如何使用激发从(Contec)脉冲氧饱和度计中读取和解析数据？
如何使用激发从(Contec)脉冲氧饱和度计中读取和解析数据？
提问于 2015-08-31 10:01:56
我想开发一个移动应用程序，通过蓝牙连接读取和解析来自Contec脉冲氧表的测量数据，我可以使用evothing(或phonegap)连接、发现和读取静态数据(设备名称、地址.)，但我无法读取测量结果。我应该使用什么服务和特色？我应该写描述符来得到测量结果吗？
发现的结果是：
[
{
"type":0,"uuid":"00001800-0000-1000-8000-00805f9b34fb",
"handle":1,
"characteristics":[
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a00-0000-1000-8000-00805f9b34fb",
"handle":4,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a01-0000-1000-8000-00805f9b34fb",
"handle":5,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a04-0000-1000-8000-00805f9b34fb",
"handle":6,
"descriptors":[]
}
]
},
{
"type":0,"uuid":"0000180a-0000-1000-8000-00805f9b34fb",
"handle":2,
"characteristics":[
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a29-0000-1000-8000-00805f9b34fb",
"handle":7,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a24-0000-1000-8000-00805f9b34fb",
"handle":8,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a25-0000-1000-8000-00805f9b34fb",
"handle":9,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a27-0000-1000-8000-00805f9b34fb",
"handle":10,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a26-0000-1000-8000-00805f9b34fb",
"handle":11,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a28-0000-1000-8000-00805f9b34fb",
"handle":12,"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a23-0000-1000-8000-00805f9b34fb",
"handle":13,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":2,
"uuid":"00002a2a-0000-1000-8000-00805f9b34fb",
"handle":14,
"descriptors":[]
}
]
},
{
"type":0,
"uuid":"49535343-fe7d-4ae5-8fa9-9fafd205e455",
"handle":3,
"characteristics":[
{
"permissions":0,
"writeType":2,
"properties":10,
"uuid":"49535343-6daa-4d02-abf6-19569aca69fe",
"handle":15,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":24,
"uuid":"49535343-aca3-481c-91ec-d85e28a60318",
"handle":16,
"descriptors":[
{
"permissions":0,
"uuid":"00002902-0000-1000-8000-00805f9b34fb",
"handle":20
}
]
},
{
"permissions":0,
"writeType":1,
"properties":30,
"uuid":"49535343-1e4d-4bd9-ba61-23c647249616",
"handle":17,
"descriptors":[
{
"permissions":0,
"uuid":"00002902-0000-1000-8000-00805f9b34fb",
"handle":21
}
]
},
{
"permissions":0,
"writeType":1,
"properties":12,
"uuid":"49535343-8841-43f4-a8d4-ecbe34729bb3",
"handle":18,
"descriptors":[]
},
{
"permissions":0,
"writeType":2,
"properties":24,
"uuid":"49535343-026e-3a9b-954c-97daef17e26e",
"handle":19,
"descriptors":[
{
"permissions":0,
"uuid":"00002902-0000-1000-8000-00805f9b34fb",
"handle":22
}
]
}
]
}
]Phonegap (BLE插件)
{
"address":"8C:DE:52:80:B5:24",
"status":"discovered",
"services":[
{"characteristics":
[
{"descriptors":[],"characteristicUuid":"2a00","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a01","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a04","properties":{"read":true}}
],
"serviceUuid":"1800"
},
{"characteristics":
[
{"descriptors":[],"characteristicUuid":"2a29","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a24","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a25","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a27","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a26","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a28","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a23","properties":{"read":true}},
{"descriptors":[],"characteristicUuid":"2a2a","properties":{"read":true}}
],
"serviceUuid":"180a"
},
{"characteristics":
[
{
"descriptors":[],
"characteristicUuid":"49535343-6daa-4d02-abf6-19569aca69fe",
"properties":{"write":true,"read":true}
},
{
"descriptors":[{"descriptorUuid":"2902"}],
"characteristicUuid":"49535343-aca3-481c-91ec-d85e28a60318",
"properties":{"write":true,"notify":true}
},
{
"descriptors":[{"descriptorUuid":"2902"}],
"characteristicUuid":"49535343-1e4d-4bd9-ba61-23c647249616",
"properties":{"write":true,"writeWithoutResponse":true,"read":true,"notify":true}
},
{
"descriptors":[],
"characteristicUuid":"49535343-8841-43f4-a8d4-ecbe34729bb3",
"properties":{"write":true,"writeWithoutResponse":true}
},
{
"descriptors":[{"descriptorUuid":"2902"}],
"characteristicUuid":"49535343-026e-3a9b-954c-97daef17e26e",
"properties":{"write":true,"notify":true}
}
],
"serviceUuid":"49535343-fe7d-4ae5-8fa9-9fafd205e455"
}
],
"name":"SpO2081127"
}我的JS代码
// JavaScript code for the BLE Discovery example app.
