LPCOpen Platform for LPC18XX/43XX microcontrollers: C:/w/lpcopen_docs/software/lpc_core/lpc_chip/chip_18xx_43xx/wwdt_18xx_43xx.h Source File

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wwdt_18xx_43xx.h
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1 /*
2 * @brief LPC18xx/43xx WWDT driver
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2012
6 * All rights reserved.
7 *
8 * @par
9 * Software that is described herein is for illustrative purposes only
10 * which provides customers with programming information regarding the
11 * LPC products. This software is supplied "AS IS" without any warranties of
12 * any kind, and NXP Semiconductors and its licensor disclaim any and
13 * all warranties, express or implied, including all implied warranties of
14 * merchantability, fitness for a particular purpose and non-infringement of
15 * intellectual property rights. NXP Semiconductors assumes no responsibility
16 * or liability for the use of the software, conveys no license or rights under any
17 * patent, copyright, mask work right, or any other intellectual property rights in
18 * or to any products. NXP Semiconductors reserves the right to make changes
19 * in the software without notification. NXP Semiconductors also makes no
20 * representation or warranty that such application will be suitable for the
21 * specified use without further testing or modification.
22 *
23 * @par
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, under NXP Semiconductors' and its
26 * licensor's relevant copyrights in the software, without fee, provided that it
27 * is used in conjunction with NXP Semiconductors microcontrollers. This
28 * copyright, permission, and disclaimer notice must appear in all copies of
29 * this code.
30 */
31
32 #ifndef __WWDT_18XX_43XX_H_
33 #define __WWDT_18XX_43XX_H_
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38
44 #define WATCHDOG_WINDOW_SUPPORT
45
47 #define WDT_OSC (CGU_IRC_FREQ)
48
52 typedef struct {
53 __IO uint32_t MOD;
54 __IO uint32_t TC;
55 __O uint32_t FEED;
56 __I uint32_t TV;
57 __I uint32_t RESERVED0;
58 #ifdef WATCHDOG_WINDOW_SUPPORT
59 __IO uint32_t WARNINT;
60 __IO uint32_t WINDOW;
61 #endif
62 } LPC_WWDT_T;
63
68 #define WWDT_WDMOD_BITMASK ((uint32_t) 0x1F)
69
70 #define WWDT_WDMOD_WDEN ((uint32_t) (1 << 0))
71
72 #define WWDT_WDMOD_WDRESET ((uint32_t) (1 << 1))
73
74 #define WWDT_WDMOD_WDTOF ((uint32_t) (1 << 2))
75
76 #define WWDT_WDMOD_WDINT ((uint32_t) (1 << 3))
77
78 #define WWDT_WDMOD_WDPROTECT ((uint32_t) (1 << 4))
79
85 void Chip_WWDT_Init(LPC_WWDT_T *pWWDT);
86
92 void Chip_WWDT_DeInit(LPC_WWDT_T *pWWDT);
93
100 STATIC INLINE void Chip_WWDT_SetTimeOut(LPC_WWDT_T *pWWDT, uint32_t timeout)
101 {
102 pWWDT->TC = timeout;
103 }
104
112 STATIC INLINE void Chip_WWDT_Feed(LPC_WWDT_T *pWWDT)
113 {
114 pWWDT->FEED = 0xAA;
115 pWWDT->FEED = 0x55;
116 }
117
118 #if defined(WATCHDOG_WINDOW_SUPPORT)
119
127 STATIC INLINE void Chip_WWDT_SetWarning(LPC_WWDT_T *pWWDT, uint32_t timeout)
128 {
129 pWWDT->WARNINT = timeout;
130 }
131
141 STATIC INLINE void Chip_WWDT_SetWindow(LPC_WWDT_T *pWWDT, uint32_t timeout)
142 {
143 pWWDT->WINDOW = timeout;
144 }
145
146 #endif
147
159 STATIC INLINE void Chip_WWDT_SetOption(LPC_WWDT_T *pWWDT, uint32_t options)
160 {
161 pWWDT->MOD |= options;
162 }
163
173 STATIC INLINE void Chip_WWDT_UnsetOption(LPC_WWDT_T *pWWDT, uint32_t options)
174 {
175 pWWDT->MOD &= (~options) & WWDT_WDMOD_BITMASK;
176 }
177
183 STATIC INLINE void Chip_WWDT_Start(LPC_WWDT_T *pWWDT)
184 {
185 Chip_WWDT_SetOption(pWWDT, WWDT_WDMOD_WDEN);
186 Chip_WWDT_Feed(pWWDT);
187 }
188
194 STATIC INLINE uint32_t Chip_WWDT_GetStatus(LPC_WWDT_T *pWWDT)
195 {
196 return pWWDT->MOD;
197 }
198
207 void Chip_WWDT_ClearStatusFlag(LPC_WWDT_T *pWWDT, uint32_t status);
208
214 STATIC INLINE uint32_t Chip_WWDT_GetCurrentCount(LPC_WWDT_T *pWWDT)
215 {
216 return pWWDT->TV;
217 }
218
223 #ifdef __cplusplus
224 }
225 #endif
226
227 #endif /* __WWDT_18XX_43XX_H_ */