can't upload with USBTinyIsp

USB AVR Programmer and SPI interface. Adafruit's USBtinyISP.

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sekramer10
 
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Joined: Wed Oct 28, 2015 12:42 am

can't upload with USBTinyIsp

Post by sekramer10 »

I have a USBTinyISP programmer from AF that I got several years ago and am trying to get working now. I had trouble with it initially but I thought I would try again.

I ran the avrdude command line test from the setup guide and got the expected responses, when wired to an ATTINY841 chip.

Now when I try to program it with a blink sketch from Arduino IDE I get the error:

Code: Select all

avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified.
Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
But if I do the Burn Bootloader option from the IDE It says it is successful. One time it said it was not successful so I think it's doing something right, the red led came on for about 2 seconds.

The device is listed on Device manager (Win10) as USBTIny with driver ver: 1.2.6.0

I am using the ATTINYCore core by Spence Konde. I have Arduino IDE ver: 1.8.12.

It is trying to program through COM port 3, which is a port I usually use with the AF FTDI Serial TTL-232 USB Cable. As a matter of fact if I plug in this cable it tries to program through it (with nothing connected to it but the red Tx led blinks periodically).

I tried selecting the USBTinyISP programmer option, and the 2 other USBTinyISP programmer options listed in ATTINYCore (FAST, SLOW). All had the same response.

Can you please help me get my USBTinyISP programmer working?

Thanks!

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sekramer10
 
Posts: 185
Joined: Wed Oct 28, 2015 12:42 am

Re: can't upload with USBTinyIsp

Post by sekramer10 »

Well I figured out you have to use the "Upload using Programmer" option under the sketch menu to use the USBtinyISP for anyone that ever has this problem in the future.

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richjteel
 
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Re: can't upload with USBTinyIsp

Post by richjteel »

sekramer10, I wanted to give you a thumbs up as I have been trying to figure this out. I just tried it out and it works. Too bad I did not see this earlier as it may have saved me from chasing my tail.

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