cxadc-win - CX2388x ADC DMA driver for Windows

Warning

⚠️ THIS IS EXPERIMENTAL AND SHOULD NOT BE USED IN A PRODUCTION ENVIRONMENT ⚠️

This was made for use with the decode projects, see here for more information on these cards.

Usage

Configure

cxadc-win-tool scan
cxadc-win-tool get <device>
cxadc-win-tool set <device> <parameter> <value>

See cxadc-linux3 for parameter descriptions.

Parameter	Range	Default
vmux	0-2	2
level	0-31	16
tenbit	0-1	0
sixdb	0-1	0
center_offset	0-63	0

Configure clockgen (Optional)

Important

Additional steps are required to configure clockgen

cxadc-win-tool clockgen audio get
cxadc-win-tool clockgen audio set <rate>
cxadc-win-tool clockgen cx get <clock>
cxadc-win-tool clockgen cx set <clock> <value>

Value	Frequency (MHz)
1	20
2	28.68686
3	40
4	50

Capture

Tip

Use Command Prompt instead of PowerShell if piping to STDOUT

cxadc-win-tool capture \\.\cxadc0 test.u8
cxadc-win-tool capture \\.\cxadc1 - | flac -0 --blocksize=65535 --lax --sample-rate=28636 --channels=1 --bps=8 --sign=unsigned --endian=little -f - -o test.flac

Example

cxadc-win-tool set \\.\cxadc0 vmux 1     # set cx card 0 vmux to 1 (bnc?)
cxadc-win-tool set \\.\cxadc1 vmux 1     # set cx card 1 vmux to 1 (bnc?)
cxadc-win-tool set \\.\cxadc0 level 0    # set cx card 0 level to 0 (amp?)
cxadc-win-tool set \\.\cxadc1 level 0    # set cx card 1 level to 0 (amp?)

cxadc-win-tool clockgen cx set 0 3       # set clock 0 to 40 MHz
cxadc-win-tool clockgen cx set 1 3       # set clock 1 to 40 MHz
cxadc-win-tool clockgen audio set 48000  # set audio sample rate to 48000 (recommended)

cxadc-win-tool status                    # show all device config

Download

Builds are currently only available via actions. You must be logged in to download artifacts.

Pre-installation

1. Disable Secure Boot in your BIOS
2. Disable Signature Enforcement, this can be done by typing bcdedit -set testsigning on in an Administrator Command Prompt and rebooting

Installation

1. Open Device Manager
2. Right click Multimedia Video Controller, click Properties
3. Click Update Driver...
4. Click Browse my computer for drivers
5. Browse to the path containing cxadc-win.inf and cxadc-win.sys, click Next
6. Click Install this driver software anyway when prompted

Clockgen (Optional)

Note

This has only been tested with the original clockgen, compatibility with cxadc-clockgen-mod is not guaranteed (24/12/01)

The clockgen mod is configurable via cxadc-win-tool.

1. Download the latest libusb-win32 drivers
2. Copy bin\amd64\libusb0.dll to C:\Windows\System32
3. Copy bin\amd64\libusb0.sys to C:\Windows\System32\drivers
4. Run install-filter-win.exe as Administrator, select Install a device filter
5. Select vid:1209 pid:0001 rev:0000 | USB Composite Device, click Install

Building

This has only been tested with VS 2022, WSDK/WDK 10.0.26100 and .NET 8.0.

Limitations

Due to various security features in Windows 10/11, Secure Boot and Signature Enforcement must be disabled. I recommend re-enabling when not capturing.

Known issues

Clockgen

• Windows reports incorrect audio sample rate, set to 48000 to avoid issues (24/12/01)
• The 3rd audio channel (HSW) does not work correctly (24/11/30)

Disclaimer

I take absolutely no responsibility for (including but not limited to) any crashes, instability, security vulnerabilities or interactions with anti-virus/anti-cheat software, nor do I guarantee the accuracy of captures.

Credits

This is based on the Linux cxadc driver, without which this would not exist.