amiro-blt / Target / Source / AMiRo / interfaces.h @ 2654b32c
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/**
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* @file interfaces.h
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* @brief Interfaces to access and interpret information of the bootloader by an operating system.
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*
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* @addtogroup AMiRo-BLT
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* @details Data structures and constants to interfere with the bootloader form an operating system.
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* @{
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*/
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#ifndef BL_INTERFACES_H
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#define BL_INTERFACES_H
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#include <stdint.h> |
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/*===========================================================================*/
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/**
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* @defgroup AMiRo-BLT-IF Bootloader Interface
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* @details This interface can be used to interface the AMiRo bootloader from an operating system.
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*
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* @{
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*/
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/*===========================================================================*/
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/*===========================================================================*/
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/**
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* @name Callback Table
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* @details The callback table is a static struct, located at address @ref BL_CALLBACK_TABLE_ADDRESS in the MCUs flash memory (ROM).
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* It contains version information and a bunch of callback function pointers.
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*/
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///@{
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/**
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* @brief The memory address where the @ref BlCallbackTable struct is located in flash memory.
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* @note This address must correspond with the @p _callback_table section in file @p memory.x of the bootloader.
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*/
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#define BL_CALLBACK_TABLE_ADDRESS (uint32_t)(0x08000000u + 0x01C0u) |
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/**
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* @brief A magic number to detect whether the callback table exists.
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*/
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#define BL_MAGIC_NUMBER ((uint32_t)0xFF669900u) |
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/**
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* @brief The major version number of the bootloader.
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*/
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#define BL_VERSION_MAJOR 0 |
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/**
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* @brief The minor version number of the bootloader.
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*/
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#define BL_VERSION_MINOR 3 |
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/**
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* @brief The major version number of the implemented SSSP (Startup & Synchronization Protocol).
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*/
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#define SSSP_VERSION_MAJOR 1 |
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/**
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* @brief The minor version number of the implemented SSSP (Startup & Synchronization Protocol).
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*/
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#define SSSP_VERSION_MINOR 1 |
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/**
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* @brief This struct contains information about the bootloader version and pointers to several callback function.
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* It is located at the constant address @ref BL_CALLBACK_TABLE_ADDRESS in the flash memory.
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* @note Sicne the actual implementations of the callback functions are optional, the pointers must be checked not to be @p NULL before use!
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*/
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struct BlCallbackTable {
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const uint32_t magicNumber; /**< A magic number that can be used for sanity checks. @sa BL_MAGIC_NUMBER */ |
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const uint32_t versionMajor; /**< The major version number of the bootloader. @sa BL_VERSION_MAJOR */ |
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const uint32_t versionMinor; /**< The minor version number of the bootloader. @sa BL_VERSION_MINOR */ |
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const uint32_t versionHotfix; /**< The hotfix indicator of the bootloader. */ |
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/**
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* @brief Callback function pointer to enter hibernate mode.
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* @details In hibernate mode, the system enters maximum power-saving mode, but will wake up periodically in order to read some sensors.
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*/
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void (*const cbShutdownHibernate)(void); |
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/**
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* @brief Callback function pointer to enter deepsleep mode.
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* @details In deepsleep mode, the system enters maximum power-saving mode, but basic sensors (e.g. charging plug) can wake the system.
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*/
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void (*const cbShutdownDeepsleep)(void); |
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/**
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* @brief Callback function pointer to enter transportation mode.
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* @details In transportation mode, the system enters maximum power-saving mode and all wakeup signals are deactivated.
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* Thus, the only way to reactivate the system will be a hard reset.
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*/
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void (*const cbShutdownTransportation)(void); /**< Callback function pointer to enter transportation mode. */ |
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/**
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* @brief Callback function pointer to restart the system.
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*/
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void (*const cbShutdownRestart)(void); |
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/**
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* @brief Callback function pointer to handle a shutdown request from another module.
