蓝牙BLE从机Peripheral讲解六（动态广播与连接）

一、动态广播内容

动态修改广播包需要对广播包里面的数据进行重新赋值即可。通过TMOS任务处理。

if(events & DYNAMIC_advertData)  //动态广播包内容
    {
        tmos_memset(advertData, 0, 31);
        advertData[0] = 0x03;
        advertData[1] = 0xFF;
        advertData[2] = addnum;
        advertData[3] = 'a';
        addnum++;
        printf("Start Dynamic advertData......%d\r\n", addnum);
        GAP_UpdateAdvertisingData(Peripheral_TaskID, TRUE, sizeof(advertData), advertData);
        tmos_start_task(Peripheral_TaskID, DYNAMIC_advertData, 1600);
        return (events ^ DYNAMIC_advertData);
    }

二、动态广播间隔

动态修改广播间隔需要先关闭广播，然后修改广播间隔，等到协议栈重新进入等待广播时再重新打开广播。

if(events & DYNAMIC_AdvInterval_Close)  //动态广播包内容(关闭广播)
    {
        uint8 initial_advertising_enable = FALSE;
        GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable );
        printf("Close Dynamic Advertise Interval...\r\n");
        add_time += 40;
        if(add_time > 1600){
                add_time = 40;
        }
        PRINT("add_time = %d\n", add_time);
        GAP_SetParamValue( TGAP_DISC_ADV_INT_MIN, add_time );
        GAP_SetParamValue( TGAP_DISC_ADV_INT_MAX, add_time );
        return (events ^ DYNAMIC_AdvInterval_Close);
    }

if(pEvent->gap.opcode == GAP_END_DISCOVERABLE_DONE_EVENT)
{
    PRINT("Waiting for advertising..\n");
    tmos_set_event(Peripheral_TaskID, DYNAMIC_AdvInterval_Open);
}

if(events & DYNAMIC_AdvInterval_Open)  //动态广播包内容（开启广播）
    {
        printf("Open Dynamic Advertise Interval...\r\n");
        uint8 initial_advertising_enable =  TRUE;
        GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable );
        tmos_start_task(Peripheral_TaskID, DYNAMIC_AdvInterval_Close, 1600);
        return (events ^ DYNAMIC_AdvInterval_Open);
    }

三、配置广播应答

    uint16_t adv_event_continue = 1<<1;
    GAP_SetParamValue( TGAP_ADV_SCAN_REQ_NOTIFY, adv_event_continue );