nu_wwdt.h 4.2 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118
  1. /**************************************************************************//**
  2. * @file wwdt.h
  3. * @brief NUC980 WWDT driver header file
  4. *
  5. * SPDX-License-Identifier: Apache-2.0
  6. * @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
  7. *****************************************************************************/
  8. #ifndef __NU_WWDT_H__
  9. #define __NU_WWDT_H__
  10. #include "nuc980.h"
  11. #ifdef __cplusplus
  12. extern "C"
  13. {
  14. #endif
  15. /** @addtogroup Standard_Driver Standard Driver
  16. @{
  17. */
  18. /** @addtogroup WWDT_Driver WWDT Driver
  19. @{
  20. */
  21. /** @addtogroup WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
  22. @{
  23. */
  24. #define WWDT_PRESCALER_1 (0UL << 8) ///< WWDT setting prescaler to 1 \hideinitializer
  25. #define WWDT_PRESCALER_2 (1UL << 8) ///< WWDT setting prescaler to 2 \hideinitializer
  26. #define WWDT_PRESCALER_4 (2UL << 8) ///< WWDT setting prescaler to 4 \hideinitializer
  27. #define WWDT_PRESCALER_8 (3UL << 8) ///< WWDT setting prescaler to 8 \hideinitializer
  28. #define WWDT_PRESCALER_16 (4UL << 8) ///< WWDT setting prescaler to 16 \hideinitializer
  29. #define WWDT_PRESCALER_32 (5UL << 8) ///< WWDT setting prescaler to 32 \hideinitializer
  30. #define WWDT_PRESCALER_64 (6UL << 8) ///< WWDT setting prescaler to 64 \hideinitializer
  31. #define WWDT_PRESCALER_128 (7UL << 8) ///< WWDT setting prescaler to 128 \hideinitializer
  32. #define WWDT_PRESCALER_192 (8UL << 8) ///< WWDT setting prescaler to 192 \hideinitializer
  33. #define WWDT_PRESCALER_256 (9UL << 8) ///< WWDT setting prescaler to 256 \hideinitializer
  34. #define WWDT_PRESCALER_384 (0xAUL << 8) ///< WWDT setting prescaler to 384 \hideinitializer
  35. #define WWDT_PRESCALER_512 (0xBUL << 8) ///< WWDT setting prescaler to 512 \hideinitializer
  36. #define WWDT_PRESCALER_768 (0xCUL << 8) ///< WWDT setting prescaler to 768 \hideinitializer
  37. #define WWDT_PRESCALER_1024 (0xDUL << 8) ///< WWDT setting prescaler to 1024 \hideinitializer
  38. #define WWDT_PRESCALER_1536 (0xEUL << 8) ///< WWDT setting prescaler to 1536 \hideinitializer
  39. #define WWDT_PRESCALER_2048 (0xFUL << 8) ///< WWDT setting prescaler to 2048 \hideinitializer
  40. #define WWDT_RELOAD_WORD (0x00005AA5) ///< Fill this value to RLD register to reload WWDT counter \hideinitializer
  41. /*@}*/ /* end of group WWDT_EXPORTED_CONSTANTS */
  42. /** @addtogroup WWDT_EXPORTED_FUNCTIONS WWDT Exported Functions
  43. @{
  44. */
  45. /**
  46. * @brief This macro clear WWDT time-out reset system flag.
  47. * @return None
  48. * \hideinitializer
  49. */
  50. #define WWDT_CLEAR_RESET_FLAG() outpw(REG_WWDT_STATUS, 0x2)
  51. /**
  52. * @brief This macro clear WWDT compare match interrupt flag.
  53. * @return None
  54. * \hideinitializer
  55. */
  56. #define WWDT_CLEAR_INT_FLAG() outpw(REG_WWDT_STATUS, 0x1)
  57. /**
  58. * @brief This macro is use to get WWDT time-out reset system flag.
  59. * @return WWDT reset system or not
  60. * @retval 0 WWDT did not cause system reset
  61. * @retval 1 WWDT caused system reset
  62. * \hideinitializer
  63. */
  64. #define WWDT_GET_RESET_FLAG() (inpw(REG_WWDT_STATUS) & 0x2 ? 1 : 0)
  65. /**
  66. * @brief This macro is used to indicate WWDT compare match interrupt flag.
  67. * @return WWDT compare match interrupt occurred or not
  68. * @retval 0 WWDT compare match interrupt did not occur
  69. * @retval 1 WWDT compare match interrupt occurred
  70. * \hideinitializer
  71. */
  72. #define WWDT_GET_INT_FLAG() (inpw(REG_WWDT_STATUS) & 0x1 ? 1 : 0)
  73. /**
  74. * @brief This macro to reflects current WWDT counter value
  75. * @return Return current WWDT counter value
  76. * \hideinitializer
  77. */
  78. #define WWDT_GET_COUNTER() inpw(REG_WWDT_CNT)
  79. /**
  80. * @brief This macro is used to reload the WWDT counter value to 0x3F.
  81. * @return None
  82. * @details After WWDT enabled, application must reload WWDT counter while
  83. * current counter is less than compare value and larger than 0,
  84. * otherwise WWDT will cause system reset.
  85. * \hideinitializer
  86. */
  87. #define WWDT_RELOAD_COUNTER() outpw(REG_WWDT_RLDCNT, WWDT_RELOAD_WORD)
  88. void WWDT_Open(UINT u32PreScale, UINT u32CmpValue, UINT u32EnableInt);
  89. /*@}*/ /* end of group WWDT_EXPORTED_FUNCTIONS */
  90. /*@}*/ /* end of group WWDT_Driver */
  91. /*@}*/ /* end of group Standard_Driver */
  92. #ifdef __cplusplus
  93. }
  94. #endif
  95. #endif //__NU_WWDT_H__