設(shè)備管理器，USB由CH340驅(qū)動的端口有黃色感嘆號，點(diǎn)開顯示“由于 Windows 無法加載這個(gè)設(shè)備所需的驅(qū)動程序,導(dǎo)致這個(gè)設(shè)備工作異常。 (代碼 31)”，更新最新的CH340也是這樣，已經(jīng)試過很多次了?？淳A帖說看日志，可是我只是大學(xué)生非計(jì)算機(jī)專業(yè)的，看不懂，希望能有解答。以下是setupapi.dev.log文件的內(nèi)容。

[Device Install Log]
???? OS Version = 10.0.22000
???? Service Pack = 0.0
???? Suite = 0x0300
???? ProductType = 1
???? Architecture = amd64

[BeginLog]

[Boot Session: 2022/11/08 12:20:24.500]

>>>? [Driver Install (DrvSetupInstallDriver) - C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\amdafd\amdafd.inf]
>>>? Section start 2022/11/08 13:07:24.642
????? cmd: "C:\WINDOWS\sysnative\pnputil.exe"? /add-driver "C:\Windows\TempInst\is-7KEGP.tmp\driver\*.inf" /subdirs /install
???? dvs: Flags: 0x00000000
???? dvs: {Driver Setup Import Driver Package: C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\amdafd\amdafd.inf} 13:07:24.643
???? dvs:????? Driver Package:
???? dvs:?????????? Outcome??????? - Already Imported
???? dvs:?????????? Driver INF???? - amdafd.inf (oem139.inf)
???? dvs:?????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? dvs:?????????? Driver Version - 02/14/2020,20.10.0.1
???? dvs: {Driver Setup Import Driver Package - exit (0x00000000)} 13:07:24.663
???? dvs: {Driver Setup Update Device: PCI\VEN_1002&DEV_1637&SUBSYS_380217AA&REV_00\4&2495e73&0&0141} 13:07:24.676
???? utl:????? {Select Drivers - PCI\VEN_1002&DEV_1637&SUBSYS_380217AA&REV_00\4&2495e73&0&0141} 13:07:24.678
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Selected | Installed
???? utl:??????????????? Driver INF???? - oem139.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdafd.inf_amd64_0a20a9e3ea8a104a\amdafd.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 02/14/2020,20.10.0.1
???? utl:??????????????? Configuration? - PCI\VEN_1002&CC_040300 [amdafd_Install]
???? utl:??????????????? Driver Rank??? - 00FF2002
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked | Installed
???? utl:??????????????? Driver INF???? - oem139.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdafd.inf_amd64_0a20a9e3ea8a104a\amdafd.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 02/14/2020,20.10.0.1
???? utl:??????????????? Configuration? - PCI\VEN_1002&CC_0403
???? utl:??????????????? Driver Rank??? - 00FF2003
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - hdaudbus.inf (C:\WINDOWS\System32\DriverStore\FileRepository\hdaudbus.inf_amd64_8207ba80cf22e40a\hdaudbus.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 06/05/2021,10.0.22000.1
???? utl:??????????????? Configuration? - PCI\CC_0403 [HDAudio_Device.NT]
???? utl:??????????????? Driver Rank??? - 00FF2008
???? utl:??????????????? Signer Score?? - Inbox (0D000003)
???? utl:????? {Select Drivers - exit(0x00000000} 13:07:24.694
???? dvs:????? Device does not need an update.
!??? dvs:????? No better matching drivers found for device 'PCI\VEN_1002&DEV_1637&SUBSYS_380217AA&REV_00\4&2495e73&0&0141'.
???? dvs: {Driver Setup Update Device - exit(0x00000000)} 13:07:24.696
!??? dvs: No devices were updated.
<<<? Section end 2022/11/08 13:07:24.713
<<<? [Exit status: FAILURE(0x00000103)]


