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以下两个宏定义是我添加的。其中USING_128BIT_UUID的条件编译部分是SDK原生部分，USING_16BIT_UUID条件编译部分则是由我修改，通过这样的修改，128BIT UUID就变更为16BIT UUID了。如果你的广播、扫描响应有涉及UUID，不要忘记更改它。

#define USING_128BIT_UUID (0)//使用128bit UUID，请定义为1.
#define USING_16BIT_UUID  (1)//使用16bit UUID，请定义为1.

/******************************************************************************************** @file otas.c** @brief Over The Air Server Implementation.****************************************************************************************** @attention#####Copyright (c) 2019 GOODIXAll rights reserved.Redistribution and use in source and binary forms, with or withoutmodification, are permitted provided that the following conditions are met:* Redistributions of source code must retain the above copyrightnotice, this list of conditions and the following disclaimer.* Redistributions in binary form must reproduce the above copyrightnotice, this list of conditions and the following disclaimer in thedocumentation and/or other materials provided with the distribution.* Neither the name of GOODIX nor the names of its contributors may be usedto endorse or promote products derived from this software withoutspecific prior written permission.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THEIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSEARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BELIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, ORCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OFSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESSINTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER INCONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF SUCH DAMAGE.******************************************************************************************//** INCLUDE FILES*****************************************************************************************/
#include "otas.h"
#include "ble_prf_types.h"
#include "ble_prf_utils.h"
#include "utility.h"#define USING_128BIT_UUID (0)//使用128bit UUID，请定义为1.
#define USING_16BIT_UUID  (1)//使用16bit UUID，请定义为1.
/** DEFINES*****************************************************************************************/
/**@brief Proprietary UUIDs. */
#if(USING_128BIT_UUID==1)#define OTA_SERVICE_UUID         {0x1B, 0xD7, 0x90, 0xEC, 0xE8, 0xB9, 0x75, 0x80, 0x0A, 0x46, 0x44, 0xD3, 0x01, 0x04, 0xED, 0xA6}#define OTA_SERVICE_TX_UUID      {0x1B, 0xD7, 0x90, 0xEC, 0xE8, 0xB9, 0x75, 0x80, 0x0A, 0x46, 0x44, 0xD3, 0x02, 0x04, 0xED, 0xA6}#define OTA_SERVICE_RX_UUID      {0x1B, 0xD7, 0x90, 0xEC, 0xE8, 0xB9, 0x75, 0x80, 0x0A, 0x46, 0x44, 0xD3, 0x03, 0x04, 0xED, 0xA6}#define OTA_SERVICE_CTRL_UUID    {0x1B, 0xD7, 0x90, 0xEC, 0xE8, 0xB9, 0x75, 0x80, 0x0A, 0x46, 0x44, 0xD3, 0x04, 0x04, 0xED, 0xA6}
#elif(USING_16BIT_UUID==1)#define OTA_SERVICE_UUID         0xFF00#define OTA_SERVICE_TX_UUID      0xFF01#define OTA_SERVICE_RX_UUID      0xFF02#define OTA_SERVICE_CTRL_UUID    0xFF03
#endif/**@brief Macros for conversion of 128bit to 16bit UUID. */
#if(USING_128BIT_UUID==1)#define ATT_128_PRIMARY_SERVICE     BLE_ATT_16_TO_128_ARRAY(BLE_ATT_DECL_PRIMARY_SERVICE)#define ATT_128_CHARACTERISTIC      BLE_ATT_16_TO_128_ARRAY(BLE_ATT_DECL_CHARACTERISTIC)#define ATT_128_CLIENT_CHAR_CFG     BLE_ATT_16_TO_128_ARRAY(BLE_ATT_DESC_CLIENT_CHAR_CFG)
#elif(USING_16BIT_UUID==1)#endif
/** ENUMERATIONS*****************************************************************************************/
/**@brief OTA Service Attributes Indexes. */
enum otas_attr_idx_tag
