Topic: Failed to locate programming port.

This topic has 8 replies, 2 voices, and was last updated 3 years, 4 months ago by support.

Viewing 9 posts - 1 through 9 (of 9 total)

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December 11, 2020 at 16:23 #29661

jnanneng
Participant

VisualGDB version 5.5R4 (build 3920)

Clean installation. Attempting to flash to an Arduino Micro. Arduino IDE works just fine. VisualGDB reports error “Failed to locate programming port. Please check VisualGB diagnostics console.” Console output below.

How do I resolve this?

Initializing assemblies: 16 msec
Registering factories: 141 msec
Initializing VisualGDB 5.5.104.3920
Checking fonts/colors: 3753 msec
Level 2 initialization: 5008 msec
Performing a 1200 bps reset sequence on COM6…
Unexpected exception: —————— System.IO.IOException ——————
System.IO.IOException: The port ‘COM6’ does not exist.
at System.IO.Ports.InternalResources.WinIOError(Int32 errorCode, String str)
at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace)
at System.IO.Ports.SerialPort.Open()
at ev.g.a()
at ev.g.h(Boolean a)
at qv.b()
trace=[System.IO.Ports.InternalResources.WinIOError:89, System.IO.Ports.SerialStream..ctor:134, System.IO.Ports.SerialPort.Open:35, ev+g.a:134, ev+g.h:6, qv.b:0]

Performing a 1200 bps reset sequence on COM6…
Waiting for programming port to appear. Pre-reset ports: COM3, COM6
Post-reset ports (#0): COM3, COM6
Post-reset ports (#1): COM3, COM6
Post-reset ports (#2): COM3, COM6
Post-reset ports (#3): COM3, COM6
Post-reset ports (#4): COM3, COM6
Post-reset ports (#5): COM3, COM6
Post-reset ports (#6): COM3, COM6
Post-reset ports (#7): COM3, COM6
Post-reset ports (#8): COM3, COM6
Post-reset ports (#9): COM3, COM6
Post-reset ports (#10): COM3, COM6
Post-reset ports (#11): COM3, COM6
Post-reset ports (#12): COM3, COM6
Post-reset ports (#13): COM3, COM6
Post-reset ports (#14): COM3, COM6
Post-reset ports (#15): COM3, COM6
Post-reset ports (#16): COM3, COM6
Post-reset ports (#17): COM3, COM6
Post-reset ports (#18): COM3, COM6
Post-reset ports (#19): COM3, COM6
Post-reset ports (#20): COM3, COM6
Unexpected exception: —————— System.Exception ——————
System.Exception: Failed to locate programming port. Please check VisualGDB diagnostics console
at ev.g.a()
at ev.g.h(Boolean a)
at qv.b()
trace=[ev+g.a:494, ev+g.h:6, qv.b:0]

Performing a 1200 bps reset sequence on COM6…
Unexpected exception: —————— System.IO.IOException ——————
System.IO.IOException: The port ‘COM6’ does not exist.
at System.IO.Ports.InternalResources.WinIOError(Int32 errorCode, String str)
at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace)
at System.IO.Ports.SerialPort.Open()
at ev.g.a()
at ev.g.h(Boolean a)
at qv.b()
trace=[System.IO.Ports.InternalResources.WinIOError:89, System.IO.Ports.SerialStream..ctor:134, System.IO.Ports.SerialPort.Open:35, ev+g.a:134, ev+g.h:6, qv.b:0]

Performing a 1200 bps reset sequence on COM6…
Waiting for programming port to appear. Pre-reset ports: COM3, COM6
Post-reset ports (#0): COM3, COM6
Post-reset ports (#1): COM3, COM6
Post-reset ports (#2): COM3, COM6
Post-reset ports (#3): COM3, COM6
Post-reset ports (#4): COM3, COM6
Post-reset ports (#5): COM3, COM6
Post-reset ports (#6): COM3, COM6
Post-reset ports (#7): COM3, COM6
Post-reset ports (#8): COM3, COM6
Post-reset ports (#9): COM3, COM6
Post-reset ports (#10): COM3, COM6
Post-reset ports (#11): COM3, COM6
Post-reset ports (#12): COM3, COM6
Post-reset ports (#13): COM3, COM6
Post-reset ports (#14): COM3, COM6
Post-reset ports (#15): COM3, COM6
Post-reset ports (#16): COM3, COM6
Post-reset ports (#17): COM3, COM6
Post-reset ports (#18): COM3, COM6
Post-reset ports (#19): COM3, COM6
Post-reset ports (#20): COM3, COM6
Unexpected exception: —————— System.Exception ——————
System.Exception: Failed to locate programming port. Please check VisualGDB diagnostics console
at ev.g.a()
at ev.g.h(Boolean a)
at qv.b()
trace=[ev+g.a:494, ev+g.h:6, qv.b:0]

December 13, 2020 at 07:48 #29666

support
Keymaster

Hi,

It looks like your Arduino core requires an external reset sequence. I.e. it will pulse the DTR signal on COM6, but will then expect the actual programming port to appear as another COM port. VisualGDB determines this by analyzing the Arduino core parameters and might determine some settings incorrectly for your board.

