Contiki-NG
watchdog.c
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1 /*
2  * Copyright (c) 2015, Nordic Semiconductor
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 Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  */
30 /**
31  * \addtogroup nrf52840-dev Device drivers
32  * @{
33  *
34  * \addtogroup nrf52840-watchdog Watchdog driver
35  * @{
36  *
37  * \file
38  * Contiki compatible watchdog driver implementation.
39  * \author
40  * Wojciech Bober <wojciech.bober@nordicsemi.no>
41  */
42 #include "contiki.h"
43 #include <nrfx_wdt.h>
44 #include "app_error.h"
45 
46 #include "sys/log.h"
47 #define LOG_MODULE "WATCHDOG"
48 #define LOG_LEVEL LOG_LEVEL_INFO
49 
50 static nrfx_wdt_channel_id wdt_channel_id;
51 static uint8_t wdt_initialized = 0;
52 
53 /**
54  * \brief WDT events handler.
55  */
56 static void
58 {
59  LEDS_OFF(LEDS_MASK);
60 }
61 /*---------------------------------------------------------------------------*/
62 void
64 {
65  ret_code_t err_code;
66  nrfx_wdt_config_t config = NRFX_WDT_DEAFULT_CONFIG;
67  err_code = nrfx_wdt_init(&config, &wdt_event_handler);
68  APP_ERROR_CHECK(err_code);
69  err_code = nrfx_wdt_channel_alloc(&wdt_channel_id);
70  APP_ERROR_CHECK(err_code);
71  wdt_initialized = 1;
72 }
73 /*---------------------------------------------------------------------------*/
74 void
76 {
77  if(wdt_initialized) {
78  nrfx_wdt_enable();
79  }
80 }
81 /*---------------------------------------------------------------------------*/
82 void
84 {
85  if(wdt_initialized) {
86  nrfx_wdt_channel_feed(wdt_channel_id);
87  }
88 }
89 /*---------------------------------------------------------------------------*/
90 void
92 {
93  NVIC_SystemReset();
94 }
95 /**
96  * @}
97  * @}
98  */
void watchdog_reboot(void)
Keeps control until the WDT throws a reset signal.
Definition: watchdog.c:94
static void wdt_event_handler(void)
WDT events handler.
Definition: watchdog.c:57
void watchdog_start(void)
Starts the WDT in watchdog mode if enabled by user configuration, maximum interval.
Definition: watchdog.c:72
static int config(int type, int c, nrf_drv_gpiote_pin_t pin)
Configuration function for the button sensor for all buttons.
void watchdog_init(void)
Initialisation function for the WDT.
Definition: watchdog.c:63
void watchdog_periodic(void)
Writes the WDT clear sequence.
Definition: watchdog.c:85
Header file for the logging system