{OTAS_IDX_SVC,OTAS_IDX_TX_CHAR,OTAS_IDX_TX_VAL,OTAS_IDX_TX_CFG,OTAS_IDX_RX_CHAR,OTAS_IDX_RX_VAL,OTAS_IDX_CTRL_CHAR,OTAS_IDX_CTRL_VAL,OTAS_IDX_NB,
};/** STRUCT DEFINE*****************************************************************************************/
struct otas_env_t
{otas_init_t             otas_init;uint16_t                ntf_cfg[OTAS_CONNECTION_MAX];uint16_t                start_hdl;ble_gatts_create_db_t   otas_att_db;
};/** LOCAL VARIABLE DEFINITIONS*****************************************************************************************/
static struct otas_env_t s_otas_env;
static uint16_t          s_char_mask = 0xff;
#if(USING_128BIT_UUID==1)static const uint8_t     s_otas_svc_uuid[] = {BLE_UUID_OTA_SERVICE};
#elif(USING_16BIT_UUID==1)static const uint8_t     s_otas_svc_uuid[] = BLE_ATT_16_TO_16_ARRAY(OTA_SERVICE_UUID);
#endif/**@brief Full OTAS Database Description - Used to add attributes into the database. */
#if(USING_128BIT_UUID==1)static const ble_gatts_attm_desc_128_t otas_att_db[OTAS_IDX_NB] = {static const ble_gatts_attm_desc_t otas_att_db[OTAS_IDX_NB] = {// OTA service[OTAS_IDX_SVC] = {ATT_128_PRIMARY_SERVICE, BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA TX Characteristic Declaration[OTAS_IDX_TX_CHAR] = {ATT_128_CHARACTERISTIC,BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA TX Characteristic Value[OTAS_IDX_TX_VAL]  = {OTA_SERVICE_TX_UUID,BLE_GATTS_NOTIFY_PERM_UNSEC, (BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_128)),OTAS_MAX_DATA_LEN},// OTA TX Characteristic - Client Characteristic Configuration Descriptor[OTAS_IDX_TX_CFG]  = {ATT_128_CLIENT_CHAR_CFG,BLE_GATTS_READ_PERM_UNSEC| BLE_GATTS_WRITE_REQ_PERM_UNSEC,0,0},// OTA RX Characteristic Declaration[OTAS_IDX_RX_CHAR] = {ATT_128_CHARACTERISTIC, BLE_GATTS_READ_PERM_UNSEC, 0, 0 },// OTA RX Characteristic Value[OTAS_IDX_RX_VAL]  = {OTA_SERVICE_RX_UUID,BLE_GATTS_WRITE_CMD_PERM_UNSEC,(BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_128)),OTAS_MAX_DATA_LEN},// OTA CTRL Characteristic Declaration[OTAS_IDX_CTRL_CHAR] = {ATT_128_CHARACTERISTIC, BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA CTRL Characteristic Value[OTAS_IDX_CTRL_VAL]  = {OTA_SERVICE_CTRL_UUID,BLE_GATTS_WRITE_CMD_PERM_UNSEC,(BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_128)),sizeof(uint32_t)},
};
#elif(USING_16BIT_UUID==1)
static const ble_gatts_attm_desc_t otas_att_db[OTAS_IDX_NB] = {// OTA service[OTAS_IDX_SVC] = {BLE_ATT_DECL_PRIMARY_SERVICE, BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA TX Characteristic Declaration[OTAS_IDX_TX_CHAR] = {BLE_ATT_DECL_CHARACTERISTIC,BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA TX Characteristic Value[OTAS_IDX_TX_VAL]  = {OTA_SERVICE_TX_UUID,BLE_GATTS_NOTIFY_PERM_UNSEC, (BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_16)),OTAS_MAX_DATA_LEN},// OTA TX Characteristic - Client Characteristic Configuration Descriptor[OTAS_IDX_TX_CFG]  = {BLE_ATT_DESC_CLIENT_CHAR_CFG,BLE_GATTS_READ_PERM_UNSEC| BLE_GATTS_WRITE_REQ_PERM_UNSEC,0,0},// OTA RX Characteristic Declaration[OTAS_IDX_RX_CHAR] = {BLE_ATT_DECL_CHARACTERISTIC, BLE_GATTS_READ_PERM_UNSEC, 0, 0 },// OTA RX Characteristic Value[OTAS_IDX_RX_VAL]  = {OTA_SERVICE_RX_UUID,BLE_GATTS_WRITE_CMD_PERM_UNSEC,(BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_16)),OTAS_MAX_DATA_LEN},// OTA CTRL Characteristic Declaration[OTAS_IDX_CTRL_CHAR] = {BLE_ATT_DECL_CHARACTERISTIC, BLE_GATTS_READ_PERM_UNSEC, 0, 0},// OTA CTRL Characteristic Value[OTAS_IDX_CTRL_VAL]  = {OTA_SERVICE_CTRL_UUID,BLE_GATTS_WRITE_CMD_PERM_UNSEC,(BLE_GATTS_ATT_VAL_LOC_USER | BLE_GATTS_ATT_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_16)),sizeof(uint32_t)},
