amiro-blt / Target / Source / AMiRo / amiroblt.h @ 6886c3b6
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| 1 | 470d0567 | 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 _AMIROBLT_H_
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| 11 | #define _AMIROBLT_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 AMiRo 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 in the MCUs flash memory (ROM) with offset @ref BL_CALLBACK_TABLE_OFFSET .
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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 offset from the flash memory base address to where the @ref blCallbackTable_t struct is stored.
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| 34 | * @note This offset 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_OFFSET 0x000001C0u |
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| 37 | |||
| 38 | /**
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| 39 | * @brief The memory address where the @ref blCallbackTable_t struct is located in flash memory.
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| 40 | * @note This adress must correspond with the @p _callback_table section in file @p memory.x of the bootloader.
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| 41 | * @deprecated The @ref BL_CALLBACK_TABLE_OFFSET macro must be used for new software.
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| 42 | */
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| 43 | #define BL_CALLBACK_TABLE_ADDRESS ((blCallbackTable_t*)(0x08000000u + BL_CALLBACK_TABLE_OFFSET)) |
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| 44 | |||
| 45 | /**
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| 46 | * @brief The major version number of the bootloader.
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| 47 | */
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| 48 | #define BL_VERSION_MAJOR 1 |
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| 49 | |||
| 50 | /**
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| 51 | * @brief The minor version number of the bootloader.
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| 52 | */
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| 53 | #define BL_VERSION_MINOR 0 |
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| 54 | |||
| 55 | /**
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| 56 | * @brief The major version number of the implemented SSSP (Startup & Shutdown Synchronization Protocol).
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| 57 | */
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| 58 | #define SSSP_VERSION_MAJOR 1 |
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| 59 | |||
| 60 | /**
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| 61 | * @brief The minor version number of the implemented SSSP (Startup & Shutdown Synchronization Protocol).
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| 62 | */
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| 63 | #define SSSP_VERSION_MINOR 1 |
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| 64 | |||
| 65 | /**
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| 66 | * @brief A struct to define a version in a generic way.
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| 67 | */
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| 68 | struct blVersion_t {
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| 69 | const uint8_t identifier; /**< The identifier can be used if the version can be ambiguous. */ |
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| 70 | const uint8_t major; /**< Major version number. */ |
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| 71 | const uint8_t minor; /**< Minor version number. */ |
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| 72 | const uint8_t patch; /**< Patch level number. */ |
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| 73 | } __attribute__((packed)); |
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| 74 | |||
| 75 | /**
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| 76 | * @brief Synonym for simplified access.
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| 77 | */
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| 78 | typedef struct blVersion_t blVersion_t; |
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| 79 | |||
| 80 | /**
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| 81 | * @brief An enum that defines possible values for the 'identifier' member of the @p blVersion_t struct.
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| 82 | * @note The values must be in (unsigned) 8 bit integer range.
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| 83 | */
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| 84 | enum blVersionIdentifier_t {
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| 85 | BL_VERSION_ID_UNKNOWN = 0x00u, /**< Unknown identifier */ |
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| 86 | BL_VERSION_ID_NA = 0xFFu, /**< Identifier not applicable */ |
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| 87 | BL_VERSION_ID_AMiRoBLT_PreAlpha = 0x01u, /**< AMiRo-BLT pre-alpha identifier. */ |
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| 88 | BL_VERSION_ID_AMiRoBLT_Alpha = 0x02u, /**< AMiRo-BLT alpha version identifier. */ |
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| 89 | BL_VERSION_ID_AMiRoBLT_Beta = 0x03u, /**< AMiRo-BLT beta version identifier. */ |
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| 90 | BL_VERSION_ID_AMiRoBLT_ReleaseCandidate = 0x04u, /**< AMiRo-BLT release candidate (RC) identifier. */ |
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| 91 | BL_VERSION_ID_AMiRoBLT_Release = 0x05u, /**< AMiRo-BLT release version identifier. */ |
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| 92 | BL_VERSION_ID_SSSP = 0x01u, /**< Startup & Shutdown Synchronization Protocol identifier. */ |
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| 93 | BL_VERSION_ID_GCC = 0x01u, /**< Gnu Compiler Collection identifier. */ |
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| 94 | }; |
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| 95 | |||
| 96 | /**
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| 97 | * @brief A magic number to detect whether the callback table exists.
