Connect ST7789 TFT display with nrf52832 controller

[Harsh Bhatt]

Hello I am using ST7789 display . 

I test this display with arduino and its working fine.

Now in our product we used nrf52832 controller so how we integrate with our display.

Can you please help me for the supported library and code?

[runsiv]

Hi Harsh

Zephyr got a driver for your display module https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/build/dts/api/bindings/display/sitronix,st7789v.html#std-dtcompatible-sitronix-st7789v and an example project https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/drivers/display/README.html  I would recommend checking them out. 

Regards

Runar

[Harsh Bhatt]

Hi,

I check your urls but I think we misscommunication or I might be not understood.

I need the .c library for display. and please check the display url. becuse this some changes from others.

we need to operate this display from nrf52832 controller so for that I need your help.

Display:- https://www.smart-prototyping.com/1_3-inch-TFT-IPS-Display-Module-ST7789-SPI-240-240

Please tell me if you have any question.

[runsiv]

Hi,

You can build the same example for nRF52833. From what I can see your first link lookes like a ST7789V since is has the DC pin. 

"From the root of the zephyr repository
west build -b nrf52833dk_nrf52833 samples/subsys/display/lvgl -- -DSHIELD=st7789v_tl019fqv01
"
You can also for example view the driver at github https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/display/display_st7789v.c
https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/display/display_st7789v.h
You will also find it on a smiliar path in your zephyr folder

If the difference between ST7789 and ST7789V makes the code unsutible, you can at least use it to write your own driver

Regards
Runar

Regards
Runar

[Harsh Bhatt]

Thanks for this reply!

I have question that in for display zephyer liberary used mandatory?

Means without this we can't use display with nrf?

[runsiv]

Hi, 

If you don't want to use Zephyr I would rather try to find a driver made for the nRF5 SKD then try to port this. And you don't have to use this driver if you have another for Zephyr, that is up to you

Regards

Runar

[Harsh Bhatt]

Thanks for the information!!

So if you have any other driver rather than zephyr? 

[runsiv]

We are not the manufacturer of the display so we don't have any official driver for it. So my recommendation would be to check with the manufacturer. I found this thread from some years back when a customer used if with nRF5 SDK, however I don't know how big the effort would be to port the driver for Zephyr. 

It is also worth noting our statement regarding nrf5 vs NCS incase you are considering nRF5 SDK 

When to use the nRF5 SDK?

1. For nRF51 Series (Use nRF5 SDK v12.3.0 for nRF51 Series).
2. Your nRF52-based device is already based on the nRF5 SDK and you do not plan to support any Bluetooth LE features beyond version 5.

Is the nRF5 SDK deprecated?

No. The nRF5 SDK is not deprecated and it will be maintained for the foreseeable future, however, nRF5 SDK will not support new features beyond Bluetooth LE 5.

When to use the nRF Connect SDK?

1. For all new designs.
2. For the nRF91 Series and nRF53 Series devices.
3. For nRF52 Series devices that require Bluetooth LE features beyond version 5.

Regards

Runar