amiro-blt / Target / Source / AMiRo / interfaces.h @ 69661903
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| 1 | 69661903 | Thomas Schöpping | /**
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| 2 | * @file interfaces.h
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| 3 | * @brief Interfaces to access and interpret information of the bootloader by an operating system.
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| 4 | *
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| 5 | * @addtogroup AMiRo-BLT
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| 6 | * @details Data structures and constants to interfere with the bootloader form an operating system.
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| 7 | * @{
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| 8 | */
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| 9 | |||
| 10 | #ifndef BL_INTERFACES_H
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| 11 | #define BL_INTERFACES_H
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| 12 | |||
| 13 | #include <stdint.h> |
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| 14 | |||
| 15 | /*===========================================================================*/
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| 16 | /**
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| 17 | * @defgroup AMiRo-BLT-IF Bootloader Interface
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| 18 | * @details This interface can be used to interface the AMiRo bootloader from an operating system.
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| 19 | *
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| 20 | * @{
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| 21 | */
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| 22 | /*===========================================================================*/
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| 23 | |||
| 24 | /*===========================================================================*/
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| 25 | /**
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| 26 | * @name Callback Table
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| 27 | * @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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| 28 | * It contains version information and a bunch of callback function pointers.
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| 29 | */
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| 30 | ///@{
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| 31 | |||
| 32 | /**
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| 33 | * @brief The memory address where the @ref BlCallbackTable struct is located in flash memory.
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| 34 | * @note This address must correspond with the @p _callback_table section in file @p memory.x of the bootloader.
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| 35 | */
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| 36 | #define BL_CALLBACK_TABLE_ADDRESS (uint32_t)(0x08000000u + 0x01C0u) |
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| 37 | |||
| 38 | /**
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| 39 | * @brief A magic number to detect whether the callback table exists.
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| 40 | */
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| 41 | #define BL_MAGIC_NUMBER ((uint32_t)0xFF669900u) |
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| 42 | |||
| 43 | /**
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| 44 | * @brief The major version number of the bootloader.
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| 45 | */
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| 46 | #define BL_VERSION_MAJOR 0 |
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| 47 | |||
| 48 | /**
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| 49 | * @brief The minor version number of the bootloader.
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| 50 | */
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| 51 | #define BL_VERSION_MINOR 3 |
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| 52 | |||
| 53 | /**
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| 54 | * @brief The major version number of the implemented SSSP (Startup & Synchronization Protocol).
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| 55 | */
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| 56 | #define SSSP_VERSION_MAJOR 1 |
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| 57 | |||
| 58 | /**
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| 59 | * @brief The minor version number of the implemented SSSP (Startup & Synchronization Protocol).
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| 60 | */
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| 61 | #define SSSP_VERSION_MINOR 1 |
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| 62 | |||
| 63 | /**
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| 64 | * @brief This struct contains information about the bootloader version and pointers to several callback function.
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| 65 | * It is located at the constant address @ref BL_CALLBACK_TABLE_ADDRESS in the flash memory.
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| 66 | * @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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| 67 | */
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| 68 | struct BlCallbackTable {
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| 69 | const uint32_t magicNumber; /**< A magic number that can be used for sanity checks. @sa BL_MAGIC_NUMBER */ |
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| 70 | const uint32_t versionMajor; /**< The major version number of the bootloader. @sa BL_VERSION_MAJOR */ |
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| 71 | const uint32_t versionMinor; /**< The minor version number of the bootloader. @sa BL_VERSION_MINOR */ |
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| 72 | const uint32_t versionHotfix; /**< The hotfix indicator of the bootloader. */ |
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| 73 | /**
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| 74 | * @brief Callback function pointer to enter hibernate mode.
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| 75 | * @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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| 76 | */
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| 77 | void (*const cbShutdownHibernate)(void); |
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| 78 | /**
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| 79 | * @brief Callback function pointer to enter deepsleep mode.
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| 80 | * @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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| 81 | */
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| 82 | void (*const cbShutdownDeepsleep)(void); |
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| 83 | /**
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| 84 | * @brief Callback function pointer to enter transportation mode.
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| 85 | * @details In transportation mode, the system enters maximum power-saving mode and all wakeup signals are deactivated.
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| 86 | * Thus, the only way to reactivate the system will be a hard reset.
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| 87 | */
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| 88 | void (*const cbShutdownTransportation)(void); /**< Callback function pointer to enter transportation mode. */ |
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| 89 | /**
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| 90 | * @brief Callback function pointer to restart the system.
