树莓派的系统安装及分辨率设置

 树莓派系统安装

1.下载树莓派镜像文件

进入树莓派官网下载镜像，网址http://www.raspberrypi.org/downloads/，选择

RASPBIAN JESSIE LITE点击DOWNLOAD zip进行下载。

2.工具准备

（1）硬件：树莓派及电源线，SD卡（大于2G），SD卡读卡器，HDMI转VGA线，显示器（本人准备HP1280*1024分辨率显示器）

（2）软件：Win32 DiskI mager，sdformatter。

3.镜像烧写

（1）将下载的ZIP文件解压成为img格式，把SD卡插入读卡器并插入电脑USB，运行WIN32 DISKI MAGER点击文件夹选项选择解压的镜像，Device为选择SD卡的卷标，点击write进行写入镜像。

（2）如果写入失败，请下载SD卡低级格式化工具SDFORMATTER进行SD卡格式化，windows下的格式化属于高级格式化，打开后选择卷标后，点击option进行配置foamat size ADjustment为ON。点击fomat进行格式化。

4分辨率设置

如果此时将SD卡插入树莓派上电启动，显示器将不会亮屏。必须在windows下进入Sd卡根目录config。

以下为config.txt在1280*1024分辨率下的正确配置方式

# For more options and information see
# http://www.raspberrypi.org/documentation/configuration/config-txt.md
# Some settings may impact device functionality. See link above for details


# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1


# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1


# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
overscan_left=16
overscan_right=16
overscan_top=16
overscan_bottom=16


# uncomment to force a console size. By default it will be display's size minus
# overscan.
framebuffer_width=1280
framebuffer_height=1024


# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1


# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=35


# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
hdmi_drive=2


# uncomment to increase signal to HDMI, if you have interference, blanking, or
#no display
config_hdmi_boost=4


# uncomment for composite PAL
#sdtv_mode=2


#uncomment to overclock the arm. 700 MHz is the default.
arm_freq=800


# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=spi=on


# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi


# Additional overlays and parameters are documented /boot/overlays/README


# Enable audio (loads snd_bcm2835)
dtparam=audio=on

此时保存config.txt，将SD卡插入树莓派进行上电启动，此时树莓派屏幕亮起，启动正常。

以上即为树莓派系统的安装过程。