};
#endif
/** LOCAL FUNCTION DEFINITIONS*****************************************************************************************/
/******************************************************************************************** @brief Handles reception of the attribute info request message.** @param[in] conn_idx: Connection index* @param[in] p_param:  The parameters of the read request.******************************************************************************************/
static void otas_read_att_evt_handler(uint8_t conn_idx, const ble_gatts_evt_read_t *p_param)
{ble_gatts_read_cfm_t    cfm;uint8_t                 handle     = p_param->handle;uint8_t                 tab_index  = 0;tab_index = prf_find_idx_by_handle(handle, s_otas_env.start_hdl, OTAS_IDX_NB, (uint8_t*)&s_char_mask);cfm.handle = handle;cfm.status = BLE_SUCCESS;switch(tab_index){case OTAS_IDX_TX_CFG:cfm.length = sizeof(uint16_t);cfm.value = (uint8_t *)(&s_otas_env.ntf_cfg[conn_idx]);break;default:cfm.length = 0;cfm.status = BLE_ATT_ERR_INVALID_HANDLE;break;}ble_gatts_read_cfm(conn_idx,&cfm);
}/******************************************************************************************** @brief Handles reception of the write request.** @param[in] conn_idx: of connection index* @param[in] p_param: Pointer to the parameters of the write request.******************************************************************************************/
static void otas_write_att_evt_handler(uint8_t conn_idx, const ble_gatts_evt_write_t *p_param)
{ble_gatts_write_cfm_t   cfm;uint8_t                 handle     = p_param->handle;uint8_t                 tab_index  = 0;uint16_t                cccd_value = 0;otas_evt_t              event;tab_index = prf_find_idx_by_handle(handle, s_otas_env.start_hdl, OTAS_IDX_NB, (uint8_t*)&s_char_mask);cfm.handle = handle;cfm.status = BLE_SUCCESS;switch(tab_index){case OTAS_IDX_RX_VAL:if(s_otas_env.otas_init.evt_handler != NULL){event.conn_idx = conn_idx;event.evt_type = OTAS_EVT_RX_RECEIVE_DATA;event.p_data = (uint8_t*)p_param->value;event.length = p_param->length;s_otas_env.otas_init.evt_handler(&event);}break;case OTAS_IDX_TX_CFG:cccd_value = le16toh(&p_param->value[0]);if(s_otas_env.otas_init.evt_handler != NULL){event.conn_idx = conn_idx;event.evt_type = (cccd_value == PRF_CLI_START_NTF) ?\OTAS_EVT_TX_NOTIFICATION_ENABLED :OTAS_EVT_TX_NOTIFICATION_DISABLED;s_otas_env.otas_init.evt_handler(&event);}s_otas_env.ntf_cfg[conn_idx] = cccd_value;break;case OTAS_IDX_CTRL_VAL:if(le32toh(&p_param->value[0]) == OTAS_CTRL_ENTER_DFU){if(s_otas_env.otas_init.evt_handler != NULL){event.conn_idx = conn_idx;event.evt_type = OTAS_EVT_DFU_MODE_ENTER;s_otas_env.otas_init.evt_handler(&event);}}break;default:cfm.status = BLE_ATT_ERR_INVALID_HANDLE;break;}ble_gatts_write_cfm(conn_idx,&cfm);
}/******************************************************************************************** @brief Handles reception of the cccd recover request.** @param[in]: conn_idx:   Connection index* @param[in]: handle:     The handle of cccd attribute.* @param[in]: cccd_value: The value of cccd attribute.******************************************************************************************/
static void otas_cccd_set_evt_handler(uint8_t conn_idx, uint16_t handle, uint16_t cccd_value)
{uint8_t           tab_index  = 0;otas_evt_t        event;if (!prf_is_cccd_value_valid(cccd_value)){return;}tab_index = prf_find_idx_by_handle(handle, s_otas_env.start_hdl, OTAS_IDX_NB, (uint8_t*)&s_char_mask);switch(tab_index){case OTAS_IDX_TX_CFG:if(s_otas_env.otas_init.evt_handler != NULL){event.conn_idx = conn_idx;event.evt_type = (cccd_value == PRF_CLI_START_NTF) ?\OTAS_EVT_TX_NOTIFICATION_ENABLED :OTAS_EVT_TX_NOTIFICATION_DISABLED;s_otas_env.otas_init.evt_handler(&event);}s_otas_env.ntf_cfg[conn_idx] = cccd_value;break;default:break;}
