| CP210x Windows XP/Vista(32/64)/7(32/64)/8,8.1(32/64) Driver v6.7 Release Notes | |
| Copyright (C) 2014 Silicon Laboratories, Inc. | |
| This release contains the following components: | |
| * x64 directory | |
| * silabser.sys | |
| * silabenm.sys | |
| * x86 directory | |
| * silabser.sys | |
| * silabenm.sys | |
| * CP210xVCPInstaller_x86.exe (DPInst) | |
| * CP210xVCPInstaller_x64.exe (DPInst) | |
| * dpinst.xml (DPInst initialization file) | |
| * silabser.cat | |
| * slabvcp.inf | |
| * ReleaseNotes.txt (this file) | |
| Driver Installation | |
| ------------------- | |
| See Kit User's Guide for installation instructions. | |
| Release Dates | |
| ------------- | |
| CP210x USB to UART Bridge Driver v6.7 - April 11, 2013 | |
| Supported Operating Systems | |
| --------------------------- | |
| Windows 8/8.1 (64/32), 7 (64/32), Vista (64/32), and XP | |
| CP210x Windows Driver Revision History | |
| -------------------------------------- | |
| version 6.7 (Apr 11, 2014) | |
| Corrections | |
| ----------- | |
| Added vendor-specific commands to the driver that do not affect normal operation with | |
| standard CP210x devices. | |
| Modified write behavior to packetize data as a work around for a rare USB 2.0 hub behavior | |
| seen only in Windows XP (x86). | |
| version 6.6.1 (Oct 24, 2013) | |
| New features/Enhancements | |
| ------------------------- | |
| Added certification for Windows 8.1 | |
| version 6.6.1 | |
| New features/Enhancements | |
| ------------------------- | |
| Added support for CP2108 devices | |
| Corrections | |
| ----------- | |
| Corrected bug where OS would hang on repitition of many rapid open/closes on | |
| certain systems. | |
| version 6.6 | |
| New features/Enhancements | |
| ------------------------- | |
| Moving installer format to DPInst | |
| Supported under Windows 8 | |
| Corrections | |
| ----------- | |
| Corrected bug in total write timeout calculation | |
| Corrected bug where EV_BREAK event could be misreported based on incoming data | |
| Corrected another BSOD corner case regarding write cancellation | |
| version 6.5.3 | |
| Corrections | |
| ----------- | |
| Corrected BSOD corner case for a write cancellation | |
| Corrected memory leak that occurs when a device is plugged/unplugged rapidly enough to | |
| allow driver startup function to fail | |
| version 6.5 | |
| Corrections | |
| ----------- | |
| Corrected BSOD corner case issue for handling control requests | |
| Corrected issue where USB 3.0 hubs would deliver data to the driver out of order | |
| version 6.4 | |
| Corrections | |
| ----------- | |
| Corrected multiple BSOD issues by updating request handling for control requests to the USB | |
| device, and the write completion method | |
| Corrected device removal routine to also undo the COM port naming in the registry at removal time | |
| instead of when the device is closed after the removal. | |
| version 6.3a | |
| Corrections | |
| ----------- | |
| Updated to 3.2 DriverInstaller to correct a bug seen when updating from an old driver | |
| installer version | |
| version 6.3 | |
| Corrections | |
| ----------- | |
| Corrected a bug introduced in 6.2 which caused BSOD during surprise removal. | |
| Corrected a bug found in I/O cancellation corner case | |
| version 6.2 | |
| Corrections | |
| ----------- | |
| Corrected return value for DeviceIoControl() and other COM API functions once the device is | |
| removed to properly show ERROR_ACCESS_DENIED (0x05) instead of ERROR_BAD_COMMAND in GetLastError() | |
| Corrected bug in DTR/RTS reporting latency seen if you set DTR/RTS and ask for it before the | |
| device has reported it to the host - now when it is written it reads back immediately | |
| Corrected several USB requests that were improperly defined as device requests when they are actually | |
| interface requests - this doesn't exhibit and bugs in current single interface devices but was changed | |
| to be complete and correct | |
| New features/Enhancements | |
| ------------------------- | |
| Added support for CP2104 and CP2105 devices | |
| version 6.1 | |
| Corrections | |
| ----------- | |
| Corrected a memory leak which could bog the system down after extended use of a contiuously | |
| opened COM port, and conditionally yield bluescreens on certain systems | |
| Corrected a problem where an IO reqest would sometimes return a busy status to | |
| user mode, instead the queue is restarted if necessary before adding an IO request | |
| to the queue | |
| Corrected a condition which would blue screen on cancelling write request that hasn't been | |
| fully sent out USB | |
| Corrected the Capabilites return value, which incorrectly reported that timeouts are not supported | |
| Corrected several Queue size return values, which affected behavior in the MSCOMM control | |
| Corrected DTR/RTS value on device insertion, visible when Serial Enumeration is disabled | |
| Corrected the ability to override Baud Rate and Line Control from the INF file | |
| version 6.0 | |
| Corrections | |
| ----------- | |
| Corrected multiple blue screens and driver hangs related to race conditions in the driver | |
| Corrected problem where driver hangs when 4 or more devices are connected to a single | |
| transaction translator hub | |
| Corrected bugs that prohibited serial enumeration | |
| Corrected problem where IO requests were not completed/cancelled on a close | |
| Corrected problem with dialing out or PPP connections | |
| New features/Enhancements | |