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| 98 | * @details The magic number can be interpreted as four character string "A-BL".
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| 99 | * The according hexadecimal values are 0x41, 0x2D, 0x42, and 0x4C.
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| 100 | * The according 32 bit integer is 0x412D424C.
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| 101 | */
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| 102 | #define BL_MAGIC_NUMBER ((uint32_t)(('A'<<24) | ('-'<<16) | ('B'<<8) | ('L'<<0))) |
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| 103 | |||
| 104 | /**
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| 105 | * @brief This struct contains information about the bootloader version and pointers to several callback function.
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| 106 | * It is located at the constant address @ref BL_CALLBACK_TABLE_OFFSET in the flash memory.
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| 107 | * @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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| 108 | */
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| 109 | struct blCallbackTable_t {
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| 110 | const uint32_t magicNumber; /**< A magic number that can be used for sanity checks. @sa BL_MAGIC_NUMBER. */ |
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| 111 | const blVersion_t vBootloader; /**< Version information about the bootloader. */ |
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| 112 | const blVersion_t vSSSP; /**< Version information about the Startup & Shutdown Synchronization Protocol (SSSP). */ |
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| 113 | const blVersion_t vCompiler; /**< Version information about the used compiler. */ |
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| 114 | /**
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| 115 | * @brief Callback function pointer to enter hibernate mode.
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| 116 | * @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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| 117 | */
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| 118 | void (*const cbShutdownHibernate)(void); |
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| 119 | /**
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| 120 | * @brief Callback function pointer to enter deepsleep mode.
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| 121 | * @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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| 122 | */
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| 123 | void (*const cbShutdownDeepsleep)(void); |
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| 124 | /**
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| 125 | * @brief Callback function pointer to enter transportation mode.
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| 126 | * @details In transportation mode, the system enters maximum power-saving mode and all wakeup signals are deactivated.
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| 127 | * Thus, the only way to reactivate the system will be a hard reset.
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| 128 | */
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| 129 | void (*const cbShutdownTransportation)(void); /**< Callback function pointer to enter transportation mode. */ |
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| 130 | /**
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| 131 | * @brief Callback function pointer to restart the system.
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| 132 | */
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| 133 | void (*const cbShutdownRestart)(void); |
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| 134 | /**
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| 135 | * @brief Callback function pointer to handle a shutdown request from another module.
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| 136 | * @details Depending on the result of the disambiguation procedure, the module will enter the requested low-power mode.
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| 137 | */
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| 138 | void (*const cbHandleShutdownRequest)(void); |
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| 139 | void (*const cb5)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 140 | void (*const cb6)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 141 | void (*const cb7)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 142 | void (*const cb8)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 143 | void (*const cb9)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 144 | void (*const cb10)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 145 | void (*const cb11)(void); /**< Reserved but currently unused callback function pointer. */ |
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| 146 | } __attribute__((__packed__)); |
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| 147 | |||
| 148 | /**
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| 149 | * @brief Synonym for simplified access.
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| 150 | */
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| 151 | typedef struct blCallbackTable_t blCallbackTable_t; |
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| 152 | |||
| 153 | ///@}
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| 154 | /*============================================================================*/
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| 155 | |||
| 156 | /*============================================================================*/
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| 157 | /**
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| 158 | * @name Backup Register
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| 159 | * @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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| 160 | */
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| 161 | ///@{
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| 162 | |||
| 163 | /**
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| 164 | * @brief Number of the RTC backup register in which some persistent information is stored.
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| 165 | * @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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| 166 | */
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| 167 | #define BL_RTC_BACKUP_REG 0 |
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| 168 | |||
| 169 | /**
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| 170 | * @brief This union is used for interpretation of the content of the backup register.
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| 171 | */
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| 172 | union blBackupRegister_t {
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| 173 | /**
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| 174 | * @brief The raw data of the register.