>>>? [Driver Install (DrvSetupInstallDriver) - C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\amdlog\amdlog.inf]
>>>? Section start 2022/11/08 13:07:24.714
????? cmd: "C:\WINDOWS\sysnative\pnputil.exe"? /add-driver "C:\Windows\TempInst\is-7KEGP.tmp\driver\*.inf" /subdirs /install
???? dvs: Flags: 0x00000000
???? dvs: {Driver Setup Import Driver Package: C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\amdlog\amdlog.inf} 13:07:24.715
???? dvs:????? Driver Package:
???? dvs:?????????? Outcome??????? - Already Imported
???? dvs:?????????? Driver INF???? - amdlog.inf (oem140.inf)
???? dvs:?????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? dvs:?????????? Driver Version - 10/13/2020,20.40.0.3
???? dvs: {Driver Setup Import Driver Package - exit (0x00000000)} 13:07:24.723
???? dvs: {Driver Setup Update Device: ROOT\AMDLOG\0000} 13:07:24.738
???? utl:????? {Select Drivers - ROOT\AMDLOG\0000} 13:07:24.739
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Selected | Installed
???? utl:??????????????? Driver INF???? - oem101.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdfendr.inf_amd64_3b89fa32321adaa0\amdfendr.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 11/30/2021,21.40.0.2
???? utl:??????????????? Configuration? - ROOT\AMDLOG [AMDFENDR_INSTALL]
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem7.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdfendr.inf_amd64_0e7269da096ae5f1\amdfendr.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 10/13/2020,20.40.0.3
???? utl:??????????????? Configuration? - ROOT\AMDLOG
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem105.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdfendr.inf_amd64_9c52cee6bd9e4fb5\amdfendr.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 06/04/2021,21.30.0.9
???? utl:??????????????? Configuration? - ROOT\AMDLOG
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem140.inf (C:\WINDOWS\System32\DriverStore\FileRepository\amdlog.inf_amd64_b99895d8da0312cc\amdlog.inf)
???? utl:??????????????? Class GUID???? - {4d36e97d-e325-11ce-bfc1-08002be10318}
???? utl:??????????????? Driver Version - 10/13/2020,20.40.0.3
???? utl:??????????????? Configuration? - ROOT\AMDLOG
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:????? {Select Drivers - exit(0x00000000} 13:07:24.757
???? dvs:????? Device does not need an update.
???? dvs:????? {Install Related Drivers} 13:07:24.758
???? dvs:????? {Install Related Drivers: exit(0x00000000)} 13:07:24.760
???? dvs: {Driver Setup Update Device - exit(0x00000000)} 13:07:24.760
<<<? Section end 2022/11/08 13:07:24.763
<<<? [Exit status: SUCCESS]


>>>? [Driver Install (DrvSetupInstallDriver) - C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\UWPPair\UWPPair.inf]
>>>? Section start 2022/11/08 13:07:24.766
????? cmd: "C:\WINDOWS\sysnative\pnputil.exe"? /add-driver "C:\Windows\TempInst\is-7KEGP.tmp\driver\*.inf" /subdirs /install
???? dvs: Flags: 0x00000000
???? dvs: {Driver Setup Import Driver Package: C:\Windows\TempInst\is-7KEGP.tmp\driver\Packages\Drivers\Display\WT6A_INF\UWPPair\UWPPair.inf} 13:07:24.766
???? dvs:????? Driver Package:
???? dvs:?????????? Outcome??????? - Already Imported
???? dvs:?????????? Driver INF???? - uwppair.inf (oem138.inf)
???? dvs:?????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? dvs:?????????? Driver Version - 12/19/2019,27.2010.0.0
???? dvs: {Driver Setup Import Driver Package - exit (0x00000000)} 13:07:24.775
???? dvs: {Driver Setup Update Device: SWD\DRIVERENUM\AMDUWP&5&8ba283f&0} 13:07:24.789
???? utl:????? {Select Drivers - SWD\DRIVERENUM\AMDUWP&5&8ba283f&0} 13:07:24.790
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Selected | Installed
???? utl:??????????????? Driver INF???? - oem106.inf (C:\WINDOWS\System32\DriverStore\FileRepository\uwppair.inf_amd64_cf9020acca077bb4\uwppair.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 07/01/2021,29.2140.0.0
???? utl:??????????????? Configuration? - SWC\VID1002&PID0001 [ExtendedGraphics.NT]
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem2.inf (C:\WINDOWS\System32\DriverStore\FileRepository\uwppair.inf_amd64_d03d7afce1ebc590\uwppair.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 06/19/2020,27.2040.0.0
???? utl:??????????????? Configuration? - SWC\VID1002&PID0001 [ExtendedGraphics.NT]
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem56.inf (C:\WINDOWS\System32\DriverStore\FileRepository\uwppair.inf_amd64_1b5e94bdabd8e16a\uwppair.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 10/15/2020,27.2050.0.0
???? utl:??????????????? Configuration? - SWC\VID1002&PID0001 [ExtendedGraphics.NT]
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem77.inf (C:\WINDOWS\System32\DriverStore\FileRepository\uwppair.inf_amd64_e7e0ecbc75ba62b2\uwppair.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 04/28/2021,29.2130.0.0
???? utl:??????????????? Configuration? - SWC\VID1002&PID0001 [ExtendedGraphics.NT]
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - oem138.inf (C:\WINDOWS\System32\DriverStore\FileRepository\uwppair.inf_amd64_3be9f121cdcdb967\uwppair.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 12/19/2019,27.2010.0.0
???? utl:??????????????? Configuration? - SWC\VID1002&PID0001
???? utl:??????????????? Driver Rank??? - 00FF0000
???? utl:??????????????? Signer Score?? - WHQL (0D000005)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - c_swcomponent.inf (C:\WINDOWS\System32\DriverStore\FileRepository\c_swcomponent.inf_amd64_064f0b6413e2d085\c_swcomponent.inf)
???? utl:??????????????? Class GUID???? - {5c4c3332-344d-483c-8739-259e934c9cc8}
???? utl:??????????????? Driver Version - 06/21/2006,10.0.22000.1
???? utl:??????????????? Configuration? - SWC\Generic [SoftwareComponent]
???? utl:??????????????? Driver Rank??? - 00FF3000
???? utl:??????????????? Signer Score?? - Inbox (0D000003)
???? utl:?????????? Driver Node:
???? utl:??????????????? Status???????? - Outranked
???? utl:??????????????? Driver INF???? - c_swdevice.inf (C:\WINDOWS\System32\DriverStore\FileRepository\c_swdevice.inf_amd64_655de2ccc6addd01\c_swdevice.inf)
???? utl:??????????????? Class GUID???? - {62f9c741-b25a-46ce-b54c-9bccce08b6f2}
???? utl:??????????????? Driver Version - 06/21/2006,10.0.22000.1
???? utl:??????????????? Configuration? - SWD\GenericRaw [SoftwareDevice]
???? utl:??????????????? Driver Rank??? - 00FF3001
???? utl:??????????????? Signer Score?? - Inbox (0D000003)
???? utl:????? {Select Drivers - exit(0x00000000} 13:07:24.821
???? dvs:????? Device does not need an update.
!??? dvs:????? No better matching drivers found for device 'SWD\DRIVERENUM\AMDUWP&5&8ba283f&0'.
???? dvs: {Driver Setup Update Device - exit(0x00000000)} 13:07:24.822
!??? dvs: No devices were updated.
<<<? Section end 2022/11/08 13:07:24.829
<<<? [Exit status: FAILURE(0x00000103)]

