We've recently become aware of an issue with a new update to Windows 10 and our CP210x VCP "Universal" Driver for Windows 10, driver version v10.1.1. When attempting to install the driver, an error is given by Windows that states "A service installation section in this INF is invalid." This occurs because Windows has changed drive INF requirements slightly, and our current driver's INF file does not meet these requirements.
We currently are working to fix this issue, although due to testing and recertification requirements, we do not expect the fixed driver to be available until mid-June.
A work-around exists currently, but it involves manually editing the .INF file for the driver. This causes another issue - the driver is no longer signed in this case, so the driver must be forced to install, and Windows will show a warning that the driver is unsigned.
Firstly, the work-around is as follows:
Download the Windows 10 Universal driver from here: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
Edit the .inf file with this driver, performing the following modifications:
On or around line 118, change/edit
ServiceBinary = %13%\silabser.sys
ServiceBinary = %12%\silabser.sys
And on or around line 160, change/edit
Silabser_CopyFiles_FileListSection = 13 ; Driver package's Driver Store directory (%WINDIR%\System32\DriverStore\FileRepository ) (was 12 Drivers directory (%SystemRoot%\system32\drivers))
Silabser_CopyFiles_FileListSection = 12 ; Driver package's Driver Store directory (%WINDIR%\System32\DriverStore\FileRepository ) (was 12 Drivers directory (%SystemRoot%\system32\drivers))
I.e. replace every 13 in the file with 12.
Once these changes are made, attempt to re-install the driver. A warning will be shown that the driver is unsigned, but you can ignore this for now. If you do not receive a warning issue, or if Windows refuses to install the unsigned driver (you may get an error about the hash being invalid), you can disable driver signing enforcement by following these instructions: https://www.maketecheasier.com/install-unsigned-drivers-windows10/
Alternatively, rolling back to a previous build of Windows also resolves the issue.
Before following the steps below, please take some time to read the generic tips for troubleshooting and asking questions from this post:
[Note2] If you are not the manufacturer of the device you are troubleshooting, note that Silicon Labs does not support end users directly. Please contact your product manufacturer for support. For more information, please see the following knowledge base article:
Following steps are considered as additional to information described from above. When you will post a question regarding VCP driver for Mac OS, please provide some information as below:
1) The SCH/Layout of your board if It is your custom design (eg: not Silicon Labs' EK).
2) The part number and the VID/PID of the part that you are using.
3) The output of the commands below (make sure your board is plugged in because the driver will not be loaded if there is no device attached to your system):
Get Mac Version: $ sw_vers
For Big Sur: $ systemextensionsctl list | grep -iE '(silabs|cp210x)'
For Older Mac OS (ex: Catalina): $ kextstat | grep -iE '(silabs|cp210x)'
List USB devices: $ ls /dev/cu.*
4) Your test code or scripts if any that you are using and have the issue with.
Before posting a question
When posting a question, make sure to include the following:
Note: If you are not the manufacturer of the device you are troubleshooting, note that Silicon Labs does not support end users directly. Please contact your product manufacturer for support. For more information, please see the following knowledge base article: http://community.silabs.com/t5/Silicon-Labs-Knowledge-Base/Troubleshooting-a-Product-Using-a-CP210x-USB-to-UART-Bridge/ta-p/131318
For general community usage please refer to the Silicon Labs Community Guidelines
I have a funny problem. I have two computers out of a few hundred that connect to a serial port at 115200. They can connect fine at 19200.
Here is the trace from a serial port sniffer.
