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https://github.com/Telecominfraproject/OpenCellular.git
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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
92 lines
1.8 KiB
C
92 lines
1.8 KiB
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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#include "i2c.h"
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#include "temp_sensor.h"
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#include "uart.h"
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#include "util.h"
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#include "console.h"
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#include "board.h"
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#include "peci.h"
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#include "tmp006.h"
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#include "task.h"
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#include "chip_temp_sensor.h"
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/* Defined in board_temp_sensor.c. Must be in the same order as
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* in enum temp_sensor_id.
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*/
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extern const struct temp_sensor_t temp_sensors[TEMP_SENSOR_COUNT];
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int temp_sensor_read(enum temp_sensor_id id)
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{
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const struct temp_sensor_t *sensor;
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if (id < 0 || id >= TEMP_SENSOR_COUNT)
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return -1;
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sensor = temp_sensors + id;
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return sensor->read(sensor->idx);
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}
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void poll_all_sensors(void)
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{
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#ifdef CONFIG_TMP006
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tmp006_poll();
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#endif
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#ifdef CONFIG_PECI
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peci_temp_sensor_poll();
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#endif
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#ifdef CHIP_lm4
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chip_temp_sensor_poll();
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#endif
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}
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void temp_sensor_task(void)
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{
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while (1) {
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poll_all_sensors();
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/* Wait 1s */
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task_wait_msg(1000000);
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}
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}
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/*****************************************************************************/
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/* Console commands */
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static int command_temps(int argc, char **argv)
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{
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int i;
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int rv = 0;
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int t;
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uart_puts("Reading temperature sensors...\n");
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for (i = 0; i < TEMP_SENSOR_COUNT; ++i) {
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uart_printf(" Temp from %s: ", temp_sensors[i].name);
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t = temp_sensor_read(i);
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if (t < 0) {
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uart_printf("Error.\n\n");
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rv = -1;
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}
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else
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uart_printf("%d K = %d C\n\n", t, t - 273);
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}
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if (rv == -1)
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return EC_ERROR_UNKNOWN;
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(temps, command_temps);
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/*****************************************************************************/
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/* Initialization */
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int temp_sensor_init(void)
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{
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return EC_SUCCESS;
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}
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