Nerdonic Exen Proto User manual

nerdonic.
Setup Guide - V1
Exen Proto
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Setup Guide - Changelog
V2 - Added common PC connection and ‘Unknown Device’ fixes

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Exen Proto - Pinout
A1 / PB08
Use the pin ID in the diagram above to refer to that pin in the Arduino IDE.
Each pin ID consists of 2 numbers, for example:
The first part (In this case = A1) is the pin ID to use in the Arduino IDE.
The second part (In this case = PB08) is the pins port number. In most cases
you wont need to use the pins port number, however in certain situations using
the port can be useful.
POWER
GND
DIGITAL
ANALOG
PWM
SERIAL
I2C
SPI
PIN ID
5V - MICRO USB
3.3 - 20V
3.3V
SCL / PA23
SDA / PA22
12 / PA19
11 / PA16 A3 / PA04
A2 / PB09
A1 / PB08
A0 / PA02
RESET
POWER LED PROGRAMMABLE LED
SWD HEADER
13 / PA17
3.3-20V INPUT
REGULATED TO 3.3V
3.3V INPUT OR
REGULATED 3.3V OUTPUT
10 / PA18
9 / PA07
8 / PA06
7 / PA21 2 / PA14
3 / PA09
4 / PA08
A4 / PA05
6 / PA20
RX
5 / PA15
TX
0 / PA11
1 / PA10
SOLDER PAD 13
13 / PA17

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Exen Proto - Setup
If you have not yet downloaded and installed the Arduino IDE to your computer you
can download it from the Arduino website here for your OS:
https://www.arduino.cc/en/Main/Software
It is recommended to download the latest version.
In this setup guide we are using version 1.8.1 of the Arduino IDE.
Open up the Arduino IDE and navigate to
Tools > Board > Boards Manager
Once the Arduino Board Manager window has opened, search for ‘Arduino SAMD’
and install the SAMD boards package or update if you already have the package
installed. After installation has finished close the window.
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Now that you have the SAMD Boards package installed you should see the newly
installed boards in the Arduino IDE boards menu.
To check the boards are correctly installed go to your Arduino IDE and navigate to
Tools > Board > Boards Manager
If you don’t see the boards like in the below screenshot you may need to restart your
Arduino IDE.
Select the board that says ‘Arduino/Genuino Zero (Native USB Port)’
You are now ready to program the Exen Proto!
Connect your Exen Proto via a USB cable to your computer and allow it time to
install any needed USB drivers (This should be automatic).
You can find a blink sketch made for the Exen Proto here:
nerdonic.com/pages/products/exen/proto/downloads/demo_blink.zip
Or use / create your own sketch.
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Once you have a sketch ready you need to upload it to the Exen Proto, this can be
done 2 ways using USB.
1) This method is if the Exen Proto is powered only by the USB port
A) Plug in the Exen Proto to your computer via USB
B) Select the port your Exen Proto is connected to in the Tools > Port menu.
C) Press upload to compile and upload your sketch, this first upload will fail
as the Exen Proto is in ‘normal’ mode. Once the sketch fails to upload the
Exen Proto will put its self into ‘Bootloader’ mode.
D) Unplug the Exen Proto from USB and re-connect the USB cable.
E) Select the new port the Exen Proto is connected to in the Tools > Port
menu.
F) Upload your sketch again and it will successfully upload to the Exen Proto,
reboot the exen Proto into ‘normal’ mode and start running your sketch.
2) This method is recommended to have external power or a USB data toggle
switch
A) Power the Exen Proto
B) Double click the reset button on the Exen Proto to go into ‘bootloader’
mode
C) Plug in the Exen Proto to your computer via USB
D) Select the port the Exen Proto is connected to in the Tools > Port menu.
F) Upload your sketch and it will successfully upload to the Exen Proto,
rebooting the Exen Proto into ‘normal’ mode and start running your sketch.
NOTES:
To output Serial to the Exen Protos USB port use SerialUSB as your command.
Examples:
1) SerialUSB.begin(115200);
2) SerialUSB.print("Hello World");
3) if(SerialUSB) {}
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This issue is a common issue with boards running the Arduino Zero bootloader.
1) Plug into a USB2.0 port (USB3.0 is known to have unstable drivers on some systrems).
2) Make sure the Arduino IDE is updated to the latest version, older versions of the
Arduino IDE can cause issues (May require a PC restart).
3) Uninstall the Arduino SAMD board in the boards manager and reinstall it
(May require a PC restart).
4) Make sure the usb cable works or try a dierent cable.
5) Apply external power to the Exen Mini using the power pins, double tap the reset
button to put the exen mini into bootloader mode and then apply the usb, if it shows
up on the PC then upload a sketch following the setup guide above.
If these fixes dont fix you’r issues please contact Nerdonic
‘Unknown Device’
Common Fixes