From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikita Kiryanov Date: Mon, 24 Nov 2014 16:41:06 +0200 Subject: [U-Boot] usbkbd input double echoed In-Reply-To: <5471FABD.6090507@redhat.com> References: <5471F842.1060803@compulab.co.il> <5471FABD.6090507@redhat.com> Message-ID: <54734382.9070703@compulab.co.il> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Hans, On 11/23/2014 05:18 PM, Hans de Goede wrote: > Hi, > > On 11/23/2014 04:07 PM, Nikita Kiryanov wrote: >> Hi all, >> >> I've enabled USB keyboard for cm_fx6 using these three defines: >> >> #define CONFIG_USB_KEYBOARD >> #define CONFIG_SYS_USB_EVENT_POLL >> #define CONFIG_SYS_STDIO_DEREGISTER >> >> I am able to probe it with `usb start`, and set it as input using >> `setenv stdin usbkbd`. >> >> It works, save for one problem: all key presses are echoed twice. >> The double echo happens both on serial and vga stdout. >> It is not dependant on the keyboard (tried different ones). >> Output from commands looks normal. >> Switching to CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP did not help. >> Shell still understands each key press as one key press, so >> even though "pprriinntteennvv" is displayed, the shell still sees >> "printenv". >> >> Any idea what the cause may be? > > In my experience both polling methods are sub-optimal, if your board > has an ehci controller, try using CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE > > Also I use CONFIG_CONSOLE_MUX, then you can do: > > setenv stdin serial,usbkbd > > And get both, using this usb-kbd support works fine for me, without the > double echo, both on the serial console and on the sunxi-cfb console over > hdmi. > > Regards, > > Hans > I think I must have encountered some toolchain bug. After switching to another branch to work on something else I came back to my dev branch and the compiled images no longer have this bug. Thanks for the help though.. -- Regards, Nikita Kiryanov