Difference between revisions of "Hammer LCD 8bit Color STN"
Davydotcom (talk | contribs) |
Davydotcom (talk | contribs) |
||
| Line 1: | Line 1: | ||
This is a "HowTo" for the Panasonic EDMGRB8KJF ([[media:edmgrb8jf.pdf|Datasheet]]) available from [http://store.earthlcd.com/EDMGRB8KJF?sc=7&category=256 EarthLCD] to be used with the [[Hammer_Board|Hammer]] development module from [[TinCanTools]] | This is a "HowTo" for the Panasonic EDMGRB8KJF ([[media:edmgrb8jf.pdf|Datasheet]]) available from [http://store.earthlcd.com/EDMGRB8KJF?sc=7&category=256 EarthLCD] to be used with the [[Hammer_Board|Hammer]] development module from [[TinCanTools]] | ||
| + | NOTE: This screen is an 8-bit STN screen, however in order to use it on the S3C2410A Hammer 12-bit STN must be used. The last 4 bits are simply masked off. If you have intentions of using this screen for frameworks such as Qt4 or others please first verify that they have 12-bit color support. | ||
| + | ==Hardware== | ||
{|border="3" | {|border="3" | ||
|+Matching Pinouts | |+Matching Pinouts | ||
Revision as of 09:34, 8 December 2009
This is a "HowTo" for the Panasonic EDMGRB8KJF (Datasheet) available from EarthLCD to be used with the Hammer development module from TinCanTools
NOTE: This screen is an 8-bit STN screen, however in order to use it on the S3C2410A Hammer 12-bit STN must be used. The last 4 bits are simply masked off. If you have intentions of using this screen for frameworks such as Qt4 or others please first verify that they have 12-bit color support.
Hardware
| Pin Number | Hammer | Note | LCD | Pin Number |
|---|---|---|---|---|
| 16 | VM | Display On/Off | DISPON | 16 |
| 17 | VFRAME | LCD Vertical sync | FRM | 20 |
| 18 | VLINE | LCD Horizontal sync | LOAD | 14 |
| 19 | VCLK | LCD pixel clock | CP | 12 |
| 21 | LCD_VD0 | LCD data bit 0 | Data0 | 9 |
| 22 | LCD_VD1 | LCD data bit 1 | Data1 | 8 |
| 23 | LCD_VD2 | LCD data bit 2 | Data2 | 7 |
| 24 | LCD_VD3 | LCD data bit 3 | Data3 | 6 |
| 25 | LCD_VD4 | LCD data bit 4 | Data4 | 4 |
| 26 | LCD_VD5 | LCD data bit 5 | Data5 | 3 |
| 27 | LCD_VD6 | LCD data bit 6 | Data6 | 2 |
| 28 | LCD_VD7 | LCD data bit 7 | Data7 | 1 |
| +3.3V | VDD | 10 | ||
| +3.3V | VDD | 11 | ||
| +3.3V | VDD | 13 | ||
| Ground | VSS | 5 | ||
| Ground | VSS | 15 | ||
| Ground | VSS | 17 | ||
| Ground | VSS | 19 | ||
| Contrast +1.95V (+-0.8V) | VCON | 18 |
NOTE: VCON should be variable control to adjust contrast and the VDD should have separate power control, i.e. via a gpio
NOTE: This display also requires a backlight inverter (see datasheet for requirements)
Linux Kernel 2.6.29.6 Build Notes
In order to get this screen to work framebuffer support has to be built into your kernel.
cd hammer/source/linux-2.6.29.6 export ARCH=arm export CROSS_COMPILE=arm-linux-uclibc- make menuconfig
Device Drivers -> Graphics Support -> Support for frame buffer devices Inside this sub menu add: [*] Enable Video Mode Handling Helpers <*> S3C2410 LCD framebuffer support
Under Device Drivers -> Graphics Support -> Console display driver support ADD Framebuffer Console Support
NOTE: It is also a good idea to go ahead and add the boot logo.
The next step is to add the display settings to your mach-tct_hammer.c file in ./arch/arm/s3c2410
If you have questions about this file please see the linux documentation ( I will try to make a patch for this at a later date)
