微信小程序与RSL10蓝牙双向通信

dql2016

微信小程序与RSL10蓝牙双向通信 [复制链接]

 

连接成功后，RSL10采集的数据用通知的方式发送给微信小程序，之前一直卡在微信小程序无法发送数据给RSL10，经过摸索发现将ble_custom.c中的写特征值的读权限去掉就ok了，修改如下所示：

/* ----------------------------------------------------------------------------
 * Function      : void CustomService_ServiceAdd(void)
 * ----------------------------------------------------------------------------
 * Description   : Send request to add custom profile into the attribute
 *                 database.Defines the different access functions
 *                 (setter/getter commands to access the different
 *                 characteristic attributes).
 * Inputs        : None
 * Outputs       : None
 * Assumptions   : None
 * ------------------------------------------------------------------------- */
void CustomService_ServiceAdd(void)
{
    struct gattm_add_svc_req *req =
        KE_MSG_ALLOC_DYN(GATTM_ADD_SVC_REQ,
                         TASK_GATTM, TASK_APP,
                         gattm_add_svc_req,
                         CS_IDX_NB * sizeof(struct gattm_att_desc));

    const uint8_t svc_uuid[ATT_UUID_128_LEN] = CS_SVC_UUID;

    const struct gattm_att_desc att[CS_IDX_NB] =
    {
        /* Attribute Index  = Attribute properties: UUID,
         *                                          Permissions,
         *                                          Max size,
         *                                          Extra permissions */

        /* TX Characteristic */
        [CS_IDX_TX_VALUE_CHAR]     = ATT_DECL_CHAR(),

        [CS_IDX_TX_VALUE_VAL]      = ATT_DECL_CHAR_UUID_128(CS_CHARACTERISTIC_TX_UUID,
                                                            PERM(RD, ENABLE) | PERM(NTF, ENABLE),
                                                            CS_TX_VALUE_MAX_LENGTH),

        [CS_IDX_TX_VALUE_CCC]      = ATT_DECL_CHAR_CCC(),

        [CS_IDX_TX_VALUE_USR_DSCP] = ATT_DECL_CHAR_USER_DESC(CS_USER_DESCRIPTION_MAX_LENGTH),

        /* RX Characteristic */
        [CS_IDX_RX_VALUE_CHAR]     = ATT_DECL_CHAR(),

        /*[CS_IDX_RX_VALUE_VAL]      = ATT_DECL_CHAR_UUID_128(CS_CHARACTERISTIC_RX_UUID,
                                                            PERM(RD, ENABLE) | PERM(WRITE_REQ, ENABLE)
                                                            | PERM(WRITE_COMMAND, ENABLE),
                                                            CS_RX_VALUE_MAX_LENGTH),*/

		//只具备写权限
		[CS_IDX_RX_VALUE_VAL]      = ATT_DECL_CHAR_UUID_128(CS_CHARACTERISTIC_RX_UUID,
													        PERM(WRITE_REQ, ENABLE)
													        | PERM(WRITE_COMMAND, ENABLE),
													        CS_RX_VALUE_MAX_LENGTH),

        [CS_IDX_RX_VALUE_CCC]      = ATT_DECL_CHAR_CCC(),
        [CS_IDX_RX_VALUE_USR_DSCP] = ATT_DECL_CHAR_USER_DESC(CS_USER_DESCRIPTION_MAX_LENGTH),
    };

    /* Fill the add custom service message */
    req->svc_desc.start_hdl = 0;
    req->svc_desc.task_id = TASK_APP;
    req->svc_desc.perm = PERM(SVC_UUID_LEN, UUID_128);
    req->svc_desc.nb_att = CS_IDX_NB;

    memcpy(&req->svc_desc.uuid[0], &svc_uuid[0], ATT_UUID_128_LEN);

    for (unsigned int i = 0; i < CS_IDX_NB; i++)
    {
        memcpy(&req->svc_desc.atts, &att,
               sizeof(struct gattm_att_desc));
    }

    /* Send the message */
    ke_msg_send(req);
}

微信小程序接收的蓝牙数据是16进制的字符串形式，需要做一下转换才能正常显示，微信小程序发送给RSL10的数据直接在主循环读出来即可。至此，微信小程序和RSL10通过蓝牙双向收发数据就调通了，后面就是完善一下小程序的功能，例如给设备改名字启动后自动绑定设备；增加数据库存储数据，然后进行曲线图表的展示。

 

lightxixi

恭喜楼主又攻克一个难题，也感谢避坑分享！

sp059746

恭喜楼主

7905

这个要学习一下