for this one in order to program a 16f877a

Pls reply guyz ASAP

Thanks alot