Author Topic: Writing hex file with usb to serial and pony prog (Read 10137 times)

rox2007 · « **on:** January 08, 2008, 07:59:57 PM »

I am designing the photovore robot and got stuck while writing to the mcu. i am using a usb to serial cable to connect my avr serial dongle to the mcu but every time i try to write i get the common error

"device missing or unknown device error"

can anyone help me please .
The connection to the mcu is correct. I dont know what i am doing wrong

airman00 · « **Reply #1 on:** January 09, 2008, 07:10:02 AM »

using Vista?

rox2007 · « **Reply #2 on:** January 09, 2008, 09:01:10 AM »

nope, i'm using XP and using a usb to serial cable.

Admin · « **Reply #3 on:** January 09, 2008, 11:59:12 AM »

http://www.societyofrobots.com/robotforum/index.php?topic=1116.0

rox2007 · « **Reply #4 on:** January 09, 2008, 03:22:09 PM »

i am using the cheap programmer you suggested. and i looked aT th at post

Admin · « **Reply #5 on:** January 09, 2008, 04:37:08 PM »

http://www.societyofrobots.com/robot_faq.shtml#circuit_debug

let us know the voltage results . . .

and if that still checks out . . . I suspect your usb to serial adaptor is causing the problem. I had problems with it and others have commented it is probably the cause of those problems.

rox2007 · « **Reply #6 on:** January 09, 2008, 05:52:21 PM »

I. Checked the voltages, the voltages are correct the programmer is getting the right voltage, 5v. I think the cable is bad. I might just get the expensive one

gamefreak · « **Reply #7 on:** January 09, 2008, 09:06:38 PM »

wait, check your reset wire, mine broke(took me a while to notice) and it said that error with a -24 after it.

rox2007 · « **Reply #8 on:** January 09, 2008, 10:52:46 PM »

I guess I could try that. But what do you mean by rest wire. Thank you for your help.

gamefreak · « **Reply #9 on:** January 10, 2008, 08:35:44 PM »

sorry I mean reset wire

Trumpkin · « **Reply #10 on:** January 11, 2008, 08:50:17 AM »

mine said error -24 and i just had a bridge on the programmer header.

rox2007 · « **Reply #11 on:** January 11, 2008, 11:43:53 AM »

i checked the reset wire and it was ok. i wanted to ask if the reset pin, on the atmega, should be connected to the ground if you dont have a reset button?

rox2007 · « **Reply #12 on:** January 14, 2008, 11:29:56 AM »

Good News,
I got it to work.
i got a desktop and used the comport on it. i guess you cant use usb to rs322 cables. i read somewhere that it is best to use a pcmia card.
thanks for your help.

paulstreats · « **Reply #13 on:** January 14, 2008, 11:41:32 AM »

most usb to serial adapters only emulate the rx and tx pins of a serial port so if atmega programmers require the other pins then youre stuck

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Author Topic: Writing hex file with usb to serial and pony prog (Read 10137 times)

rox2007

Writing hex file with usb to serial and pony prog

airman00

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

Admin

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

Admin

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

gamefreak

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

gamefreak

Re: Writing hex file with usb to serial and pony prog

Trumpkin

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

rox2007

Re: Writing hex file with usb to serial and pony prog

paulstreats

Re: Writing hex file with usb to serial and pony prog