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Merge pull request #62 from marcuschangarm/watchdog

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Added watchdog header file from Nordic SDK 8.1
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Rohit Grover 2015-11-09 08:58:24 +00:00
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source/nordic-sdk/components/drivers_nrf/hal/nrf_wdt.h Executable file
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is property of Nordic Semiconductor ASA.
* Terms and conditions of usage are described in detail in NORDIC
* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
*
* Licensees are granted free, non-transferable use of the information. NO
* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
* the file.
*
*/
/**
* @defgroup nrf_wdt_hal WDT HAL
* @{
* @ingroup nrf_wdt
*
* @brief Hardware abstraction layer for accessing the watchdog timer (WDT) peripheral.
*/
#ifndef NRF_WDT_H__
#define NRF_WDT_H__
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#define NRF_WDT_CHANNEL_NUMBER 0x8UL
#define NRF_WDT_RR_VALUE 0x6E524635UL /* Fixed value, shouldn't be modified.*/
#define NRF_WDT_TASK_SET 1UL
#define NRF_WDT_EVENT_CLEAR 0UL
/**
* @enum nrf_wdt_task_t
* @brief WDT tasks.
*/
typedef enum
{
/*lint -save -e30 -esym(628,__INTADDR__)*/
NRF_WDT_TASK_START = offsetof(NRF_WDT_Type, TASKS_START), /**< Task for starting WDT. */
/*lint -restore*/
} nrf_wdt_task_t;
/**
* @enum nrf_wdt_event_t
* @brief WDT events.
*/
typedef enum
{
/*lint -save -e30*/
NRF_WDT_EVENT_TIMEOUT = offsetof(NRF_WDT_Type, EVENTS_TIMEOUT), /**< Event from WDT time-out. */
/*lint -restore*/
} nrf_wdt_event_t;
/**
* @enum nrf_wdt_behaviour_t
* @brief WDT behavior in CPU SLEEP or HALT mode.
*/
typedef enum
{
NRF_WDT_BEHAVIOUR_RUN_SLEEP = WDT_CONFIG_SLEEP_Msk, /**< WDT will run when CPU is in SLEEP mode. */
NRF_WDT_BEHAVIOUR_RUN_HALT = WDT_CONFIG_HALT_Msk, /**< WDT will run when CPU is in HALT mode. */
NRF_WDT_BEHAVIOUR_RUN_SLEEP_HALT = WDT_CONFIG_SLEEP_Msk | WDT_CONFIG_HALT_Msk, /**< WDT will run when CPU is in SLEEP or HALT mode. */
NRF_WDT_BEHAVIOUR_PAUSE_SLEEP_HALT = 0, /**< WDT will be paused when CPU is in SLEEP or HALT mode. */
} nrf_wdt_behaviour_t;
/**
* @enum nrf_wdt_rr_register_t
* @brief WDT reload request registers.
*/
typedef enum
{
NRF_WDT_RR0 = 0, /**< Reload request register 0. */
NRF_WDT_RR1, /**< Reload request register 1. */
NRF_WDT_RR2, /**< Reload request register 2. */
NRF_WDT_RR3, /**< Reload request register 3. */
NRF_WDT_RR4, /**< Reload request register 4. */
NRF_WDT_RR5, /**< Reload request register 5. */
NRF_WDT_RR6, /**< Reload request register 6. */
NRF_WDT_RR7 /**< Reload request register 7. */
} nrf_wdt_rr_register_t;
/**
* @enum nrf_wdt_int_mask_t
* @brief WDT interrupts.
*/
typedef enum
{
NRF_WDT_INT_TIMEOUT_MASK = WDT_INTENSET_TIMEOUT_Msk, /**< WDT interrupt from time-out event. */
} nrf_wdt_int_mask_t;
/**
* @brief Function for configuring the watchdog behavior when the CPU is sleeping or halted.
*
* @param behaviour Watchdog behavior when CPU is in SLEEP or HALT mode.
*/
__STATIC_INLINE void nrf_wdt_behaviour_set(nrf_wdt_behaviour_t behaviour)
{
NRF_WDT->CONFIG = behaviour;
}
/**
* @brief Function for starting the watchdog.
*
* @param[in] task Task.
*/
__STATIC_INLINE void nrf_wdt_task_trigger(nrf_wdt_task_t task)
{
*((volatile uint32_t *)((uint8_t *)NRF_WDT + task)) = NRF_WDT_TASK_SET;
}
/**
* @brief Function for clearing the WDT event.
*
* @param[in] event Event.