19200 Baud Trace:
[29/04/2018 19:05:26] - Open port COM3 (C:\Program Files (x86)\VA2FSQ\Win4IcomSuite-v1.00-x64\Win4IcomSuite.exe)
[29/04/2018 19:05:26]Changed baudrate: 19200
[29/04/2018 19:05:26]Disabled RTS
[29/04/2018 19:05:26]Disabled DTR
[29/04/2018 19:05:26]Changed line control: Databits 8, Parity none, StopBits 1
[29/04/2018 19:05:26]Changed flow control: ControlHandShake 0x00, FlowReplace 0x00, XonLimit 55546, XoffLimit 55546
Here is at 115200
[29/04/2018 19:10:43] - Open port COM3 (C:\Program Files (x86)\VA2FSQ\Win4IcomSuite-v1.00-x64\Win4IcomSuite.exe)
[29/04/2018 19:10:43] - Close port COM3
[29/04/2018 19:10:43] - Open port COM3 (C:\Program Files (x86)\VA2FSQ\Win4IcomSuite-v1.00-x64\Win4IcomSuite.exe)
[29/04/2018 19:10:43] - Close port COM3
It just won't connect. I am using the .NET serial port class.
Have an almost brand new Mac mini (M1, 2020) running macOS Big Sur version 11.0.1.
Have already visited these links detailing other Big Sur install fails to no success.
Following the install process appears to work correctly, but after accepting security prompt and getting the install success, extension does not show up in the Extensions list.
Install logs below:
willamini@Williams-Mac-mini ~ % tail -f ~/Library/Log/silabs_vcp_installer.log Checking currentlyLoadedCP210xDriverVersion... kextstat found version 6.0.0/6 No old cp210x drivers found in /System/Library/Extensions No old cp210x drivers found at all There are 0 copies installed. Called ioclasscount... com_silabs_CP210xGPIO = <no such class>, com_silabs_driver_CP210xVCPDriver = <no such class> appShouldTerminate: NSTerminateNow applicationWillTerminate received. Step: License Step: License Sheet User agreed to software license. Step: Info Checking currentlyLoadedCP210xDriverVersion... No old cp210x drivers found in /System/Library/Extensions No old cp210x drivers found at all There are 0 copies installed. Called ioclasscount... com_silabs_CP210xGPIO = <no such class>, com_silabs_driver_CP210xVCPDriver = <no such class> Called ioclasscount... com_silabs_CP210xGPIO = <no such class>, com_silabs_driver_CP210xVCPDriver = <no such class> Step: Install installing the helper... helper tool installed Checking currentlyLoadedCP210xDriverVersion... Checking currentlyLoadedCP210xDriverVersion... kextstat found version 6.0.0/6 Step: Rebuild Driver Cache kextstat found version 6.0.0/6 Remote Call rebuild_driver_cache DONE. Invalidate cache: ok Step: Summary
It appears some stuff loaded, but it does not show up in the extensions list.
Last login: Thu Jan 28 16:25:06 on ttys000 willamini@Williams-Mac-mini ~ % kextstat | grep -i silab Executing: /usr/bin/kmutil showloaded No variant specified, falling back to release willamini@Williams-Mac-mini ~ % kextfind | grep -i silab /Library/SystemExtensions/784ACEC1-93B2-42D4-B2D4-796AC10C93EF/com.silabs.cp210x.dext willamini@Williams-Mac-mini ~ % cd /Library/Extensions willamini@Williams-Mac-mini Extensions % ls -a . .. HighPointIOP.kext HighPointRR.kext SoftRAID.kext willamini@Williams-Mac-mini Extensions %
If I run the uninstaller, and then attempt to run the troubleshoot .pkg file, it installs the previous 5.3.5 version, but fails to load. If I manually force a load using kextload, I get an error stating 5.3.5 is not meant for arm64e architecture.
Has anyone tried to install on the new M1 architecture?
How to recovery CP2112 I2C interface back to normal?
my problem is I2C slave get a hang condition, and we already reset device let device back to normal.
but CP2112 I2C interface side still keep crash state (SCL or SDA keep low, based on different issue), how to recovery it back to normal.
version is CP2112 F03
OS is Linux
duplicate steps (simulate as a slave device hang and reset device by hardware reset pin let device back to normal. around 70~90% CP2112 I2C interface still cannot work.)
1. CP2112 as I2C Host connect to PCA9548 I2C HUB and confirm the operation is ok
2. try to tied SCL (or SDA) to ground around 1sec.
3. use a multi-meter to check SCL and SDA voltage level is back to high (measure the bus is normal state.)
but CP2112 already go to hang state, I cannot list any slave device or search device.
