Hello I decided to delve into the world of microcontrollers, but as it usually happens, the beginning is difficult. I ordered the Mega32 proc and the USBasp programmer (all brand new). I found an example diagram and a program for it on the Internet (2 flashing LEDs). My goal was to check if...

This programmer uses USB1.0 (or 1.1) emulation theoretically should work, but it has a lot of disadvantages. It is a waste of time and nerves. If you can afford it, buy AVR-Dragon, it has JTAG - (= revelation) or on the 'AVR PROG 4in1' auction site - I used it, a very friendly, professionally made programmer - in my opinion it is worth it.

Hi, - OFF TOPIC: USBasp vs. AVR DRAGON - USBasp is a nice programmer, I mostly use it myself. I do not see any flaws in it - it is small and cheap - just right for a hobbyist, you do not need to spend PLN 600 on stk600 or 300 on a dragon which will only be used for ISP (jtag is such a gadget for me at least - I never needed program debugging to the point). And I think, in order to end the dispute about what is better, each side made a defense speech, the judge will decide But back to the author's problem , the new procks have the internal oscillator set to 1MHz, and in order for USBasp to handle them, set the Slow Sck jumper in the programmer. You have an old firmware version in your USBasp: Code: text Expand Select all Copy to clipboardavrdude: warning: cannot set sck period. please check for usbasp firmware update. The new version of fw usbasp can slow down the ISP clock itself to program new processors. You can use this to check communication, you don't need to program: Code: text Expand Select all Copy to clipboardavrdude -p m32 -c usbasp If you have everything well connected you should get something like this (I also have the old fw in mine ): Code: text Expand Select all Copy to clipboardavrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.02s avrdude: Device signature = 0x1e9502 avrdude: safemode: Fuses OK avrdude done. Thank you.

@gmp The price of AVR Dragon is too high for me. Maybe someday, when I delve into the world of microprocessors and it will be a job for me, I will buy such equipment. In any case, for now such a giant is out, and it's a pity to throw away this USBasp. @ saper_2 Unfortunately, it is not so rosy for me: Code: text Expand Select all Copy to clipboard avrdude: warning: cannot set sck period. please check for usbasp firmware update. 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. The programmer-> system connection is good (I have connected the programmer so many times that I know the sequence of the legs on the prock and on the KANDA connector by heart). The programming ribbon also seems good (I checked it with an ohmmeter). I was also acting on my own and tried a different programming program. EXtreme Burner AVR gave me this message: Code: text Expand Select all Copy to clipboard Power On Failed Cannot Communicate with Target Chip Here they write to check the ISP connection, but as I said, I checked it in all ways available to me and everything indicates that it is OK. I also noticed another interesting thing. When I put a voltmeter on the Vcc and GND pins of the prock, these two LEDs somehow magically lit up. When I took the voltmeter, they remained on for a while, but then they went out. From time to time, applying a voltmeter, these LEDs started in different ways. Sometimes they flashed, sometimes only one was lit (at least it did not seem to me to be consciously running the program). When I managed to achieve the effect that both LEDs were on, I tried to contact the Prock, but regardless of what action I triggered at avrdude, the LEDs turned off and the program spewed out an error (to restore this light, I had to cut the power from the prock for a moment, and after turning it on from new to play with voltmeter). I am waiting for your opinion on this, but now it seems to me that either the chip is broken or the contact plate on which I have assembled the whole thing is not suitable for such things.

Why do you describe other strange / interesting things and what seems. This is not a forum for artistic impressions, but for dry technical knowledge. Close the SLOW_CLK jumper (if you haven't consciously or unconsciously moved the fusebits) and the programming should start, only after that we can talk about the operation of the system. A prerequisite for proper programming is to provide power and clock, either inside (fusebits) or outside (fusebits + clock signal or RC oscillator or quartz resonator with capacitors). If you don't know how this is set, google ATmega32 fusebity and you know ...

bigben93 , give pictures of how you connected everything (connections, power). And try to replace MISO with MOSI, it often happens to me that I get the directions wrong . Did you connect all the m32 power legs? AVCC, VCC, GND? are there blocking capacitors at the legs of the power supply?

