1 /**
2 * @file xmc_wdt.c
3 * @date 2015-06-20
4 *
5 * @cond
6 *********************************************************************************************************************
7 * XMClib v2.1.24 - XMC Peripheral Driver Library
8 *
9 * Copyright (c) 2015-2019, Infineon Technologies AG
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without modification,are permitted provided that the
13 * following conditions are met:
14 *
15 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
19 * disclaimer in the documentation and/or other materials provided with the distribution.
20 *
21 * Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote
22 * products derived from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with
33 * Infineon Technologies AG dave@infineon.com).
34 *********************************************************************************************************************
35 *
36 * Change History
37 * --------------
38 *
39 * 2015-02-20:
40 * - Initial <br>
41 *
42 * 2015-06-20:
43 * - Removed definition of GetDriverVersion API <br>
44 *
45 * @endcond
46 */
47
48 /*********************************************************************************************************************
49 * HEADER FILES
50 ********************************************************************************************************************/
51 #include "xmc_wdt.h"
52 #include "xmc_scu.h"
53
54 /*********************************************************************************************************************
55 * API IMPLEMENTATION
56 ********************************************************************************************************************/
57
58 /* Enables watchdog clock and releases watchdog reset. */
XMC_WDT_Enable(void)59 void XMC_WDT_Enable(void)
60 {
61 #if UC_FAMILY == XMC4
62 XMC_SCU_CLOCK_EnableClock(XMC_SCU_CLOCK_WDT);
63 #endif
64
65 #if defined(CLOCK_GATING_SUPPORTED)
66 XMC_SCU_CLOCK_UngatePeripheralClock(XMC_SCU_PERIPHERAL_CLOCK_WDT);
67 #endif
68 #if defined(PERIPHERAL_RESET_SUPPORTED)
69 XMC_SCU_RESET_DeassertPeripheralReset(XMC_SCU_PERIPHERAL_RESET_WDT);
70 #endif
71 }
72
73 /* Disables watchdog clock and resets watchdog. */
XMC_WDT_Disable(void)74 void XMC_WDT_Disable(void)
75 {
76 #if defined(PERIPHERAL_RESET_SUPPORTED)
77 XMC_SCU_RESET_AssertPeripheralReset(XMC_SCU_PERIPHERAL_RESET_WDT);
78 #endif
79 #if defined(CLOCK_GATING_SUPPORTED)
80 XMC_SCU_CLOCK_GatePeripheralClock(XMC_SCU_PERIPHERAL_CLOCK_WDT);
81 #endif
82
83 #if UC_FAMILY == XMC4
84 XMC_SCU_CLOCK_DisableClock(XMC_SCU_CLOCK_WDT);
85 #endif
86 }
87 /* Initializes and configures watchdog with configuration data pointed by \a config. */
XMC_WDT_Init(const XMC_WDT_CONFIG_t * const config)88 void XMC_WDT_Init(const XMC_WDT_CONFIG_t *const config)
89 {
90 XMC_WDT_Enable();
91 WDT->CTR = config->wdt_ctr;
92 WDT->WLB = config->window_lower_bound;
93 WDT->WUB = config->window_upper_bound;
94 }
95