Please try double-checking what happens if you program the board with the Arduino IDE. Does it mention COM6 in the logs? Does another COM port temporarily appear in Device Manager during the programming? Are there any command lines for any programming-related tools shown in the Arduino IDE log?

December 15, 2020 at 14:46 #29673

jnanneng
Participant

Device manager does show a swapping of ports when uploading the sketch from the Arduino IDE. Today was COM13 -> COM14 (bootloader) -> COM13.

When flashing from within Visual GDB that does not occur.

How do we fix this? (I’ve got 4 different boards and VisualGDB fails to flash any of them–currently regretting my purchase of VisualGDB)

December 15, 2020 at 15:04 #29674

jnanneng
Participant

Discovered that arduino has a web editor. Uploading a sketch from it displays more information in it than the arduino IDE. Attaching that info.

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December 15, 2020 at 15:07 #29676

support
Keymaster

Based on the logs you provided, VisualGDB and the Arduino tools use different COM ports (your latest log mentions COM4, VisualGDB log mentions COM6). Please double-check that you specify the same COM port in VisualGDB Project Properties as you use in the Arduino IDE.

December 15, 2020 at 15:27 #29677

jnanneng
Participant

Yes, I’ve been trying different things; different machines, different USB ports, etc…

The arduino tools all work as expected. VisualGDB 5.5R4 fails in all cases.

I was positive this used to work back when I purchased my VisualGDB license (but I’ve since built a new machine, etc…). Then I noticed that VisualGDB had an update posted on december 3rd, 2020. So I uninstalled that version and moved back to the one I likely was using… 5.4R12. And now VisualGDB flashes successfully.

Thus I presume there’s a software regression somewhere in the latest version of VisualGDB?

December 15, 2020 at 15:30 #29678

support
Keymaster

Trying different things at the same time almost always results in strange behavior, and it’s hard to say which of the multiple changed things caused it.

We can gladly investigate it further if you could gather the output from VisualGDB Diagnostics Console in v5.4 vs v5.5 using the same COM port. This will show what has changed and will help us pinpoint the cause.

December 15, 2020 at 15:37 #29679

jnanneng
Participant

Here’s the VisualGDB diagnostic output from 5.4 R12, same USB port, etc… that I had used with 5.5 R4 (and that log as above)

Performing a 1200 bps reset sequence on COM6…
Waiting for programming port to appear. Pre-reset ports: COM3, COM6
Post-reset ports (#0): COM3, COM6
Post-reset ports (#1): COM3
Post-reset ports (#2): COM7, COM3
Found new COM port: COM7
C:\Users\jnanneng\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17\bin\avrdude “-CC:\Users\jnanneng\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf” -patmega32u4 -cavr109 “-PCOM7” -b57600 -D “-Uflash:w:c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex:i”

Connecting to programmer: .
Connecting to programmer: .
Found programmer: Id = “CATERIN”; type = S
Found programmer: Id = “CATERIN”; type = S
Software Version = 1.0; No Hardware Version given.
Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.
Programmer supports buffered memory access with buffersize=128 bytes.

Programmer supports the following devices:
Programmer supports the following devices:
Device code: 0x44
Device code: 0x44

avrdude: AVR device initialized and ready to accept instructions
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% -0.00s
Reading | ################################################## | 100% -0.00s

avrdude: Device signature = 0x1e9587 (probably m32u4)
avrdude: Device signature = 0x1e9587 (probably m32u4)
avrdude: reading input file “c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex”
avrdude: reading input file “c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex”
avrdude: writing flash (4088 bytes):
avrdude: writing flash (4088 bytes):

Writing | ################################################## | 100% 0.32s
Writing | ################################################## | 100% 0.32s

avrdude: 4088 bytes of flash written
avrdude: 4088 bytes of flash written
avrdude: verifying flash memory against c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex:
avrdude: verifying flash memory against c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex:
avrdude: load data flash data from input file c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex:
avrdude: load data flash data from input file c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex:
avrdude: input file c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex contains 4088 bytes
avrdude: input file c:\projects\ArduinoProject6\Output\Arduino_Micro\Debug/ArduinoProject6.ino.hex contains 4088 bytes
avrdude: reading on-chip flash data:
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.04s
Reading | ################################################## | 100% 0.04s

avrdude: verifying …
avrdude: verifying …
avrdude: 4088 bytes of flash verified
avrdude: 4088 bytes of flash verified

avrdude done. Thank you.
avrdude done. Thank you.

December 15, 2020 at 17:29 #29680

support
Keymaster

Thanks, we have located the difference. We have indeed changed the Arduino reset logic to match the Arduino IDE more closely, as another user reported problems with Arduino Nano.

As we do not have the hardware to recheck it on our side, please try downloading and running the attached test project. Does it reset the board properly into the bootloader (with a different COM port)? If not, does removing everything between port.Open() and port.Close() result in a reset?

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