}/******************************************************************************************** @brief Handles reception of the complete event.** @param[in] conn_idx: Connection index* @param[in] p_param:  Pointer to the parameters of the complete event.** @return If the event was consumed or not.******************************************************************************************/
static void otas_ntf_cplt_evt_handler(uint8_t conn_idx, uint8_t status, const ble_gatts_evt_ntf_ind_t *p_ntf_ind)
{if(s_otas_env.otas_init.evt_handler != NULL){otas_evt_t event;event.conn_idx = conn_idx;if(status == BLE_SUCCESS){if(p_ntf_ind->type == BLE_GATT_NOTIFICATION){event.evt_type = OTAS_EVT_NOTIFY_COMPLETE;s_otas_env.otas_init.evt_handler(&event);}}}}static void otas_ble_evt_handler(const ble_evt_t *p_evt)
{if (NULL == p_evt){return;}switch (p_evt->evt_id){case BLE_GATTS_EVT_READ_REQUEST:otas_read_att_evt_handler(p_evt->evt.gatts_evt.index, &p_evt->evt.gatts_evt.params.read_req);break;case BLE_GATTS_EVT_WRITE_REQUEST:otas_write_att_evt_handler(p_evt->evt.gatts_evt.index, &p_evt->evt.gatts_evt.params.write_req);break;case BLE_GATTS_EVT_NTF_IND:otas_ntf_cplt_evt_handler(p_evt->evt.gatts_evt.index, p_evt->evt_status, &p_evt->evt.gatts_evt.params.ntf_ind_sended);break;case BLE_GATTS_EVT_CCCD_RECOVERY:otas_cccd_set_evt_handler(p_evt->evt.gatts_evt.index, p_evt->evt.gatts_evt.params.cccd_recovery.handle, p_evt->evt.gatts_evt.params.cccd_recovery.cccd_val);break;}
}/** GLOBAL FUNCTION DEFINITIONS*****************************************************************************************/
sdk_err_t otas_notify_tx_data(uint8_t conn_idx,uint8_t* p_data,uint16_t len)
{sdk_err_t            error_code = SDK_ERR_NTF_DISABLED;ble_gatts_noti_ind_t send_cmd;if(s_otas_env.ntf_cfg[conn_idx] == PRF_CLI_START_NTF){// Fill in the parameter structuresend_cmd.type = BLE_GATT_NOTIFICATION;send_cmd.handle = prf_find_handle_by_idx(OTAS_IDX_TX_VAL, s_otas_env.start_hdl, (uint8_t*)&s_char_mask);// pack measured value in databasesend_cmd.length = len;send_cmd.value  = p_data;// send notification to peer deviceerror_code = ble_gatts_noti_ind(conn_idx,&send_cmd);}   return error_code;
}sdk_err_t otas_service_init(otas_init_t *p_otas_init)
{if (NULL == p_otas_init){return SDK_ERR_POINTER_NULL;}s_otas_env.otas_init.evt_handler = p_otas_init->evt_handler;memset(&s_otas_env.otas_att_db, 0, sizeof(ble_gatts_create_db_t));s_otas_env.start_hdl = PRF_INVALID_HANDLE;s_otas_env.otas_att_db.shdl                  = &s_otas_env.start_hdl;s_otas_env.otas_att_db.uuid                  = s_otas_svc_uuid;s_otas_env.otas_att_db.attr_tab_cfg          = (uint8_t *)&s_char_mask;s_otas_env.otas_att_db.max_nb_attr           = OTAS_IDX_NB;#if(USING_128BIT_UUID==1)s_otas_env.otas_att_db.srvc_perm             = BLE_GATTS_SRVC_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_128);s_otas_env.otas_att_db.attr_tab_type         = BLE_GATTS_SERVICE_TABLE_TYPE_128;s_otas_env.otas_att_db.attr_tab.attr_tab_128 = otas_att_db;#elif(USING_16BIT_UUID==1)s_otas_env.otas_att_db.srvc_perm             = BLE_GATTS_SRVC_UUID_TYPE_SET(BLE_GATTS_UUID_TYPE_16);s_otas_env.otas_att_db.attr_tab_type         = BLE_GATTS_SERVICE_TABLE_TYPE_16;s_otas_env.otas_att_db.attr_tab.attr_tab_16 = otas_att_db;#endifreturn ble_gatts_prf_add(&s_otas_env.otas_att_db, otas_ble_evt_handler);
}