Contiki-NG
als-sensor.c
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1 /*
2  * Copyright (c) 2016, University of Bristol - http://www.bris.ac.uk/
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
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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
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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 srf06-common-peripherals
33  * @{
34  *
35  * \file
36  * Driver for the SmartRF06EB ALS when a CC13xx/CC26xxEM is mounted on it
37  */
38 /*---------------------------------------------------------------------------*/
39 #include "contiki.h"
40 #include "lib/sensors.h"
41 #include "srf06/als-sensor.h"
42 #include "sys/timer.h"
43 #include "dev/adc-sensor.h"
44 #include "dev/aux-ctrl.h"
45 
46 #include "ti-lib.h"
47 
48 #include <stdint.h>
49 /*---------------------------------------------------------------------------*/
50 static aux_consumer_module_t als_aux = {
51  .clocks = AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK
52 };
53 /*---------------------------------------------------------------------------*/
54 static int
55 config(int type, int enable)
56 {
57  switch(type) {
58  case SENSORS_HW_INIT:
59  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
60  break;
61  case SENSORS_ACTIVE:
62  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
63  ti_lib_ioc_port_configure_set(BOARD_IOID_ALS_OUT, IOC_PORT_GPIO,
64  IOC_STD_OUTPUT);
65  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_ALS_OUT);
66 
67  if(enable) {
68  ti_lib_gpio_set_dio(BOARD_IOID_ALS_PWR);
70  ti_lib_aux_adc_select_input(ADC_COMPB_IN_AUXIO7);
71  clock_delay_usec(2000);
72  } else {
73  ti_lib_gpio_clear_dio(BOARD_IOID_ALS_PWR);
75  }
76  break;
77  default:
78  break;
79  }
80  return 1;
81 }
82 /*---------------------------------------------------------------------------*/
83 static int
84 value(int type)
85 {
86  int val;
87 
88  ti_lib_aux_adc_enable_sync(AUXADC_REF_VDDS_REL, AUXADC_SAMPLE_TIME_2P7_US,
89  AUXADC_TRIGGER_MANUAL);
90  ti_lib_aux_adc_gen_manual_trigger();
91  val = ti_lib_aux_adc_read_fifo();
92  ti_lib_aux_adc_disable();
93 
94  return val;
95 }
96 /*---------------------------------------------------------------------------*/
97 static int
98 status(int type)
99 {
100  return 1;
101 }
102 /*---------------------------------------------------------------------------*/
103 SENSORS_SENSOR(als_sensor, ALS_SENSOR, value, config, status);
104 /*---------------------------------------------------------------------------*/
105 /** @} */
void aux_ctrl_unregister_consumer(aux_consumer_module_t *consumer)
Deregister a module that no longer requires access to the AUX power domain.
Definition: aux-ctrl.c:61
Header file with macros which rename TI CC26xxware functions.
void clock_delay_usec(uint16_t dt)
Delay a given number of microseconds.
Definition: clock.c:150
Timer library header file.
Header file for the CC13xx/CC26xx ADC driver.
Header file for the management of the CC13xx/CC26xx AUX domain.
void aux_ctrl_register_consumer(aux_consumer_module_t *consumer)
Register a module that no longer requires access to the AUX power domain.
Definition: aux-ctrl.c:44
static int config(int type, int c, nrf_drv_gpiote_pin_t pin)
Configuration function for the button sensor for all buttons.
The data structure to be used for modules that require access to AUX.
Definition: aux-ctrl.h:62
const struct sensors_sensor als_sensor
Exports a global symbol to be used by the sensor API.