// TODO: Add comments to functions, shorten long lines.
$(document).ready( function()
{
});
/** BLE plugin, is loaded asynchronously so the
variable is redefined in the onDeviceReady handler. */
var ble = null;
// Application object.
var app = {};
// BLE device scanning will be made with this interval in milliseconds.
app.scanInterval = 5000;
// Track whether scanning is ongoing to avoid multiple intervals.
app.isScanning = false;
// Time for last scan event. This is useful for
// when the device does not support continuous scan.
app.lastScanEvent = 0;
// Application Constructor
app.initialize = function()
{
this.bindEvents();
};
// Bind Event Listeners
//
// Bind any events that are required on startup. Common events are:
// 'load', 'deviceready', 'offline', and 'online'.
app.bindEvents = function()
{
document.addEventListener('deviceready', this.onDeviceReady, false);
};
// deviceready Event Handler
//
// The scope of 'this' is the event. In order to call the 'receivedEvent'
// function, we must explicity call 'app.receivedEvent(...);'
app.onDeviceReady = function()
{
// The plugin was loaded asynchronously and can here be referenced.
ble = evothings.ble;
app.receivedEvent('deviceready');
};
app.receivedEvent = function(id)
{
console.log('Received Event: ' + id);
};
app.scan = function(){
ble.stopScan();
$('#result').html('<span class="message">BLE device is scanning...</span>');
ble.startScan(function(r){
//$('#result').html('<span class="success">'+JSON.stringify(r)+'</span>');
$('#result').html('<div class="device"><span class="message">'+r.name+'</span> [<span class="address">'+r.address+'</span>] <span class="success">'+r.rssi+'</span></div>');
$('#result').append('<span class="message">Connecting...</span>');
app.connect(r.address);
}, function(){
$('#result').html('<span class="error">BLE device scanning failed.</span>');
});
}
app.connect = function(address) {
ble.stopScan();
//$('#result').append('<span class="success">'+address+'</span>');
ble.connect(address, function(r){
// state=2 deviceHandle=1
$('#result').html('<span class="success">Successfully connected<br>'+JSON.stringify(r)+'</span>');
app.services(r.deviceHandle);
}, function(errorCode){
$('#result').html('<span class="error">Connection failed ['+errorCode+'].</span>');
});
};
app.services = function(deviceHandle){
ble.readAllServiceData(deviceHandle, function(services){
//$('#result').html('<span class="success">'+JSON.stringify(services)+'</span>');
app.read(deviceHandle);
}, function(errorCode){
$('#result').html('<span class="error">Read services failed ['+errorCode+'].</span>');
});
}
app.read = function(deviceHandle){
/*
ble.readCharacteristic(deviceHandle, 15, function(data){
$('#result').html('<span class="success">['+ble.fromUtf8(data)+']</span>');
}, function(errorCode){
