Epaper and CubeCell HTCC AB-01 board in Arduino

#1

I’m trying to use a epaper screen with the HTCC AB-01 CubeCell board in Arduino, with an eink screen, driven by GxEPD library.

My problem is that I got a SPI problem, probably due to the fact that the board uses SPI to also communicate with its LoRa module (see log at the end of my message).

How may I fix that to be able to use the eink screen on the module (And LoRa with it in the future)?

Eink screen is wired through:
CS = GPIO3
DC = GPIO5
RST = GPIO4
BUSY = GPIO0
DIN = GPIO1
CLK = GPIO2

Is this wiring correct?

Thanks for your help.

Arduino: 1.8.13 (Linux), Board: "CubeCell-Board, REGION_EU868, CLASS_A, OTAA, ON, UNCONFIRMED, OFF, ON, ACTIVE, None"
 [...]
/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino.ino.cpp -o /tmp/arduino_build_180193/sketch/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino.ino.cpp.o
    In file included from /home/nicolas/Arduino/libraries/GxEPD/src/GxIO/GxIO_SPI/GxIO_SPI.h:8,
                     from /home/nicolas/Arduino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino.ino:7:
    /home/nicolas/.arduino15/packages/CubeCell/hardware/CubeCell/0.0.5/cores/asr650x/SPI/SPI.h:29:7: error: redefinition of 'class SPIClass'
     class SPIClass
           ^~~~~~~~
    In file included from /home/nicolas/Arduino/libraries/GxEPD/src/GxEPD.h:17,
                     from /home/nicolas/Arduino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino.ino:3:
    /home/nicolas/.arduino15/packages/CubeCell/hardware/CubeCell/0.0.5/cores/asr650x/SPI/SPI.h:29:7: note: previous definition of 'class SPIClass'
     class SPIClass
           ^~~~~~~~
    In file included from /home/nicolas/Arduino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino/GxEPD_HelloWorld_cubecell_ecran_eink_JP.ino.ino:7:
    /home/nicolas/Arduino/libraries/GxEPD/src/GxIO/GxIO_SPI/GxIO_SPI.h:39:5: error: 'SPISettings' does not name a type
         SPISettings _spi_settings;
         ^~~~~~~~~~~
    Using library GxEPD at version 3.1.0 in folder: /home/nicolas/Arduino/libraries/GxEPD 
    Using library Adafruit_GFX_Library at version 1.10.1 in folder: /home/nicolas/Arduino/libraries/Adafruit_GFX_Library 
    Using library Adafruit_BusIO at version 1.5.0 in folder: /home/nicolas/Arduino/libraries/Adafruit_BusIO 
    exit status 1
    Error compiling for board CubeCell-Board.
GDEW042C37 display issue on Heltec board
#2

hi,

we will update e-ink code for CubeCell recently.

#3

Hi,
Where and when will I be able to find it?

Thanks.

#4

hi，

About 10 days later, we will update on github.

#5

hi,

we have updated the code in github.

#6

Hi @jasonXu thanks a lot. Is this compatible with a simultaneous use of the LoRa chip? My objective is to retrieve data from LoRa and display it on the eink screen.

#7

sure, Use lora to transfer data first, and then use the e-ink screen. There is no problem

#8

Okay for pin 16 (Vext Control ?), but which ones are 22, 18, 23 and 5?

Capture%20d%E2%80%99%C3%A9cran%20de%202020-10-12%2012-04-57
Capture d’écran de 2020-10-12 12-04-57.jpg1742×873 328 KB

#9

hi,

please refer these:

DEPG0290BxS75AFxX_BW epd290bw(GPIO1, GPIO2, GPIO3, GPIO5, UNDEFINED, SPI_NUM_0, FREQUENCY);//reset_pin, dc_pin, cs_pin, busy_pin, clk_pin, spi_num, frequency

#10

Hi kalon33
I also have planned to download lora data using AB-01 and display on a eink Display. Were you able to get it work?
Best regards, Ruedi

#11

Hi Ruedi,

No, I haven’t been able to make it work yet. But I didn’t had much time to spend on it in the last months unfortunately.

Did you have found a solution for you?

Best regards.

#12

Hello

Anyone managed connect AD01 to e-ink ?
I dont know even how to wire them correctly,

Can someone let me knoow how to wire ? it

There are pin on E-ink
Busy----?
CLK----?
CS-----?
SDI----?
DC-----?
GND—GND
VCC - VEXT

@kalon33 @Ruedi_68 maybe you Guys were managed to connect it correctly ?

#13

Hello,
I’m having the same problem now.
However, I have a BlackWhiteRed e-paper reader.
I can set the e-paper reader to a 3- or 4-line interface.
I assume it has to be 4.

As already stated, I want to send the data via Lora and then display it on the screen before the AB01 goes into deep sleep again.
Thanks

#14

I’ve got it working now.
Pinout is:
BUSY GPIO 05 33
RST GPIO01 6
DC GPIO02 7
CS GPIO03 8
CLK SCK 21/37
SPI MOSI 19/36

GND GND
VCC Vext or VDD

I hope this helps others.