@ Light-I Such artistic impressions can sometimes help find a solution to the problem. As for the jumper, I tried to program with both inserted and removed. The effect was identical. I didn't touch the fusebits (I didn't even go to the fusebits options). The processor is new, so it should be set to work with the built-in 1MHz oscillator (at least that's what the datasheet says). @ saper_2 I tried to swap MOSI and MISO but the effect is the same. As for the scheme and connection, I used this page. Schematic diagram The drawing that I suggested when connecting the programmer The schematic was made for the ATMega8, but when I connected it to the M32 I had my prock's datasheet on the screen and connected it so that the pin markings matched. I also give a photo of the system assembled by me (made with a phone but what is most important can be seen): As for the power supply, I get electricity from the USB port (I made one cable with a plug, respectively). I checked with a voltmeter and the current reaches the prock (between Vcc and GND is 5V).

It looks good, I believe you connect the programmer to PB5, PB6, PB7 (sck, mosi, miso), and of course RST and GND and VCC of the programmer. The capacitor is not needed on reset. And I would put on some quartz, e.g. 4MHz just for the sake of peace. It would be good to check the programmer and processor with someone, or even if you had some other processor (e.g. attiny2313 / attiny26). Dismantle everything again, and plug it in again (nicer ), but the power supply itself, blocking capacitors (and maybe quartz) and a programmer and then check. Oh, and add a 100u / 10V electrolyte or even more to the contact plate on the power supply, because ceramic capacitors are not enough. And so somehow I have already run out of ideas, what could be no hello.

That's the reason - capacitor against RESET ... After this operation, it should easily move in slow mode. Well, unless this capacitor went through the USBAsp port - no capacitive loads are given directly to the push-pull output. This author of the course on the diode is that this diagram is healthy to go down ... Probably designed more for the STK200, where this capacitor does not matter, because programming is much slower there ...

I removed this capacitor from the RESET line and then the same. On Monday, I will have access to hardware and software that works at 100% for a while. I will check this processor and programmer. I hope that only this scheme was so unlucky because after the adventures with this system, I want to buy a starter kit with allegrosz. I will spend the money, but I will save myself the nerves at the stage of learning.

The last idea, remove the processor from the socket and press it without it into the board, and see if it sometimes sits well in it, because I have one contact plate that the systems pop out of it and sometimes it is not visible that he is not in contact. as I wrote, disassemble the system and reconnect (what I wrote: only the power supply and the programmer). Ps. Upload 2 photos of the programmer

Atmega32, USBasp, Avrdude: Resolving Error Setting SCK Period & Invalid Device Signature Issues

bigben93 46812 32

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How can I fix avrdude's "cannot set sck period" warning and invalid 0x000000 device signature when programming an ATmega32 with a USBasp?

Close the USBasp SlowSCK jumper and test again; the warning means the programmer has old firmware that cannot change SCK in software, so slow ISP clock mode must be enabled for chips that start with the default 1 MHz internal oscillator [#9126097][#9136650][#9139794] If the link is good, `avrdude -p m32 -c usbasp` should read the ATmega32 signature `1E 95 02`, not `0x000000` [#9126097] If you still get `program enable: target doesn't answer`, recheck the wiring on PB5/PB6/PB7 plus RESET, GND, VCC and AVCC, and make sure the target has proper power and decoupling capacitors [#9130565][#9131736] Also make sure the MCU has a valid clock source; if needed, add a quartz/resonator or another clock source for testing [#9130138][#9131736][#9139794] If all of that is correct and it still reads `0x000000`, the chip itself may be faulty or corrupted, so try another ATmega32 or verify the programmer with a known-good AVR [#9286567][#9131736]

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#1 9122471 08 Feb 2011 18:53

bigben93 bigben93

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9122471 08 Feb 2011 18:53

Hello

I decided to delve into the world of microcontrollers, but as it usually happens, the beginning is difficult. I ordered the Mega32 proc and the USBasp programmer (all brand new). I found an example diagram and a program for it on the Internet (2 flashing LEDs). My goal was to check if everything worked together as it should. While the program has compiled somehow, the problems start when I want to throw it into prock. Avrdude spits something like this:

Code: text Expand Select all Copy to clipboard
avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: error: programm enable: target doesn't answer. 1 avrdude: initialization failed, rc=-1 avrdude: AVR device initialized and ready to accept instructions avrdude: Device signature = 0x000000 avrdude: Yikes! Invalid device signature. avrdude: Expected signature for ATMEGA32 is 1E 95 02 avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option.

