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nRF51822/nordic/nrf-sdk/s110/ble_l2cap.h@5:267bdacf5508, 2017-11-23 (annotated)
- Committer:
- tridung141196
- Date:
- Thu Nov 23 15:38:48 2017 +0000
- Revision:
- 5:267bdacf5508
- Parent:
- 0:76dfa9657d9d
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Who changed what in which revision?
User | Revision | Line number | New contents of line |
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jksoft | 0:76dfa9657d9d | 1 | /* Copyright (c) 2011 Nordic Semiconductor. All Rights Reserved. |
jksoft | 0:76dfa9657d9d | 2 | * |
jksoft | 0:76dfa9657d9d | 3 | * The information contained herein is confidential property of Nordic Semiconductor. The use, |
jksoft | 0:76dfa9657d9d | 4 | * copying, transfer or disclosure of such information is prohibited except by express written |
jksoft | 0:76dfa9657d9d | 5 | * agreement with Nordic Semiconductor. |
jksoft | 0:76dfa9657d9d | 6 | * |
jksoft | 0:76dfa9657d9d | 7 | */ |
jksoft | 0:76dfa9657d9d | 8 | /** |
jksoft | 0:76dfa9657d9d | 9 | @addtogroup BLE_L2CAP Logical Link Control and Adaptation Protocol (L2CAP) |
jksoft | 0:76dfa9657d9d | 10 | @{ |
jksoft | 0:76dfa9657d9d | 11 | @brief Definitions and prototypes for the L2CAP interface. |
jksoft | 0:76dfa9657d9d | 12 | */ |
jksoft | 0:76dfa9657d9d | 13 | |
jksoft | 0:76dfa9657d9d | 14 | #ifndef BLE_L2CAP_H__ |
jksoft | 0:76dfa9657d9d | 15 | #define BLE_L2CAP_H__ |
jksoft | 0:76dfa9657d9d | 16 | |
jksoft | 0:76dfa9657d9d | 17 | #include "ble_types.h" |
jksoft | 0:76dfa9657d9d | 18 | #include "ble_ranges.h" |
jksoft | 0:76dfa9657d9d | 19 | #include "ble_err.h" |
jksoft | 0:76dfa9657d9d | 20 | #include "nrf_svc.h" |
jksoft | 0:76dfa9657d9d | 21 | |
jksoft | 0:76dfa9657d9d | 22 | /**@addtogroup BLE_L2CAP_ENUMERATIONS Enumerations |
jksoft | 0:76dfa9657d9d | 23 | * @{ */ |
jksoft | 0:76dfa9657d9d | 24 | |
jksoft | 0:76dfa9657d9d | 25 | /**@brief L2CAP API SVC numbers. */ |
jksoft | 0:76dfa9657d9d | 26 | enum BLE_L2CAP_SVCS |
jksoft | 0:76dfa9657d9d | 27 | { |
jksoft | 0:76dfa9657d9d | 28 | SD_BLE_L2CAP_CID_REGISTER = BLE_L2CAP_SVC_BASE, /**< Register a CID. */ |
jksoft | 0:76dfa9657d9d | 29 | SD_BLE_L2CAP_CID_UNREGISTER, /**< Unregister a CID. */ |
jksoft | 0:76dfa9657d9d | 30 | SD_BLE_L2CAP_TX /**< Transmit a packet. */ |
jksoft | 0:76dfa9657d9d | 31 | }; |
jksoft | 0:76dfa9657d9d | 32 | |
jksoft | 0:76dfa9657d9d | 33 | /** @} */ |
jksoft | 0:76dfa9657d9d | 34 | |
jksoft | 0:76dfa9657d9d | 35 | /**@addtogroup BLE_L2CAP_DEFINES Defines |
jksoft | 0:76dfa9657d9d | 36 | * @{ */ |
jksoft | 0:76dfa9657d9d | 37 | |
jksoft | 0:76dfa9657d9d | 38 | /**@defgroup BLE_ERRORS_L2CAP SVC return values specific to L2CAP |
jksoft | 0:76dfa9657d9d | 39 | * @{ */ |
jksoft | 0:76dfa9657d9d | 40 | #define BLE_ERROR_L2CAP_CID_IN_USE (NRF_L2CAP_ERR_BASE + 0x000) /**< CID already in use. */ |
jksoft | 0:76dfa9657d9d | 41 | /** @} */ |
jksoft | 0:76dfa9657d9d | 42 | |
jksoft | 0:76dfa9657d9d | 43 | /**@brief Default L2CAP MTU. */ |
jksoft | 0:76dfa9657d9d | 44 | #define BLE_L2CAP_MTU_DEF (23) |
jksoft | 0:76dfa9657d9d | 45 | |
jksoft | 0:76dfa9657d9d | 46 | /**@brief Invalid Channel Identifier. */ |
jksoft | 0:76dfa9657d9d | 47 | #define BLE_L2CAP_CID_INVALID (0x0000) |
jksoft | 0:76dfa9657d9d | 48 | |
