Difference between revisions of "Template:S5Pxx18-SPI-2.8TFT"

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(Created page with "===Under S5P4418 & Linux-3.4 Kernel=== Note: the following method only applies for the Matrix-2'8_SPI_Key_TFT-1512 model. To test a Matrix-2'8_SPI_Key_TFT-1706(silkscreen T28-...")
 
(→‎Under S5P4418 & Linux-3.4 Kernel)
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===Under S5P4418 & Linux-3.4 Kernel===
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===在S5P4418/S5P6818平台使用SPI 2.8寸屏===
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Note: the following method only applies for the Matrix-2'8_SPI_Key_TFT-1512 model. To test a Matrix-2'8_SPI_Key_TFT-1706(silkscreen T28-02 1706) you need to make changes in the S5P4418's kernel file /drivers/char/matrix_ads7846.c.
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<!---
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以下内容仅适用于Linux-4.4内核, 以NanoPi Fire3为例，开机后，在终端上执行以下命令初始化SPI 2.8寸屏，这些操作只需要执行一次：
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===Under H3 & Linux-3.4 Kernel/S5P4418 & Linux-3.4 Kernel===
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−
--->
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====Run Qt Programs on Ubuntu-Core====
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FriendlyElec's Ubuntu-Core supports Qt. Users can run a Qt application by following the steps below.<br>
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Boot Ubuntu-Core on a board and clone the Matrix code samples:
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<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
−
$ apt-get update && apt-get install git
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sudo mount /dev/mmcblk0p1 /boot
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$ git clone https://github.com/friendlyarm/matrix.git
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sudo apt-get update
 +
sudo apt-get install device-tree-compiler
 +
sudo fdtput /boot/s5p6818-nanopi3-rev05.dtb spi0/spidev@0 status -t s "disabled"
 +
sudo fdtget /boot/s5p6818-nanopi3-rev05.dtb spi0/spidev@0 status
 +
sudo fdtput /boot/s5p6818-nanopi3-rev05.dtb spi0/fbtft@0 status -t s "okay"
 +
sudo fdtget /boot/s5p6818-nanopi3-rev05.dtb spi0/fbtft@0 status
 +
sudo reboot
 
</syntaxhighlight>
 
</syntaxhighlight>
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After it is done a "matrix" directory will be generated.
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注意，在上述命令中，s5p6818-nanopi3-rev05.dtb是NanoPi Fire3开发板所用的内核dtb文件，其它开发板型号需要自已查看文件 /sys/devices/platform/board/info 中的信息来确定文件名，输入如下命令: <br />
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Compile and Run Qt Test Program:
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<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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cd matrix/demo/nanopi-status
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cat /sys/devices/platform/board/info
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./build.sh
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./run.sh /dev/fb-st7789s
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</syntaxhighlight>
 
</syntaxhighlight>
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The nanopi-status is a simple Qt program which shows system information. Here is what you expect to observe:<br>
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在NanoPi Fire3开发板上，info文件的内容如下: <br />
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[[File:st7789s-status.png|frameless|600px|st7789s-status]]<br>
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Hardware        : NANOPI3<br />
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The run.sh script will load TFT's driver and run the Qt program. After the driver is successfully loaded a device node /dev/fb-st7789s will be generated. You can check whether or not the driver is loaded successfully by running the following commands
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Revision        : 0005<br />
 +
Serial          : fa6818dba7110739<br />
 +
其中，Hardware字段是NANOPI3，Revision字段是0005，CPU是S5P6818，所以内核dtb文件名为 s5p6818-nanopi3-rev05.dtb。<br />
 +
<br />
 +
配置完dtb文件，重启开发板后，可以用lsmod命令检查下是否加载了fb_st7789v模块：
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
lsmod
 
lsmod
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Module                  Size  Used by
 
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fbtft_device          29235  0
 