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| 175 | */
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| 176 | uint32_t raw; |
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| 177 | |||
| 178 | /**
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| 179 | * @brief A struct to interpret the content of the register.
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| 180 | */
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| 181 | struct {
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| 182 | /**
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| 183 | * @brief The primary reason for the last system shutdown.
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| 184 | * @note The content of this member is enum-like.
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| 185 | * @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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| 186 | */
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| 187 | uint8_t shutdown_pri_reason; |
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| 188 | |||
| 189 | /**
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| 190 | * @brief The secondary reason for the last system shutdown.
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| 191 | * @note The content of this member is enum-like.
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| 192 | * @sa BL_SHUTDOWN_SEC_RSN_UNKNOWN
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| 193 | */
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| 194 | uint8_t shutdown_sec_reason; |
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| 195 | |||
| 196 | /**
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| 197 | * @brief The primary reason for the last system wakeup.
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| 198 | * @note The content of this member is bitmask-like.
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| 199 | * @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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| 200 | */
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| 201 | uint8_t wakeup_pri_reason; |
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| 202 | |||
| 203 | /**
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| 204 | * @brief The secondary reason for the last system wakeup.
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| 205 | * @note The content of this member is bitmask-like.
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| 206 | * @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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| 207 | */
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| 208 | uint8_t wakeup_sec_reason; |
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| 209 | } __attribute__((__packed__)); |
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| 210 | }; |
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| 211 | |||
| 212 | /**
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| 213 | * @brief Synonym for simplified access.
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| 214 | */
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| 215 | typedef union blBackupRegister_t blBackupRegister_t; |
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| 216 | |||
| 217 | /**
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| 218 | * @brief An enum defining identifiers for possible reasons for system shutdown.
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| 219 | * @note The values must be in (unsigned) 8 bit integer range.
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| 220 | */
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| 221 | enum blShutdownReason_t {
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| 222 | /**
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| 223 | * @brief The reason was not set or the register was reset.
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| 224 | */
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| 225 | BL_SHUTDOWN_PRI_RSN_UNKNOWN = 0x00u,
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| 226 | |||
| 227 | /**
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| 228 | * @brief The system was shut down to enter hibernate mode.
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| 229 | */
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| 230 | BL_SHUTDOWN_PRI_RSN_HIBERNATE = 0x01u,
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| 231 | |||
| 232 | /**
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| 233 | * @brief The system was shut down to enter deepsleep mode.
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| 234 | */
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| 235 | BL_SHUTDOWN_PRI_RSN_DEEPSLEEP = 0x02u,
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| 236 | |||
| 237 | /**
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| 238 | * @brief The system was shut down to enter transportation mode.
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| 239 | */
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| 240 | BL_SHUTDOWN_PRI_RSN_TRANSPORT = 0x03u,
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| 241 | |||
| 242 | /**
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| 243 | * @brief The system was shut down to restart.
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| 244 | */
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| 245 | BL_SHUTDOWN_PRI_RSN_RESTART = 0x04u,
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| 246 | |||
| 247 | /**
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| 248 | * @brief The default shutdown mode.
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| 249 | * @details This mode is used, if the shutdown sequence was triggered by another module than the PowerManagement.
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| 250 | */
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| 251 | BL_SHUTDOWN_PRI_RSN_DEFAULT = BL_SHUTDOWN_PRI_RSN_DEEPSLEEP, |
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| 252 | |||
| 253 | /**
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| 254 | * @brief The reason was not set or the regsiter was reset.
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| 255 | */
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| 256 | BL_SHUTDOWN_SEC_RSN_UNKNOWN = 0x00u,
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| 257 | }; |
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| 258 | |||
| 259 | /**
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| 260 | * @brief An enum defining identifiers for possible reasons for system wakeup.
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| 261 | * @note The values must be in (unsigned) 8 bit integer range.
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| 262 | */
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| 263 | enum blWakeupReason_t {
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| 264 | /**
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| 265 | * @brief The reason could not be determined.
