Difference between revisions of "CVBS"

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(H3 Linux-3.4 BSP 使能CVBS输出)
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[[CVBS/zh|查看中文]]
 
[[CVBS/zh|查看中文]]
  
===H3 Linux-3.4 BSP 使能CVBS输出===
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===Enable CVBS Output in H3 Linux-3.4 BSP===
对于H3 Linux-3.4系统映像,NanoPi M1 Plus / NanoPi M1 / NanoPi Duo2 支持配置为CVBS输出。由于HDMI / CVBS只能选择一路输出显示,而HDMI输出更通用一些,所以M1 Plus / M1默认是使能HDMI 禁止CVBS,而Duo2
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FriendlyElec's image for H3 Linux-3.4 works with the NanoPi M1 Plus / NanoPi M1 / NanoPi Duo2 and it supports CVBS output. This image supports either HDMI or CVBS output. For the NanoPi M1 Plus/M1 by default HDMI is enabled and CVBS is disabled. For the NanoPi Duo2 by default CVBS is enabled and HDMI is disabled.
由于没有HDMI 接口,所有默认是使能CVBS。
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参考下列操作可以自行手动为M1 Plus / M1 使能CVBS输出。
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Refer to the following steps to manually enable CVBS for The NanoPi M1 Plus / M1.
  
 
====参考文档====
 
====参考文档====

Revision as of 03:09, 19 December 2018

查看中文

1 Enable CVBS Output in H3 Linux-3.4 BSP

FriendlyElec's image for H3 Linux-3.4 works with the NanoPi M1 Plus / NanoPi M1 / NanoPi Duo2 and it supports CVBS output. This image supports either HDMI or CVBS output. For the NanoPi M1 Plus/M1 by default HDMI is enabled and CVBS is disabled. For the NanoPi Duo2 by default CVBS is enabled and HDMI is disabled.

Refer to the following steps to manually enable CVBS for The NanoPi M1 Plus / M1.

1.1 参考文档

$ git clone https://github.com/friendlyarm/h3_lichee.git lichee --depth 1
$ ls lichee/doc/H3 sys_config.fex使用配置说明V1.1.pdf。

1.2 修改sys_config

以NanoPi M1 Plus 为例,NanoPi M1 的修改操作也是类似的。
M1 Plus的sys_config文件路径如下:

$ ls lichee/tools/pack/chips/sun8iw7p1/configs/nanopi-h3/board/sys_config_nanopi-m1-plus.fex

禁止HDMI 并且使能CVBS:

[disp_init]
disp_init_enable = 1
disp_mode = 1
screen0_output_type = 3
screen0_output_mode = 5
screen1_output_type = 2
screen1_output_mode = 14
fb0_format = 0
fb0_width = 0
fb0_height = 0
fb1_format = 0
fb1_width = 0
fb1_height = 0
 
[hdmi_para]
hdmi_used = 0
hdmi_power = "vcc-hdmi-18"
 
[tv_para]
tv_used = 1
tv_dac_used = 1
tv_dac_src0 = 0

1.3 编译更新

编译lichee:

$ cd lichee/fa_tools
$ ./build.sh -b nanopi-m1-plus -p linux -t all

更新SD卡:

$ cd lichee/fa_tools
$ ./fuse.sh -d /dev/sdX -p linux -t u-boot

/dev/sdX 请替换为实际的TF卡设备文件名。