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| 91 | */
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| 92 | void (*const cbShutdownRestart)(void); |
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| 93 | /**
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| 94 | * @brief Callback function pointer to handle a shutdown request from another module.
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| 95 | * @details Depending on the result of the disambiguation procedure, the module will enter the requested low-power mode.
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| 96 | */
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| 97 | void (*const cbHandleShutdownRequest)(void); |
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| 98 | void (*const cb5)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 99 | void (*const cb6)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 100 | void (*const cb7)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 101 | void (*const cb8)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 102 | void (*const cb9)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 103 | void (*const cb10)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 104 | void (*const cb11)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 105 | }; |
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| 106 | |||
| 107 | /**
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| 108 | * @brief Synonym for simplified access.
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| 109 | */
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| 110 | typedef struct BlCallbackTable BlCallbackTable; |
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| 111 | |||
| 112 | ///@}
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| 113 | /*===========================================================================*/
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| 114 | |||
| 115 | /*===========================================================================*/
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| 116 | /**
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| 117 | * @name Backup Register
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| 118 | * @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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| 119 | */
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| 120 | ///@{
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| 121 | |||
| 122 | /**
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| 123 | * @brief Number of the RTC backup register in which some persistent information is stored.
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| 124 | * @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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| 125 | */
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| 126 | #define BL_RTC_BACKUP_REG 0 |
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| 127 | |||
| 128 | /**
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| 129 | * @brief This union is used for interpretation of the content of the backup register.
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| 130 | */
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| 131 | union BlBackupRegister {
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| 132 | /**
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| 133 | * @brief The raw data of the register.
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| 134 | */
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| 135 | uint32_t raw; |
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| 136 | |||
| 137 | /**
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| 138 | * @brief A struct to interpret the content of the register.
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| 139 | */
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| 140 | struct {
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| 141 | /**
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| 142 | * @brief The primary reason for the last system shutdown.
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| 143 | * @note The content of this member is enum-like.
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| 144 | * @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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| 145 | */
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| 146 | uint8_t shutdown_pri_reason; |
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| 147 | |||
| 148 | /**
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| 149 | * @brief The secondary reason for the last system shutdown.
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| 150 | * @note The content of this member is enum-like.
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| 151 | * @sa BL_SHUTDOWN_SEC_RSN_UNKNOWN
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| 152 | */
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| 153 | uint8_t shutdown_sec_reason; |
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| 154 | |||
| 155 | /**
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| 156 | * @brief The primary reason for the last system wakeup.
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| 157 | * @note The content of this member is bitmask-like.
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| 158 | * @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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| 159 | */
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| 160 | uint8_t wakeup_pri_reason; |
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| 161 | |||
| 162 | /**
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| 163 | * @brief The secondary reason for the last system wakeup.
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| 164 | * @note The content of this member is bitmask-like.
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| 165 | * @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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| 166 | */
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| 167 | uint8_t wakeup_sec_reason; |
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| 168 | }; |
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| 169 | }; |
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| 170 | typedef union BlBackupRegister BlBackupRegister; |
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| 171 | |||
| 172 | /**
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| 173 | * @brief The reason was not set or the register was reset.
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| 174 | */
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| 175 | #define BL_SHUTDOWN_PRI_RSN_UNKNOWN 0x00u |
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| 176 | |||
| 177 | /**
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| 178 | * @brief The system was shut down to enter hibernate mode.
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| 179 | */
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| 180 | #define BL_SHUTDOWN_PRI_RSN_HIBERNATE 0x01u |
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| 181 | |||
| 182 | /**
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| 183 | * @brief The system was shut down to enter deepsleep mode.
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| 184 | */
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| 185 | #define BL_SHUTDOWN_PRI_RSN_DEEPSLEEP 0x02u |
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| 186 | |||
| 187 | /**
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| 188 | * @brief The system was shut down to enter transportation mode.
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| 189 | */
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| 190 | #define BL_SHUTDOWN_PRI_RSN_TRANSPORT 0x03u |
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| 191 | |||
| 192 | /**
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| 193 | * @brief The system was shut down to restart.
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| 194 | */
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| 195 | #define BL_SHUTDOWN_PRI_RSN_RESTART 0x04u |
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| 196 | |||
| 197 | /**
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| 198 | * @brief The default shutdown mode.
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| 199 | * @details This mode is used, if the shutdown sequence was triggered by another module than the PowerManagement.
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| 200 | */
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| 201 | #define BL_SHUTDOWN_PRI_RSN_DEFAULT BL_SHUTDOWN_PRI_RSN_DEEPSLEEP
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| 202 | |||
| 203 | |||
| 204 | |||
| 205 | /**
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| 206 | * @brief The reason was not set or the regsiter was reset.
