diff options
| author | Alec Berg <alecaberg@chromium.org> | 2014-01-06 18:07:27 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-02-22 00:48:25 +0000 |
| commit | 9305b84ab2a844393b90b897c394a557d8dfa8fb (patch) | |
| tree | 1cd7fe0ebaccce6d909e736ced277a31090e2721 /include | |
| parent | 8df483bf594d6251005a88de211078e2a445a55d (diff) | |
| download | chrome-ec-9305b84ab2a844393b90b897c394a557d8dfa8fb.tar.gz | |
rambi: Accelerometer driver for kxcj9.
Added accelerometer driver for kxcj9 accelerometers. Currently
the accelerometers aren't being used by anything, but there are
console commands, accelwrite and accelread, to perform transactions.
BUG=none
BRANCH=rambi
TEST=Used EC console commands to test that accelerometers respond
and data looks reasonable.
Original-Change-Id: I6ddcf04ec278adeacb148c19b10c3c296b467954
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/184693
Reviewed-by: Randall Spangler <rspangler@chromium.org>
(cherry picked from commit 5e1d2052b034b2400b98b2126243e01397a2ce56)
Conflicts:
board/clapper/board.c
board/clapper/board.h
board/glimmer/board.c
board/glimmer/board.h
Change-Id: If8744ddc3273fc08e29830adfd068dc302dd120a
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/187432
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/accelerometer.h | 36 | ||||
| -rw-r--r-- | include/config.h | 4 |
2 files changed, 40 insertions, 0 deletions
diff --git a/include/accelerometer.h b/include/accelerometer.h new file mode 100644 index 0000000000..48d61ac3ab --- /dev/null +++ b/include/accelerometer.h @@ -0,0 +1,36 @@ +/* Copyright (c) 2014 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. + */ + +/* This array must be defined in board.c. */ +extern const int accel_addr[]; + +/* This enum must be defined in board.h. */ +enum accel_id; + +/* Number of counts from accelerometer that represents 1G acceleration. */ +#define ACCEL_G 1024 + +/** + * Read all three accelerations of an accelerometer. Note that all three + * accelerations come back in counts, where ACCEL_G can be used to convert + * counts to engineering units. + * + * @param id Target accelerometer + * @param x_acc Pointer to store X-axis acceleration (in counts). + * @param y_acc Pointer to store Y-axis acceleration (in counts). + * @param z_acc Pointer to store Z-axis acceleration (in counts). + * + * @return EC_SUCCESS if successful, non-zero if error. + */ +int accel_read(enum accel_id id, int *x_acc, int *y_acc, int *z_acc); + +/** + * Initiailze accelerometers. + * + * @param id Target accelerometer + * + * @return EC_SUCCESS if successful, non-zero if error. + */ +int accel_init(enum accel_id id); diff --git a/include/config.h b/include/config.h index 479a68e61a..114e6e982f 100644 --- a/include/config.h +++ b/include/config.h @@ -36,6 +36,9 @@ * BOARD_*, CHIP_*, and CHIP_FAMILY_*. */ +/* Specify type of accelerometers attached. */ +#undef CONFIG_ACCEL_KXCJ9 + /* Compile chip support for analog-to-digital convertor */ #undef CONFIG_ADC @@ -234,6 +237,7 @@ * console. */ +#undef CONFIG_CMD_ACCELS #undef CONFIG_CMD_BATDEBUG #undef CONFIG_CMD_CLOCKGATES #undef CONFIG_CMD_COMXTEST |