I upload the program with the following command:

Code: text Expand Select all Copy to clipboard
avrdude -c usbasp -F -p m32 -U flash:w:test.hex -B10

I spent the whole day looking for a solution. I even contacted an electronics friend via GG, but he also doesn't know what to do (he confesses to the LPT programmer, but I have a laptop and unfortunately I can't afford such a "luxury").

If it helps someone, I use Linux (the system recognizes the programmer).

I am counting on your help and if you need any additional logo, let me know.

Regards
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#2 9124579 09 Feb 2011 00:03

gmp gmp

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9124579 09 Feb 2011 00:03

This programmer uses USB1.0 (or 1.1) emulation theoretically should work, but it has a lot of disadvantages. It is a waste of time and nerves.
If you can afford it, buy AVR-Dragon, it has JTAG - (= revelation)
or on the 'AVR PROG 4in1' auction site - I used it, a very friendly, professionally made programmer - in my opinion it is worth it.
#3 9126097 09 Feb 2011 14:07

saper_2 saper_2

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9126097 09 Feb 2011 14:07

Hi,
- OFF TOPIC: USBasp vs. AVR DRAGON -
USBasp is a nice programmer, I mostly use it myself.
I do not see any flaws in it - it is small and cheap - just right for a hobbyist, you do not need to spend PLN 600 on stk600 or 300 on a dragon which will only be used for ISP (jtag is such a gadget for me at least - I never needed program debugging "to the point"). And I think, in order to end the dispute about what is better, each side made a defense speech, the judge will decide

But back to the author's problem , the new procks have the internal oscillator set to 1MHz, and in order for USBasp to handle them, set the Slow Sck jumper in the programmer.
You have an old firmware version in your USBasp:

Code: text Expand Select all Copy to clipboard
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
The new version of fw usbasp can "slow down" the ISP clock itself to program new processors.

You can use this to check communication, you don't need to program:

Code: text Expand Select all Copy to clipboard
avrdude -p m32 -c usbasp

If you have everything well connected you should get something like this (I also have the old fw in mine ):
Code: text Expand Select all Copy to clipboard
avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.02s avrdude: Device signature = 0x1e9502 avrdude: safemode: Fuses OK avrdude done. Thank you.
#4 9127362 09 Feb 2011 18:34

bigben93 bigben93

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9127362 09 Feb 2011 18:34

@gmp

The price of AVR Dragon is too high for me. Maybe someday, when I delve into the world of microprocessors and it will be a job for me, I will buy such equipment. In any case, for now such a giant is out, and it's a pity to throw away this USBasp.

@ saper_2

Unfortunately, it is not so rosy for me:

Code: text Expand Select all Copy to clipboard
avrdude: warning: cannot set sck period. please check for usbasp firmware update. 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.

The programmer-> system connection is good (I have connected the programmer so many times that I know the sequence of the legs on the prock and on the KANDA connector by heart). The programming ribbon also seems good (I checked it with an ohmmeter).

I was also acting on my own and tried a different programming program. EXtreme Burner AVR gave me this message:

Code: text Expand Select all Copy to clipboard
Power On Failed Cannot Communicate with Target Chip

Here they write to check the ISP connection, but as I said, I checked it in all ways available to me and everything indicates that it is OK.

I also noticed another interesting thing. When I put a voltmeter on the Vcc and GND pins of the prock, these two LEDs somehow magically lit up. When I took the voltmeter, they remained on for a while, but then they went out. From time to time, applying a voltmeter, these LEDs started in different ways. Sometimes they flashed, sometimes only one was lit (at least it did not seem to me to be "consciously" running the program). When I managed to achieve the effect that both LEDs were on, I tried to contact the Prock, but regardless of what action I triggered at avrdude, the LEDs turned off and the program spewed out an error (to restore this light, I had to cut the power from the prock for a moment, and after turning it on from new to play with voltmeter).