jksoft | 0:76dfa9657d9d | 49 | /**@brief Dynamic Channel Identifier base. */ |
jksoft | 0:76dfa9657d9d | 50 | #define BLE_L2CAP_CID_DYN_BASE (0x0040) |
jksoft | 0:76dfa9657d9d | 51 | |
jksoft | 0:76dfa9657d9d | 52 | /**@brief Maximum amount of dynamic CIDs. */ |
jksoft | 0:76dfa9657d9d | 53 | #define BLE_L2CAP_CID_DYN_MAX (8) |
jksoft | 0:76dfa9657d9d | 54 | |
jksoft | 0:76dfa9657d9d | 55 | /** @} */ |
jksoft | 0:76dfa9657d9d | 56 | |
jksoft | 0:76dfa9657d9d | 57 | /**@addtogroup BLE_L2CAP_STRUCTURES Structures |
jksoft | 0:76dfa9657d9d | 58 | * @{ */ |
jksoft | 0:76dfa9657d9d | 59 | |
jksoft | 0:76dfa9657d9d | 60 | /**@brief Packet header format for L2CAP transmission. */ |
jksoft | 0:76dfa9657d9d | 61 | typedef struct |
jksoft | 0:76dfa9657d9d | 62 | { |
jksoft | 0:76dfa9657d9d | 63 | uint16_t len; /**< Length of valid info in data member. */ |
jksoft | 0:76dfa9657d9d | 64 | uint16_t cid; /**< Channel ID on which packet is transmitted. */ |
jksoft | 0:76dfa9657d9d | 65 | } ble_l2cap_header_t; |
jksoft | 0:76dfa9657d9d | 66 | |
jksoft | 0:76dfa9657d9d | 67 | /**@brief L2CAP Event IDs. */ |
jksoft | 0:76dfa9657d9d | 68 | enum BLE_L2CAP_EVTS |
jksoft | 0:76dfa9657d9d | 69 | { |
jksoft | 0:76dfa9657d9d | 70 | BLE_L2CAP_EVT_RX = BLE_L2CAP_EVT_BASE /**< L2CAP packet received. */ |
jksoft | 0:76dfa9657d9d | 71 | }; |
jksoft | 0:76dfa9657d9d | 72 | |
jksoft | 0:76dfa9657d9d | 73 | |
jksoft | 0:76dfa9657d9d | 74 | /**@brief L2CAP Received packet event report. */ |
jksoft | 0:76dfa9657d9d | 75 | typedef struct |
jksoft | 0:76dfa9657d9d | 76 | { |
jksoft | 0:76dfa9657d9d | 77 | ble_l2cap_header_t header; /** L2CAP packet header. */ |
jksoft | 0:76dfa9657d9d | 78 | uint8_t data[1]; /**< Packet data, variable length. */ |
jksoft | 0:76dfa9657d9d | 79 | } ble_l2cap_evt_rx_t; |
jksoft | 0:76dfa9657d9d | 80 | |
jksoft | 0:76dfa9657d9d | 81 | |
jksoft | 0:76dfa9657d9d | 82 | /**@brief L2CAP event callback event structure. */ |
jksoft | 0:76dfa9657d9d | 83 | typedef struct |
jksoft | 0:76dfa9657d9d | 84 | { |
jksoft | 0:76dfa9657d9d | 85 | uint16_t conn_handle; /**< Connection Handle on which event occured. */ |
jksoft | 0:76dfa9657d9d | 86 | union |
jksoft | 0:76dfa9657d9d | 87 | { |
jksoft | 0:76dfa9657d9d | 88 | ble_l2cap_evt_rx_t rx; /**< RX Event parameters. */ |
jksoft | 0:76dfa9657d9d | 89 | } params; |
jksoft | 0:76dfa9657d9d | 90 | } ble_l2cap_evt_t; |
jksoft | 0:76dfa9657d9d | 91 | |
jksoft | 0:76dfa9657d9d | 92 | |
jksoft | 0:76dfa9657d9d | 93 | /**@brief Register a CID with L2CAP. |
jksoft | 0:76dfa9657d9d | 94 | * |
jksoft | 0:76dfa9657d9d | 95 | * @details This registers a higher protocol layer with the L2CAP multiplexer, and is requried prior to all operations on the CID. |
jksoft | 0:76dfa9657d9d | 96 | * |
jksoft | 0:76dfa9657d9d | 97 | * @param[in] cid L2CAP CID. |
jksoft | 0:76dfa9657d9d | 98 | * |
jksoft | 0:76dfa9657d9d | 99 | * @return @ref NRF_SUCCESS Successfully registered a CID with the L2CAP layer. |
jksoft | 0:76dfa9657d9d | 100 | * @return @ref NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied, CID must be above @ref BLE_L2CAP_CID_DYN_BASE. |
jksoft | 0:76dfa9657d9d | 101 | * @return @ref BLE_ERROR_L2CAP_CID_IN_USE L2CAP CID already in use. |
jksoft | 0:76dfa9657d9d | 102 | * @return @ref NRF_ERROR_NO_MEM Not enough memory to complete operation. |
