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0fefd25c0c
A temperature polling task is added to achieve temporal correction and also reduce the latency of reading temperature. Factor out sensor specific part to keep code clean. Signed-off-by: Vic Yang <victoryang@chromium.org> BUG=chrome-os-partner:7801 TEST=On link, 'temps' shows all temperature readings. Cover each sensor with hand and see object temperature rise. Compilation succeeded on bds/adv/daisy/discovery. Change-Id: I3c44c8b2e3ab2aa9ce640d3fc25e7fba56534b86
33 lines
837 B
C
33 lines
837 B
C
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Temperature sensor module for Chrome EC */
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#ifndef __CROS_EC_TEMP_SENSOR_H
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#define __CROS_EC_TEMP_SENSOR_H
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#include "common.h"
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#include "board.h"
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/* "enum temp_sensor_id" must be defined for each board in board.h. */
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enum temp_sensor_id;
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struct temp_sensor_t {
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const char* name;
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/* Read sensor value and return temperature in K. */
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int (*read)(int idx);
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/* Index among the same kind of sensors. */
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int idx;
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};
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/* Initializes the module. */
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int temp_sensor_init(void);
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/* Returns the most recently measured temperature for the sensor in K,
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* or -1 if error. */
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int temp_sensor_read(enum temp_sensor_id id);
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#endif /* __CROS_EC_TEMP_SENSOR_H */
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