如何将SPI LCD设置为ubuntu上的默认显示？ [英] How to set SPI LCD to be default display on ubuntu?

问题描述

我有一台2.2TFT-LCD和一块基于ARM的主板（nanopi-m1），上面有Ubuntu-server-16.04。我有一个名为NOTRO的帧缓冲驱动程序（https://github.com/notro/fbtft ）在内核上使用fbtft支持并通过以下命令使我的显示工作：

I have a 2.2" TFT-LCD and an ARM-based board(nanopi-m1) with Ubuntu-server-16.04 on it. I have a framebuffer driver named NOTRO(https://github.com/notro/fbtft) that uses fbtft support on kernel and makes my display work by this commands:

sudo modprobe fbtft_device custom name=fb_ili9341 gpios=reset:1,dc:201,led:6 speed=16000000 rotate=90 bgr=1

使用上述命令我的LCD开启并且我有一个空白的黑屏。然后我必须运行此命令才能拥有我的x-manager屏幕：

With above command my LCD turns on and I have a blank black screen. Then I must run this command to have my x-manager screen:

FRAMEBUFFER=/dev/fb8 startx

但是现在，我想改变我的Linux设置以在启动时自动执行这些命令。但我不知道如何？



我必须说我也安装了这些套餐：

But now, I like to change my Linux settings to do these commands automatically at startup. but I don't know how?

I must say I have installed these packages too:

xorg, xserver-xorg-video-fbdev, openbox

我的尝试：



我确实用我的内容将我的/boot.script.bin转换为custom.fex文件：

What I have tried:

I did convert my /boot.script.bin to custom.fex file with this content:

GNU nano 2.5.3              File: custom.fex                                  

[product]
version = "100"
machine = "FriendlyARM NanoPi M1"

[platform]
debug_mode = 1
eraseflag = 1
next_work = 2

[target]
boot_clock = 1008
storage_type = -1

[key_detect_en]
keyen_flag = 0

[fel_key]
fel_key_max = 7
fel_key_min = 2

然后我必须改变我想要启动的内容并再次将其转换为.bin文件。

我也找到了这个教程，但我害怕改错了！

Then I must change what I want to boot here and convert it to .bin file again.
Also I found this tutorial for that but I am afraid of changing it wrong!

 script.bin/fex file

The settings in the [disp_init] section of the script.bin/fex file define the display output enabled at boot.

An example configuration for HDMI:

[disp_init]
disp_init_enable = 1
disp_mode = 0
screen0_output_type = 3
screen0_output_mode = 4
fb0_framebuffer_num = 2
fb0_format = 10
fb0_pixel_sequence = 0
fb0_scaler_mode_enable = 0

    disp_mode selects single-screen output or different dual screen modes. Generally this is 0, which means use screen0 with fb0 (one screen).
    screen0_output_type = 3 means HDMI output.
    screen0_output_mode selects the video/monitor mode to use (resolution and refresh rate). See the table in the Fex guide.
    fb0_framebuffer_num selects the number of buffers for fb0, generally you need 2 or more for video acceleration or Mali (3D), 3 is better.
    fb0_format and fb0_pixel_sequence determine the pixel format in the framebuffer. The above example (values of 10 and 0) selects the most common variant of 32bpp truecolor (ARGB).
    fb0_scaler_mode_enable selects whether the scaler should be enabled. Enabling it does not really scale pixels, it configures the scaler to scale pixels 1-to-1 which can fix screen refresh-related problems at 1080p resolution. See the section below. 

Similar parameter are defined for screen1 (which is usually disabled in practice). 

推荐答案

请参阅永久性部分/ notro / fbtft / wiki>主页·notro / fbtft Wiki·GitHub [ ^ ]。



您必须使用 modprobe 配置文件自动加载模块，而不是手动使用 modeprobe 命令。



告诉Xorg使用该设备将 FRAMEBUFFER = 命令放入启动时执行的某个脚本中。或者创建一个Xorg配置文件（参见 Framebuffer使用·notro / fbtft Wiki·GitHub [ ^ ]）。



我不知道 nanopi 和Ubuntu为它构建。使用Raspberry Pi，您还可以使用设备树文件作为显示器，使其成为启动时的默认显示（启动消息显示在SPI显示屏上）。您可以检查 nanopi 是否也支持此功能。然后就不需要加载模块了。

See the section Make it permanent at Home · notro/fbtft Wiki · GitHub[^].

You have to load the module automatically using a modprobe configuration file instead of manually using the modeprobe command.

To tell Xorg to use the device put the FRAMEBUFFER= command into some script that is executed at startup. Alternatively create an Xorg configuration file (see Framebuffer use · notro/fbtft Wiki · GitHub[^]).

I don't know the nanopi and the Ubuntu build for it. With a Raspberry Pi you can also use a device tree file for your display making it the default display at startup (boot messages are shown on the SPI display). You may check if the nanopi supports this too. Then there is no need to load the module.

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