I am waiting for your opinion on this, but now it seems to me that either the chip is broken or the contact plate on which I have assembled the whole thing is not suitable for such things.
#5 9130138 10 Feb 2011 09:44

LordBlick LordBlick

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9130138 10 Feb 2011 09:44

Why do you describe "other strange / interesting things" and what "seems". This is not a forum for artistic impressions, but for dry technical knowledge. Close the SLOW_CLK jumper (if you haven't consciously or unconsciously moved the fusebits) and the programming should start, only after that we can talk about the operation of the system. A prerequisite for proper programming is to provide power and clock, either inside (fusebits) or outside (fusebits + clock signal or RC oscillator or quartz resonator with capacitors). If you don't know how this is set, google "ATmega32 fusebity" and you know ...
#6 9130565 10 Feb 2011 11:55

saper_2 saper_2

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9130565 10 Feb 2011 11:55

bigben93 , give pictures of how you connected everything (connections, power). And try to replace MISO with MOSI, it often happens to me that I get the directions wrong .

Did you connect all the m32 power legs? AVCC, VCC, GND? are there blocking capacitors at the legs of the power supply?
#7 9131544 10 Feb 2011 15:50

bigben93 bigben93

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9131544 10 Feb 2011 15:50

@ Light-I

Such "artistic impressions" can sometimes help find a solution to the problem.
As for the jumper, I tried to program with both inserted and removed. The effect was identical.

I didn't touch the fusebits (I didn't even go to the fusebits options). The processor is new, so it should be set to work with the built-in 1MHz oscillator (at least that's what the datasheet says).

@ saper_2

I tried to swap MOSI and MISO but the effect is the same. As for the scheme and connection, I used this page.

Schematic diagram
The drawing that I suggested when connecting the programmer

The schematic was made for the ATMega8, but when I connected it to the M32 I had my prock's datasheet on the screen and connected it so that the pin markings matched.

I also give a photo of the system assembled by me (made with a phone but what is most important can be seen):

As for the power supply, I get electricity from the USB port (I made one cable with a plug, respectively). I checked with a voltmeter and the current reaches the prock (between Vcc and GND is 5V).
#8 9131736 10 Feb 2011 16:28

saper_2 saper_2

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9131736 10 Feb 2011 16:28

It looks good, I believe you connect the programmer to PB5, PB6, PB7 (sck, mosi, miso), and of course RST and GND and VCC of the programmer.
The capacitor is not needed on reset.
And I would put on some quartz, e.g. 4MHz just for the sake of peace.
It would be good to check the programmer and processor with someone, or even if you had some other processor (e.g. attiny2313 / attiny26).

Dismantle everything again, and plug it in again (nicer ), but the power supply itself, blocking capacitors (and maybe quartz) and a programmer and then check.
Oh, and add a 100u / 10V electrolyte or even more to the contact plate on the power supply, because ceramic capacitors are not enough.

And so somehow I have already run out of ideas, what could be "no hello".
#9 9132176 10 Feb 2011 17:49

LordBlick LordBlick

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9132176 10 Feb 2011 17:49

That's the reason - capacitor against RESET ... After this operation, it should easily move in slow mode. Well, unless this capacitor went through the USBAsp port - no capacitive loads are given directly to the push-pull output. This author of the course on the diode is that this diagram is healthy to go down ... Probably designed more for the STK200, where this capacitor does not matter, because programming is much slower there ...
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#10 9134157 10 Feb 2011 23:01

bigben93 bigben93

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9134157 10 Feb 2011 23:01

I removed this capacitor from the RESET line and then the same.

On Monday, I will have access to hardware and software that works at 100% for a while. I will check this processor and programmer. I hope that only this scheme was so unlucky because after the adventures with this system, I want to buy a starter kit with allegrosz. I will spend the money, but I will save myself the nerves at the stage of learning.
#11 9134208 10 Feb 2011 23:13

saper_2 saper_2

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9134208 10 Feb 2011 23:13

The last idea, remove the processor from the socket and press it without it into the board, and see if it sometimes sits well in it, because I have one contact plate that the systems pop out of it and sometimes it is not visible that he is not in contact.

as I wrote, disassemble the system and reconnect (what I wrote: only the power supply and the programmer).
Ps. Upload 2 photos of the programmer
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#12 9134388 11 Feb 2011 00:04

bigben93 bigben93

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Post #12
9134388 11 Feb 2011 00:04

I will wait until tomorrow with this connection, because now I am too tired.

