GFX example

RE: GFX example

ovrebekk — Fri, 25 Nov 2022 10:08:10 GMT

Good work, getting something to show on the display at all is an important step. Then at least you know the basic communication is working properly 🙂

Most likely something is wrong with the configuration of the display, such as the rotation, if the graphics is not ending up in the right place.

If the color is incorrect it is usually an issue if the color mode, which is different from display to display.

Best regards
Torbjørn

RE: GFX example

Marcos Tadeo — Thu, 24 Nov 2022 21:11:22 GMT

I did it

I changed output sck pin p1.0 to p1.10

i have a port problem in P1.0

now i need to fix this

i going to try it,

thanks and regards

RE: GFX example

Marcos Tadeo — Thu, 24 Nov 2022 18:30:13 GMT

Hello

Im sorry, in CLK there is activity , but is a low signal

i take the signal directly of nrf52 module , is this ok?

RE: GFX example

Marcos Tadeo — Thu, 24 Nov 2022 17:18:56 GMT

[quote userid="2116" url="~/f/nordic-q-a/94048/gfx-example/397316"]

Can you try to connect a scope or logic analyzer to the SCK, MOSI, DC and CS lines to see if you have any activity?

[/quote]

Yes I Checked the signals, and you right , I have a problem with CLK

I verified signals with a example in arduino and clk shows activity

CS or SS Signal

DC Signal

MOSI Signal

CLK no Signal no activity

devzone.nordicsemi.com/.../Datasheet_2D00_AR1716-_2800_1_2900_.pdf

thank and regards

RE: GFX example

ovrebekk — Thu, 24 Nov 2022 08:04:55 GMT

Can you try to connect a scope or logic analyzer to the SCK, MOSI, DC and CS lines to see if you have any activity?

Then you will quickly spot if everything is configured correctly on the nRF side, and if the various signals are connected to the right pins.

Are you able to include the datasheet as an attachment to this case?
I am not able to open the link (I am guessing you need to be signed in to open it).

If you download the PDF you can just drag drop it into your reply.

Best regards
Torbjørn

RE: GFX example

Marcos Tadeo — Tue, 22 Nov 2022 18:56:02 GMT

[quote userid="2116" url="~/f/nordic-q-a/94048/gfx-example/396620"]Why do you put a question mark next to the cs pin? [/quote]

because when i was using ssd1306 128x32 over SPI, the configuration

mosi ---> P1.6

clk ----> P1.0

[quote userid="2116" url="~/f/nordic-q-a/94048/gfx-example/396620"]When you say it doesn't work, you mean to say nothing is happening on the display?[/quote]

yes, the display no shows nothing

actualy

RES --- vdd

CS --- P1.9

blk --- cdd

i am using this generic module

I checked debug in main, i'm not sure if initialize the display(gfx_initialization())

in console dont shows a error

Display data sheet

thanks and regards ovrebekk

RE: GFX example

ovrebekk — Mon, 21 Nov 2022 11:26:55 GMT

Hi Marcos

When you say it doesn't work, you mean to say nothing is happening on the display?

If there is absolutely no response it is usually a sign of a connection error, yes.

Why do you put a question mark next to the cs pin?
Your display should have a chip select pin (some times called CSN), and if you haven't set this one correctly the SPI communication will fail.

Do you have a reference to the display you are using, so I can take a look at the specifics?

Also, could you provide a picture of your setup, showing how the display is connected to the nRF52?

Best regards
Torbjørn