 
</syntaxhighlight>
 
</syntaxhighlight>
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After the TFT's driver is loaded you can enable the TFT by running the following commands
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正常会输出如下内容： <br />
 +
Module                  Size  Used by<br />
 +
fb_st7789v              3315  0<br />
 +
fbtft                  31881  1 fb_st7789v<br />
 +
<br />
 +
以及用dmesg命令可以查看到SPI屏已经被初始化为fb1设备:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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cd matrix/demo/matrix-lcdtest
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dmesg | grep fb_st7789v
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make
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export LCDSET_FB_DEV=/dev/fb-st7789s
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./matrix-lcdtest
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</syntaxhighlight>
 
</syntaxhighlight>
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You will watch the display.
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正常会输出如下内容： <br />
 +
[    6.728000] fb_st7789v: module is from the staging directory, the quality is unknown, you have been warned.<br />
 +
[    6.908000] graphics fb1: fb_st7789v frame buffer, 320x240, 150 KiB video memory, 4 KiB buffer memory, fps=35, spi0.0 at 50 MHz<br />
 +
接下事的情况就比较简单，无论是运行Qt，还是X-Windows，只需要正确设置Framebuffer设备为fb1即可。
  
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====Display Debian GUI on 2.8"LCD====
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Boot your ARM board with Debian and and launch the Debian GUI by running the following commands:<br>
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====在2.8寸屏上运行Lubuntu桌面====
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After Debian is loaded clone the matrix code samples:
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在 lubuntu desktop系统里执行以下操作:
 +
首先删除armsoc的配置文件：
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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$ apt-get update && apt-get install git
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sudo rm -f /usr/share/X11/xorg.conf.d/20-armsoc.conf
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$ git clone https://github.com/friendlyarm/matrix.git
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</syntaxhighlight>
 
</syntaxhighlight>
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After it is done a "matrix" directory will be generated.
 
  
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For H3 based boards you need to change the X11 configuration file as follows:
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然后新建一个配置文件 /etc/X11/xorg.conf:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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$ vi /etc/X11/xorg.conf
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sudo vi /etc/X11/xorg.conf
 
</syntaxhighlight>
 
</syntaxhighlight>
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Change "/dev/fb0" to "/dev/fb-st7789s".
 
  
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Launch the Debian GUI by running the following commands:
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内容如下：
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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$ cd matrix/demo/nanopi-status/
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Section "Monitor"
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$ ./display-debian.sh /dev/fb-st7789s
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    Identifier          "Primary"
 +
    VendorName          "FriendlyARM"
 +
EndSection
 +
 
 +
Section "Device"
 +
    Identifier          "Primary"
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    Driver              "fbdev"
 +
    Option              "fbdev" "/dev/fb1"
 +
EndSection
 
</syntaxhighlight>
 
</syntaxhighlight>
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Calibrate the screen by following the four points' movement:<br>
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重启后可以看到图像: <br />
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[[File:fbtft-debian.png|frameless|600px|fbtft-debian]]
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[[File:s5pxx18-lubuntu-spi2.8tft.png|frameless|600px|s5pxx18-lubuntu-spi2.8tft.png]]
 +
目前暂时不支持触摸屏，可使用鼠标和键盘操作。
  
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After calibration is done you will see the following system information:
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====在2.8寸屏上运行Qt程序====
 +
在friendly-core系统终端里执行以下命令，运行一个Qt示例:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
−
Section "InputClass"
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. setqt5env
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        Identifier      "calibration"
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export QT_QPA_PLATFORM=linuxfb:fb=/dev/fb1
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        MatchProduct    "ADS7846 Touchscreen"
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export QT_QPA_EGLFS_TSLIB=1
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        Option  "Calibration"  "196 3825 3887 358"
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export QT_QPA_GENERIC_PLUGINS=tslib,evdevkeyboard
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        Option  "SwapAxes"      "0"
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$QTDIR/examples/widgets/widgets/tetrix/tetrix
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EndSection
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</syntaxhighlight>
 
