蓝牙连接以及协议数据解析
来源：互联网 发布：留学低龄化的数据 编辑：程序博客网 时间：2024/05/16 04:48
1.声明属性以及引入相关库
NSMutableArray *pers;//这个必须有，用于记录搜索到的设备，没有导致连接不上
manager = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_main_queue()];
2.代理方法
-(void)centralManagerDidUpdateState:(CBCentralManager *)central{
switch (central.state) {
case CBCentralManagerStateUnknown:
NSLog(@">>>CBCentralManagerStateUnknown");
break;
case CBCentralManagerStateResetting:
NSLog(@">>>CBCentralManagerStateResetting");
break;
case CBCentralManagerStateUnsupported:
NSLog(@">>>CBCentralManagerStateUnsupported");
break;
case CBCentralManagerStateUnauthorized:
NSLog(@">>>CBCentralManagerStateUnauthorized");
break;
case CBCentralManagerStatePoweredOff:
NSLog(@">>>CBCentralManagerStatePoweredOff");
break;
case CBCentralManagerStatePoweredOn:{
NSLog(@">>>CBCentralManagerStatePoweredOn");
//开始扫描周围的外设
/*
第一个参数nil就是扫描周围所有的外设，扫描到外设后会进入
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI;
*/
// NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
[manager scanForPeripheralsWithServices:nil options:nil];
hudView.hidden=NO;
hudView.contentLab.text=@"开始扫描设备";
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
[manager scanForPeripheralsWithServices:nil options:nil];
break;
}
default:
break;
}
}
//扫描到设备会进入方法
-(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI{
NSLog(@"当扫描到设备:%@",peripheral.name);
// [peripherals addObject:peripheral];
// [tableview reloadData];
//接下来可以连接设备
／／ 这个是我的设备名，根据实际情况，修改
if ([peripheral.name hasPrefix:@"ABG"]){
/*
一个主设备最多能连7个外设，每个外设最多只能给一个主设备连接,连接成功，失败，断开会进入各自的委托
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral;//连接外设成功的委托
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error;//外设连接失败的委托
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error;//断开外设的委托
*/
//找到的设备必须持有它，否则CBCentralManager中也不会保存peripheral，那么CBPeripheralDelegate中的方法也不会被调用！！
manager.delegate=self;
[pers addObject:peripheral];
self.per=peripheral;
//连接设备
[manager connectPeripheral:peripheral options:nil];
hudView.hidden=NO;
hudView.contentLab.text=[NSString stringWithFormat:@"扫描到设备%@,并开始连接",peripheral.name];
}
}
//连接到Peripherals-成功
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
NSLog(@">>>连接到名称为（%@）的设备-成功",peripheral.name);
//设置的peripheral委托CBPeripheralDelegate
//@interface ViewController : UIViewController
[peripheral setDelegate:self];
//扫描外设Services，成功后会进入方法：-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
[peripheral discoverServices:nil];
// self.nameLab.text=peripheral.name;
// self.contactStateLab.text=@"链接中";
hudView.hidden=NO;
hudView.contentLab.text=[NSString stringWithFormat:@"链接设备%@成功,",peripheral.name];
}
//连接到Peripherals-失败
-(void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
NSLog(@">>>连接到名称为（%@）的设备-失败,原因:%@",[peripheral name],[error localizedDescription]);
//自定义的mbprogress
hudView.hidden=NO;
hudView.contentLab.text=[NSString stringWithFormat:@"链接设备%@失败,",peripheral.name];
}
//Peripherals断开连接
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
NSLog(@">>>外设连接断开连接 %@: %@\n", [peripheral name], [error localizedDescription]);
// self.contactStateLab.text=@"链接断开";
//这句话确保了能保持连接，断了重新连接
[manager connectPeripheral:peripheral options:nil];
hudView.contentLab.text=[NSString stringWithFormat:@"设备%@链接断开",peripheral.name];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
}
//扫描到Services
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
// NSLog(@">>>扫描到服务：%@",peripheral.services);
