使用Unity开发在PC端连接并接收蓝牙数据 |
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在开发前，以为蓝牙这块已经很成熟了，基本信手拈来。 蛋是！搜索一圈下来，发现unity支持蓝牙开发的寥寥无几，找下来就发现一个BLE的插件和一个arduino的插件。然而...我要做的是通过PC的蓝牙模块来连接并取得蓝牙传感器数据，开始方了... 由于我是一个unity钉子户，.Net的winform不会写，网上找到的窗体应用也无法复用，又没有开发过蓝牙，项目又催得紧，只能抓紧时间各种找资料。 功夫不负有心人，在stack上找到一个国外大牛的发言，他自己做了一套unity可以调用BLE的库，果断请教。 后来去大佬的github down下来，（末尾已贴链接）本地打开测试后已经可以连接，但是会遇到身份验证无法通过的一个问题，问过硬件厂商说没有加身份验证。 然后偶然发现是我在电脑的蓝牙上需要先连接匹配上传感器，然后在项目内在扫描蓝牙设备，找到自己需要的service name和特征码，点击订阅，就可以接收到传感器的数据了，贴下我自己修改的部分代码，基本没啥大改。 using System; using System.Collections; using System.Collections.Generic; using System.Text; using UnityEngine; using UnityEngine.EventSystems; using UnityEngine.UI; public class Demo : MonoBehaviour { public GameManager manager; public bool isScanningDevices = false; public bool isScanningServices = false; public bool isScanningCharacteristics = false; public bool isSubscribed = false; public Text deviceScanButtonText; public Text deviceScanStatusText; public GameObject deviceScanResultProto; public Button serviceScanButton; public Text serviceScanStatusText; public Dropdown serviceDropdown; public Button characteristicScanButton; public Text characteristicScanStatusText; public Dropdown characteristicDropdown; public Button subscribeButton; public Text subcribeText; public Button writeButton; public InputField writeInput; public Text errorText; Transform scanResultRoot; public string selectedDeviceId; public string selectedServiceId; Dictionary characteristicNames = new Dictionary(); public string selectedCharacteristicId; Dictionary devices = new Dictionary(); string lastError; // Start is called before the first frame update void Start() { scanResultRoot = deviceScanResultProto.transform.parent; deviceScanResultProto.transform.SetParent(null); } GameObject g = null; // Update is called once per frame void Update() { BleApi.ScanStatus status; if (isScanningDevices) { BleApi.DeviceUpdate res = new BleApi.DeviceUpdate(); do { status = BleApi.PollDevice(ref res, false); if (status == BleApi.ScanStatus.AVAILABLE) { if (!devices.ContainsKey(res.id)) { devices[res.id] = new Dictionary() { { "name", "" }, { "isConnectable", "False" } }; } if (res.nameUpdated) devices[res.id]["name"] = res.name; if (res.isConnectableUpdated) devices[res.id]["isConnectable"] = res.isConnectable.ToString(); // consider only devices which have a name and which are connectable if (devices[res.id]["name"] != "" && devices[res.id]["isConnectable"] == "True") { // add new device to list GameObject g = Instantiate(deviceScanResultProto, scanResultRoot); g.name = res.id; g.transform.GetChild(0).GetComponent().text = devices[res.id]["name"]; g.transform.GetChild(1).GetComponent().text = res.id; } } else if (status == BleApi.ScanStatus.FINISHED) { isScanningDevices = false; deviceScanButtonText.text = "扫描设备"; deviceScanStatusText.text = "finished"; } } while (status == BleApi.ScanStatus.AVAILABLE); //isScanningDevices = false; } if (isScanningServices) { BleApi.Service res = new BleApi.Service(); do { status = BleApi.PollService(out res, false); if (status == BleApi.ScanStatus.AVAILABLE) { serviceDropdown.AddOptions(new List { res.uuid }); // first option gets selected if (serviceDropdown.options.Count == 1) SelectService(serviceDropdown.gameObject); } else if (status == BleApi.ScanStatus.FINISHED) { isScanningServices = false; serviceScanButton.interactable = true; serviceScanStatusText.text = "finished"; } } while (status == BleApi.ScanStatus.AVAILABLE); } if (isScanningCharacteristics) { BleApi.Characteristic res = new BleApi.Characteristic(); do { status = BleApi.PollCharacteristic(out res, false); if (status == BleApi.ScanStatus.AVAILABLE) { string name = res.userDescription != "no description available" ? res.userDescription : res.uuid; characteristicNames[name] = res.uuid; characteristicDropdown.AddOptions(new List { name }); // first option gets selected if (characteristicDropdown.options.Count == 1) SelectCharacteristic(characteristicDropdown.gameObject); } else