jksoft | 0:76dfa9657d9d | 103 | */ |
jksoft | 0:76dfa9657d9d | 104 | SVCALL(SD_BLE_L2CAP_CID_REGISTER, uint32_t, sd_ble_l2cap_cid_register(uint16_t cid)); |
jksoft | 0:76dfa9657d9d | 105 | |
jksoft | 0:76dfa9657d9d | 106 | /**@brief Unregister a CID with L2CAP. |
jksoft | 0:76dfa9657d9d | 107 | * |
jksoft | 0:76dfa9657d9d | 108 | * @details This unregisters a previously registerd higher protocol layer with the L2CAP multiplexer. |
jksoft | 0:76dfa9657d9d | 109 | * |
jksoft | 0:76dfa9657d9d | 110 | * @param[in] cid L2CAP CID. |
jksoft | 0:76dfa9657d9d | 111 | * |
jksoft | 0:76dfa9657d9d | 112 | * @return @ref NRF_SUCCESS Successfully unregistered the CID. |
jksoft | 0:76dfa9657d9d | 113 | * @return @ref NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied. |
jksoft | 0:76dfa9657d9d | 114 | * @return @ref NRF_ERROR_NOT_FOUND CID not previously registered. |
jksoft | 0:76dfa9657d9d | 115 | */ |
jksoft | 0:76dfa9657d9d | 116 | SVCALL(SD_BLE_L2CAP_CID_UNREGISTER, uint32_t, sd_ble_l2cap_cid_unregister(uint16_t cid)); |
jksoft | 0:76dfa9657d9d | 117 | |
jksoft | 0:76dfa9657d9d | 118 | /**@brief Transmit an L2CAP packet. |
jksoft | 0:76dfa9657d9d | 119 | * |
jksoft | 0:76dfa9657d9d | 120 | * @note It is important to note that a call to this function will <b>consume an application buffer</b>, and will therefore |
jksoft | 0:76dfa9657d9d | 121 | * generate a @ref BLE_EVT_TX_COMPLETE event when the packet has been transmitted. |
jksoft | 0:76dfa9657d9d | 122 | * Please see the documentation of @ref sd_ble_tx_buffer_count_get for more details. |
jksoft | 0:76dfa9657d9d | 123 | * |
jksoft | 0:76dfa9657d9d | 124 | * @param[in] conn_handle Connection Handle. |
jksoft | 0:76dfa9657d9d | 125 | * @param[in] p_header Pointer to a packet header containing length and CID. |
jksoft | 0:76dfa9657d9d | 126 | * @param[in] p_data Pointer to the data to be transmitted. |
jksoft | 0:76dfa9657d9d | 127 | * |
jksoft | 0:76dfa9657d9d | 128 | * @return @ref NRF_SUCCESS Successfully queued an L2CAP packet for transmission. |
jksoft | 0:76dfa9657d9d | 129 | * @return @ref NRF_ERROR_INVALID_ADDR Invalid pointer supplied. |
jksoft | 0:76dfa9657d9d | 130 | * @return @ref NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied, CIDs must be registered beforehand with @ref sd_ble_l2cap_cid_register. |
jksoft | 0:76dfa9657d9d | 131 | * @return @ref NRF_ERROR_NOT_FOUND CID not found. |
jksoft | 0:76dfa9657d9d | 132 | * @return @ref NRF_ERROR_NO_MEM Not enough memory to complete operation. |
jksoft | 0:76dfa9657d9d | 133 | * @return @ref BLE_ERROR_NO_TX_BUFFERS Not enough application buffers available. |
jksoft | 0:76dfa9657d9d | 134 | * @return @ref NRF_ERROR_DATA_SIZE Invalid data size(s) supplied, see @ref BLE_L2CAP_MTU_DEF. |
jksoft | 0:76dfa9657d9d | 135 | */ |
jksoft | 0:76dfa9657d9d | 136 | SVCALL(SD_BLE_L2CAP_TX, uint32_t, sd_ble_l2cap_tx(uint16_t conn_handle, ble_l2cap_header_t const * const p_header, uint8_t const * const p_data)); |
jksoft | 0:76dfa9657d9d | 137 | |
jksoft | 0:76dfa9657d9d | 138 | /** @} */ |
jksoft | 0:76dfa9657d9d | 139 | |
jksoft | 0:76dfa9657d9d | 140 | #endif // BLE_L2CAP_H__ |
jksoft | 0:76dfa9657d9d | 141 | |
jksoft | 0:76dfa9657d9d | 142 | /** |
jksoft | 0:76dfa9657d9d | 143 | @} |
jksoft | 0:76dfa9657d9d | 144 | */ |