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* @details Depending on the result of the disambiguation procedure, the module will enter the requested low-power mode.
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*/
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void (*const cbHandleShutdownRequest)(void); |
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void (*const cb5)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb6)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb7)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb8)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb9)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb10)(void); /**< Reserved but currently unused callback function pointer. */ |
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void (*const cb11)(void); /**< Reserved but currently unused callback function pointer. */ |
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}; |
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/**
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* @brief Synonym for simplified access.
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*/
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typedef struct BlCallbackTable BlCallbackTable; |
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///@}
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/*===========================================================================*/
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/*===========================================================================*/
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/**
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* @name Backup Register
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* @details For the STM32F4 MCU (PowerManagement), the backup register contains additional information about the last shutdown and wakeup of the system.
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*/
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///@{
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/**
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* @brief Number of the RTC backup register in which some persistent information is stored.
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* @note In the RTC section of the STM32F4 reference manual, the RTC backup registers are named @p RTC_BKPxR, where x is the register number.
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*/
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#define BL_RTC_BACKUP_REG 0 |
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/**
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* @brief This union is used for interpretation of the content of the backup register.
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*/
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union BlBackupRegister {
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/**
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* @brief The raw data of the register.
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*/
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uint32_t raw; |
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/**
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* @brief A struct to interpret the content of the register.
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*/
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struct {
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/**
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* @brief The primary reason for the last system shutdown.
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* @note The content of this member is enum-like.
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* @sa BL_SHUTDOWN_PRI_RSN_UNKNOWN, BL_SHUTDOWN_PRI_RSN_HIBERNATE, BL_SHUTDOWN_PRI_RSN_DEEPSLEEP, BL_SHUTDOWN_PRI_RSN_TRANSPORT, BL_SHUTDOWN_PRI_RSN_RESTART
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*/
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uint8_t shutdown_pri_reason; |
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/**
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* @brief The secondary reason for the last system shutdown.
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* @note The content of this member is enum-like.
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* @sa BL_SHUTDOWN_SEC_RSN_UNKNOWN
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*/
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uint8_t shutdown_sec_reason; |
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/**
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* @brief The primary reason for the last system wakeup.
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* @note The content of this member is bitmask-like.
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* @sa BL_WAKEUP_PRI_RSN_UNKNOWN, BL_WAKEUP_PRI_RSN_LPWRRST, BL_WAKEUP_PRI_RSN_WWDGRST, BL_WAKEUP_PRI_RSN_IWDGRST, BL_WAKEUP_PRI_RSN_SFTRST, BL_WAKEUP_PRI_RSN_PORRST, BL_WAKEUP_PRI_RSN_PINRST, BL_WAKEUP_PRI_RSN_BORRST, BL_WAKEUP_PRI_RSN_WKUP
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*/
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uint8_t wakeup_pri_reason; |
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/**
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* @brief The secondary reason for the last system wakeup.
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* @note The content of this member is bitmask-like.
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* @sa BL_WAKEUP_SEC_RSN_UNKNOWN, BL_WAKEUP_SEC_RSN_UART, BL_WAKEUP_SEC_RSN_PWRPLUG, BL_WAKEUP_SEC_RSN_VSYSHIGH, BL_WAKEUP_SEC_RSN_VSYSLOW, BL_WAKEUP_SEC_RSN_TOUCH, BL_WAKEUP_SEC_RSN_ACCEL, BL_WAKEUP_SEC_RSN_RSVD
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*/
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uint8_t wakeup_sec_reason; |
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}; |
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}; |
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typedef union BlBackupRegister BlBackupRegister; |
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/**
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* @brief The reason was not set or the register was reset.
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*/
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#define BL_SHUTDOWN_PRI_RSN_UNKNOWN 0x00u |
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/**
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* @brief The system was shut down to enter hibernate mode.
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*/
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#define BL_SHUTDOWN_PRI_RSN_HIBERNATE 0x01u |
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/**
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* @brief The system was shut down to enter deepsleep mode.
