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serial port of the circuit playground express does not show
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serial port of the circuit playground express does not show

by ricardoon on Fri Apr 13, 2018 6:28 am

Hello people,

I bought a circuit playground express board and I was trying to upload some code to it. After changing the cables I was able to upload. However, some days after the serial port does not appear anymore. I am pretty sure it is the same cable I was using before and I can see the serial port if I use a flora instead.

How to solve that? any ideas?

I am using a mac and Arduino 1.8.5

ricardoon
 
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Re: serial port of the circuit playground express does not s

by adafruit_support_carter on Fri Apr 13, 2018 2:08 pm

Maybe the serial port just changed to a different location? What operating system are you using?

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Re: serial port of the circuit playground express does not s

by ricardoon on Sat Apr 14, 2018 9:13 am

Hey, thanks for your message.

I am using OS 10.13.4 MAC OS High Sierra.

ricardoon
 
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Re: serial port of the circuit playground express does not s

by tkinsman on Sat Apr 14, 2018 1:10 pm

I've had this before, and I do a lot of work with a CP classic.

For me, the most common reasons to not see the USB port are:
1. I have a power-only USB cable. The cable is intended for charging cell phones, but does not bother making the wire connections to transfer data.

2. The USB cable is bad. They are cheap and wear out if sat on, or pinched.

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Re: serial port of the circuit playground express does not s

by adafruit_support_carter on Mon Apr 16, 2018 10:49 am

Yes, a good USB cable is necessary.

Let's see if you can get the board into bootloader mode. Do a double press of the reset button as described here:
https://learn.adafruit.com/welcome-to-c ... bootloader
and see if you can get the folder named CPLAYBOOT to show up.

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Re: serial port of the circuit playground express does not s

by ricardoon on Thu Apr 19, 2018 4:38 am

hello,

yes. it does. I can see a folder called "CPLAYBOOT" and the leds goe green as described.

I guess that is good news, or?

ricardoon
 
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Re: serial port of the circuit playground express does not s

by adafruit_support_carter on Thu Apr 19, 2018 10:36 am

Yep. The boards not dead and we can recover quite easily.
* If you're using MakeCode, just drag a MakeCode generated UF2 file to CPLAYBOOT
* If you're using Arduino, just upload a sketch
* If you're using CircuitPython, follow these directions to reinstall:
https://learn.adafruit.com/welcome-to-c ... cuitpython

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Re: serial port of the circuit playground express does not s

by ricardoon on Thu Apr 19, 2018 10:59 am

great!

However i still do not understand somethings:

1. I am using Arduino. How can I upload something? the serial port still does not appear.

2. on the previous page it is written: "The board is now in bootloader mode! This is what we need to install or update CircuitPython.

Now find the file you downloaded. Drag that file to the BOOT drive on your computer." what is this file that the text is talking about? where can I download it?

I understood that the previous post was just to see if I can get into bootloader mode.

please clarify.

ricardoon
 
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Joined: Tue Jan 07, 2014 1:23 pm

Re: serial port of the circuit playground express does not s

by adafruit_support_carter on Thu Apr 19, 2018 11:08 am

1. I am using Arduino. How can I upload something? the serial port still does not appear.

Hmm. It should show up in bootloader mode. You're seeing nothing in the Arduino IDE under Tools -> Port... ?

2. on the previous page it is written...

This is only needed if you want to use CircuitPython. It is the file that you download in the step here:
https://learn.adafruit.com/welcome-to-c ... st-version

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Re: serial port of the circuit playground express does not s

by ricardoon on Mon Apr 23, 2018 6:16 am

it works!!!!

after I tried 2 times the serial port appeared!

I tried every day a couple of times to check if it is consistent now and it is.

Thank you very much!

ricardoon
 
Posts: 18
Joined: Tue Jan 07, 2014 1:23 pm

Re: serial port of the circuit playground express does not s

by adafruit_support_carter on Mon Apr 23, 2018 11:49 am

Cool. Glad it's working. Not sure what was going on, but maybe the CPX was in a non-Arduino mode and it just took a couple of tries to get the reset correct and get your sketch uploaded.

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Please be positive and constructive with your questions and comments.