*/
__STATIC_INLINE void nrf_wdt_event_clear(nrf_wdt_event_t event)
{
*((volatile uint32_t *)((uint8_t *)NRF_WDT + (uint32_t)event)) = NRF_WDT_EVENT_CLEAR;
}
/**
* @brief Function for retrieving the state of the WDT event.
*
* @param[in] event Event.
*
* @retval true If the event is set.
* @retval false If the event is not set.
*/
__STATIC_INLINE bool nrf_wdt_event_check(nrf_wdt_event_t event)
{
return (bool)*((volatile uint32_t *)((uint8_t *)NRF_WDT + event));
}
/**
* @brief Function for enabling a specific interrupt.
*
* @param[in] int_mask Interrupt.
*/
__STATIC_INLINE void nrf_wdt_int_enable(uint32_t int_mask)
{
NRF_WDT->INTENSET = int_mask;
}
/**
* @brief Function for retrieving the state of given interrupt.
*
* @param[in] int_mask Interrupt.
*
* @retval true Interrupt is enabled.
* @retval false Interrupt is not enabled.
*/
__STATIC_INLINE bool nrf_wdt_int_enable_check(uint32_t int_mask)
{
return (bool)(NRF_WDT->INTENSET & int_mask);
}
/**
* @brief Function for disabling a specific interrupt.
*
* @param[in] int_mask Interrupt.
*/
__STATIC_INLINE void nrf_wdt_int_disable(uint32_t int_mask)
{
NRF_WDT->INTENCLR = int_mask;
}
/**
* @brief Function for returning the address of a specific WDT task register.
*
* @param[in] task Task.
*/
__STATIC_INLINE uint32_t nrf_wdt_task_address_get(nrf_wdt_task_t task)
{
return ((uint32_t)NRF_WDT + task);
}
/**
* @brief Function for returning the address of a specific WDT event register.
*
* @param[in] event Event.
*
* @retval address of requested event register
*/
__STATIC_INLINE uint32_t nrf_wdt_event_address_get(nrf_wdt_event_t event)
{
return ((uint32_t)NRF_WDT + event);
}
/**
* @brief Function for retrieving the watchdog status.
*
* @retval true If the watchdog is started.
* @retval false If the watchdog is not started.
*/
__STATIC_INLINE bool nrf_wdt_started(void)
{
return (bool)(NRF_WDT->RUNSTATUS);
}
/**
* @brief Function for retrieving the watchdog reload request status.
*
* @param[in] rr_register Reload request register to check.
*
* @retval true If a reload request is running.
* @retval false If no reload request is running.
*/
__STATIC_INLINE bool nrf_wdt_request_status(nrf_wdt_rr_register_t rr_register)
{
return (bool)(((NRF_WDT->REQSTATUS) >> rr_register) & 0x1UL);
}
/**
* @brief Function for setting the watchdog reload value.
*
* @param[in] reload_value Watchdog counter initial value.
*/
__STATIC_INLINE void nrf_wdt_reload_value_set(uint32_t reload_value)
{
NRF_WDT->CRV = reload_value;
}
/**
* @brief Function for retrieving the watchdog reload value.
*
* @retval Reload value.
*/
__STATIC_INLINE uint32_t nrf_wdt_reload_value_get(void)
{
return (uint32_t)NRF_WDT->CRV;
}
/**
* @brief Function for enabling a specific reload request register.
*
* @param[in] rr_register Reload request register to enable.
*/
__STATIC_INLINE void nrf_wdt_reload_request_enable(nrf_wdt_rr_register_t rr_register)
{
NRF_WDT->RREN |= 0x1UL << rr_register;
}
/**
* @brief Function for disabling a specific reload request register.
*
* @param[in] rr_register Reload request register to disable.
*/
__STATIC_INLINE void nrf_wdt_reload_request_disable(nrf_wdt_rr_register_t rr_register)
{
NRF_WDT->RREN &= ~(0x1UL << rr_register);
}
/**
* @brief Function for retrieving the status of a specific reload request register.
*
* @param[in] rr_register Reload request register to check.
*
* @retval true If the reload request register is enabled.
* @retval false If the reload request register is not enabled.
*/
__STATIC_INLINE bool nrf_wdt_reload_request_is_enabled(nrf_wdt_rr_register_t rr_register)
{
return (bool)(NRF_WDT->RREN & (0x1UL << rr_register));
}
/**
* @brief Function for setting a specific reload request register.
*
* @param[in] rr_register Reload request register to set.
*/
__STATIC_INLINE void nrf_wdt_reload_request_set(nrf_wdt_rr_register_t rr_register)
{
NRF_WDT->RR[rr_register] = NRF_WDT_RR_VALUE;
}
#endif
/** @} */