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Adafruit Feather RP2040 and 2.9" eInk
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Adafruit Feather RP2040 and 2.9" eInk

by yo2ldk on Wed Sep 22, 2021 11:39 am

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Hi,
I have ThinkInk 2.9" 4 gray scale colour and Adafruit Feather RP2040 for it
buy it from Pimoroni, all is ok, sketch from example ThinkInk_gray4 written OK, but LCD not power up,
just the 4 level of colour as original . Any tips please ?
can be display with defects ?

Thank you in advance!
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yo2ldk
 
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Re: Adafruit Feather RP2040 and 2.9" eInk

by adafruit_support_carter on Wed Sep 22, 2021 4:57 pm

Try using these pin defines:
Code: Select all | TOGGLE FULL SIZE
#define EPD_DC      10 // can be any pin, but required!
#define EPD_CS      9  // can be any pin, but required!
#define EPD_BUSY    -1 // can set to -1 to not use a pin (will wait a fixed delay)
#define SRAM_CS     -1 // can set to -1 to not use a pin (uses a lot of RAM!)
#define EPD_RESET   -1 // can set to -1 and share with chip Reset (can't deep sleep)


The sketch also has a wait loop for the Serial Monitor. So it will not run until the Serial Monitor is opened. Be sure to do that also.
Screenshot from 2021-09-22 13-57-07.png
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Re: Adafruit Feather RP2040 and 2.9" eInk

by yo2ldk on Thu Sep 23, 2021 1:41 am

[quote="adafruit_support_carter"]Try using these pin defines:


Thank you for fast reply and help,

I read before and make it that modifications in the code,
I also saw in the example that the serial monitor opens and I assumed it was a connection with that, but I wasn't sure,
now you have confirmed it to me, thank you.
the problem is that I do not have any COM active like in that example, IDE is an older version 1.8.8,
because I use some old libraries for other projects, who not work with the new ones, like arduinojson who is 5.13.1.
what do I have to do to have a serial monitor as an example, must to install all the new versions ?

Thank you in advance!
Attachments
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yo2ldk
 
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Re: Adafruit Feather RP2040 and 2.9" eInk

by adafruit_support_carter on Thu Sep 23, 2021 1:20 pm

Those menu items look correct. Do they not open a Serial Monitor window?

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Re: Adafruit Feather RP2040 and 2.9" eInk

by yo2ldk on Thu Sep 23, 2021 1:30 pm

adafruit_support_carter wrote:Those menu items look correct. Do they not open a Serial Monitor window?



unfortunately no,
it say I not have a board on COM,
Port is inactive because not see RP2040,
even if this is in USB normally or in bootloader
in the previous post, first picture is from Adafruit page,
second image is my example, there is not that arrow up and "M"

yo2ldk
 
Posts: 8
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Re: Adafruit Feather RP2040 and 2.9" eInk

by adafruit_support_carter on Thu Sep 23, 2021 1:57 pm

Weird. Not sure why you are unable to get a com port to show up and a Serial Monitor won't open.

As another approach, you can just comment out the wait loop. Change these lines:
Code: Select all | TOGGLE FULL SIZE
  while (!Serial) {
    delay(10);
  }

to this:
Code: Select all | TOGGLE FULL SIZE
//  while (!Serial) {
//    delay(10);
//  }

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Re: Adafruit Feather RP2040 and 2.9" eInk

by yo2ldk on Thu Sep 23, 2021 3:28 pm

[quote="adafruit_support_carter"]Weird. Not sure why you are unable to get a com port to show up and a Serial Monitor won't open.

Thank you, Thank you !
It's alive :)
now I can start the job on my project

in time I need to find what is with serial port..
My best regards !

yo2ldk
 
Posts: 8
Joined: Sun Nov 29, 2015 8:11 am

Please be positive and constructive with your questions and comments.