CH573 CH582 CH592 CH579蓝牙区分不同系统

根据WCH提供是EVT包中的蓝牙从机例程进（Peripheral例程）行修改实现：

步骤一：更改配对模式，将等待对方发起配对改为主动发起配对，

默认是：uint8_t  pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ;

更改为：uint8_t  pairMode = GAPBOND_PAIRING_MODE_INITIATE;

 步骤二：在Peripheral_Init()函数中添加 GATT_InitClient();     

步骤三：添加一个tmos任务用来枚举主机服务handle

此处传入不同的uuid可以获取不同的数据，如0x2a24和0x2a50

步骤四：添加下方程序

static void centralGATTDiscoveryEvent(gattMsgEvent_t *pMsg)
{
    attReadByTypeReq_t req;

    if(centralDiscState == BLE_DISC_STATE_CHAR)
    {
        // Characteristic found, store handle
        if(pMsg->method == ATT_READ_BY_TYPE_RSP &&
           pMsg->msg.readByTypeRsp.numPairs > 0)
        {
            centralCharHdl = BUILD_UINT16(pMsg->msg.readByTypeRsp.pDataList[0],
                                          pMsg->msg.readByTypeRsp.pDataList[1]);

            // Display Characteristic 1 handle
            PRINT("Found Characteristic 1 handle : %x \n", centralCharHdl);
        }
        if((pMsg->method == ATT_READ_BY_TYPE_RSP &&
            pMsg->hdr.status == bleProcedureComplete) ||
           (pMsg->method == ATT_ERROR_RSP))
        {
            attReadReq_t req;
            req.handle = centralCharHdl;
            if(GATT_ReadCharValue(hidEmuConnHandle, &req, hidDevTaskId) == SUCCESS) {

                PRINT("read success \r\n");
                centralProcedureInProgress = TRUE;
            }
            centralDiscState = BLE_DISC_STATE_IDLE;
        }
    }
}

/*********************************************************************
* @fn centralProcessGATTMsg
*
* @brief Process GATT messages
*
* @return none
*/
void centralProcessGATTMsg(gattMsgEvent_t *pMsg)
{
PRINT("pMsg->method :%02x\r\n",pMsg->method );
if(centralState != BLE_STATE_CONNECTED)
{
// In case a GATT message came after a connection has dropped,
// ignore the message
GATT_bm_free(&pMsg->msg, pMsg->method);
return;
}

if((pMsg->method == ATT_EXCHANGE_MTU_RSP) ||
((pMsg->method == ATT_ERROR_RSP) &&
(pMsg->msg.errorRsp.reqOpcode == ATT_EXCHANGE_MTU_REQ)))
{
if(pMsg->method == ATT_ERROR_RSP)
{
uint8_t status = pMsg->msg.errorRsp.errCode;

PRINT("Exchange MTU Error: %x\n", status);
}
centralProcedureInProgress = FALSE;
}

if(pMsg->method == ATT_MTU_UPDATED_EVENT)
{
PRINT("MTU: %x\n", pMsg->msg.mtuEvt.MTU);
}

if((pMsg->method == ATT_READ_RSP) ||
((pMsg->method == ATT_ERROR_RSP) &&
(pMsg->msg.errorRsp.reqOpcode == ATT_READ_REQ)))
{
centralProcedureInProgress = FALSE;
if(pMsg->method == ATT_ERROR_RSP)
{
uint8_t status = pMsg->msg.errorRsp.errCode;

PRINT("Read Error: %x\n", status);
}
else
{
// After a successful read, display the read value
centralProcedureInProgress = FALSE;
PRINT("read len:%03d\r\ndata:",pMsg->msg.readRsp.len);
for(uint8_t i=0;i<pMsg->msg.readRsp.len;i++)
PRINT("%c",pMsg->msg.readRsp.pValue[i]);
PRINT("\n");
hex_dump(pMsg->msg.readRsp.pValue, pMsg->msg.readRsp.len);

