rk3288 lvds TF卡修改屏参

2024-05-13 19:18

文章标签 修改 tf rk3288 lvds 屏参

本文主要是介绍rk3288 lvds TF卡修改屏参，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

1，，以宽视屏M215HGE-L21_-奇美21.5液晶显示屏为例说明修改屏参为题!! 奇美21.5寸规格书下载:

屏参文件dis.cfg，如下：

[display_param]
screen-type = 3;   //=2;为单8  =3；为双8  for  LVDS
lvds-format = 0;   //0=LVDS_VESA   1=LVDS_JEIDA  2=LVDS_XXX   3=LVDS_XX
out-face    = 0;
color-mode = 0;
clock-frequency = 148000000;
hactive = 1920;   //=x
vactive = 1080;    //=y
hback-porch = 180;
hfront-porch = 97;
vback-porch = 30;
vfront-porch = 12;
hsync-len = 3;
vsync-len = 3;
hsync-active = 0;
vsync-active = 0;
de-active = 0;
pixelclk-active = 0;
swap-rb = 0;
swap-rg = 0;
swap-gb = 0;
end//hback-porch + hfront-porch  =THB
//vback-porch + vfront-porch = TVB一下说明如何配置参数的！！！！！依据液晶屏规格书首先TF 建议使用4GB 以下的容量！！！！需要格式为FAT32
确保M320_PCB供电正常！，多拔插几次确保TF读取正常!只有在开机过程才能读取屏参!!!!!!修改dis.cfg 文件，，修改后放到TF卡里面上电开机就可以更改并保存屏参，，例如：/dou/dis.cfg在TF卡根目录下建文件夹“dou”在">dou文件夹里面放"dis.cfg"文件hback-porch + hfront-porch  =THBvback-porch + vfront-porch = TVBfps必须=60hz，或者=50HZfps=(clock)/((hactive +THB)*(vactive + TVB))=60fps =50HZ <= (clock-frequency)/{(hactive + hback-porch + hfront-porch + 3)*(vactive + vback-porch + vfront-porch + 3)} <= 60/*              lvds connect config       *                                        *      lvds-format = 0    lvds-format = 1     lvds-format = 2     lvds-format = 3
----------------------------------------------------------------------TX0     R0              R2              R2              R0TX1     R1              R3              R3              R1TX2     R2              R4              R4              R2
Y       TX3     R3              R5              R5              R3
0       TX4     R4              R6              R6              R4TX6     R5              R7              R7              R5      TX7     G0              G2              G2              G0
----------------------------------------------------------------------TX8     G1              G3              G3              G1TX9     G2              G4              G4              G2
Y       TX12    G3              G5              G5              G3
1       TX13    G4              G6              G6              G4TX14    G5              G7              G7              G5TX15    B0              B2              B2              B0TX18    B1              B3              B3              B1
----------------------------------------------------------------------TX19    B2              B4              B4              B2TX20    B3              B5              B5              B3TX21    B4              B6              B6              B4
Y       TX22    B5              B7              B7              B5
2       TX24    HSYNC           HSYNC           HSYNC           HSYNCTX25    VSYNC           VSYNC           VSYNC           VSYNCTX26    ENABLE          ENABLE          ENABLE          ENABLE
----------------------------------------------------------------------TX27    R6              R0              GND             GNDTX5     R7              R1              GND             GNDTX10    G6              G0              GND             GND
Y       TX11    G7              G1              GND             GND
3       TX16    B6              B0              GND             GNDTX17    B7              B1              GND             GNDTX23    RSVD            RSVD            RSVD            RSVD
----------------------------------------------------------------------
*/

2，，一下参考规格书修改屏参说明

3#注意屏电压问题!!!

4#屏参问题

hback-porch + hfront-porch =THB ==140X2 = 280

vback-porch + vfront-porch = TVB == 45

fps必须=60hz，或者=50HZ

fps=(clock)/((hactive +THB)*(vactive + TVB))=60

fps =50HZ <= (clock-frequency)/{(hactive + hback-porch + hfront-porch + 3)*(vactive + vback-porch + vfront-porch + 3)} <= 60

5# 屏模式问题

如果出现水彩！！！

lvds-format = 0; 或者lvds-format = 1;

5#奇葩奇美42,10BIT_LVDS

屏参如下：

[display_param]
screen-type = 3;
lvds-format = 0;
out-face = 0;
color-mode = 0;
clock-frequency = 148600000;
hactive = 1920;
vactive = 1080;
hback-porch = 210;
hfront-porch = 16;
vback-porch = 34;
vfront-porch = 16;
hsync-len = 22;
vsync-len = 4;
hsync-active = 1;
vsync-active = 1;
de-active = 0;
pixelclk-active = 0;
swap-rb = 0;
swap-rg = 0;
swap-gb = 0;
end

6#常规1920_1080——LVDS屏参

[display_param]
screen-type = 3;
lvds-format = 0;
out-face = 0;
color-mode = 0;
clock-frequency = 148000000;
hactive = 1920;
vactive = 1080;
hback-porch = 180;
hfront-porch = 97;
vback-porch = 30;
vfront-porch = 12;
hsync-len = 3;
vsync-len = 3;
hsync-active = 0;
vsync-active = 0;
de-active = 0;
pixelclk-active = 0;
swap-rb = 0;
swap-rg = 0;
swap-gb = 0;
end

7# 15寸夏普和三菱LVDS--1024_768 DE模式

[display_param]
screen-type = 2;
lvds-format = 2;
out-face = 0;
color-mode = 0;
clock-frequency = 58000000;
hactive = 1024;
vactive = 768;
hback-porch = 120; //320 /2 =160 OK
hfront-porch = 40;
vback-porch = 20;
vfront-porch = 9;
hsync-len = 3;
vsync-len = 3;
hsync-active = 0;
vsync-active = 0;
de-active = 0;
pixelclk-active = 0;
swap-rb = 0;
swap-rg = 0;
swap-gb = 0;
end

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