ֻӵOTG
2015-01-28 18:09йֻԭ
ʲôOTGľһЩ豸ЩUSB豸ҪOTGӵֻݻ磨ֻOTGOn-The-Goдͬ豸ӵĽӿڡ2001귢ֻƽ塢豸ӡ豸Ļ
OTGUSB 2.0IJ淶ͨԴݹ豸ַʽOTGһֵԵͨżOTG豸һʱɽʹӻķʽ
ֱֻͨӵӡϴӡֻͨOTGUSBӿڵƶӲ̻U̻ʵִ浽̵Ĺܡ
ȻOTGʵãҲ죬Ϊʲôƽձֵ֧OTGֻܶͲ֧أԭȻAndroidϵͳײ㶼֧OTGģdzڿռ俼ǡӡСϵͳȣֻܶĻûܣرһЩеͶ˲Ʒ
ôAndroidֻ˵û취OTGˣ
ʵϣAndroidֻ֧OTGܶˣҪַ
15Vѹģ
֧OTGֻOTGһֻʱǿͨԴΪ豸ġ֧OTGܾܿ5Vѹģ顣
2.ɾؼϵͳ
ϵͳĿ¼µsystem/etc/vold.fstabļаһ鿪OTGܵĴ룬Щ̻ͨɾشOTGܡ
ȻôһOTGҪˡһӲ棬ͨܵ繺䱸DC5VԴOTGߣֻͬʱȡĵģ5Vѹģ顣
ֵԴOTGֲͷģһ߿ֻһͷӳ
ڶΣǿԽ´뿽ֻڴС
# usb otg diskdev_mount usbotg /mnt/usbotg auto /devices/platform/mt_usb /devices/platform/musbfsh_hdrc
OTGUSB 2.0IJ淶ͨԴݹ豸ַʽOTGһֵԵͨżOTG豸һʱɽʹӻķʽ
ֱֻͨӵӡϴӡֻͨOTGUSBӿڵƶӲ̻U̻ʵִ浽̵Ĺܡ
ȻOTGʵãҲ죬Ϊʲôƽձֵ֧OTGֻܶͲ֧أԭȻAndroidϵͳײ㶼֧OTGģdzڿռ俼ǡӡСϵͳȣֻܶĻûܣرһЩеͶ˲Ʒ
ôAndroidֻ˵û취OTGˣ
ʵϣAndroidֻ֧OTGܶˣҪַ
15Vѹģ
֧OTGֻOTGһֻʱǿͨԴΪ豸ġ֧OTGܾܿ5Vѹģ顣
2.ɾؼϵͳ
ϵͳĿ¼µsystem/etc/vold.fstabļаһ鿪OTGܵĴ룬Щ̻ͨɾشOTGܡ
ȻôһOTGҪˡһӲ棬ͨܵ繺䱸DC5VԴOTGߣֻͬʱȡĵģ5Vѹģ顣
ֵԴOTGֲͷģһ߿ֻһͷӳ
ڶΣǿԽ´뿽ֻڴС
# usb otg diskdev_mount usbotg /mnt/usbotg auto /devices/platform/mt_usb /devices/platform/musbfsh_hdrc
ͨROOTȨı༭λROOTȨ˵ɣsystem/etc/vold.fstabļͼ4ڴĩβһУдݣ˳ֻעʹĩ֮ҪһС
ݲԣʺϴƷAndroidֻоƬ졣
ĵַ:http://www.cnonline.org/2015/article/12045.html