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platformio / platform-atmelavr

Atmel AVR: development platform for PlatformIO
https://registry.platformio.org/platforms/platformio/atmelavr
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Verify upload to AtTiny85 fails. #14

Closed NormanDunbar closed 7 years ago

NormanDunbar commented 7 years ago

ORIGINALLY RAISED WITH PLATFORMIO. ADVISED TO TAKE IT HERE.

Configuration

Operating system: Linux Mint 18, 64 bit.

PlatformIO Version: IDE=1.6.0, CLI=3.1.0

Description of problem

After upgrading to latest PlatformIO, all my AtTiny85 scripts fail to verify. Each is Arduino compatible, and work fine on the Arduino IDE.

Please refer back to https://github.com/platformio/platformio/issues/799 and https://github.com/platformio/platformio/issues/800 for the full details.

I upgraded the Atom packages to the latest versions, now I cannot upload to an AtTiny85 using my USBTinyISP programmer any more. If fails at the verify stage of avrdude.

I followed the instaructions for the use of a programmer by visiting http://docs.platformio.org/en/stable/platforms/atmelavr.html#upload-using-programmer and my current platformio.ini is as follows:

The content of platformio.ini:

[env:attiny85]
platform=atmelavr
board=attiny85
framework=arduino
upload_protocol = usbtiny

[platformio]
src_dir=AtTiny85_Blink

After adding the upload_protocol option, exactly the same happens. Same error message - unable to verify after uploading. I'm advised that I need to be using g program rather than upload, but it doesn't seem to change anything. I'm still seeing g, briefly, the words platformio and upload as opposed to program.

With the Arduino IDE, I don't even have to "upload using programmer" to get a valid write and verify, upload works just fine.

With PlatformIO, until I upgraded, I had no problems uploading - as opposed to programming - with the platformio.ini that I originally posted. Only after the upgrade were there any problems. I'm still at the point of being unable to program any of my AtTiny85 chips.

Changing to the advised upload_protocol had no effect. Still fails to verify the upload.

Sorry. :(

Cheers.

stonehippo commented 7 years ago

I can confirm that I am having the same issue with multiple ATTiny85s. I've tried using both a Sparkfun Tiny USB programmer and an Adafruit Trinket 3v. Both fail to verify after upload. Can upload fine from Arduino IDE.

StevenChristy commented 7 years ago

Same issue. Using PlatformIO in Atom all 3 of my attiny85-20pu chips could be programmed once using a brand new Sparkfun Tiny AVR Programmer. Any subsequent changes to the program are made, I upload and the verification fails. I found that if I used the Arduino IDE function "Burn bootloader" on the chip then it could be reprogrammed again, exactly once. No verify failure is returned if you keep uploading the same program repeatedly. Could it be that the flash is not getting erased properly?

StevenChristy commented 7 years ago

Nevermind, I found the resolution to my problem. I need to "program" instead of "upload" - http://docs.platformio.org/en/latest/platforms/atmelavr.html#upload-using-programmer

StevenChristy commented 7 years ago

Just thought I'd share some more info on this. I found it annoying to use "program" every time as I am already used to hitting the upload button in the IDE. A simple fix for this was to tell avrdude to erase the flash before writing by adding the -e option in the upload_flags variable in the platformio.ini file. So the basic config that solves the problem is:

[env:attiny85]
platform = atmelavr
board = attiny85
framework = arduino
upload_protocol = usbtiny
upload_flags = -e
ivankravets commented 7 years ago

@NormanDunbar, @stonehippo could you confirm that solutions also work for you?

NormanDunbar commented 7 years ago

Evening All,

I can confirm that changing from upload to program had no effect - I'd already tried that way back at the start of this problem.

I can also confirm that adding the "upload_flags = -e" option does work perfectly. I notice that the Arduino software does this anyway, so there's no problem in running an erase first.

Many thanks to all for this workaround. I appreciate the hard work, time and effort you all put in. Thanks.

Cheers, Norm.

stonehippo commented 7 years ago

@ivankravets Yes, using upload_flags = -e resolves the issue. I'm able to properly upload to via the AVR Tiny USB Programmer and to an Adafruit Trinket 3V with that flag in place in.

NormanDunbar commented 7 years ago

Evening All,

I'm happy that the workaround works and has resolved my problem. If the development team are happy too, we can close this issue.

Happy Christmas one and all, which applies to whichever religious, or otherwise, festival you celebrate at this time of year. ;-)

Cheers, Norm.

ivankravets commented 7 years ago

This is a bug. I've just fixed it. Please remove upload_flags = -e line from your config and run pio update command. All should work.

ivankravets commented 7 years ago

@NormanDunbar

Thanks! Merry Christmas! 🎄

stonehippo commented 7 years ago

@ivankravets looks like it's working well. After pio update, I was able to program the ATTiny85 multiple times via the Tiny AVR Programmer, using both upload and program targets, with or without upload_protocol = usbtiny specified in platformio.ini. (At least I was after I remembered that it is flaky with my USB hub and plugged directly into my Mac!)