amiro-blt / Target / Source / AMiRo / amiroblt.h @ 6886c3b6
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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 _AMIROBLT_H_
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#define _AMIROBLT_H_
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#include <stdint.h> |
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/*============================================================================*/
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/**
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* @defgroup AMiRo-BLT-IF AMiRo 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 in the MCUs flash memory (ROM) with offset @ref BL_CALLBACK_TABLE_OFFSET .
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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 offset from the flash memory base address to where the @ref blCallbackTable_t struct is stored.
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* @note This offset 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_OFFSET 0x000001C0u |
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/**
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* @brief The memory address where the @ref blCallbackTable_t struct is located in flash memory.
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* @note This adress must correspond with the @p _callback_table section in file @p memory.x of the bootloader.
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* @deprecated The @ref BL_CALLBACK_TABLE_OFFSET macro must be used for new software.
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*/
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#define BL_CALLBACK_TABLE_ADDRESS ((blCallbackTable_t*)(0x08000000u + BL_CALLBACK_TABLE_OFFSET)) |
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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 1 |
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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 0 |
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/**
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* @brief The major version number of the implemented SSSP (Startup & Shutdown 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 & Shutdown Synchronization Protocol).
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*/
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#define SSSP_VERSION_MINOR 1 |
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/**
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* @brief A struct to define a version in a generic way.
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*/
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struct blVersion_t {
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const uint8_t identifier; /**< The identifier can be used if the version can be ambiguous. */ |
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const uint8_t major; /**< Major version number. */ |
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const uint8_t minor; /**< Minor version number. */ |
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const uint8_t patch; /**< Patch level number. */ |
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} __attribute__((packed)); |
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/**
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* @brief Synonym for simplified access.
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*/
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typedef struct blVersion_t blVersion_t; |
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/**
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* @brief An enum that defines possible values for the 'identifier' member of the @p blVersion_t struct.
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* @note The values must be in (unsigned) 8 bit integer range.
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*/
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enum blVersionIdentifier_t {
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BL_VERSION_ID_UNKNOWN = 0x00u, /**< Unknown identifier */ |
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BL_VERSION_ID_NA = 0xFFu, /**< Identifier not applicable */ |
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BL_VERSION_ID_AMiRoBLT_PreAlpha = 0x01u, /**< AMiRo-BLT pre-alpha identifier. */ |
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BL_VERSION_ID_AMiRoBLT_Alpha = 0x02u, /**< AMiRo-BLT alpha version identifier. */ |
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BL_VERSION_ID_AMiRoBLT_Beta = 0x03u, /**< AMiRo-BLT beta version identifier. */ |
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BL_VERSION_ID_AMiRoBLT_ReleaseCandidate = 0x04u, /**< AMiRo-BLT release candidate (RC) identifier. */ |
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BL_VERSION_ID_AMiRoBLT_Release = 0x05u, /**< AMiRo-BLT release version identifier. */ |
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BL_VERSION_ID_SSSP = 0x01u, /**< Startup & Shutdown Synchronization Protocol identifier. */ |
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BL_VERSION_ID_GCC = 0x01u, /**< Gnu Compiler Collection identifier. */ |
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}; |
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/**
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* @brief A magic number to detect whether the callback table exists.
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* @details The magic number can be interpreted as four character string "A-BL".
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* The according hexadecimal values are 0x41, 0x2D, 0x42, and 0x4C.
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* The according 32 bit integer is 0x412D424C.
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*/
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#define BL_MAGIC_NUMBER ((uint32_t)(('A'<<24) | ('-'<<16) | ('B'<<8) | ('L'<<0))) |
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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_OFFSET 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_t {
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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 blVersion_t vBootloader; /**< Version information about the bootloader. */ |
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const blVersion_t vSSSP; /**< Version information about the Startup & Shutdown Synchronization Protocol (SSSP). */ |
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const blVersion_t vCompiler; /**< Version information about the used compiler. */ |
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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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} __attribute__((__packed__)); |
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/**
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* @brief Synonym for simplified access.
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*/
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typedef struct blCallbackTable_t blCallbackTable_t; |
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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_t {
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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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} __attribute__((__packed__)); |
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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 union blBackupRegister_t blBackupRegister_t; |
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/**
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* @brief An enum defining identifiers for possible reasons for system shutdown.
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* @note The values must be in (unsigned) 8 bit integer range.
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*/
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enum blShutdownReason_t {
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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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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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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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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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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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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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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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BL_SHUTDOWN_SEC_RSN_UNKNOWN = 0x00u,
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}; |
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/**
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* @brief An enum defining identifiers for possible reasons for system wakeup.
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* @note The values must be in (unsigned) 8 bit integer range.
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*/
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enum blWakeupReason_t {
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/**
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* @brief The reason could not be determined.
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*/
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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BL_WAKEUP_SEC_RSN_RSVD = 0xC0u,
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}; |
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///@}
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/** @} */
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#endif // _AMIROBLT_H_ |
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/** @} */
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