$('#result').html('<span class="error">Read failed ['+errorCode+'].</span>');
});
*/
ble.enableNotification(deviceHandle, 19, function(data){
$('#result').html('<span class="success">['+ble.fromUtf8(data)+']<br>'+data+'</span>');
}, function(errorCode){
$('#result').html('<span class="error">Enable notification failed ['+errorCode+'].</span>');
});
ble.descriptors(deviceHandle,19, function(descriptors){
$('#result').html('<span class="success">['+descriptors[0].handle+']</span>');
ble.writeDescriptor(deviceHandle, descriptors[0].handle, new Uint8Array([1,0]), function(){
$('#result').html('<span class="message">Write success.</span>');
}, function(errorCode){
$('#result').html('<span class="error">Write failed ['+errorCode+'].</span>');
});
setTimeout(function(){
ble.readDescriptor(deviceHandle, descriptors[0].handle, function(data){
$('#result').html('<span class="success">['+ble.fromUtf8(data)+']<br>'+data+'</span>');
}, function(errorCode){
$('#result').html('<span class="error">Read descriptor failed ['+errorCode+'].</span>');
})
}, 10000);
}, function(errorCode){
$('#result').html('<span class="error">Characteristics failed ['+errorCode+'].</span>');
});
}
$(document).on('click','#scan',app.scan);回答 4
Stack Overflow用户
回答已采纳
发布于 2017-12-11 19:15:25
Contec测氧仪确实使用ISSC透明业务。也就是说，服务并不是真正的特定于氧计，它只是一个服务‘透明’暴露串行连接通过蓝牙乐。
您只需要使用两个特性: TX和RX特性：
TX: 49535343-1E4D-4BD9-BA61-23C647249616
RX: 49535343-8841-43F4-A8D4-ECBE34729B3
您需要做的是：
- 对TX特性打开通知
- 将命令写入RX特性(WriteWithResponse)
- 您将收到有关TX特性的数据。
例如，要打开实时数据流：
- 将以下9个字节写入RX特性：{0x7D、0x81、0xA1、0x80、0x80、0x80、0x80、0x80、0x80}。所有命令都是9个字节。
- 你将开始接收60赫兹的TX特性数据。
有关如何解析数据的更多命令和信息，请参见阿尔伯特·布劳恩( Albert )为CMS50FW设计的Github项目。该项目还包含一个PDF文件和协议的文档。
Stack Overflow用户
发布于 2015-09-02 12:39:10
您不能像调用characteristic.handles和ble.descriptors时在app.read函数中所做的那样，硬编码ble.enableNotification。这些值可能会在程序运行期间发生变化，甚至更有可能在不同平台之间发生变化。
相反，您必须在ble.readAllServiceData回调中迭代服务及其特性，使用所需的UUID查找特性，保存它的句柄(通常在app.member中)，并在app.read中使用它。
为了简化BLE编程中的这个(相当常见的)任务，我们在BLE插件之上构建了一个名为"平顺“的库。你想用就用吧。
Stack Overflow用户
发布于 2015-09-04 10:15:19
我可以在链接的示例中发现的唯一明显错误是，您没有检查描述符的UUID (这很糟糕，因为除了"2902“描述符之外还有其他描述符)，但是如果您之前发布的发现结果保持不变，那么这不应该阻止这个特定程序的工作。
我现在还记得，有些设备要求您将某些值写入特定的特性，以便启动将导致通知的度量。例如，德州仪器公司的SensorTag (链接)。
在你的服务UUID上的Google搜索表明它被称为"ISSC专有服务"，并且看起来像是某种串行的数据链接。不幸的是，我找不到任何英文文件。
如果该服务用于运行心率监视器，那么我怀疑您的问题会变得更加复杂。
在这一点上，我记得我是愚蠢的，没有查询你正在使用的设备的名称。最初建造的Contec脉冲氧表似乎使用了一个相当复杂的串行协议，用于RS232或USB连接。这就解释了ISSC的串行服务。不幸的是，它对我们帮助不大，因为我们仍然不知道该服务是如何工作的。
我也无法在互联网上找到任何使用BLE的Contec设备。您有描述设备通信协议的用户手册或文档吗？
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/32308663
复制相关文章
相似问题
腾讯云开发者
Copyright © 2013 - 2026 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有
深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 
粤公网安备44030502008569号
腾讯云计算（北京）有限责任公司 京ICP证150476号 | 京ICP备11018762号