Comments on: HOWTO: Write a display driver for SEGGER emWin https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/ Electronics, Computers at leisure time Fri, 10 Mar 2023 03:45:45 +0000 hourly 1 https://wordpress.org/?v=6.1.1 By: CM https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-4051 Fri, 10 Mar 2023 03:45:45 +0000 https://www.ba0sh1.com/?p=826#comment-4051 Hi,

Is there a driver for RA8877 with 4 wire SPI interface for emWIn?
Any help on this is highly appreciated.

]]> By: meera shah https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-135 Wed, 14 Feb 2018 06:22:38 +0000 https://www.ba0sh1.com/?p=826#comment-135 Has anybody made drivers for SSD1306 for emwin? Document says that they have added GUIDRV_SPage for SSD1306 but no source available as well as not in Binary. If anyone knows about this please share it with me.

]]> By: abi https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-134 Sat, 24 Dec 2016 02:47:24 +0000 https://www.ba0sh1.com/?p=826#comment-134 How much memory is sufficient memory?
I have 160k RAM , transparent text is displayed but changing transparent text like time, or numbers or a rolling text display is not able to erase background before drawing new one.

]]> By: Marcos_V https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-133 Tue, 13 Sep 2016 14:59:49 +0000 https://www.ba0sh1.com/?p=826#comment-133 In reply to Marcellus.

Hi Marcellus! To do this patch, did you use PortAPI.pfWrite16 functions? How did you disassemble the word in 3 bytes into your Write Data command wthout affect another configurations data commands?
Thank you so much!

]]> By: Baoshi https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-132 Mon, 08 Aug 2016 00:05:51 +0000 https://www.ba0sh1.com/?p=826#comment-132 Hello, there’re two things in connection with transparency, read back and memory. You can try write some texts on top of a color block to check if read back is working (otherwise the text will look like on black background). For memory, check the amount of memory configured in GUIConf. For many of the small MCUs because we cannot allocate too much memory to emWin, transparency is not possible.

]]> By: Giovanni https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-131 Sat, 06 Aug 2016 14:38:49 +0000 https://www.ba0sh1.com/?p=826#comment-131 Hi all, I have a problem with SSD2119. I have a working porting of the driver but I’m not able to use alpha. Every time I set alpha and then I use some drawing function the application crash. Same behaviour if I try to display a png with transparency. Any idea?

]]> By: Constantine https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-130 Tue, 19 Jul 2016 00:51:53 +0000 https://www.ba0sh1.com/?p=826#comment-130 I have similar article for F7:
http://microelk.azurewebsites.net/

]]> By: Gu https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-129 Thu, 21 May 2015 19:46:32 +0000 https://www.ba0sh1.com/?p=826#comment-129 Great Post! It helped me a lot with HX8352B. If you have a HX8352B model use this pseudo-function to write a pixel on the screen:

void LCD_XY(uint16 x, uint16 y, uint16 cor)
{

Set_LCD_8B_REG(0x0002,HI8(x));
Set_LCD_8B_REG(0x0003,LO8(x));

Set_LCD_8B_REG(0x0004,HI8(x));
Set_LCD_8B_REG(0x0005,LO8(x));

Set_LCD_8B_REG(0x0006,HI8(y));
Set_LCD_8B_REG(0x0007,LO8(y));

Set_LCD_8B_REG(0x80,HI8(y));
Set_LCD_8B_REG(0x81,LO8(y));

Set_LCD_8B_REG(0x82,HI8(x));
Set_LCD_8B_REG(0x83,LO8(x));

// Write data
Set_LCD_8B_REG(0x0022,cor);

}

]]> By: Jupp https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-128 Sat, 09 May 2015 22:16:58 +0000 https://www.ba0sh1.com/?p=826#comment-128 I got the SSD1289 works now – thanks for the example and explain of the required function to Register them.

]]> By: Jupp https://ba0sh1.com/2014/01/30/write-a-display-driver-for-emwin/#comment-127 Mon, 23 Mar 2015 08:07:58 +0000 https://www.ba0sh1.com/?p=826#comment-127 does anyone had a working SSD1289 Driver available for me ? I had seen in the beginning of this Blog some discussion about it, but i could’t find an example or so for that.
I would like to use this small Display to build a messuring Instrument for displaying the “Standing Wave Ratio” of a Ham-Radio antenna.
Tnx Jupp

]]>