| /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /** |
| * Test low-level key scanning |
| * |
| * ectool keyscan <beat_us> <filename> |
| * |
| * <beat_us> is the length of a beat in microseconds. This indicates the |
| * typing speed. Typically we scan at 10ms in the EC, so the beat period |
| * will typically be 1-5ms, with the scan changing only every 20-30ms at |
| * most. |
| * <filename> specifies a file containing keys that are depressed on each |
| * beat in the following format: |
| * |
| * <beat> <keys_pressed> |
| * |
| * <beat> is a beat number (0, 1, 2). The timestamp of this event will |
| * be <start_time> + <beat> * <beat_us>. |
| * <keys_pressed> is a (possibly empty) list of ASCII keys |
| * |
| * The key matrix is read from the fdt. |
| * |
| * @param argc Number of arguments (excluding 'ectool') |
| * @param argv List of arguments |
| * @return 0 if ok, -1 on error |
| */ |
| int cmd_keyscan(int argc, char *argv[]); |
