Teensy 3.2 cannot be programmed after first time, unless press reset button

[424778940z]

I'm using latest stable version platformio ide

This issue may caused by I set it to usb uart mode, and download script doesn't reboot it before program.

i did following change in this file: .atom\packages\platformio-ide\penv\Lib\site-packages\platformio\builder\scripts\teensy.py
start at: Line 68

before:

env.Append(
        UPLOADER=join(
            "$PIOPACKAGES_DIR", "tool-teensy", "teensy_post_compile"),
        UPLOADERFLAGS=[
            "-file=firmware",
            '-path="$BUILD_DIR"',
            '-tools="%s"' % join("$PIOPACKAGES_DIR", "tool-teensy")
        ],
        UPLOADHEXCMD='"$UPLOADER" $UPLOADERFLAGS'
    )

after:

env.Append(
        REBOTTER=join(
            "$PIOPACKAGES_DIR", "tool-teensy", "teensy_reboot"),
        UPLOADER=join(
            "$PIOPACKAGES_DIR", "tool-teensy", "teensy_post_compile"),
        UPLOADERFLAGS=[
            "-file=firmware",
            '-path="$BUILD_DIR"',
            '-tools="%s"' % join("$PIOPACKAGES_DIR", "tool-teensy")
        ],
        UPLOADHEXCMD='"$REBOTTER" & "$UPLOADER" $UPLOADERFLAGS'
    )

it solve this issue for now but will have a error because delay between restart and program is not enough
error msg: "Teensy Loader is currently busy with another operation (p). Please try again in a few seconds, or restart Teensy Loader."

[ivankravets]

@PaulStoffregen Could you explain upload scenario? Should we make "teensy_reboot" before uploading? Currently, Teensy CLI asks to press "Reset button...".

[424778940z]

@ivankravets It should reboot before program, because programming only can be done in bootloader mode.
however current official script do not reboot before program, that's why it can only success at the first time.

arduino ide reboot before program, it can success everytime.

[PaulStoffregen]

In Arduino, we run teensy_post_compile first, which sends a message to the (GUI-based) Teensy Loader to open the latest compiled file, and configure in auto mode. Then teensy_reboot is run, to send a request to the Teensy to reboot into bootloader mode. Because Teensy Loader is in auto mode, when the Teensy appears, it gets programmed by Teensy Loader.

If you're using the CLI instead of GUI, you probably want to run teensy_reboot first.

[424778940z]

@PaulStoffregen thanks for the information, current official script using GUI loader, but not reboot

[424778940z]

        REBOTTER=join(
            "$PIOPACKAGES_DIR", "tool-teensy", "teensy_reboot"),
        UPLOADER=join(
            "$PIOPACKAGES_DIR", "tool-teensy", "teensy_post_compile"),
        UPLOADERFLAGS=[
            "-file=firmware",
            '-path="$BUILD_DIR"',
            '-tools="%s"' % join("$PIOPACKAGES_DIR", "tool-teensy")
        ],
        UPLOADHEXCMD='"$UPLOADER" $UPLOADERFLAGS  & "$REBOTTER"'

This is the final code, works perfectly.

[ivankravets]

@424778940z by default PlatformIO uses Teensy Loader CLI. If you want to use Teensy Loader GUI, please place all files to ~/.platformio/packages/tool-teensy:

/Users/ikravets/.platformio/packages/tool-teensy
├── teensy.app
├── teensy_gateway
├── teensy_post_compile
├── teensy_reboot
└── teensy_restart

teensy_post_compile will call teensy_reboot automatically. We run the same comand as @PaulStoffregen does in Arduino IDE. See

Arduino IDE

"/Applications/Arduino.app/Contents/Java/hardware/tools/avr/..//teensy_post_compile" "-file=Blink.ino" "-path=/var/folders/nj/nt38kxwd2xxfl5l42np_w7qw0000gn/T/buildd5ae82e677127ac286f51de66781d807.tmp" "-tools=/Applications/Arduino.app/Contents/Java/hardware/tools/avr/../" "-board=TEENSY31"
Opening Teensy Loader...

PlatformIO

"/Users/ikravets/.platformio/packages/tool-teensy/teensy_post_compile" -file=firmware -path="/Volumes/SOFT/Projects/GitHub/platformio/origin/examples/wiring-blink/.pioenvs/teensy31" -tools="/Users/ikravets/.platformio/packages/tool-teensy"
Opening Teensy Loader...

[424778940z]

@ivankravets

em...that's strange. I install platformio IDE with touch any settings. it use GUI version by default ...
And teensy_post_compile never call teensy_reboot....

[ivankravets]

@424778940z Do you see teensy_loader_cli in ~/.platformio/packages/tool-teensy?

[424778940z]

yes, it is there

[ivankravets]

@424778940z Sorry, I've just remembered it... Teensy Loader CLI doesn't work on Windows 😞 See http://www.pjrc.com/teensy/loader_cli.html

You can ask @PaulStoffregen to add support in this repo https://github.com/PaulStoffregen/teensy_loader_cli

[ivankravets]

@PaulStoffregen we call teensy_post_compile for uploading... Should we call separately teensy_reboot? I don't see this call in Teensyduino IDE.

[424778940z]

@ivankravets PaulStoffregen is already answered above.

This issue is already solved by modify platformio script.

However, my way is a little bit lazy, just use & run them at one line.
Put them separately may looks better.

[ivankravets]

@424778940z I don't understand how does it work for you. Rebooter requires GUI to be run. In your case, you call Rebooter before Teensy GUI.

Ok, I'll implement it.

[424778940z]

@ivankravets
At the first time GUI start will looking for the ready board, then upload it and reset. This is works perfectly in platformio.

Problem is about second time upload, because GUI is already running, according to PaulStoffregen, it supposed to call teensy_post_compile fist tell GUI new file is ready, then call teensy_reboot reboot the hardware to bootloader mode allows GUI upload again.

In current platformio official code, it only call teensy_post_compile, but no reboot. Therefore GUI knows there is a new file ready, but the hardware is not in bootloader mode, GUI cannot upload, if people press reset button on the board at this time, it will uoload.