I try to reset CP2112 by hardware pin. but it's not workable. (USB side ok, I2C side is not ok)
Do you have news about the new version of the driver for MAC OSX 11for CP210x.
We have several devices that are not working since the Mac update.
Are you going to release a new driver soon?
Thank you in advance.
I installed the 5.3.5 CP210x VCP Driver onto my iMac Pro running Big Sur 11.0.1 Release Candidate. The install process required me to go to System Preferences>Security & Privacy > General and allow the loading of the driver. However, there is no message to be found with a selection to allow the loading of the driver.
Any solutions for this problem? Thanks.
I made a custom PCB which uses the same circuitry as the development board HUZZAH32 by Adafruit. Its core component is an ESP32 microcontroller and there is a CP2104 USB to UART bridge IC so it can be hooked up to a PC via USB to program it. The complete schematics can be found here: https://learn.adafruit.com/assets/41630
These are the modifications I made to the original design:
- connected some peripherals to the GPIOs of the ESP32 and added a stronger voltage regulator to handle the current consumption of those devices
- connected the NC pin of the CP2104 to GND (this was necessary for my PCB layout)
Here is a picture ot what the wiring looks like:
I first installed the Windows 10 Universal CP210x USB to UART Bridge VCP Driver and the tools for the Arduino IDE. This is what happens:
When I connect my board to my Windows 10 PC mostly the COM port does not show up nor Windows notifies me that an unknown device has been connected. But sometimes it does show this message or shows up as serial interface and I can upload my code. This occurs randomly and I cant figure out what triggers whether it functions or not.
The board does always get powered up though, as the on-board LED lights up.
I already tried the following:
- use another USB cable (in total, I tried three different ones)
- use another PC (also Windows 10)
- check the VID and PID using UVCView to find out whether my chip can actually work properly with the drivers I installed
- re-solder the chip and USB connector to improve the PCB connections
- reinstall the drivers
- clean the pins around the chip with some isopropanol
- check the connections of the CP2104 using a multimeter
- temporarely add a 4.7kOhm resistor between VIO and the #RST pin of the chip to ensure that it does not reset itself due to static noise
But nothing fixed the problem.
I even made a copy of my board which had the same problem, so I assume it has nothing to do with faulty solder joints.
The datasheet of the CP2104 says about the NC pin:
This pin should be left unconnected or tied to VIO.
Could this be the explanation to the strange behaviour of the board? As the the Pin is not connected internally, I guess not, right?
Or is this a software issue?
I am a student who makes stuff with microcontrollers as a hobby and sadly, what is happening seems to be beyond my current knowledge.
I highly appreciate any help, suggestions or tips.
I have tried to install the CP210x VCP Driver v6.0.0 on macOS Big Sur version 11.1. The installer appears to succeed, but no driver is installed.
Tailing the installer log, gave me this:
tail -f ~/Library/Log/silabs_vcp_installer.log
Step: License Step: License Sheet User agreed to software license. Step: Info Checking currentlyLoadedCP210xDriverVersion... No old cp210x drivers found in /System/Library/Extensions No old cp210x drivers found at all There are 0 copies installed. Called ioclasscount... com_silabs_CP210xGPIO = <no such class>, com_silabs_driver_CP210xVCPDriver = <no such class> Called ioclasscount... com_silabs_CP210xGPIO = <no such class>, com_silabs_driver_CP210xVCPDriver = <no such class> Step: Install installing the helper... helper tool installed Checking currentlyLoadedCP210xDriverVersion... Checking currentlyLoadedCP210xDriverVersion... kextstat found version 6.0.0/6 Step: Rebuild Driver Cache kextstat found version 6.0.0/6 Remote Call rebuild_driver_cache DONE. Invalidate cache: ok Step: Summary appShouldTerminate: NSTerminateNow applicationWillTerminate received.
During the installation I have to allow the driver to be installed, as expected, but afterwards I cannot find the newly installed driver.
