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我使用GATT_WriteCharValue( uint16 connHandle, attWriteReq_t *pReq, uint8 taskId )向从机发送数据,主机这边返回的是ATT_ERROR_RSP(
If the return status from this function is SUCCESS, the calling application task will receive an OSAL GATT_MSG_EVENT message. The type of the message will be either ATT_WRITE_RSP or ATT_ERROR_RSP (if an error occurred on the server) ),从机那边没有调用simpleProfile_WriteAttrCB。用手机向从机Write能接收到数据。请问这是什么原因?谢谢! |
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谢谢您的回答! 我是这样写的: vdid CentralSendToPeripheral(uint16 ConnHandle, uint16 handle, uint8*p, uint8 len ) [ arrWriteReq_t req; req.handle = handle; req.len = len; req.sig = 0; req.cmd = 0; osal_memcpy(req.val, p, len); (void)GATT_WriteCharValue(ConnHandle,&req,serial_TaskID); ] 请问这有什么问题? |
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chenliyun 发表于 2020-3-18 07:00 下面的例子是获取CHAR1的handle的,请问我要获取CHAR2的handle应该怎么改?我更改req.type.uuid[0] = LO_UINT16(SIMPLEPROFILE_CHAR2_UUID); req.type.uuid[1] = HI_UINT16(SIMPLEPROFILE_CHAR2_UUID);后为什么获取不了?请问还有什么地方需要更改的?谢谢! static void simpleBLEGATTDiscoveryEvent( gattMsgEvent_t *pMsg ) [ attReadByTypeReq_t req; if ( simpleBLEDiscState == BLE_DISC_STATE_SVC ) [ // Service found, store handles if ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP && pMsg->msg.findByTypeValueRsp.numInfo > 0 ) [ simpleBLESvcStartHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].handle; simpleBLESvcEndHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].grpEndHandle; ] // If procedure complete if ( ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP && pMsg->hdr.status == bleProcedureComplete ) || ( pMsg->method == ATT_ERROR_RSP ) ) [ if ( simpleBLESvcStartHdl != 0 ) [ // Discover characteristic simpleBLEDiscState = BLE_DISC_STATE_CHAR; req.startHandle = simpleBLESvcStartHdl; req.endHandle = simpleBLESvcEndHdl; req.type.len = ATT_BT_UUID_SIZE; req.type.uuid[0] = LO_UINT16(SIMPLEPROFILE_CHAR1_UUID); req.type.uuid[1] = HI_UINT16(SIMPLEPROFILE_CHAR1_UUID); GATT_ReadUsingCharUUID( simpleBLEConnHandle, &req, simpleBLETaskId ); ] ] ] else if ( simpleBLEDiscState == BLE_DISC_STATE_CHAR ) [ // Characteristic found, store handle if ( pMsg->method == ATT_READ_BY_TYPE_RSP && pMsg->msg.readByTypeRsp.numPairs > 0 ) [ simpleBLECharHdl = BUILD_UINT16( pMsg->msg.readByTypeRsp.dataList[0], pMsg->msg.readByTypeRsp.dataList[1] ); LCD_WRITE_STRING( "Simple Svc Found", HAL_LCD_LINE_1 ); simpleBLEProcedureInProgress = FALSE; ] simpleBLEDiscState = BLE_DISC_STATE_IDLE; ] ] |
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