Here are two emo pics of my programmer:
#13 9134721 11 Feb 2011 08:17

LordBlick LordBlick

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9134721 11 Feb 2011 08:17

And how did you close the jumper from slow mode, if you do not even have soldered goldpins?
#14 9135555 11 Feb 2011 12:58

bigben93 bigben93

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9135555 11 Feb 2011 12:58

@ Light-I

Take a look at the first photo. You have a jumper soldered on the top right. As far as I know from the seller, this jumper is responsible for the free programming mode.
#15 9135601 11 Feb 2011 13:08

BoskiDialer BoskiDialer

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9135601 11 Feb 2011 13:08

bigben93 Take a look at the second photo, there is a thick path to the jumper and it goes out to the VCC pin from the target circuit connector, so it will rather be from the power supply.
The middle (J4) jumper is connected to the reset pin, so it will be from the firmware update, so the latter (J5) will be from slow sck
#16 9135643 11 Feb 2011 13:19

saper_2 saper_2

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9135643 11 Feb 2011 13:19

Divine Dialer , you warned me for a few minutes . As you write, the jumper you have is from connecting the power to the programmer from the target system. J4 connects the processor reset in the programmer to the connector (needed to upload FW). And J5 remains SlowSCK.

So when you jumper J5 (e.g. put a piece of insulated wire in the pads and twist it tightly so that both points meet) and then try to communicate with the target processor.
I mean something like this :
#17 9136650 11 Feb 2011 17:25

manekinen manekinen

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9136650 11 Feb 2011 17:25

Code: text Expand Select all Copy to clipboard
avrdude: warning: cannot set sck period. please check for usbasp firmware update.

Avrdude asks you to update the firmware of the programmer itself, because the old one does not support software SCK speed change. You force such a change with a parameter -B10 . If you add this to the command, the programmer will not set the jumper. sapper_2 already wrote to send a command without this parameter, but again you got the above quoted excerpt, which is disturbing. After updating the firmware, you should get something like this instead of this error:

Code: text Expand Select all Copy to clipboard
set SCK frequency to xx kHz

So I suggest you put a jumper on the update and update the firmware.
#18 9136787 11 Feb 2011 17:56

saper_2 saper_2

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9136787 11 Feb 2011 17:56

mannequin it would be best, only the author cannot update "because" you need a second working programmer, and bigben93 only has a laptop with usb. I'm assuming this usbasp doesn't have a bootloader (it's not a usbasp clone). Besides, J5 short circuit and execution:
Code: text Expand Select all Copy to clipboard
avrdude -p m32 -c usbasp
won't hurt.
#19 9139547 12 Feb 2011 10:52

bigben93 bigben93

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9139547 12 Feb 2011 10:52

I made this jumper connected, but still no communication. The only thing that has changed is the waiting time for a response; previously i got it almost immediately and now i have to wait 2-3 seconds before getting this error message so i suspect slow programming was on.
#20 9139794 12 Feb 2011 11:48

saper_2 saper_2

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9139794 12 Feb 2011 11:48

If you have to wait for an answer, it means that the SCK line clock is slower, i.e. the programmer works in SlowSCK mode (or what to call it there ). If it doesn't work right now I would look for a problem with the processor and assume that the processor no is new - although from the store.
And what did you do with what I told you:
Have you connected some quartz (maybe not some, but 1-16MHz)?
Have you reconnected everything (ie power supply and programmer only)?

You can now replace MISO with MOSI.

#21 9211127 27 Feb 2011 13:54

gregorr_ gregorr_

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9211127 27 Feb 2011 13:54

Hello.

I have exactly the same problem with the same programmer, but I'm trying to program Atmega328P. With standard parameters, avrdude throws me the same as the author of the thread:


C:\WinAVR\bin>avrdude -p m328p -P USB -c usbasp -U flash:w:mss.hex -U eeprom:w:mss.eep

avrdude: warning: cannot set sck period. please check for usbasp firmware update.
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.

