Hi All:
One of my components that handles a USB device was working in 17.11 (x86_32, nova), but is causing problems when I attempt to run it in 18.05. The device is an FTDI-based USB-GPIO adapter (FT232H chip), along with a port of libftdi.
The USB hub setup seems to work, but the FTDI setup generates an error in the log "ftdi_usb_reset failed", occurring when libusb_control_transfer() fails during a USB reset.
There is a similar sounding issue mentioned in the release notes regarding usb_block_drv. Might it be the same? If so, has this been resolved in some general way?
Thank you for any input, Steven
We have resolved this issue and wanted to share what we learned.
One of my components that handles a USB device was working in 17.11 (x86_32, nova), but is causing problems when I attempt to run it in 18.05. The device is an FTDI-based USB-GPIO adapter (FT232H chip), along with a port of libftdi.
The USB hub setup seems to work, but the FTDI setup generates an error in the log "ftdi_usb_reset failed", occurring when libusb_control_transfer() fails during a USB reset.
We tracked the issue to a call to libusb_control_transfer() but the issue was not in libusb. Instead it came from us neglecting to set a pseudo-wall clock time as instructed in:
https://genode.org/documentation/release-notes/18.02#C_runtime
With that set properly our port of the FTDI GPIO library to Genode is working in 18.05.
Hello Edward,
On Thu, Aug 16, 2018 at 09:15:48AM -0500, Edward Sandberg wrote:
We tracked the issue to a call to libusb_control_transfer() but the issue was not in libusb. Instead it came from us neglecting to set a pseudo-wall clock time as instructed in:
https://genode.org/documentation/release-notes/18.02#C_runtime
With that set properly our port of the FTDI GPIO library to Genode is working in 18.05.
Many thanks for sharing your solution!
Best regards
-
Christian Helmuth -
Edward Sandberg -
Steven Johnston