Machine Control Wifi Access Point

Official Hardware Pro Solutions Portenta Machine Control
1

Hi,

I'm trying to use the Wifi Access for machine control and I keep on getting this error when uploading the sketch.

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image1565×900 52.8 KB

Sketch uses 292196 bytes (37%) of program storage space. Maximum is 786432 bytes.
Global variables use 69920 bytes (13%) of dynamic memory, leaving 453704 bytes for local variables. Maximum is 523624 bytes.
dWarning: Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release
Cannot open DFU device 2341:035b found on devnum 54 (LIBUSB_ERROR_NOT_FOUND)
No DFU capable USB device available
fu-util 0.10-dev

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Failed uploading: uploading error: exit status 74

2

Hi,

I solve the same problem by doing the following:

1- select a standard example from the portenta machine control library " let us say Digital outputs example".

2- press the reset button on the board 2-3 times.

3- upload the code.

Done! The code will be work fine and uploaded

I know that it maybe make no sense when the code is right but this problem happened with me when the code is not 100% correctly written although it complicated.

So after you test your portenta with the standard examples try to write your wifi code a Little by little until it complicated the hole code without any problem that what worked for me.

You can try to use different usb port usb2.0 instead of usb 3 as well
Note: i am using Arduino Mbed OS Portenta Boards 3.5.4v.

Best regards
Mohannad