????? ?您好，您所描述的現(xiàn)象無法判斷是否與您系統(tǒng)設(shè)置有關(guān)，其log文件沒有明顯相關(guān)信息，您可將完整log文件通過郵件發(fā)至我司技術(shù)郵箱：tech@wch.cn

????? ?另外驅(qū)動安裝若顯示“安裝成功”或“預(yù)安裝成功”皆為成功狀態(tài)，此時(shí)若插入設(shè)備還是無串口生成則可能與電路設(shè)計(jì)等當(dāng)面有關(guān)，此處也需要注意。

使用官方提供的安卓驅(qū)動，提示錯(cuò)誤CH34xAndroidDriver: Step2!，這個(gè)是什么意思呢？麻煩解答一下，謝謝

您好，看您的問題描述，使用的軟件版本非最新版本，您先發(fā)個(gè)郵件到我司技術(shù)郵箱tech@wch.cn，我們回復(fù)下。

您好，這是我的電路圖，是這樣的，我使用的是CH340G，但是插入電腦沒有絲毫反應(yīng)，是為什么呢？

V3電容使用的是104，這里忘記改了

您好，如上原理圖沒有問題，可先檢查下：

1、VCC和V3的電壓是否分別為5V和3.3V；

2、檢查UD+和UD-和主機(jī)的Host口有沒有連接反；

3、看下芯片剛上電工作的時(shí)候12MHz晶振是否起振，且頻率正常；

想通過該芯片的iic與FPGA連接，想問下該芯片是否支持從機(jī)拉低SCL使該芯片進(jìn)入等待狀態(tài)

您好，您所詢問的功能應(yīng)該是I2C時(shí)鐘延展功能（I2C Clock Stretching），CH341芯片暫不支持該功能，請知悉。

您好，

我去年為調(diào)試板子使用CH340E芯片做了3個(gè)USB轉(zhuǎn)串口工具（線路完全一致），剛開始三個(gè)都可以正常使用，一段時(shí)間后其中兩個(gè)都出現(xiàn)了損壞的情況，一個(gè)完全無法識別到設(shè)備，一個(gè)可以識別到設(shè)備但是顯示沒有驅(qū)動，請問這兩個(gè)都有可能是什么原因損壞的？

您好，如上原理圖設(shè)計(jì)無問題。若是擱置原因較久，可能要看下是否板子整體線路是否完好。可以先測試VCC和V3電壓是否為5V和3.3V。無問題的話，不排除板子受潮等外界因素導(dǎo)致。

原來CH341是沁恒產(chǎn)的。也太經(jīng)典了吧

請問CH341是否有支援I2C repeat start的格式?

有相關(guān)文件或是范例可供參考嗎?

您好，CH341進(jìn)行I2C讀動作時(shí)，即執(zhí)行CH341ReadI2C或者CH341StreamI2C函數(shù)讀長度不為0時(shí)，都會自動遵循I2C標(biāo)準(zhǔn)時(shí)序發(fā)送Repeat Start動作的。

請問vcc供電只有4.2V是不是不會工作