ble_dfu.h

00001 /* Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved.
00002  *
00003  * The information contained herein is property of Nordic Semiconductor ASA.
00004  * Terms and conditions of usage are described in detail in NORDIC
00005  * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
00006  *
00007  * Licensees are granted free, non-transferable use of the information. NO
00008  * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
00009  * the file.
00010  *
00011  */
00012 
00013 /**@file
00014  *
00015  * @defgroup ble_sdk_srv_dfu Device Firmware Update Service
00016  * @{
00017  * @ingroup  ble_sdk_srv
00018  * @brief    Device Firmware Update Service
00019  *
00020  * @details  The Device Firmware Update (DFU) service is a GATT based service that can be used for
00021  *           performing firmware updates over BLE. Note that this implementation uses vendor
00022  *           specific UUIDs for service and characteristics and is intended to demonstrate the
00023  *           firmware updates over BLE. Refer @ref dfu_ble_service_spec and @ref
00024  *           dfu_ble_profile_spec for more information on the service and profile respectively.
00025  */
00026 
00027 #ifndef BLE_DFU_H__
00028 #define BLE_DFU_H__
00029 
00030 #include <stdint.h>
00031 #include "ble_gatts.h"
00032 #include "ble.h"
00033 #include "ble_srv_common.h "
00034 
00035 #define BLE_DFU_SERVICE_UUID     0x1530                                 /**< The UUID of the DFU Service. */
00036 #define BLE_DFU_PKT_CHAR_UUID    0x1532                                 /**< The UUID of the DFU Packet Characteristic. */
00037 #define BLE_DFU_CTRL_PT_UUID     0x1531                                 /**< The UUID of the DFU Control Point. */
00038 #define BLE_DFU_STATUS_REP_UUID  0x1533                                 /**< The UUID of the DFU Status Report Characteristic. */
00039 
00040 
00041 /**@brief   DFU Event type.
00042  *
00043  * @details This enumeration contains the types of events that will be received from the DFU Service.
00044  */
00045 typedef enum
00046 {
00047     BLE_DFU_START,                                                      /**< The event indicating that the peer wants the application to prepare for a new firmware update. */
00048     BLE_DFU_RECEIVE_INIT_DATA,                                          /**< The event indicating that the peer wants the application to prepare to receive init parameters. */
00049     BLE_DFU_RECEIVE_APP_DATA,                                           /**< The event indicating that the peer wants the application to prepare to receive the new firmware image. */
00050     BLE_DFU_VALIDATE,                                                   /**< The event indicating that the peer wants the application to validate the newly received firmware image. */
00051     BLE_DFU_ACTIVATE_N_RESET,                                           /**< The event indicating that the peer wants the application to undergo activate new firmware and restart with new valid application */
00052     BLE_DFU_SYS_RESET,                                                  /**< The event indicating that the peer wants the application to undergo a reset and start the currently valid application image.*/
00053     BLE_DFU_PKT_RCPT_NOTIF_ENABLED,                                     /**< The event indicating that the peer has enabled packet receipt notifications. It is the responsibility of the application to call @ref ble_dfu_pkts_rcpt_notify each time the number of packets indicated by num_of_pkts field in @ref ble_dfu_evt_t is received.*/
00054     BLE_DFU_PKT_RCPT_NOTIF_DISABLED,                                    /**< The event indicating that the peer has disabled the packet receipt notifications.*/
00055     BLE_DFU_PACKET_WRITE,                                               /**< The event indicating that the peer has written a value to the 'DFU Packet' characteristic. The data received from the peer will be present in the @ref ble_dfu_pkt_write element contained within @ref ble_dfu_evt_t.*/
00056     BLE_DFU_BYTES_RECEIVED_SEND                                         /**< The event indicating that the peer is requesting for the number of bytes of firmware data last received by the application. It is the responsibility of the application to call @ref ble_dfu_pkts_rcpt_notify in response to this event. */
00057 } ble_dfu_evt_type_t;
00058 
00059 /**@brief   DFU Procedure type.
00060  *
00061  * @details This enumeration contains the types of DFU procedures.
00062  */
00063 typedef enum
00064 {
00065     BLE_DFU_START_PROCEDURE        = 1,                                 /**< DFU Start procedure.*/
00066     BLE_DFU_INIT_PROCEDURE         = 2,                                 /**< DFU Initialization procedure.*/
00067     BLE_DFU_RECEIVE_APP_PROCEDURE  = 3,                                 /**< Firmware receiving procedure.*/
00068     BLE_DFU_VALIDATE_PROCEDURE     = 4,                                 /**< Firmware image validation procedure .*/
00069     BLE_DFU_PKT_RCPT_REQ_PROCEDURE = 8                                  /**< Packet receipt notification request procedure. */
00070 } ble_dfu_procedure_t;
00071 
00072 /**@brief   DFU Response value type.
