Cannot upload firmware to Arduino Uno board

azarubkin · June 25, 2018, 9:58pm

I’m running PIO v3.6.0a3, and I’m unable to upload firmware to Arduino Uno board. Here’s the output of upload command:

Configuring upload protocol...
AVAILABLE: arduino
CURRENT: upload_protocol = arduino
Looking for upload port...
Auto-detected: COM8
Uploading .pioenvs\uno\firmware.hex
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xdb
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xdb

and so on.

Resp changes from one attempt to another. It can show 0x5f, 0x7e, 0x6e, etc.

This is my platformio.ini file:

[env:uno]
platform = atmelavr
board = uno
framework = arduino
lib_deps = LiquidCrystal, StreamLib
board_build.f_cpu = 16000000L
build_flags = -DUSE_NETWORK

maxgerhardt · June 26, 2018, 8:40am

Does uploading work with the Arduino IDE? avrdude: stk500_recv(): programmer is not responding is sadly a very general error message for “something went wrong”, see uploading - "avrdude: stk500_getsync(): not in sync: resp=0x00," aka Some Dude Named Avr Won't Let Me Upload My Program - Arduino Stack Exchange

azarubkin · June 29, 2018, 9:43am

I’ve bought another Arduino Uno board and the uploading works with it. So I don’t think there’s any issue with Platformio.

peteichuk · November 3, 2019, 10:41pm

The issue is resolved by increasing the upload speed to 115200 in the upload_speed line in file platformio.ini

upload_speed = 57600

pfeerick · November 3, 2019, 11:43pm

Increasing or decreasing? The default is 115200 (and has been for at least three years), and the OP didn’t have a custom speed set in his platformio.ini as shown.

github.com

platformio/platform-atmelavr/blob/0c0972b8e5216cc4e87b4292dbe4fb66d58c8a83/boards/uno.json#L45


      
            "frameworks": [
              "arduino",
              "simba"
            ],
            "name": "Arduino Uno",
            "upload": {
              "maximum_ram_size": 2048,
              "maximum_size": 32256,
              "protocol": "arduino",
              "require_upload_port": true,
              "speed": 115200
            },
            "url": "https://www.arduino.cc/en/Main/ArduinoBoardUno",
            "vendor": "Arduino"
          }

maxgerhardt · November 4, 2019, 9:39am

If this worked have an old bootloader on your board that uses this baud rate, all the newer bootloaders use 115200. That was also a quiet subtle change and the reason the Arduino IDE now knows “ATMega328P” [115200 baud] and “ATMega328 (Old Bootloader)” [57600 baud] which was the previously named “ATMega328”. Still, this doesn’t cover the whole issue, as there could be a million other reasons the programmer is not responding.

elrhod · July 25, 2020, 11:40pm

This was the solution for me. Thanks!

n0ury · August 26, 2023, 7:56am

Now in 2023, I had the same issue with an old Arduino Duemilanove (Atmega328).
After reading this post, I couldn’t believe that it would work this way.
But it did, reducing upload speed to 57600 solved the issue!

somto · August 5, 2024, 3:09pm

Closing the serial monitor or plotter currently listen at that baud rate works.