hp printer usb otg android

As an Android technology home, USB OTG is what you must understand, so-called USB OTG is you can use the phone or tablet to charge, and the computer to transfer data from the Micro USB interface to connect other

following versions of JB3,If the value of Resource_overlay_support is generic ==>> modify the alps/mediatek/custom/[project]/resource_overlay/generic/ Frameworks/base/core/res/res/xml/storage_list.xmlIf the value of Resource_overlay_support is empty ==>> modify Alps/framework/base/core/res/res/xml/storage_list.xmlFor JB3 (inclusive) versions, the value of Resource_overlay_support can be configured as SD_IN_EX_OTG or SD_EX_OTG as needed, no need to modify the fileSD_IN_EX_OTG or SD_EX_OTG respec

First, check the HW schematic to verify that OTG functionality is supported (Vbus is power-up, iddig pin connection is correct)Second, if the HW confirms that the OTG feature is supported, turn on the USB OTG feature and implement the mount separately according to the following methods:How to turn on the

(Original works, reproduced please indicate the path of reprint)Recently on the MStar 786 platform, there is a need, that is, the USB OTG converted to a host USB drive.Start debugging, thought as long as the OTG configuration removed, that is, CONFIG_USB_MS_OTG shield off, but after compiling the burn, insert and dial

This article was reproduced from: http://blog.csdn.net/u013686019/article/details/50165059[HTML]View PlainCopy android:4.4.4 First, the problem analysisWhen the USB printer is plugged into an Android device, there is no printer node (/DEV/

Original: http://blog.csdn.net/johnwcheung/article/details/71576833Android under the device debugging, if the device provides a driver, according to the manufacturer's driver debugging can be, the device does not provide the driver, only in accordance with the common method of debugging.For Smart POS, cash registers, and other printing devices, how can the print function be implemented if the vendor does not provide a printing-related SDK? In fact, we can be based on the