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Messages - BalajiNP

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OLEDs / NHD-2.23-12832UCB3 OLED & Values
« on: January 09, 2018, 06:32:57 AM »
Here, built-in Controller is: SSD1305. The driver parameters are:

- solomon,height: Height in pixel of the screen driven by the controller
- solomon,width: Width in pixel of the screen driven by the controller
- solomon,page-offset: Offset of pages (band of 8 pixels) that the screen is
    mapped to.
- solomon,com-seq: Display uses sequential COM pin configuration
  - solomon,com-lrremap: Display uses left-right COM pin remap
  - solomon,com-invdir: Display uses inverted COM pin scan direction
  - solomon,com-offset: Number of the COM pin wired to the first display line
  - solomon,prechargep1: Length of deselect period (phase 1) in clock cycles.
  - solomon,prechargep2: Length of precharge period (phase 2) in clock cycles.
                         This needs to be the higher, the higher the capacitance
                         of the OLED's pixels is

How to derive the above fields? Sample values:

solomon,height = <32>;
solomon,width = <128>;
solomon,page-offset = <0>;
solomon,com-lrremap = true;
solomon,com-invdir = true;
solomon,com-offset = <32>;

The other fields:

solomon,com-seq = false
solomon,prechargep1 = 2
solomon,prechargep2 = 2

are these values correct? Please review it.


OLEDs / Re: NHD-2.8-25664UCB2 display - Linux device driver
« on: January 08, 2018, 02:17:12 AM »
In Linux Kernel, the drivers are there. It supports the SSD1305, SSD1306, SSD1307 and SSD1309 controllers.

Have anyone used/tested this driver?

The driver path in kernel src: drivers/video/fbdev/ssd1307fb.c

Please provide your comments on this.


OLEDs / NHD-2.23-12832UCB3 & Bits per Pixel information
« on: January 08, 2018, 01:29:00 AM »
In display NHD-2.23-12832UCB3, built-in controller is: SSD1305. Here, number of bits per pixel? Need this information.

How to confirm this value?

OLEDs / NHD-2.8-25664UCB2 display - Linux device driver
« on: November 08, 2017, 04:51:31 AM »

We are going to use NHD-2.8-25664UCB2 display. Where can I get Linux device driver for this display?

Need to look for the details to port this device driver to our board.


OLEDs / NHD-2.8-25664UCB2 display in Nvidia Jetson Tx2 processor
« on: November 08, 2017, 02:23:21 AM »

Need to use the NHD-2.8-25664UCB2 display in Nvidia Jetson Tx2 processor. For example, if we select the serial interface connection, then need to connect this display to SPI Controller or any Display controller in Processor.

If we choose the parallel interface, then to which controller, we have to make the hardware connections.

Please provide the information for this.


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