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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
31 lines
876 B
C
31 lines
876 B
C
/* Copyright (c) 2012 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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/* TMP006 temperature sensor module for Chrome EC */
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#ifndef __CROS_EC_TMP006_H
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#define __CROS_EC_TMP006_H
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#define TMP006_ADDR(PORT,REG) ((PORT << 16) + REG)
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#define TMP006_PORT(ADDR) (ADDR >> 16)
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#define TMP006_REG(ADDR) (ADDR & 0xffff)
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struct tmp006_t {
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const char* name;
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/* I2C address formed by TMP006_ADDR macro. */
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int addr;
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};
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/* Poll all TMP006 sensors. Return 0 on success. */
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int tmp006_poll(void);
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/* Get the last polled value of a sensor. Return temperature in K.
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* The low bit in idx indicate whether to read die temperature or
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* object temperature. The other bits serve as internal index to tmp006
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* module. */
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int tmp006_get_val(int idx);
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#endif /* __CROS_EC_TMP006_H */
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