全志h3 h5,全志h3处理器

echo 0 > /sys/devices/platform/gpio_sw.2/gpio_sw/PG13/data

vi android/vendor/tvd/packages/TvdSettings/src/com/android/settings/DisplayHdmi2Vga.java

 String output_status = SystemProperties.get("persist.sf.sw");
Log.v(TAG, "====================="+output_status);
 if ("1".equals(output_status)) {
 Gpio.writeGpio('g',13,1);//VGA
}
 if ("0".equals(output_status)) {
   Gpio.writeGpio('g',13,0);//HDMI
}