I recently worked with Kyosti to update the EHCI Debug cable.
You can find an updated version of the cable here, under examples/debugdev_full_duplex. https://github.com/night199uk/fx2lib https://github.com/night199uk/fx2lib There is a .PDF with a build spec based on the newer version of the FX2LP boards that are easily available from taobao or eBay. It should work with the old ones too. It is a slightly modified version of Kyosti’s original (excellent) spec that got me started.
The new cable/firmware complies with the 8-byte packet requirement of the EHCI Debug Device specification to avoid overrunning the EHCI Debug port buffers. Also in theory it should be faster (perhaps if you remove the 8-byte packetization) due to the use of GPIF streaming.
The EHCI Debug cable implements the CDC ACM spec - I didn’t modify that part at all, but in theory it should appear as a standard serial port under Windows. I’ve tested it with Linux and OS X and both support it natively through CDC ACM drivers and I believe a friend of mine tested it working as such.
Also EDK2 supports it for SourceLevelDebugPkg. That needs some minor patches as EDK2 hard-codes the USB endpoint numbers for Ajays - I may contribute back patches to read those from the descriptor at some point but it’s an easy modification to make manually.
Regards, Chris.
On 4 Apr 2016, at 13:00, Kyösti Mälkki kyosti.malkki@gmail.com wrote:
---------- Forwarded message ---------- From: Zheng Bao <fishbaoz@hotmail.com mailto:fishbaoz@hotmail.com> Date: Fri, Mar 18, 2016 at 4:01 PM Subject: [coreboot] Is windows driver for EHCI DEBUG available. To: "coreboot@coreboot.org mailto:coreboot@coreboot.org" <coreboot@coreboot.org mailto:coreboot@coreboot.org>
Hi, all, http://www.coreboot.org/DIY_EHCI_debug_dongle https://www.coreboot.org/DIY_EHCI_debug_dongle http://www.coreboot.org/EHCI_debug_dongle https://www.coreboot.org/EHCI_debug_dongle I want to build a EHCI debug dongle based on above links. I am wondering if the windows driver of the dongle is available. I google it but can not find it. I assume it is a generic driver. Who knows about that?
Thanks.
Zheng
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I have built a dongle with old version of CY7C68013 board. I still work based on Kyosti's code in bitbucket, except building master and slave code respectively instead of detecting PA3. The linux terminal can be found in examples/debugdev_full_duplex/terminal.c. The windows driver can be found in http://www.cypress.com/documentation/software-and-drivers/usb-serial-softwar...
After the USB-serial is installed, the driver can be found in C:\Program Files (x86)\Cypress\USB-Serial SDK\Cypress USB-Serial Driver\DriverBinary\CDC_Driver\bin
For win7 x64, it is in C:\Program Files (x86)\Cypress\USB-Serial SDK\Cypress USB-Serial Driver\DriverBinary\CDC_Driver\bin\win7\x64
We need to add Cypress 68013 device ID in both CypressSerial.inf and CypressUsbAndBus.inf. Then we update the driver in device manger. Then we can found the COM5 in device manager. Open COM5 with Tera term, putty, or other terminal applications.
The new version is still being worked on. I believe it is no problem.
Zheng
From: croberts@bongle.co.uk Date: Mon, 4 Apr 2016 16:03:25 +0800 To: coreboot@coreboot.org Subject: Re: [coreboot] Is windows driver for EHCI DEBUG available. CC: fishbaoz@hotmail.com
I recently worked with Kyosti to update the EHCI Debug cable. You can find an updated version of the cable here, under examples/debugdev_full_duplex.https://github.com/night199uk/fx2libThere is a .PDF with a build spec based on the newer version of the FX2LP boards that are easily available from taobao or eBay. It should work with the old ones too. It is a slightly modified version of Kyosti’s original (excellent) spec that got me started. The new cable/firmware complies with the 8-byte packet requirement of the EHCI Debug Device specification to avoid overrunning the EHCI Debug port buffers. Also in theory it should be faster (perhaps if you remove the 8-byte packetization) due to the use of GPIF streaming. The EHCI Debug cable implements the CDC ACM spec - I didn’t modify that part at all, but in theory it should appear as a standard serial port under Windows. I’ve tested it with Linux and OS X and both support it natively through CDC ACM drivers and I believe a friend of mine tested it working as such. Also EDK2 supports it for SourceLevelDebugPkg. That needs some minor patches as EDK2 hard-codes the USB endpoint numbers for Ajays - I may contribute back patches to read those from the descriptor at some point but it’s an easy modification to make manually. Regards,Chris. On 4 Apr 2016, at 13:00, Kyösti Mälkki kyosti.malkki@gmail.com wrote: ---------- Forwarded message ---------- From: Zheng Bao fishbaoz@hotmail.com Date: Fri, Mar 18, 2016 at 4:01 PM Subject: [coreboot] Is windows driver for EHCI DEBUG available. To: "coreboot@coreboot.org" coreboot@coreboot.org
Hi, all, http://www.coreboot.org/DIY_EHCI_debug_dongle http://www.coreboot.org/EHCI_debug_dongle I want to build a EHCI debug dongle based on above links. I am wondering if the windows driver of the dongle is available. I google it but can not find it. I assume it is a generic driver. Who knows about that?
Thanks.
Zheng
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