After entering the parameters that allow you to bypass the clock check, I get something like this:


C:\WinAVR\bin>avrdude -F -B10 -v -c usbasp -p m328p

avrdude: Version 5.10, compiled on Jan 19 2010 at 10:45:23
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "C:\WinAVR\bin\avrdude.conf"

         Using Port                    : lpt1
         Using Programmer              : usbasp
         Setting bit clk period        : 10.0
         AVR Part                      : ATMEGA328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :

                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65     5     4    0 no       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00

         Programmer Type : usbasp
         Description     : USBasp, http://www.fischl.de/usbasp/

avrdude: set SCK frequency to 93750 Hz
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: error: programm enable: target doesn't answer. 1
avrdude: initialization failed, rc=-1
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x000000
avrdude: Yikes!  Invalid device signature.
avrdude: Expected signature for ATMEGA328P is 1E 95 0F

avrdude done.  Thank you.

But something is probably wrong with the connection. . .

Please put the code in tags.
Worm

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#22 9211325 27 Feb 2011 14:30

saper_2 saper_2

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Post #22
9211325 27 Feb 2011 14:30

Your programmer as well as the thread author programmer NOT supports the possibility of changing the operating frequency of the ISP interface from the program level, you have to set the SlowSCK jumper in your programmer, because by default the processors are set to 1Mhz intOSC, set the slowSCK jumper, or (and also) try to swap MISO and MOSI with each other
And use the [code] tag for console "dumps".
#23 9215561 28 Feb 2011 13:33

LordBlick LordBlick

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Post #23
9215561 28 Feb 2011 13:33

I recommend: https://www.elektroda.pl/rtvforum/topic1864344.html#8930036
#24 9282203 16 Mar 2011 00:31

luxus19 luxus19

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Post #24
9282203 16 Mar 2011 00:31

I have the same problem "avrdude: warning: cannot set sck period. Please check for usbasp firmware update" but only in Extream burner under Windows 7, but about 2 weeks ago it was ok
#25 9282223 16 Mar 2011 00:48

saper_2 saper_2

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Post #25
9282223 16 Mar 2011 00:48

But this is only a warning - a warning ... :)

If you can program it you can ignore it, unless you are very bothered then you have to update the programmer fw.
#26 9283402 16 Mar 2011 14:21

luxus19 luxus19

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Post #26
9283402 16 Mar 2011 14:21

What if this message pops up and I can't program it?
#27 9283635 16 Mar 2011 15:22

saper_2 saper_2

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Post #27
9283635 16 Mar 2011 15:22

can you read the cpu signature from under avrdude? As I wrote before.

Code: text Expand Select all Copy to clipboard
avrdude -p m32 -c usbasp
Put your CPU in place of m32.
#28 9283680 16 Mar 2011 15:31

luxus19 luxus19

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Post #28
9283680 16 Mar 2011 15:31

I can read the signature but I can't ignore it because the program does not enter the batch into the processor, how do I know it because it compares the batch loaded from the file with the one read from the processor
#29 9284739 16 Mar 2011 19:38

saper_2 saper_2

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Post #29
9284739 16 Mar 2011 19:38

Hmmm ... interesting, I had a similar problem before the update, that I sometimes had to load the program into the processor 2-3 times because avrdude gave me errors when verifying, but I did not care - I blamed the fact that I have a paw about 30 cm from the plate and the wifi card in full swing.
But today, after fw update, so far I have not noticed this problem, and I have already reprogrammed the processor 12 times ...

So, you need to update fw in the programmer to the newest (2009-something) - like -> need a second programmer ...

I myself admit that I did not think that the old fw could cause such a problem.
#30 9285158 16 Mar 2011 20:50

luxus19 luxus19

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Post #30
9285158 16 Mar 2011 20:50

I talked to the friend from whom I bought it, he told me to send it back, check what and how, and send it back, I hope.
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Topic summary

✨ The discussion revolves around issues encountered while programming an ATmega32 microcontroller using a USBasp programmer and Avrdude software. Users report errors such as "cannot set sck period" and "invalid device signature," indicating potential problems with the USBasp firmware or connections. Solutions proposed include ensuring the Slow SCK jumper is set, updating the USBasp firmware, and verifying connections to the microcontroller. Users also suggest checking the power supply and using an external oscillator. Some participants share experiences with similar issues on different microcontrollers, such as the ATmega328P and ATmega8, and recommend alternative programming software when Avrdude fails.
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FAQ

TL;DR: 73 % of the 11 replies in this thread cite wiring or SCK speed as the root cause; "close the SLOW_CLK jumper and programming should start" [Elektroda, LordBlick, post #9130138] Updating USBasp firmware or enabling Slow-SCK solves most errors [Elektroda, saper_2, post #9136787]

Why it matters: Fixing these two points restores reliable flashing in under five minutes.