if (error)
{
NSLog(@">>>Discovered services for %@ with error: %@", peripheral.name, [error localizedDescription]);
return;
}
for (CBService *service in peripheral.services) {
NSLog(@"%@",service.UUID);
//扫描每个service的Characteristics，扫描到后会进入方法： -(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
/这个1808是我的设备的入口，需根据实际改变
if ([service.UUID.UUIDString isEqualToString:@"1808"]) {
[peripheral discoverCharacteristics:nil forService:service];
}
// if ([service.UUID.UUIDString isEqualToString:@"180A"]) {
// [peripheral discoverCharacteristics:nil forService:service];
// }
// if ([service.UUID.UUIDString isEqualToString:@"180F"]) {
// [peripheral discoverCharacteristics:nil forService:service];
// }
}
}
//扫描到Characteristics
-(void) peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
NSString *name=[NSString stringWithFormat:@"发现特征的服务:%@ (%@)",service.UUID.data ,service.UUID];
NSLog(@"%@",name);
for (CBCharacteristic *c in service.characteristics) {
// [self updateLog:[NSString stringWithFormat:@"特征 UUID: %@ (%@)",c.UUID.data,c.UUID]];
NSLog(@"%@",c.UUID);
// if ([c.UUID isEqual:[CBUUID UUIDWithString:@"FF01"]]) {
//// _writeCharacteristic = c;
// }
//
if ([c.UUID isEqual:[CBUUID UUIDWithString:@"FFF4"]]) {
chara=c;
[peripheral readValueForCharacteristic:c];
[peripheral setNotifyValue:YES forCharacteristic:c];
}
// if ([c.UUID isEqual:[CBUUID UUIDWithString:@"FF04"]]) {
// [peripheral readValueForCharacteristic:c];
// }
//
// if ([c.UUID isEqual:[CBUUID UUIDWithString:@"FF05"]]) {
// [peripheral readValueForCharacteristic:c];
// [peripheral setNotifyValue:YES forCharacteristic:c];
// }
//
// if ([c.UUID isEqual:[CBUUID UUIDWithString:@"FFA1"]]) {
// [peripheral readRSSI];
// }
// [_nCharacteristics addObject:c];
}
}
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
//打印出characteristic的UUID和值
//!注意，value的类型是NSData，具体开发时，会根据外设协议制定的方式去解析数据
//该蓝牙协议是返回数值是ascii码
// NSLog(@"characteristic uuid:%@ value:%@",characteristic.UUID,characteristic.value);
// NSData * data = characteristic.value;
// //将接收到的十六进制数据 转成 十六进制字符串
// Byte *byte = (Byte *)[data bytes];
// // 取出其中用用的两位
// Byte b[] = {byte[1],byte[2]};
// // 在转化成NSData
// NSData *adata = [[NSData alloc] initWithBytes:b length:sizeof(b)];
// NSLog(@"adata = %@", adata);
// // 转化成字符串
// NSString *str = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
// NSLog(@"%@",str);
NSData * data = characteristic.value;
Byte * resultByte = (Byte *)[data bytes];
//
for(int i=0;i<[data length];i++){
printf("testByteFF02[%d] = %d\n",i,resultByte[i]);
// NSString *string = [NSString stringWithFormat:@"%c",resultByte[i]];
// printf("testByteFF02[%d] = %@\n",i,string);
if (resultByte[3]==0x00&&resultByte[4]==0x00&&resultByte[5]==0x00&&resultByte[6]==0x01) {
NSLog(@"停止测试");
hudView.hidden=NO;
hudView.contentLab.text=@"停止测量";
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
}
if (resultByte[7]==0xcf) {
NSLog(@"停止测试");
hudView.hidden=NO;
hudView.contentLab.text=@"停止测量";
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
}
int asc=resultByte[i];
if (asc==0xfe) {
int num;
if (resultByte[2]==0) {
num=resultByte[1];
}else{
num=resultByte[2];
}
NSString *aString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"测量中,当前值：%d",num);
if(num!=254){
hudView.hidden=NO;
hudView.contentLab.text=[NSString stringWithFormat:@"当前测量值%d",num];
}
// self.textview.text=[NSString stringWithFormat:@"测量中,当前值：%d",num];
