2013年3月31日 星期日

[RPi] 在Raspberry Pi上使用HDMI轉VGA接頭

話說家中總是有老舊螢幕還是使用VGA介面(D-Sub),那就需要買一個HDMI轉VGA的接頭,再修改Raspberry Pi的/boot/config就可以使用了

簡單說明一定要改的地方有hdmi_drive=2表示強制從HDMI輸出,hdmi_group=2和hdmi_mode=16這兩個參數就視螢幕的解析度調整了

詳細參數可參考官網
# 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=1024
#framebuffer_height=768

# 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=16

# 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=1000

# for more options see http://elinux.org/RPi_config.txt
gpu_mem=64
core_freq=500
sdram_freq=600
over_voltage=6