00073  */
00074 typedef enum
00075 {
00076     BLE_DFU_RESP_VAL_SUCCESS = 1,                                       /**< Success.*/
00077     BLE_DFU_RESP_VAL_INVALID_STATE,                                     /**< Invalid state.*/
00078     BLE_DFU_RESP_VAL_NOT_SUPPORTED,                                     /**< Operation not supported.*/
00079     BLE_DFU_RESP_VAL_DATA_SIZE,                                         /**< Data size exceeds limit.*/
00080     BLE_DFU_RESP_VAL_CRC_ERROR,                                         /**< CRC Error.*/
00081     BLE_DFU_RESP_VAL_OPER_FAILED                                        /**< Operation failed.*/
00082 } ble_dfu_resp_val_t;
00083 
00084 /**@brief   DFU Packet structure.
00085  *
00086  * @details This structure contains the value of the DFU Packet characteristic as written by the
00087  *          peer and the length of the value written. It will be filled by the DFU Service when the
00088  *          peer writes to the DFU Packet characteristic.
00089  */
00090 typedef struct
00091 {
00092     uint8_t                      len;                                   /**< Length of the packet received. */
00093     uint8_t *                    p_data;                                /**< Pointer to the received packet. This will point to a word aligned memory location.*/
00094 } ble_dfu_pkt_write_t;
00095 
00096 /**@brief   Packet receipt notification request structure.
00097  *
00098  * @details This structure contains the contents of the packet receipt notification request
00099  *          sent by the DFU Controller.
00100  */
00101 typedef struct
00102 {
00103     uint16_t                     num_of_pkts;                           /**< The number of packets of firmware data to be received by application before sending the next Packet Receipt Notification to the peer. */
00104 } ble_pkt_rcpt_notif_req_t;
00105 
00106 /**@brief   DFU Event structure.
00107  *
00108  * @details This structure contains the event generated by the DFU Service based on the data
00109  *          received from the peer.
00110  */
00111 typedef struct
00112 {
00113     ble_dfu_evt_type_t           ble_dfu_evt_type;                      /**< Type of the event.*/
00114     union
00115     {
00116         ble_dfu_pkt_write_t      ble_dfu_pkt_write;                     /**< The DFU packet received. This field is when the @ref ble_dfu_evt_type field is set to @ref BLE_DFU_PACKET_WRITE.*/
00117         ble_pkt_rcpt_notif_req_t pkt_rcpt_notif_req;                    /**< Packet receipt notification request. This field is when the @ref ble_dfu_evt_type field is set to @ref BLE_DFU_PKT_RCPT_NOTIF_ENABLED.*/
00118     } evt;
00119 } ble_dfu_evt_t;
00120 
00121 // Forward declaration of the ble_dfu_t type.
00122 typedef struct ble_dfu_s ble_dfu_t;
00123 
00124 /**@brief DFU Service event handler type. */
00125 typedef void (*ble_dfu_evt_handler_t) (ble_dfu_t * p_dfu, ble_dfu_evt_t * p_evt);
00126 
00127 /**@brief   DFU service structure.
00128  *
00129  * @details This structure contains status information related to the service.
00130  */
00131 typedef struct ble_dfu_s
00132 {
00133     uint16_t                     conn_handle;                           /**< Handle of the current connection (as provided by the S110 SoftDevice). This will be BLE_CONN_HANDLE_INVALID when not in a connection. */
00134     uint16_t                     service_handle;                        /**< Handle of DFU Service (as provided by the S110 SoftDevice). */
00135     uint8_t                      uuid_type;                             /**< UUID type assigned for DFU Service by the S110 SoftDevice. */
00136     ble_gatts_char_handles_t     dfu_pkt_handles;                       /**< Handles related to the DFU Packet characteristic. */
00137     ble_gatts_char_handles_t     dfu_ctrl_pt_handles;                   /**< Handles related to the DFU Control Point characteristic. */
00138     ble_gatts_char_handles_t     dfu_status_rep_handles;                /**< Handles related to the DFU Status Report characteristic. */
00139     ble_dfu_evt_handler_t        evt_handler;                           /**< The event handler to be called when an event is to be sent to the application.*/
00140     ble_srv_error_handler_t      error_handler;                         /**< Function to be called in case of an error. */
00141 } ble_dfu_t;
00142 
00143 /**@brief      DFU service initialization structure.
00144  *
00145  * @details    This structure contains the initialization information for the DFU Service. The
00146  *             application needs to fill this structure and pass it to the DFU Service using the
00147  *             @ref ble_dfu_init function.
00148  */
00149 typedef struct
00150 {
00151     ble_dfu_evt_handler_t        evt_handler;                           /**< Event handler to be called for handling events in the Device Firmware Update Service. */
00152     ble_srv_error_handler_t      error_handler;                         /**< Function to be called in case of an error. */
00153 } ble_dfu_init_t;
00154 
00155 /**@brief      Function for handling a BLE event.
