Contiki-NG
batmon-sensor.c
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1 /*
2  * Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the copyright holder nor the names of its
14  * contributors may be used to endorse or promote products derived
15  * from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28  * OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 /*---------------------------------------------------------------------------*/
31 /**
32  * \addtogroup cc26xx-batmon
33  * @{
34  *
35  * \file
36  * Driver for the CC13xx/CC26xx AON battery monitor
37  */
38 /*---------------------------------------------------------------------------*/
39 #include "contiki.h"
40 #include "lib/sensors.h"
41 #include "batmon-sensor.h"
42 
43 #include "ti-lib.h"
44 
45 #include <stdint.h>
46 #include <stdio.h>
47 /*---------------------------------------------------------------------------*/
48 #define DEBUG 0
49 #if DEBUG
50 #define PRINTF(...) printf(__VA_ARGS__)
51 #else
52 #define PRINTF(...)
53 #endif
54 /*---------------------------------------------------------------------------*/
55 #define SENSOR_STATUS_DISABLED 0
56 #define SENSOR_STATUS_ENABLED 1
57 
58 static int enabled = SENSOR_STATUS_DISABLED;
59 /*---------------------------------------------------------------------------*/
60 /**
61  * \brief Returns a reading from the sensor
62  * \param type BATMON_SENSOR_TYPE_TEMP or BATMON_SENSOR_TYPE_VOLT
63  *
64  * \return The value as returned by the respective CC26xxware function
65  */
66 static int
67 value(int type)
68 {
69  if(enabled == SENSOR_STATUS_DISABLED) {
70  PRINTF("Sensor Disabled\n");
71  return 0;
72  }
73 
74  if(type == BATMON_SENSOR_TYPE_TEMP) {
75  return (int)ti_lib_aon_batmon_temperature_get_deg_c();
76  } else if(type == BATMON_SENSOR_TYPE_VOLT) {
77  return (int)ti_lib_aon_batmon_battery_voltage_get();
78  } else {
79  PRINTF("Invalid type\n");
80  }
81 
82  return 0;
83 }
84 /*---------------------------------------------------------------------------*/
85 /**
86  * \brief Configuration function for the battery monitor sensor.
87  *
88  * \param type Activate, enable or disable the sensor. See below
89  * \param enable If
90  *
91  * When type == SENSORS_HW_INIT we turn on the hardware
92  * When type == SENSORS_ACTIVE and enable==1 we enable the sensor
93  * When type == SENSORS_ACTIVE and enable==0 we disable the sensor
94  */
95 static int
96 configure(int type, int enable)
97 {
98  switch(type) {
99  case SENSORS_HW_INIT:
100  ti_lib_aon_batmon_enable();
101  enabled = SENSOR_STATUS_ENABLED;
102  break;
103  case SENSORS_ACTIVE:
104  if(enable) {
105  ti_lib_aon_batmon_enable();
106  enabled = SENSOR_STATUS_ENABLED;
107  } else {
108  ti_lib_aon_batmon_disable();
109  enabled = SENSOR_STATUS_DISABLED;
110  }
111  break;
112  default:
113  break;
114  }
115  return enabled;
116 }
117 /*---------------------------------------------------------------------------*/
118 /**
119  * \brief Returns the status of the sensor
120  * \param type SENSORS_ACTIVE or SENSORS_READY
121  * \return 1 if the sensor is enabled
122  */
123 static int
124 status(int type)
125 {
126  switch(type) {
127  case SENSORS_ACTIVE:
128  case SENSORS_READY:
129  return enabled;
130  break;
131  default:
132  break;
133  }
134  return SENSOR_STATUS_DISABLED;
135 }
136 /*---------------------------------------------------------------------------*/
137 SENSORS_SENSOR(batmon_sensor, "Battery Monitor", value, configure, status);
138 /*---------------------------------------------------------------------------*/
139 /** @} */
Header file with macros which rename TI CC26xxware functions.
static int status(int type)
Returns the status of the sensor.
Header file for the CC13xx/CC26xx battery monitor.
static int value(int type)
Returns a reading from the sensor.
Definition: batmon-sensor.c:67
static int configure(int type, int enable)
Configuration function for the battery monitor sensor.
Definition: batmon-sensor.c:96