ch340g 芯片 在安卓上的使用問題 咨詢
chenliquan 發(fā)表于: 2016-06-13 16:19:18
1#

下載官方的apk demo， 插入ch340g的板子 系統(tǒng)會提示運行，這個時候后續(xù) 操作是正常的，包括打開、關閉和讀寫。 不正常的是：如果安卓重啟，再次運行demo的時候，注意板子沒有插入動作，這時候app就會報錯，請問有什么辦法可以解決這種情況呢？ 謝謝。

血色頑主 發(fā)表于: 2017-08-25 10:06:09
2#

問題同上：官方demo，USB一直插在安卓上，打開APP，報錯。查看日志為：

08-24 07:47:54.336: I/art(4208): Not late-enabling -Xcheck:jni (already on)
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.681: D/AndroidRuntime(4208): Shutting down VM
08-24 07:47:54.688: E/AndroidRuntime(4208): FATAL EXCEPTION: main
08-24 07:47:54.688: E/AndroidRuntime(4208): Process: com.example.c6zdh, PID: 4208
08-24 07:47:54.688: E/AndroidRuntime(4208): java.lang.RuntimeException: Unable to create application com.example.c6zdh.MyAppLication: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4521)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.access$1500(ActivityThread.java:144)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1339)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Handler.dispatchMessage(Handler.java:102)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Looper.loop(Looper.java:135)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.main(ActivityThread.java:5221)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Native Method)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Method.java:372)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
08-24 07:47:54.688: E/AndroidRuntime(4208): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.a(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.UartInit(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.initUSB(MyAppLication.java:62)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.onCreate(MyAppLication.java:31)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1011)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4518)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?... 9 more

TECH39 發(fā)表于: 2017-08-28 13:23:40
3#

? ? ? ? ? ? ? ? ? ? ? ? ? ?

問題同上：官方demo，USB一直插在安卓上，打開APP，報錯。查看日志為：

08-24 07:47:54.336: I/art(4208): Not late-enabling -Xcheck:jni (already on)
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.681: D/AndroidRuntime(4208): Shutting down VM
08-24 07:47:54.688: E/AndroidRuntime(4208): FATAL EXCEPTION: main
08-24 07:47:54.688: E/AndroidRuntime(4208): Process: com.example.c6zdh, PID: 4208
08-24 07:47:54.688: E/AndroidRuntime(4208): java.lang.RuntimeException: Unable to create application com.example.c6zdh.MyAppLication: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4521)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.access$1500(ActivityThread.java:144)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1339)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Handler.dispatchMessage(Handler.java:102)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Looper.loop(Looper.java:135)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.main(ActivityThread.java:5221)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Native Method)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Method.java:372)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
08-24 07:47:54.688: E/AndroidRuntime(4208): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.a(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.UartInit(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.initUSB(MyAppLication.java:62)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.onCreate(MyAppLication.java:31)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1011)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4518)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?... 9 more

? ? ? ? ? ? ? ? ? ? ? ?

您好：

????嘗試使用一下，如下鏈接中的APP，看下使用結(jié)果。

????CH341SER_ANDROID.ZIP下載頁面-江蘇沁恒股份有限公司

????http://www.findthetime.net/download/CH341SER_ANDROID_ZIP.html


血色頑主 發(fā)表于: 2017-09-06 10:30:00
4#

引用:

? ? ? ? ? ? ? ? ? ? ? ? ? ?

問題同上：官方demo，USB一直插在安卓上，打開APP，報錯。查看日志為：

08-24 07:47:54.336: I/art(4208): Not late-enabling -Xcheck:jni (already on)
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.677: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.678: D/CH34xAndroidDriver(4208): String.format not match
08-24 07:47:54.681: D/AndroidRuntime(4208): Shutting down VM
08-24 07:47:54.688: E/AndroidRuntime(4208): FATAL EXCEPTION: main
08-24 07:47:54.688: E/AndroidRuntime(4208): Process: com.example.c6zdh, PID: 4208
08-24 07:47:54.688: E/AndroidRuntime(4208): java.lang.RuntimeException: Unable to create application com.example.c6zdh.MyAppLication: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4521)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.access$1500(ActivityThread.java:144)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1339)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Handler.dispatchMessage(Handler.java:102)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.os.Looper.loop(Looper.java:135)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.main(ActivityThread.java:5221)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Native Method)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at java.lang.reflect.Method.invoke(Method.java:372)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
08-24 07:47:54.688: E/AndroidRuntime(4208): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDeviceConnection.controlTransfer(int, int, int, int, byte[], int, int)' on a null object reference
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.a(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at cn.wch.ch34xuartdriver.CH34xUARTDriver.UartInit(Unknown Source)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.initUSB(MyAppLication.java:62)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at com.example.c6zdh.MyAppLication.onCreate(MyAppLication.java:31)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1011)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4518)
08-24 07:47:54.688: E/AndroidRuntime(4208): ?... 9 more


? ? ? ? ? ? ? ? ? ? ? ?

?

您好：

????嘗試使用一下，如下鏈接中的APP，看下使用結(jié)果。

????CH341SER_ANDROID.ZIP下載頁面-江蘇沁恒股份有限公司

????http://www.findthetime.net/download/CH341SER_ANDROID_ZIP.html


?

使用官方的APP，重新插拔USB，發(fā)現(xiàn)一直彈出未授權權限。

?

TECH39 發(fā)表于: 2017-09-06 13:22:12
5#

有沒有更換過手機，如果一直不彈出權限，可能是當前系統(tǒng)沒有使能 usb host 造成的。

血色頑主 發(fā)表于: 2017-10-13 08:31:43
6#

有沒有更換過手機，如果一直不彈出權限，可能是當前系統(tǒng)沒有使能 usb host 造成的。

?

沒更換過，我們使用的是友善之臂的4412的開發(fā)板，問題是和LZ提到的一樣，重新開機后，USB必須要重新插拔一次才可以使用！

http://www.arm9.net/tiny4412.asp

血色頑主 發(fā)表于: 2017-10-13 09:28:13
7#

有沒有更換過手機，如果一直不彈出權限，可能是當前系統(tǒng)沒有使能 usb host 造成的。

?

Android系統(tǒng)支持usb host，我是這么確認支持的，外接無線鼠標和鍵盤，都OK可以使用

TECH39 發(fā)表于: 2017-10-13 13:29:24
8#

? ? ? ? ? ? ? ? ? ? ? ? ? ?


引用:

有沒有更換過手機，如果一直不彈出權限，可能是當前系統(tǒng)沒有使能 usb host 造成的。


?

Android系統(tǒng)支持usb host，我是這么確認支持的，外接無線鼠標和鍵盤，都OK可以使用

? ? ? ? ? ? ? ? ? ? ? ?

您好：

????這樣是只能確保支持OTG，也即USB主機功能，不能保證手機上的Host API support 功能打開，可以參考下列博客：http://blog.csdn.net/jazzsoldier/article/details/71097697


血色頑主 發(fā)表于: 2017-10-13 14:49:11
9#

我按照教程查看微信截圖_20171013150227.png

其中哪一條是可以證明的Host API support 功能打開，勞煩大神了

TECH39 發(fā)表于: 2017-10-14 09:33:19
10#

? ? ? ? ? ? ? ? ? ? ? ? ? ?

我按照教程查看微信截圖_20171013150227.png

其中哪一條是可以證明的Host API support 功能打開，勞煩大神了

? ? ? ? ? ? ? ? ? ? ? ?

使用步驟一推薦的APK：USB主機診斷，或者按照步驟二的說明：進入/system/lib ，查看是否有驅(qū)動 libusbhost.so

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