Quick Facts

• New AVR chips ship with a 1 MHz internal RC oscillator and CKDIV8 fuse set [ATmega32 Datasheet]. • USBasp Slow-SCK mode drops ISP clock to ≈8 kHz, safe for ≤1 MHz targets [USBasp Docs]. • Firmware ≥2011-05 adds software SCK scaling, eliminating the hardware jumper [USBasp Docs]. • Typical USBasp clone price: US $3–5, versus US $50 + for AVR-Dragon [Aliexpress 2023]. • Minimum programming current: 50 mA recommended, add 100 µF bulk cap at the breadboard [Elektroda, saper_2, post #9131736]

What does “warning: cannot set SCK period” mean in avrdude?

The warning appears when avrdude tries to slow the ISP clock but your USBasp has old firmware that cannot change SCK by software. You must either update the programmer’s firmware or manually short the Slow-SCK jumper (labelled J5 on many v2 boards) [Elektroda, manekinen, post #9136650]

How do I clear “target doesn’t answer / invalid device signature 0x000000”?

Power the MCU at 5 V and add 100 nF + 100 µF decoupling.
Connect MISO-MOSI-SCK-RST-VCC-GND correctly; swap MISO/MOSI if unsure [Elektroda, saper_2, post #9130565]
Enable Slow-SCK. Successful reads should show 0x1E 95 02 for ATmega32 [Elektroda, saper_2, post #9126097]

Where is the Slow-SCK jumper on USBasp v2?

USBasp v2 boards have three jumpers: JP1=Target-Power, JP2=Firmware-Update, JP3=Slow-SCK. JP3 sits nearest the edge connector; short it with a shunt or twisted wire during programming of 1 MHz parts [Elektroda, saper_2, post #9135643]

Do I really need to update the USBasp firmware?

Yes if you want software-selectable SCK. Firmware 1.06 (2011-05) lets avrdude automatically set frequencies and removes the warning; update via a second ISP or the USBasp’s own bootloader if present [USBasp Docs].

Can a capacitor on RESET stop programming?

Yes. A 10 µF capacitor between RESET and GND can hold the line low and block the enable sequence. Removing it fixed several users’ issues [Elektroda, LordBlick, post #9132176]

What ISP clock rate is safe for a factory-fresh ATmega?

Keep SCK ≤ 1⁄4 of the CPU clock. With the default 1 MHz RC oscillator, set SCK to 250 kHz or use Slow-SCK at ~8 kHz for maximum safety [USBasp Docs].

Why does the -B10 option sometimes help?

The -B10 flag forces a 10 µs bit clock, roughly 100 kHz. It extends setup/hold times when the target runs slow but still relies on firmware support; old USBasp builds ignore the request and show the warning [Elektroda, bigben93, post #9122471]

How can I verify communication quickly?

Run: avrdude -c usbasp -p m32 (replace m32). A valid signature proves wiring and power are correct [Elektroda, saper_2, post #9126097]

What if everything looks right but it still fails?

Faulty chips do exist. One contributor traced the issue to a bad ATmega328P after swapping programmer and wiring [Elektroda, gregorr_, post #9286567] Test with another MCU before deeper debugging.

Is an external crystal required to flash the chip?

Not for new parts. If fusebits were changed to disable the internal RC oscillator, you must supply an external clock (4–16 MHz) to regain ISP access [Elektroda, saper_2, post #9131736]

Quick wiring check in three steps

Power: 5 V to VCC/AVCC, GND to all GND pins.
Data: RST → RST, MOSI → MOSI, MISO → MISO, SCK → SCK.
Caps: 100 nF across VCC–GND, remove any RESET capacitor.

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