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| 207 | */
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| 208 | #define BL_SHUTDOWN_SEC_RSN_UNKNOWN 0x00u |
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| 209 | |||
| 210 | |||
| 211 | |||
| 212 | /**
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| 213 | * @brief The reason could not be determined.
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| 214 | */
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| 215 | #define BL_WAKEUP_PRI_RSN_UNKNOWN 0x00u |
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| 216 | |||
| 217 | /**
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| 218 | * @brief The system was reset because of the low-power management configuration.
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| 219 | */
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| 220 | #define BL_WAKEUP_PRI_RSN_LPWRRST 0x01u |
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| 221 | |||
| 222 | /**
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| 223 | * @brief The system was woken by the window watchdog.
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| 224 | */
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| 225 | #define BL_WAKEUP_PRI_RSN_WWDGRST 0x02u |
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| 226 | |||
| 227 | /**
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| 228 | * @brief The system was woken by the independant watchdog.
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| 229 | */
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| 230 | #define BL_WAKEUP_PRI_RSN_IWDGRST 0x04u |
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| 231 | |||
| 232 | /**
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| 233 | * @brief The system was reset by software.
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| 234 | */
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| 235 | #define BL_WAKEUP_PRI_RSN_SFTRST 0x08u |
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| 236 | |||
| 237 | /**
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| 238 | * @brief The system was woken by a power-on/power-down reset.
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| 239 | */
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| 240 | #define BL_WAKEUP_PRI_RSN_PORRST 0x10u |
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| 241 | |||
| 242 | /**
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| 243 | * @brief The system was reset via the NRST pin.
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| 244 | */
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| 245 | #define BL_WAKEUP_PRI_RSN_PINRST 0x20u |
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| 246 | |||
| 247 | /**
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| 248 | * @brief The system was woken by a power-on/power-down, or a brownout reset.
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| 249 | */
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| 250 | #define BL_WAKEUP_PRI_RSN_BORRST 0x40u |
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| 251 | |||
| 252 | /**
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| 253 | * @brief The system was woken via the WKUP pin.
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| 254 | */
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| 255 | #define BL_WAKEUP_PRI_RSN_WKUP 0x80u |
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| 256 | |||
| 257 | |||
| 258 | |||
| 259 | /**
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| 260 | * @brief The reason could not be determined.
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| 261 | */
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| 262 | #define BL_WAKEUP_SEC_RSN_UNKNOWN 0x00u |
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| 263 | |||
| 264 | /**
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| 265 | * @brief The WKUP pin was triggered by the UART signal.
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| 266 | */
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| 267 | #define BL_WAKEUP_SEC_RSN_UART 0x01u |
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| 268 | |||
| 269 | /**
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| 270 | * @brief The WKUP pin was triggered by plugging in a power plug.
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| 271 | */
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| 272 | #define BL_WAKEUP_SEC_RSN_PWRPLUG 0x02u |
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| 273 | |||
| 274 | /**
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| 275 | * @brief The internal ADC detected a system voltage higher than the configured threshold.
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| 276 | * @note Usually the threshold is set to 9V.
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| 277 | */
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| 278 | #define BL_WAKEUP_SEC_RSN_VSYSHIGH 0x04u |
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| 279 | |||
| 280 | /**
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| 281 | * @brief The internal ADC detected a system voltage lower than the configured threshold.
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| 282 | */
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| 283 | #define BL_WAKEUP_SEC_RSN_VSYSLOW 0x08u |
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| 284 | |||
| 285 | /**
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| 286 | * @brief The WKUP pin was triggered by an interrupt from the touch sensors.
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| 287 | */
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| 288 | #define BL_WAKEUP_SEC_RSN_TOUCH 0x10u |
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| 289 | |||
| 290 | /**
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| 291 | * @brief The WKUP pin was triggered by an interrupt from the accelerometer.
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| 292 | */
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| 293 | #define BL_WAKEUP_SEC_RSN_ACCEL 0x20u |
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| 294 | |||
| 295 | /**
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| 296 | * @brief Reserved value that must not be used right now, but might become valid in a future version.
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| 297 | */
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| 298 | #define BL_WAKEUP_SEC_RSN_RSVD 0xC0u |
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| 299 | |||
| 300 | ///@}
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| 301 | |||
| 302 | /** @} */
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| 303 | |||
| 304 | #endif // BL_INTERFACES_H |
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| 305 | |||
| 306 | /** @} */ |