On this post I will present same of my experience working with NX Graphics Subsystem. For this I created a new folder which is called cmngraphic on apps->exemples where I will test some graphics functions used on NX. For the moment I only tested same functions, but I will try further to update this post with more functions as I progress. I create a patch for the people that what to test the demo which can be downloaded on the bottom of the page.

 The functions that I have tested already are:

  • nx_drawcircle()
  • nx_fillcircle()
  • nx_fill()
  • nx_drawline()
  • nx_bitmap()

You can watch the video here.

In order to display an image I used nx_bitmap()function. To create an image that will be displayed on Nokia 3310 lcd using nx_bitmap() I proceeded the following steps :

  1. create a image in mode indexed in GIMP
  2. save the image in BMP format
  3. load the image in LCDAsistant
  4. select Byte orintation to Horizontal
  5. save the image

Note : It is very import that the area where the image will by displayed to be less or equal that the size image. If not the image will not be displayed !

 A video demonstration.

Here is the patch for nuttx-7.22 directory and for apps-7.22 directory.

You can test the modified patches this way:

Cloning:

$ git clone https://bitbucket.org/nuttx/nuttx
$ git clone https://bitbucket.org/nuttx/apps

Applying patches:

$ cd apps
$ git checkout nuttx-7.22
$ patch -p1 < ~/Desktop/cmn_app.patch
$ cd ..
$ cd nuttx
$ git checkout nuttx-7.22
$ patch -p1 < ~/Desktop/cmn_nuttx.patch

Configuring and Compiling:

$ cd tools/
$ ./configure.sh nucleo-l476rg/lcd
$ cd ..
$ make
Categories: NuttX

5 Comments

Alan C. Assis · 30/10/2017 at 6:56 pm

Hi Mihail,

You did a great tutorial! Congratulations!

Looking this Nokia display I recall the games that came with Nokia 3310. Maybe you get the inspiration and do the Snake game using the Gesture sensor APDS-9960! It should be a nice hack for the Hackaday site 😉

    CMN_Lab · 30/10/2017 at 9:43 pm

    Hi Alan,
    Not a bad idea at all 🙂
    Just for fun I will try to make a menu (like the old nokia menu) that will control RGB, PWM, ADC etc…, and why not a little game like Snake as you said.
    Thank you,
    Mihail

Alan C. Assis · 01/11/2017 at 2:50 pm

Hi Mihail!

Yes, creating display menus will be very interesting! You can use a rotary encoder to select options for example.

It will be amazing! I’m looking forward to see it working!

I am missing some visual IDE to create NX graphic layouts, it could make things easy for people willing to create graphical applications.

BR,

Alan

Alan C. Assis · 28/04/2018 at 2:26 pm

Hi Mihail,

The “nxlines” is also a nice example to run on Nokia 3110 display.

Unfortunately the default setting doesn’t work, but with these changes I got it working:

[*] NX graphics lines example
(0) Graphics Plane
(0) Graphics Device Number
[ ] Use default colors
(0x00) Background Color
(2) Line Width
(0x01) Line Color
(1) Border Width
(0x01) Border Color
(0x00) Circle Color
(1) Bits Per Pixel
[ ] External Device Initialization

BR,

Alan

    CMN_Lab · 28/04/2018 at 2:29 pm

    Hi Alan,

    Good to know. Thank for info !

    Regards,
    Mihail

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