| ------------------------- | |
| Created IO queueing mechanism so that multiple reads, writes, etc. can be queued and | |
| waited on | |
| version 5.4.29 | |
| Corrections | |
| ----------- | |
| Fixed a bug which causes GET_COMM_STATUS to take longer than expected (previously corrected | |
| in version 5.3) | |
| Corrected several conditions which cause blue screens | |
| Corrected bug in surprise removal which can cause a blue screen | |
| Corrected bug where TX_EMPTY wasn't being reported properly | |
| New features/Enhancements | |
| ------------------------- | |
| Added Windows 7 to the general installer for XP/2003/Vista under KMDF 1.9 | |
| Modified driver to support selective suspend in Vista/7 | |
| Updated silabenm.sys to include latest changes from serenum in the WDK | |
| WHQL Certified for XP/2003/Vista(32/64)/7(32/64) | |
| version 5.4.24 | |
| Corrections | |
| ----------- | |
| Fixed a bug which caused a random crash if a write took longer than normal to complete | |
| New features/Enhancements | |
| ------------------------- | |
| WHQL Certified for XP/2000/2003/Vista(32/64) | |
| version 5.4.23 | |
| Corrections | |
| ----------- | |
| Fixed a bug which caused a crash if the device is surprise removed during communication. | |
| Fixed a bug which incorrectly uses the TX_EMPTY flag. | |
| Fixed incorrect/incosistent status return values. | |
| Corrected the default software flow control values | |
| version 5.4 | |
| Corrections | |
| ----------- | |
| Fixed bug where the first packet of data is dropped in Windows 2000. | |
| New features/Enhancements | |
| ------------------------- | |
| Added support to keep all GPIO pin states and all baud rate and line control data if | |
| the device loses power during standby or hibernation. | |
| Updated to use the latest version 1.7 of KMDF | |
| version 5.3 | |
| Corrections | |
| ----------- | |
| Corrected the IOCTL_SERIAL_SET_QUEUE_SIZE to allow expansion of the receive buffer. | |
| Modified driver to limit the device access only when necessary to improve performance. | |
| Corrected a case where read interval timeouts do not get started properly. | |
| version 5.2.2 | |
| Corrections | |
| ----------- | |
| Fixed a bug that was causing random bluescreens after a device is opened and closed. | |
| version 5.2.1 | |
| Corrections | |
| ----------- | |
| Fixed a bug caused by the previous fix for incomplete reads in Hyperterminal. | |
| Fixed a bug when using the Manufacturing DLL where no data comes back from the part for | |
| customization type settings in Vista 64. | |
| version 5.2 | |
| Corrections | |
| ----------- | |
| Fixed a BAD_POOL_HEADER blue screen issue. | |
| Fixed a crash during surprise disconnect in HyperTerminal on Vista. | |
| Fixed a problem causing various incomplete reads, sometimes visible in HyperTerminal. | |
| New features/Enhancements | |
| ------------------------- | |
| CP210xVCPInstaller.exe updated to v2.4. | |
| version 5.1 | |
| Corrections | |
| ----------- | |
| Multiple devices can be used now with no problems. | |
| Driver now correctly works with the MSCOMM ActiveX control. | |
| version 5.0 | |
| New features/Enhancements | |
| ------------------------- | |
| Driver has been updated to use the KMDF. | |
| Driver now includes a Serial Enumeration filter driver. | |
| WHQL Certified for XP/2000/2003/Vista(32/64). | |
| version 4.40 | |
| New features/Enhancements | |
| ------------------------- | |
| Driver has been updated to include Vista (x86/x64) support. | |
| CP210xVCPInstaller.exe updated to v2.0. | |
| version 4.38a | |
| New features/Enhancements | |
| ------------------------- | |
| Driver version 4.38 is the same, however the installation procedure changed and a new | |
| installation utility has been provided. | |
| INF files have been changed to be independent of the installer, making reseller submissions | |
| easier. | |
| Windows 2K\XP\2003 now all have the same catalog file making the installation a single | |
| utility for all OS's. | |
| version 4.38 | |
| New features/Enhancements | |
| ------------------------- | |
| Extended surprise removal support added to fix COM port hang. | |
| WHQL Certified for Windows XP and 2000. | |
| Version 4.28a | |
| New features/Enhancements | |
| ------------------------- | |
| WHQL Certified for Windows XP and 2000. | |
| Version 4.28 | |
| New features/Enhancements | |
| ------------------------- | |
| Includes Preinstaller executable and with added preinstaller support in uninstaller | |
| executable and ini files. | |
| Corrections | |
| ----------- | |
| Fixed driver lock condition caused by certain invalid port settings. | |
| Fixed Windows 98 PreInstaller issue. | |
| Version 4.20 | |
| New features/Enhancements | |
| ------------------------- | |
| Changed driver binary file names from cyg_* to slab*. Also changed | |
| default inf file strings to SLAB and Silicon Laboratories. | |
| This installation includes catalog files for Windows 2000/XP Windows | |
| Hardware Quality Lab (WHQL) Certification. | |
| Corrections | |
| ----------- | |
| Modified behavior of SERIAL_EV_TXEMPTY event notification. Applications | |
| will no longer miss TXEMPTY events if a write is pending during the | |
| IOCTL_SERIAL_WAIT_ON_MASK control request. | |
| Version 4.16 | |
| New features/Enhancements | |
| ------------------------- | |
| Corrections | |
| ----------- | |
| Changed behavior for IOCTL_SERIAL_LSRMST_INSERT for correct modem | |
| event insertion. | |
| Version 4.09 | |
| Initial Release | |