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*/
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#define BL_SHUTDOWN_PRI_RSN_DEEPSLEEP 0x02u |
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/**
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* @brief The system was shut down to enter transportation mode.
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*/
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#define BL_SHUTDOWN_PRI_RSN_TRANSPORT 0x03u |
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/**
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* @brief The system was shut down to restart.
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*/
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#define BL_SHUTDOWN_PRI_RSN_RESTART 0x04u |
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/**
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* @brief The default shutdown mode.
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* @details This mode is used, if the shutdown sequence was triggered by another module than the PowerManagement.
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*/
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#define BL_SHUTDOWN_PRI_RSN_DEFAULT BL_SHUTDOWN_PRI_RSN_DEEPSLEEP
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/**
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* @brief The reason was not set or the regsiter was reset.
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*/
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#define BL_SHUTDOWN_SEC_RSN_UNKNOWN 0x00u |
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/**
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* @brief The reason could not be determined.
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*/
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#define BL_WAKEUP_PRI_RSN_UNKNOWN 0x00u |
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/**
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* @brief The system was reset because of the low-power management configuration.
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*/
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#define BL_WAKEUP_PRI_RSN_LPWRRST 0x01u |
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/**
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* @brief The system was woken by the window watchdog.
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*/
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#define BL_WAKEUP_PRI_RSN_WWDGRST 0x02u |
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/**
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* @brief The system was woken by the independant watchdog.
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*/
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#define BL_WAKEUP_PRI_RSN_IWDGRST 0x04u |
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/**
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* @brief The system was reset by software.
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*/
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#define BL_WAKEUP_PRI_RSN_SFTRST 0x08u |
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/**
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* @brief The system was woken by a power-on/power-down reset.
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*/
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#define BL_WAKEUP_PRI_RSN_PORRST 0x10u |
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/**
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* @brief The system was reset via the NRST pin.
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*/
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#define BL_WAKEUP_PRI_RSN_PINRST 0x20u |
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/**
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* @brief The system was woken by a power-on/power-down, or a brownout reset.
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*/
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#define BL_WAKEUP_PRI_RSN_BORRST 0x40u |
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/**
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* @brief The system was woken via the WKUP pin.
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*/
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#define BL_WAKEUP_PRI_RSN_WKUP 0x80u |
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/**
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* @brief The reason could not be determined.
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*/
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#define BL_WAKEUP_SEC_RSN_UNKNOWN 0x00u |
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/**
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* @brief The WKUP pin was triggered by the UART signal.
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*/
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#define BL_WAKEUP_SEC_RSN_UART 0x01u |
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/**
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* @brief The WKUP pin was triggered by plugging in a power plug.
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*/
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#define BL_WAKEUP_SEC_RSN_PWRPLUG 0x02u |
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/**
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* @brief The internal ADC detected a system voltage higher than the configured threshold.
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* @note Usually the threshold is set to 9V.
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*/
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#define BL_WAKEUP_SEC_RSN_VSYSHIGH 0x04u |
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/**
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* @brief The internal ADC detected a system voltage lower than the configured threshold.
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*/
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#define BL_WAKEUP_SEC_RSN_VSYSLOW 0x08u |
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/**
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* @brief The WKUP pin was triggered by an interrupt from the touch sensors.
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*/
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#define BL_WAKEUP_SEC_RSN_TOUCH 0x10u |
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/**
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* @brief The WKUP pin was triggered by an interrupt from the accelerometer.
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*/
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#define BL_WAKEUP_SEC_RSN_ACCEL 0x20u |
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/**
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* @brief Reserved value that must not be used right now, but might become valid in a future version.
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*/
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#define BL_WAKEUP_SEC_RSN_RSVD 0xC0u |
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///@}
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/** @} */
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#endif // BL_INTERFACES_H |
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/** @} */
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