diff options
Diffstat (limited to 'os/hal/ports/TIVA/LLD/hal_wdg_lld.h')
-rw-r--r-- | os/hal/ports/TIVA/LLD/hal_wdg_lld.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/os/hal/ports/TIVA/LLD/hal_wdg_lld.h b/os/hal/ports/TIVA/LLD/hal_wdg_lld.h new file mode 100644 index 0000000..36244f5 --- /dev/null +++ b/os/hal/ports/TIVA/LLD/hal_wdg_lld.h @@ -0,0 +1,187 @@ +/* + Copyright (C) 2014 Marco Veeneman + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + + +/** + * @file TIVA/wdg_lld.h + * @brief WDG Driver subsystem low level driver header. + * + * @addtogroup WDG + * @{ + */ + +#ifndef _WDG_LLD_H_ +#define _WDG_LLD_H_ + +#if HAL_USE_WDG || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +#define LOCK_UNLOCK 0x1ACCE551U +#define LOCK_LOCK 0x00000000U + +#define LOCK_IS_UNLOCKED 0U +#define LOCK_IS_LOCKED 1U + +#define TEST_STALL (1 << 8) + +#define MIS_WDTMIS (1 << 0) +#define RIS_WDTRIS (1 << 0) +#define ICR_WDTICR (1 << 0) + +#define CTL_INTEN (1 << 0) +#define CTL_RESEN (1 << 1) +#define CTL_INTTYPE (1 << 2) +#define CTL_WRC (1 << 31) + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @name Configuration options + * @{ + */ +/** + * @brief WDT driver enable switch. + * @details If set to @p TRUE the support for WDT is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_WDG_USE_WDT) || defined(__DOXYGEN__) +#define TIVA_WDG_USE_WDT FALSE +#endif + +/** + * @brief WDT interrupt priority level setting. + */ +#if !defined(TIVA_WDG_WDT_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_WDG_WDT_IRQ_PRIORITY 5 +#endif + +/** @} */ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if TIVA_WDG_USE_WDT0 && !TIVA_HAS_WDT0 +#error "WDT0 not present in the selected device" +#endif + +#if TIVA_WDG_USE_WDT1 && !TIVA_HAS_WDT1 +#error "WDT1 not present in the selected device" +#endif + +#if !TIVA_WDG_USE_WDT0 && !TIVA_WDG_USE_WDT1 +#error "WDG driver activated but no WDT peripheral assigned" +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * @brief Type of a structure representing an WDG driver. + */ +typedef struct WDGDriver WDGDriver; + +/** + * @brief WDG timeout callback type. + * + * @param[in] wdgp pointer to the @p WDGDriver object triggering the callback. + */ +typedef bool (*wdgcallback_t)(WDGDriver *wdgp); + +/** + * @brief Driver configuration structure. + * @note It could be empty on some architectures. + */ +typedef struct +{ + /** + * @brief Interval value used by the WDT. + */ + uint32_t load; + /** + * @brief Timeout callback pointer. + * @note This callback is invoked on the first WDT timeout. If set to + * @p NULL then the callback is disabled. + */ + wdgcallback_t callback; + /** + * @brief Test register configuration value. + */ + uint16_t test; +} WDGConfig; + +/** + * @brief Structure representing an WDG driver. + */ +struct WDGDriver +{ + /** + * @brief Driver state. + */ + wdgstate_t state; + /** + * @brief Current configuration data. + */ + const WDGConfig *config; + /* End of the mandatory fields.*/ + /** + * @brief Pointer to the WDT registers block. + */ + WDT_TypeDef *wdt; +}; + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +#if !TIVA_WDG_USE_WDT1 +#define wdgTivaSyncWrite(wdt) +#endif + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#if TIVA_WDG_USE_WDT0 && !defined(__DOXYGEN__) +extern WDGDriver WDGD1; +#endif + +#if TIVA_WDG_USE_WDT1 && !defined(__DOXYGEN__) +extern WDGDriver WDGD2; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + void wdg_lld_init(void); + void wdg_lld_start(WDGDriver *wdgp); + void wdg_lld_stop(WDGDriver *wdgp); + void wdg_lld_reset(WDGDriver *wdgp); +#if TIVA_WDG_USE_WDT1 + void wdgTivaSyncWrite(WDGDriver *wdgp); +#endif +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_WDG */ + +#endif /* _WDG_LLD_H_ */ + +/** @} */ |