00156  *
00157  * @details    The DFU service expects the application to call this function each time an event
00158  *             is received from the S110 SoftDevice. This function processes the event, if it is
00159  *             relevant for the DFU service and calls the DFU event handler of the application if
00160  *             necessary.
00161  *
00162  * @param[in]  p_dfu        Pointer to the DFU service structure.
00163  * @param[in]  p_ble_evt    Pointer to the event received from S110 SoftDevice.
00164  */
00165 void ble_dfu_on_ble_evt(ble_dfu_t * p_dfu, ble_evt_t * p_ble_evt);
00166 
00167 /**@brief      Function for initializing the DFU service.
00168  *
00169  * @param[out] p_dfu        Device Firmware Update service structure. This structure will have to be
00170  *                          supplied by the application. It will be initialized by this function,
00171  *                          and will later be used to identify the service instance.
00172  * @param[in]  p_dfu_init   Information needed to initialize the service.
00173  *
00174  * @return     NRF_SUCCESS if the DFU service and its characteristics were successfully added to the
00175  *             S110 SoftDevice. Otherwise an error code.
00176  *             This function returns NRF_ERROR_NULL if the value of evt_handler in p_dfu_init
00177  *             structure provided is NULL or if the pointers supplied as input are NULL.
00178  */
00179 uint32_t ble_dfu_init(ble_dfu_t * p_dfu, ble_dfu_init_t * p_dfu_init);
00180 
00181 /**@brief       Function for sending response to a control point command.
00182  *
00183  * @details     This function will encode a DFU Control Point response using the given input
00184  *              parameters and will send a notification of the same to the peer.
00185  *
00186  * @param[in]   p_dfu       Pointer to the DFU service structure.
00187  * @param[in]   dfu_proc    Procedure for which this response is to be sent.
00188  * @param[in]   resp_val    Response value.
00189  *
00190  * @return      NRF_SUCCESS if the DFU Service has successfully requested the S110 SoftDevice to
00191  *              send the notification. Otherwise an error code.
00192  *              This function returns NRF_ERROR_INVALID_STATE if the device is not connected to a
00193  *              peer or if the DFU service is not initialized or if the notification of the DFU
00194  *              Status Report characteristic was not enabled by the peer. It returns NRF_ERROR_NULL
00195  *              if the pointer p_dfu is NULL.
00196  */
00197 uint32_t ble_dfu_response_send(ble_dfu_t *          p_dfu,
00198                                ble_dfu_procedure_t  dfu_proc,
00199                                ble_dfu_resp_val_t   resp_val);
00200 
00201 /**@brief      Function for notifying the peer about the number of bytes of firmware data received.
00202  *
00203  * @param[in]  p_dfu                      Pointer to the DFU service structure.
00204  * @param[in]  num_of_firmware_bytes_rcvd Number of bytes.
00205  *
00206  * @return     NRF_SUCCESS if the DFU Service has successfully requested the S110 SoftDevice to send
00207  *             the notification. Otherwise an error code.
00208  *             This function returns NRF_ERROR_INVALID_STATE if the device is not connected to a
00209  *             peer or if the DFU service is not initialized or if the notification of the DFU
00210  *             Status Report characteristic was not enabled by the peer. It returns NRF_ERROR_NULL
00211  *             if the pointer p_dfu is NULL.
00212  */
00213 uint32_t ble_dfu_bytes_rcvd_report(ble_dfu_t * p_dfu, uint32_t num_of_firmware_bytes_rcvd);
00214 
00215 /**@brief      Function for sending Packet Receipt Notification to the peer.
00216  *
00217  *             This function will encode the number of bytes received as input parameter into a
00218  *             notification of the control point characteristic and send it to the peer.
00219  *
00220  * @param[in]  p_dfu                      Pointer to the DFU service structure.
00221  * @param[in]  num_of_firmware_bytes_rcvd Number of bytes of firmware image received.
00222  *
00223  * @return     NRF_SUCCESS if the DFU Service has successfully requested the S110 SoftDevice to send
00224  *             the notification. Otherwise an error code.
00225  *             This function returns NRF_ERROR_INVALID_STATE if the device is not connected to a
00226  *             peer or if the DFU service is not initialized or if the notification of the DFU
00227  *             Status Report characteristic was not enabled by the peer. It returns NRF_ERROR_NULL
00228  *             if the pointer p_dfu is NULL.
00229  */
00230 uint32_t ble_dfu_pkts_rcpt_notify(ble_dfu_t * p_dfu, uint32_t num_of_firmware_bytes_rcvd);
00231 
00232 #endif // BLE_DFU_H__
00233 
00234 /** @} */