Inspired by the troubleshooting guide, I did some checks with the following results:
kextstat | grep -i silab Executing: /usr/bin/kmutil showloaded No variant specified, falling back to release kextfind | grep -i silab /Library/SystemExtensions/83A8279C-9DD3-4E31-A843-93712FEC4965/com.silabs.cp210x.dext
Hm. Strange location, ...
ioclasscount | grep -i silab
... nothing, ...
ls -al /dev/cu.* crw-rw-rw- 1 root wheel 22, 1 Jan 7 22:20 /dev/cu.Bluetooth-Incoming-Port ls -al /Library/Extensions/SiLabsUSBDriver* ls: /Library/Extensions/SiLabsUSBDriver*: No such file or directory ls -al /System/Library/Extensions/SiLabsUSBDriver* ls: /System/Library/Extensions/SiLabsUSBDriver*: No such file or directory
...and still nothing. The installer would now insist there is a driver loaded(!).
I have also tried some version 6.0.1 posted here in this forum, with the same results. Although, the version number shown was still 6.0.0... I have also tried the installer in the troubleshooting folder, with the same results. Uninstalls have often followed by reboots.
Prior these attempts I also tried to install version 5.3.5, failing of course.
The hardware is a MacBook Pro mid 2014, 2,2 GHz Quad-Core Intel Core i7, 16 GB 1600 MHz DDR3.
Was the initial attempt with version 5.3.5 fatal for the system? If so, how can I revert it? Or, what should I do to succeed with the installation of working drivers for Big Sur?
Any help will be appreciated. Thanks!
I am trying to use the CP2102N-EB development board to communicate with an ARM microcontroller. This microcontroller's USB port is configured as CDC host.
I am writing the firmware for this microcontroller.
I thought the CP2102N's device class would be 0x02 (CDC Device). But I now know that it identifies as 0xFF (Vendor Specific)
Is there a way to configure the CP2102N to be able to communicate using standard CDC. Or do I have to write a specific driver for it?
Thanks in advance,
I have CP2108 chips on my cards and I had some problems about the data sending.
I bought CP2108-EK to be able to find the problem source. But same problems continued.
I can explain the progress briefly like this: (Baud rate: 115200, Data bits: 8, Parity: 0, Stop bit: 1)
1) I am sending '--> PC to Bill Reader<LF>' message with 0.25 ms period.
2) If message received device responses with '--> OK<LF>' message immediately.
3) And at uncertain times rarely numbers send from PC to device. Like '0123' 4 digit numbers.
The problem is: after a few minutes later characters shift and complete messages can not be received.
1) '--> PC to Bill Reader<LF>' message is sent but '--> PC to Bill Reade' is received
2) than '0123' message is sent but 'r<LF>01' is received.
As I understand, CP2108 sends first message's rest part, and than sends first part of second message.
Please help me about this problem.
Note: This problem does not occur at 9600 baud rate.
I try to install Cp2010x on my ubuntu 20.10, but all tuti I found are a little bit old and I get this Error message:
zoopy@alain:~/cp210x$ sudo dmesg | tail
[ 5354.244421] prefetch64-sse: 5484.000 MB/sec
[ 5354.284418] generic_sse: 4767.000 MB/sec
[ 5354.284421] xor: using function: prefetch64-sse (5484.000 MB/sec)
[ 5354.339922] Btrfs loaded, crc32c=crc32c-intel
[ 7385.046797] usbcore: registered new interface driver usbserial_generic
[ 7385.046817] usbserial: USB Serial support registered for generic
[ 7385.047001] cp210x: loading out-of-tree module taints kernel.
[ 7385.047004] cp210x: module license 'unspecified' taints kernel.
[ 7385.047005] Disabling lock debugging due to kernel taint
[ 7385.047028] cp210x: module verification failed: signature and/or required key missing - tainting kernel
Some help will be appreciate, thanks
Hey everyone, so I have designed my circuit for the CP2102N QFN24 and it works totally fine however I'm trying to debug an issue on another part of my design that is not reliable.
Specifically the ESP32 Autoreset.
Has my schematic for CP2102N been designed correctly? I basically want to use external 3.3V supply and have the internal CP2102N voltage regulator disabled.
Is the setup of VIO correct, or should I also connect it to VDD?