X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;f=protocol%2Fusb_hid%2FREADME;h=0d2efc2aa2d81670deef1a1f0687019a8b931f52;hb=48e6d0848cdeac26ffab101ea2ef48e5ac60acd3;hp=0acf677f8b6d8f1fc5bc9a26098c50e30a99f345;hpb=9382bf2f765cfbb8f7a9a48157391cac2bb71780;p=max%2Ftmk_keyboard.git

diff --git a/protocol/usb_hid/README b/protocol/usb_hid/README
index 0acf677f..0d2efc2a 100644
--- a/protocol/usb_hid/README
+++ b/protocol/usb_hid/README
@@ -1,3 +1,8 @@
+USB HID protocol
+================
+Host side of USB HID keyboard protocol implementation.
+Only standard HID Boot mode is supported at this time. This means most of normal keyboards are supported while proprietary >6KRO and NKRO is not.
+
 Third party Libraries
 ---------------------
 USB_Host_Shield_2.0
@@ -7,3 +12,36 @@ USB_Host_Shield_2.0
 arduino-1.0.1
     Arduino files copied from:
     https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
+
+
+Test build
+----------
+In test directory;
+    $ make
+    $ DEV=/dev/ttyACM0 make program
+
+You can see HID keyboard reports on debug output.
+
+
+Restriction and Bug
+-------------------
+Not supported/confirmed yet.
+    Hub, suspend, keyboard LED
+
+Switching power on VBUS:
+    To power reset device.
+    http://www.circuitsathome.com/camera-control/simulating-cable-disconnect-on-usb-host-shield-2-0
+    This is needed for a device which are not initilized with 'USB Bus Reset'(long SE0)
+
+Can't bus-reset a keyboard which already attached on bus properly.
+    Slow start up of Leonardo's bootloader causes this?
+    Need to unplug/plug a keyboard after firmware starts up.
+    MAX3421E doesn't work SAMPLEBUS well to know whether device connected or not.
+
+Keyboard with other endpoints than boot keyboard may go wrong.
+    On my keyboard with mouse key the converter locks up when using mouse key function.
+
+Can't compile on Windows filesystem.
+    On Linux no problem.
+    Windows doesn't know difference between common/print.h and arduino/Print.h.
+    Change file name common/print.h to console.h ?