Contiki-NG
board.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 sensortag-cc26xx-peripherals
33  * @{
34  *
35  * \file
36  * Sensortag-specific board initialisation driver
37  */
38 /*---------------------------------------------------------------------------*/
39 #include "contiki.h"
40 #include "lib/sensors.h"
41 #include "buzzer.h"
42 #include "lpm.h"
43 #include "ti-lib.h"
44 #include "board-peripherals.h"
45 #include "board-i2c.h"
46 
47 #include <stdint.h>
48 #include <string.h>
49 #include <stdbool.h>
50 /*---------------------------------------------------------------------------*/
51 static void
52 power_domains_on(void)
53 {
54  /* Turn on the PERIPH PD */
55  ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
56 
57  /* Wait for domains to power on */
58  while((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
59  != PRCM_DOMAIN_POWER_ON));
60 }
61 /*---------------------------------------------------------------------------*/
62 static void
63 lpm_wakeup_handler(void)
64 {
65  power_domains_on();
66 }
67 /*---------------------------------------------------------------------------*/
68 static void
69 shutdown_handler(uint8_t mode)
70 {
71  if(mode == LPM_MODE_SHUTDOWN) {
72  buzzer_stop();
73  SENSORS_DEACTIVATE(bmp_280_sensor);
74  SENSORS_DEACTIVATE(opt_3001_sensor);
75  SENSORS_DEACTIVATE(tmp_007_sensor);
76  SENSORS_DEACTIVATE(hdc_1000_sensor);
77  SENSORS_DEACTIVATE(mpu_9250_sensor);
78  ti_lib_gpio_clear_dio(BOARD_IOID_MPU_POWER);
79  }
80 
81  /* In all cases, stop the I2C */
83 }
84 /*---------------------------------------------------------------------------*/
85 /*
86  * Declare a data structure to register with LPM.
87  * We don't care about what power mode we'll drop to, we don't care about
88  * getting notified before deep sleep. All we need is to be notified when we
89  * wake up so we can turn power domains back on for I2C and SSI, and to make
90  * sure everything on the board is off before CM3 shutdown.
91  */
92 LPM_MODULE(sensortag_module, NULL, shutdown_handler, lpm_wakeup_handler,
93  LPM_DOMAIN_NONE);
94 /*---------------------------------------------------------------------------*/
95 static void
96 configure_unused_pins(void)
97 {
98  /* DP[0..3] */
99  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DP0);
100  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DP0, IOC_IOPULL_DOWN);
101  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DP1);
102  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DP1, IOC_IOPULL_DOWN);
103  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DP2);
104  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DP2, IOC_IOPULL_DOWN);
105  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DP3);
106  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DP3, IOC_IOPULL_DOWN);
107 
108  /* Devpack ID */
109  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DEVPK_ID);
110  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DEVPK_ID, IOC_IOPULL_UP);
111 
112  /* Digital Microphone */
113  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_MIC_POWER);
114  ti_lib_gpio_clear_dio(BOARD_IOID_MIC_POWER);
115  ti_lib_ioc_io_drv_strength_set(BOARD_IOID_MIC_POWER, IOC_CURRENT_2MA,
116  IOC_STRENGTH_MIN);
117 
118  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_AUDIO_DI);
119  ti_lib_ioc_io_port_pull_set(BOARD_IOID_AUDIO_DI, IOC_IOPULL_DOWN);
120  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_AUDIO_CLK);
121  ti_lib_ioc_io_port_pull_set(BOARD_IOID_AUDIO_CLK, IOC_IOPULL_DOWN);
122 
123  /* UART over Devpack - TX only (ToDo: Map all UART pins to Debugger) */
124  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_DP5_UARTTX);
125  ti_lib_ioc_io_port_pull_set(BOARD_IOID_DP5_UARTTX, IOC_IOPULL_DOWN);
126 }
127 /*---------------------------------------------------------------------------*/
128 void
130 {
131  /* Disable global interrupts */
132  bool int_disabled = ti_lib_int_master_disable();
133 
134  power_domains_on();
135 
136  /* Enable GPIO peripheral */
137  ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
138 
139  /* Apply settings and wait for them to take effect */
140  ti_lib_prcm_load_set();
141  while(!ti_lib_prcm_load_get());
142 
143  /* I2C controller */
145 
146  buzzer_init();
147 
148  /* Make sure the external flash is in the lower power mode */
149  ext_flash_init(NULL);
150 
151  lpm_register_module(&sensortag_module);
152 
153  /* For unsupported peripherals, select a default pin configuration */
154  configure_unused_pins();
155 
156  /* Re-enable interrupt if initially enabled. */
157  if(!int_disabled) {
158  ti_lib_int_master_enable();
159  }
160 }
161 /*---------------------------------------------------------------------------*/
162 /** @} */
void board_i2c_shutdown()
Stops the I2C peripheral and restores pins to s/w control.
Definition: board-i2c.c:114
Header file with definitions related to the sensors on the Sensortags.
Header file for the Sensortag Buzzer.
Header file with macros which rename TI CC26xxware functions.
void buzzer_stop()
Stop the buzzer.
Definition: buzzer.c:106
Header file for the Sensortag I2C Driver.
void buzzer_init()
Initialise the buzzer.
Definition: buzzer.c:52
#define BOARD_IOID_MIC_POWER
Digital Microphone.
Definition: board.h:209
void board_init()
Board specific iniatialisation.
Definition: board.c:80
bool ext_flash_init(const spi_device_t *conf)
Initialise the external flash.
Definition: ext-flash.c:527
#define LPM_MODULE(n, m, s, w, l)
Declare a variable to be used in order to get notifications from LPM.
Definition: lpm.h:92
void board_i2c_wakeup()
Enables the I2C peripheral with defaults.
Definition: board-i2c.c:83
const struct sensors_sensor bmp_280_sensor
Exports a global symbol to be used by the sensor API.
void lpm_register_module(lpm_registered_module_t *module)
Register a module for LPM notifications.
Definition: lpm.c:539