USBASP error: program enable: no answer. 1

wiera · Joined: 06 Dec 2016 Posts: 4

Hi,

my project includes an Atmega1284P (TQFP44 package) which shall be programmed via a Chinese USBASP programmer using the BASCOM-AVR IDE. Trying to identify the chip, the IDE provides the following error message at any attempt “:Error: Program enable: no answer. 1” and the given Chip ID is wrong: either 000000 or FFFFFF.

This error is indicated with Auto, high or low clock frequency of the programmer. I am absolutely sure that the connections needed for programming are correct as well as the 10k resistor for reset pullup. The power supply is ok, too. As the programmer works well in a different project, it seems not to be faulty.

Can the 1284P have a defect? Has anyone a good explanation??

(BASCOM-AVR version : 2.0.7.6 , Latest : 2.0.7.8 )

bzijlstra · Posted: Tue Dec 06, 2016 7:27 pm Post subject: Check forum

Have you done a search in this forum? I see something about libusb and also something about a firmware upgrade.

Ben Zijlstra

wiera · Joined: 06 Dec 2016 Posts: 4

Yes, I did a search on the special error message and only found these general hints concerning USB driver and upgrade of the programmer. I am quite sure that the programmer is working fine, because I use it successfully in other projects with different processors. And BASCOM supports the 1284P chip since several years. In my opinion, the 1284P must be the problem.

Can anyone describe the intent and the reason of this error message in detail??

Paulvk · Joined: 28 Jul 2006 Posts: 1192 Location: SYDNEY

The clock speed setting is problematic if you have a 20Mhz crystal on the 1284P
you will have to play with the clock speeds to find which one works.
Or you can change the fuse bit and use the internal 8mhz RC while programming
then change back after programming is complete
at lower cpu clock speeds I have found it more stable.
Regards Paul

wiera · Joined: 06 Dec 2016 Posts: 4

Thank you, Paul.

I cannot change the fuse bits as long as the programmer is not able to connect to the chip and identify it. I played with the clock frequency of the programmer (which is adjustable in the BASCOM IDE) in the range of 8 kHz up to 1500 kHz with no success.

The 1284P chip (brand new) is equipped with an external crystal of 16 MHz and the recommended capacitors. If you apply the power to this brand new chip: would the oszillator already work, even if the fuse bits perhaps claim for the internal oszillator?? I cannot see any oszillation at the crystal pins of the chip in my circuit (oszillograph).

Paulvk · Joined: 28 Jul 2006 Posts: 1192 Location: SYDNEY

If the 1284P is new and has default fuse bits
8Mhz RC with divide by 8 set so 1Mhz clock

Note I have not used a 10K pullup on my boards with 1284P have both 40pin dip and 44pin tqfp

Regards Paul

EDC · Joined: 26 Mar 2014 Posts: 677

TopicOwner check that use version 2076.
In history.txt attached to version 2079 you can read "- usbasp programmer updated. chosen clock frequency will work. "
I dont know why someone want to use older Bascom version but then I will use some other tools to set fuse bits.
..and some of this chinese USBasp have old firmware that even not handle set CLK by software so you must reprogram it with soft from fishl.de site software.

wiera · Joined: 06 Dec 2016 Posts: 4

Hi,

the problem has been solved! Just for the fans who are interested in the solution:

By programming the fuse bits, I changed the internal RC oszillator to the external crysral oszillator. But the external oszillator did not work, as on of the capacitors connected to the crystal was shorted. After replacing of the capacitor, the external oszillator worked fine and I could address the chip via BASCOM-IDE and USBASP, even with higher clock frequency of the programmer.

As a side action: concerning the ATMEGA48 the BASCOM IDE V2.0.7.6 works very well with the chinese USBASP programmer from betemcu V 2011/03/05 in cluding the change of the programmer's clock frequency.

Thanks for the assistance!