Advantech ROM-5420 B1 handleiding
Handleiding
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ROM-5420 B1/B2 User Manual 42
If the panel has problems being activated, you may need to check the panel data-
sheet to configure the panel-related parameters. The LVDS video mode database is
stored in linux-3.0.35/drivers/video/mxc/ldb.c. You can add a new one for your LVDS
panel.
static struct fb_videomode ldb_modedb[] = {
{
"LDB-XGA", 60, 1024, 768, 15385,
220, 40,
21, 7,
60, 10,
0,
FB_VMODE_NONINTERLACED,
FB_MODE_IS_DETAILED,},
}
The definition of fb_videomode in linux-3.0.35/include/linux/fb.h:
The name field is optional. If you input this value, it can be used in U-Boot environ-
ment settings.
The refresh field is the screen refresh frame rate, such as 60Hz or 70Hz. The resolu-
tion can be filled in the xres & yres fields.
The pixel clock (pixclock) is equal to 10
12
/(Total horizontal line * Total vertical line *
DCLK). For example, the total horizontal line is 1344 DCLK, and total vertical number
is 806 horizontal lines. The DCLK frequency is 60 MHz. Therefore, we can get 10
12
/
(1344*806*60) = 15385.
The margin values can be seen as front porch & back porch.
The sync_len means pulse width.
The sync value indicates the sync polarity (low or high).
struct fb_videomode {
const char *name; (optional)
u32 refresh; (optional)
u32 xres;
u32 yres;
u32 pixclock;
u32 left_margin;
u32 right_margin;
u32 upper_margin;
u32 lower_margin;
u32 hsync_len;
u32 vsync_len;
u32 sync;
u32 vmode;
u32 flag;
};
Bekijk gratis de handleiding van Advantech ROM-5420 B1, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Advantech |
| Model | ROM-5420 B1 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14448 MB |