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| 266 | */
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| 267 | BL_WAKEUP_PRI_RSN_UNKNOWN = 0x00u,
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| 268 | |||
| 269 | /**
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| 270 | * @brief The system was reset because of the low-power management configuration.
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| 271 | */
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| 272 | BL_WAKEUP_PRI_RSN_LPWRRST = 0x01u,
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| 273 | |||
| 274 | /**
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| 275 | * @brief The system was woken by the window watchdog.
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| 276 | */
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| 277 | BL_WAKEUP_PRI_RSN_WWDGRST = 0x02u,
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| 278 | |||
| 279 | /**
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| 280 | * @brief The system was woken by the independant watchdog.
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| 281 | */
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| 282 | BL_WAKEUP_PRI_RSN_IWDGRST = 0x04u,
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| 283 | |||
| 284 | /**
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| 285 | * @brief The system was reset by software.
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| 286 | */
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| 287 | BL_WAKEUP_PRI_RSN_SFTRST = 0x08u,
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| 288 | |||
| 289 | /**
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| 290 | * @brief The system was woken by a power-on/power-down reset.
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| 291 | */
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| 292 | BL_WAKEUP_PRI_RSN_PORRST = 0x10u,
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| 293 | |||
| 294 | /**
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| 295 | * @brief The system was reset via the NRST pin.
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| 296 | */
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| 297 | BL_WAKEUP_PRI_RSN_PINRST = 0x20u,
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| 298 | |||
| 299 | /**
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| 300 | * @brief The system was woken by a power-on/power-down, or a brownout reset.
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| 301 | */
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| 302 | BL_WAKEUP_PRI_RSN_BORRST = 0x40u,
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| 303 | |||
| 304 | /**
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| 305 | * @brief The system was woken via the WKUP pin.
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| 306 | */
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| 307 | BL_WAKEUP_PRI_RSN_WKUP = 0x80u,
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| 308 | |||
| 309 | /**
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| 310 | * @brief The reason could not be determined.
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| 311 | */
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| 312 | BL_WAKEUP_SEC_RSN_UNKNOWN = 0x00u,
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| 313 | |||
| 314 | /**
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| 315 | * @brief The WKUP pin was triggered by the UART signal.
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| 316 | */
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| 317 | BL_WAKEUP_SEC_RSN_UART = 0x01u,
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| 318 | |||
| 319 | /**
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| 320 | * @brief The WKUP pin was triggered by plugging in a power plug.
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| 321 | */
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| 322 | BL_WAKEUP_SEC_RSN_PWRPLUG = 0x02u,
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| 323 | |||
| 324 | /**
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| 325 | * @brief The internal ADC detected a system voltage higher than the configured threshold.
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| 326 | * @note Usually the threshold is set to 9V.
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| 327 | */
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| 328 | BL_WAKEUP_SEC_RSN_VSYSHIGH = 0x04u,
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| 329 | |||
| 330 | /**
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| 331 | * @brief The internal ADC detected a system voltage lower than the configured threshold.
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| 332 | */
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| 333 | BL_WAKEUP_SEC_RSN_VSYSLOW = 0x08u,
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| 334 | |||
| 335 | /**
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| 336 | * @brief The WKUP pin was triggered by an interrupt from the touch sensors.
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| 337 | */
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| 338 | BL_WAKEUP_SEC_RSN_TOUCH = 0x10u,
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| 339 | |||
| 340 | /**
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| 341 | * @brief The WKUP pin was triggered by an interrupt from the accelerometer.
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| 342 | */
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| 343 | BL_WAKEUP_SEC_RSN_ACCEL = 0x20u,
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| 344 | |||
| 345 | /**
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| 346 | * @brief Reserved value that must not be used right now, but might become valid in a future version.
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| 347 | */
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| 348 | BL_WAKEUP_SEC_RSN_RSVD = 0xC0u,
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| 349 | }; |
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| 350 | |||
| 351 | ///@}
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| 352 | |||
| 353 | /** @} */
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| 354 | |||
| 355 | #endif // _AMIROBLT_H_ |
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| 356 | |||
| 357 | /** @} */ |