</syntaxhighlight>
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Copy and paste the information to the "/usr/share/X11/xorg.conf.d/99-calibration.conf" file, save it and this will be used as your calibration data when you reboot your board.<br>
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Qt示例画面如下所示：<br />
 +
[[File:S5pxx18-friendlycore-spi2.8tft.png|frameless|600px|s5pxx18-lubuntu-spi2.8tft.png]]
 +
目前暂时不支持触摸屏，可使用鼠标和键盘操作。

Revision as of 11:31, 14 December 2017

1 在S5P4418/S5P6818平台使用SPI 2.8寸屏

以下内容仅适用于Linux-4.4内核, 以NanoPi Fire3为例，开机后，在终端上执行以下命令初始化SPI 2.8寸屏，这些操作只需要执行一次： 

sudo mount /dev/mmcblk0p1 /boot
sudo apt-get update
sudo apt-get install device-tree-compiler
sudo fdtput /boot/s5p6818-nanopi3-rev05.dtb spi0/spidev@0 status -t s "disabled"
sudo fdtget /boot/s5p6818-nanopi3-rev05.dtb spi0/spidev@0 status
sudo fdtput /boot/s5p6818-nanopi3-rev05.dtb spi0/fbtft@0 status -t s "okay"
sudo fdtget /boot/s5p6818-nanopi3-rev05.dtb spi0/fbtft@0 status
sudo reboot

注意，在上述命令中，s5p6818-nanopi3-rev05.dtb是NanoPi Fire3开发板所用的内核dtb文件，其它开发板型号需要自已查看文件 /sys/devices/platform/board/info 中的信息来确定文件名，输入如下命令: 

cat /sys/devices/platform/board/info

在NanoPi Fire3开发板上，info文件的内容如下:
Hardware  : NANOPI3
Revision  : 0005
Serial  : fa6818dba7110739
其中，Hardware字段是NANOPI3，Revision字段是0005，CPU是S5P6818，所以内核dtb文件名为 s5p6818-nanopi3-rev05.dtb。

配置完dtb文件，重启开发板后，可以用lsmod命令检查下是否加载了fb_st7789v模块： 

lsmod

正常会输出如下内容：
Module Size Used by
fb_st7789v 3315 0
fbtft 31881 1 fb_st7789v

以及用dmesg命令可以查看到SPI屏已经被初始化为fb1设备:

dmesg | grep fb_st7789v

正常会输出如下内容：
[ 6.728000] fb_st7789v: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.908000] graphics fb1: fb_st7789v frame buffer, 320x240, 150 KiB video memory, 4 KiB buffer memory, fps=35, spi0.0 at 50 MHz
接下事的情况就比较简单，无论是运行Qt，还是X-Windows，只需要正确设置Framebuffer设备为fb1即可。


1.1 在2.8寸屏上运行Lubuntu桌面

在 lubuntu desktop系统里执行以下操作: 首先删除armsoc的配置文件： 

sudo rm -f /usr/share/X11/xorg.conf.d/20-armsoc.conf

然后新建一个配置文件 /etc/X11/xorg.conf: 

sudo vi /etc/X11/xorg.conf

内容如下： 

Section "Monitor"
    Identifier          "Primary"
    VendorName          "FriendlyARM"
EndSection
 
Section "Device"
    Identifier          "Primary"
    Driver              "fbdev"
    Option              "fbdev" "/dev/fb1"
EndSection

重启后可以看到图像:
s5pxx18-lubuntu-spi2.8tft.png 目前暂时不支持触摸屏，可使用鼠标和键盘操作。

1.2 在2.8寸屏上运行Qt程序

在friendly-core系统终端里执行以下命令，运行一个Qt示例: 

. setqt5env
export QT_QPA_PLATFORM=linuxfb:fb=/dev/fb1
export QT_QPA_EGLFS_TSLIB=1
export QT_QPA_GENERIC_PLUGINS=tslib,evdevkeyboard
$QTDIR/examples/widgets/widgets/tetrix/tetrix

Qt示例画面如下所示：
s5pxx18-lubuntu-spi2.8tft.png 目前暂时不支持触摸屏，可使用鼠标和键盘操作。

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