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Re: [avr-chat] my USBasp programmer does not work but the one from ebay

From: YuGiOhJCJ Mailing-List
Subject: Re: [avr-chat] my USBasp programmer does not work but the one from ebay is working
Date: Sat, 23 May 2015 12:17:53 +0200

While checking again my wiring I found that C3 was connected to pin 6 of my 
ATMEL ATMEGA8 instead of pin 7.
After that, I try again to call avrdude and the green LED blinked one time!
It is the first time it happens.

In this case, that is what I see from avrdude output:
$ avrdude -p ATmega8 -c usbasp -U flash:w:main.hex
avrdude: error: programm enable: target doesn't answer. 1 
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude done.  Thank you.

But now, I am unable to blink again the green LED.
I came back to the first behavior from my previous message.
That is a bit weired that the behavior of my USBasp changes.

Anyway do you have suggestions in order to find some clues about the origins of 
this problem?

On Fri, 22 May 2015 19:10:23 +0200
YuGiOhJCJ Mailing-List <address@hidden> wrote:

> Hello,
> I am using an ebay USBasp programmer since several months but I would like to 
> build my own USBasp for fun.
> I build the firmware available in [1].
> Then, I flash the memory of an ATMEL ATMEGA8 using avrdude and my ebay USBasp 
> programmer.
> After that, I follow the schematics available in [1].
> Finally, I connect my USB cable and an other ATMEL ATMEGA8 to my breadboard 
> then I try my new USBasp programmer.
> When I connect my USBasp programmer I got this*:
> [20334.276595] usb 2-1.5: new low-speed USB device number 12 using ehci-pci
> [20339.367470] usb 2-1.5: New USB device found, idVendor=16c0, idProduct=05dc
> [20339.367481] usb 2-1.5: New USB device strings: Mfr=1, Product=2, 
> SerialNumber=0
> [20339.367484] usb 2-1.5: Product: USBasp
> [20339.367487] usb 2-1.5: Manufacturer: www.fischl.de
> If I call avrdude I got this**:
> avrdude: Warning: cannot query manufacturer for device: Connection timed out
> avrdude: Warning: cannot query product for device: Connection timed out
> avrdude: error: could not find USB device with vid=0x16c0 pid=0x5dc 
> vendor='www.fischl.de' product='USBasp'
> avrdude done.  Thank you.
> This is a photo of my breadboard:
> http://yugiohjcj.free.fr/usbasp.jpg
> I am wondering if you can guess what could be the problem.
> Any idea ?
> Thank you.
> Best regards.
> [1] http://www.fischl.de/usbasp/usbasp.2011-05-28.tar.gz
> * sometimes I got some strange errors like this :
> [22904.431625] usb 2-1.5: unable to read config index 0 descriptor/all
> [22904.431631] usb 2-1.5: can't read configurations, error -110
> but if I disconnect then reconnect the USB cable, these errors disappear.
> ** sometimes I got "Broken pipe" instead of "Connection timed out"
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> AVR-chat mailing list
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