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 srf06-common-peripherals
33  * @{
34  *
35  * \file
36  * Board-initialisation for the Srf06EB with a CC13xx/CC26xx EM.
37  */
38 /*---------------------------------------------------------------------------*/
39 #include "contiki.h"
40 #include "ti-lib.h"
41 #include "lpm.h"
42 #include "prcm.h"
43 #include "hw_sysctl.h"
44 
45 #include <stdint.h>
46 #include <string.h>
47 /*---------------------------------------------------------------------------*/
48 static void
49 lpm_handler(uint8_t mode)
50 {
51  /* Ambient light sensor (off, output low) */
52  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
53  ti_lib_gpio_clear_dio(BOARD_IOID_ALS_PWR);
54  ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_ALS_OUT);
55  ti_lib_ioc_io_port_pull_set(BOARD_IOID_ALS_OUT, IOC_NO_IOPULL);
56 }
57 /*---------------------------------------------------------------------------*/
58 static void
59 wakeup_handler(void)
60 {
61  /* Turn on the PERIPH PD */
62  ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
63  while((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
64  != PRCM_DOMAIN_POWER_ON));
65 }
66 /*---------------------------------------------------------------------------*/
67 /*
68  * Declare a data structure to register with LPM.
69  * We don't care about what power mode we'll drop to, we don't care about
70  * getting notified before deep sleep. All we need is to be notified when we
71  * wake up so we can turn power domains back on
72  */
73 LPM_MODULE(srf_module, NULL, lpm_handler, wakeup_handler, LPM_DOMAIN_NONE);
74 /*---------------------------------------------------------------------------*/
75 static void
76 configure_unused_pins(void)
77 {
78  /* Turn off 3.3-V domain (lcd/sdcard power, output low) */
79  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_3V3_EN);
80  ti_lib_gpio_clear_dio(BOARD_IOID_3V3_EN);
81 
82  /* Accelerometer (PWR output low, CSn output, high) */
83  ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ACC_PWR);
84  ti_lib_gpio_clear_dio(BOARD_IOID_ACC_PWR);
85 }
86 /*---------------------------------------------------------------------------*/
87 void
89 {
90  uint8_t int_disabled = ti_lib_int_master_disable();
91 
92  /* Turn on relevant PDs */
93  wakeup_handler();
94 
95  /* Enable GPIO peripheral */
96  ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
97 
98  /* Apply settings and wait for them to take effect */
99  ti_lib_prcm_load_set();
100  while(!ti_lib_prcm_load_get());
101 
102  lpm_register_module(&srf_module);
103 
104  configure_unused_pins();
105 
106  /* Re-enable interrupt if initially enabled. */
107  if(!int_disabled) {
108  ti_lib_int_master_enable();
109  }
110 }
111 /*---------------------------------------------------------------------------*/
112 /** @} */
Header file with macros which rename TI CC26xxware functions.
void board_init()
Board specific iniatialisation.
Definition: board.c:80
#define LPM_MODULE(n, m, s, w, l)
Declare a variable to be used in order to get notifications from LPM.
Definition: lpm.h:96
void lpm_register_module(lpm_registered_module_t *module)
Register a module for LPM notifications.
Definition: lpm.c:545