// if (pMsg->msg.readRsp.pValue[1] == 0xe0 &&
// pMsg->msg.readRsp.pValue[2]== 0x00 &&
// pMsg->msg.readRsp.pValue[3]== 0x05 &&
// pMsg->msg.readRsp.pValue[4] == 0xc4)
// {
// PRINT("OS_CHROME \r\n");
// }
if (pMsg->msg.readRsp.pValue[0] == 0x01 &&
pMsg->msg.readRsp.pValue[1] == 0x06)
{
PRINT("OS_WINDOWS \r\n");
}

else if (pMsg->msg.readRsp.pValue[0] == 0x69 && // i
pMsg->msg.readRsp.pValue[1] == 0x50) // p
{
if (pMsg->msg.readRsp.pValue[2] == 0x68)
{
PRINT("OS_iPhone \r\n");
}
else
{
PRINT("OS_IOS \r\n");
}
}
else if (pMsg->msg.readRsp.pValue[0] == 0x4d && // m
pMsg->msg.readRsp.pValue[1] == 0x61) // a
{
PRINT("OS_MAC \r\n");
}

else{
tmos_start_task(hidEmuTaskId, START_DIS_SERVICE_EVT2, 1600);
}
}

}
else if((pMsg->method == ATT_WRITE_RSP) ||
((pMsg->method == ATT_ERROR_RSP) &&
(pMsg->msg.errorRsp.reqOpcode == ATT_WRITE_REQ)))
{
if(pMsg->method == ATT_ERROR_RSP)
{
uint8_t status = pMsg->msg.errorRsp.errCode;

PRINT("Write Error: %x\n", status);
}
else
{
// Write success
PRINT("Write success \n");
}

centralProcedureInProgress = FALSE;
}
else if(pMsg->method == ATT_HANDLE_VALUE_NOTI)
{
PRINT("Receive noti: %x\n", *pMsg->msg.handleValueNoti.pValue);
}
else if(centralDiscState != BLE_DISC_STATE_IDLE)
{
centralGATTDiscoveryEvent(pMsg);
}
GATT_bm_free(&pMsg->msg, pMsg->method);
}

 

步骤五：在Peripheral_ProcessTMOSMsg函数中调用centralProcessGATTMsg((gattMsgEvent_t *)pMsg);

static void Peripheral_ProcessTMOSMsg( tmos_event_hdr_t *pMsg )
{
    //PRINT("pMsg->event =%x\r\n",pMsg->event);
    gattMsgEvent_t *gattmsg = (gattMsgEvent_t *)pMsg;
    switch ( pMsg->event ){
        case GATT_MSG_EVENT:
            centralProcessGATTMsg((gattMsgEvent_t *)pMsg);
#if 0
            //gattMsgEvent_t *gattmsg = (gattMsgEvent_t *)pMsg;
            switch(gattmsg->method){
                case ATT_MTU_UPDATED_EVENT:
                    PRINT("mtu update %d\r\n",gattmsg->msg.mtuEvt.MTU);
                    break;
                default:
                    PRINT("gattmsg->method=%02x\r\n",gattmsg->method);
                    break;
            }
#endif
            break;
          default:
              break;
    }
}

步骤六：连接之后调用枚举服务tmos任务tmos_start_task(Peripheral_TaskID, SERVICE_DISCOVER_EVT, 1600);

static void Peripheral_LinkEstablished(gapRoleEvent_t *pEvent)
{
gapEstLinkReqEvent_t *event = (gapEstLinkReqEvent_t *)pEvent;

// See if already connected
if(peripheralConnList.connHandle != GAP_CONNHANDLE_INIT)
{
GAPRole_TerminateLink(pEvent->linkCmpl.connectionHandle);
PRINT("Connection max...\n");
}
else
{
peripheralConnList.connHandle = event->connectionHandle;
peripheralConnList.connInterval = event->connInterval;
peripheralConnList.connSlaveLatency = event->connLatency;
peripheralConnList.connTimeout = event->connTimeout;
peripheralMTU = ATT_MTU_SIZE;
centralState = BLE_STATE_CONNECTED;
// Set timer for periodic event
tmos_start_task(Peripheral_TaskID, SBP_PERIODIC_EVT, SBP_PERIODIC_EVT_PERIOD);

// Set timer for param update event
tmos_start_task(Peripheral_TaskID, SBP_PARAM_UPDATE_EVT, SBP_PARAM_UPDATE_DELAY);

// Start read rssi
tmos_start_task(Peripheral_TaskID, SBP_READ_RSSI_EVT, SBP_READ_RSSI_EVT_PERIOD);

tmos_start_task(Peripheral_TaskID, SERVICE_DISCOVER_EVT, 1600);

PRINT("Conn %x - Int %x \n", event->connectionHandle, event->connInterval);
}
}

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