if (status == BleApi.ScanStatus.FINISHED) { isScanningCharacteristics = false; characteristicScanButton.interactable = true; characteristicScanStatusText.text = "finished"; } } while (status == BleApi.ScanStatus.AVAILABLE); } if (isSubscribed) { BleApi.BLEData res = new BleApi.BLEData(); while (BleApi.PollData(out res, false)) { subcribeText.text = BitConverter.ToString(res.buf, 0, res.size); subcribeText.text= Hex2Ten(subcribeText.text); string[] TenArray = subcribeText.text.Split(' '); //manager.currentturnCount = manager.totalturnCount -lastCount ; manager.totalturnCount = int.Parse(TenArray[18]); } } { // log potential errors BleApi.ErrorMessage res = new BleApi.ErrorMessage(); BleApi.GetError(out res); if (lastError != res.msg) { Debug.LogError(res.msg); errorText.text = res.msg; lastError = res.msg; } } //lastCount = manager.totalturnCount; //Debug.Log("lastCount" + lastCount); //Debug.Log("currentturnCount" + manager.currentturnCount); } int lastCount = 0; public static string Hex2Ten(string hex) { string[] array = hex.Split('-'); string str = ""; for (int k = 0; k < array.Length; k++) { int ten= Convert.ToInt32(array[k], 16); str += ten.ToString() + " "; } return str.ToString(); } private void OnApplicationQuit() { BleApi.Quit(); } public void StartStopDeviceScan() { if (!isScanningDevices) { // start new scan for (int i = scanResultRoot.childCount - 1; i >= 0; i--) Destroy(scanResultRoot.GetChild(i).gameObject); BleApi.StartDeviceScan(); isScanningDevices = true; deviceScanButtonText.text = "停止扫描"; deviceScanStatusText.text = "scanning"; } else { // stop scan isScanningDevices = false; BleApi.StopDeviceScan(); deviceScanButtonText.text = "扫描设备"; deviceScanStatusText.text = "stopped"; } } public void SelectDevice(GameObject data) { for (int i = 0; i < scanResultRoot.transform.childCount; i++) { var child = scanResultRoot.transform.GetChild(i).gameObject; child.transform.GetChild(0).GetComponent().color = child == data ? Color.red : deviceScanResultProto.transform.GetChild(0).GetComponent().color; } selectedDeviceId = data.name; serviceScanButton.interactable = true; } public void StartServiceScan() { if (!isScanningServices) { // start new scan serviceDropdown.ClearOptions(); BleApi.ScanServices(selectedDeviceId); isScanningServices = true; serviceScanStatusText.text = "scanning"; serviceScanButton.interactable = false; } } public void SelectService(GameObject data) { selectedServiceId = serviceDropdown.options[serviceDropdown.value].text; characteristicScanButton.interactable = true; } public void StartCharacteristicScan() { if (!isScanningCharacteristics) { // start new scan characteristicDropdown.ClearOptions(); BleApi.ScanCharacteristics(selectedDeviceId, selectedServiceId); isScanningCharacteristics = true; characteristicScanStatusText.text = "scanning"; characteristicScanButton.interactable = false; } } public void SelectCharacteristic(GameObject data) { string name = characteristicDropdown.options[characteristicDropdown.value].text; selectedCharacteristicId = characteristicNames[name]; subscribeButton.interactable = true; writeButton.interactable = true; } public void Subscribe() { // no error code available in non-blocking mode BleApi.SubscribeCharacteristic(selectedDeviceId, selectedServiceId, selectedCharacteristicId, false); isSubscribed = true; } public void Write() { byte[] payload = Encoding.ASCII.GetBytes(writeInput.text); BleApi.BLEData data = new BleApi.BLEData(); data.buf = new byte[512]; data.size = (short)payload.Length; data.deviceId = selectedDeviceId; data.serviceUuid = selectedServiceId; data.characteristicUuid = selectedCharacteristicId; for (int i = 0; i < payload.Length; i++) data.buf[i] = payload[i]; // no error code available in non-blocking mode BleApi.SendData(in data, false); } }中间做了一个取值和进制转换，就可以渠道自己想要的数据了。 https://github.com/adabru/BleWinrtDll 再次感谢大佬，希望有用到的朋友可以给他点个star。 ok，分享就到这了。 下载不了的私信我。 下载地址：BleWinrtDll-main.zip-互联网文档类资源-CSDN下载 |
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