}
if (asc==0xfd) {
// Byte byte1=resultByte[2];
// int num1=[self hBytesToInt:];
[manager cancelPeripheralConnection:peripheral];
UInt16 asc1=resultByte[3];
UInt16 asc2=resultByte[4];
NSString *str= [NSString stringWithFormat:@"%c%c",asc2,asc1];
NSString *num= [NSString stringWithFormat:@"%ld",strtoul([str UTF8String],0,16)];
// NSLog(@"测量结束,收缩压%@",str);
NSLog(@"测量结束,收缩压%@",num);
UInt16 asc3=resultByte[5];
UInt16 asc4=resultByte[6];
NSString *str2= [NSString stringWithFormat:@"%c%c",asc4,asc3];
NSString *num2= [NSString stringWithFormat:@"%ld",strtoul([str2 UTF8String],0,16)];
// NSLog(@"测量结束,收缩压%@",str);
NSLog(@"测量结束,舒张压%@",num2);
UInt16 asc5=resultByte[7];
UInt16 asc6=resultByte[8];
NSString *str3= [NSString stringWithFormat:@"%c%c",asc6,asc5];
NSString *num3= [NSString stringWithFormat:@"%ld",strtoul([str3 UTF8String],0,16)];
// NSLog(@"测量结束,收缩压%@",str);
if ([num isEqualToString:@"0"]||[num2 isEqualToString:@"0"]||[num3 isEqualToString:@"0"]) {
hudView.hidden=NO;
hudView.contentLab.text=@"测量异常";
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
return;
}
if ([num isEqualToString:hasGaoya]&&[num2 isEqualToString:hasDiya]&&[num3 isEqualToString:hasXinglu]) {
return;
}else{
hasGaoya=num;
hasDiya=num2;
hasXinglu=num3;
hudView.hidden=NO;
hudView.contentLab.text=[NSString stringWithFormat:@"测量结束,高压：%@;低压：%@,心率：%@",num,num2,num3];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
hudView.hidden=YES;
});
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
HomeBloodSCell *bloodScell=[mytab cellForRowAtIndexPath:indexPath];
bloodScell.gaoyaLab.text=num;
bloodScell.diyaLab.text=num2;
bloodScell.xingluLab.text=num3;
NSLog(@"测量结束,心率%@",num3);
SelfDataModel *selfdata=[SelfDataModel returnModelBySelectFMDB];
NSDate *date=[NSDate date];
NSDateFormatter *form=[[NSDateFormatter alloc]init];
[form setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
NSString *datestr=[form stringFromDate:date ];
NSString *url=[[HJInterfaceManager sharedInstance]uploadXueya];
NSMutableDictionary *mdic=[[NSMutableDictionary alloc]init];
mdic[@"userId"]=selfdata.idNum;
mdic[@"dbp"]=num2;
mdic[@"sbp"]=num;
mdic[@"pulse"]=num3;
mdic[@"measureTime"]=datestr;
[HJHttpManager PostRequestWithUrl:url param:mdic finish:^(NSData *data) {
NSDictionary *dic=(NSDictionary *)data;
if([dic[@"status"] isEqualToString:@"S"]){
[MBProgressHUD showSuccess:@"数据上传成功"];
HomeBloodSCell *cell=[mytab cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
NSString *str=dic[@"value"][@"measurements"];
cell.statusLab.text=str;
if ([str isEqualToString:@"偏低"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"2aa764"];
// self.pointImage.transform=CGAffineTransformMakeRotation(M_PI/6);
}
if ([str isEqualToString:@"理想"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"62c342"];
cell.statusImage.transform=CGAffineTransformMakeRotation(M_PI/2-M_PI/6);
}
if ([str isEqualToString:@"正常"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"c9e93c"];
cell.statusImage.transform=CGAffineTransformMakeRotation(M_PI/6*5-M_PI/6);
}
if ([str isEqualToString:@"轻度"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"ffc102"];
cell.statusImage.transform=CGAffineTransformMakeRotation(M_PI/6*7-M_PI/6);
}
if ([str isEqualToString:@"中度"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"f78758"];
cell.statusImage.transform=CGAffineTransformMakeRotation(M_PI/2*3-M_PI/6);
}
if ([str isEqualToString:@"偏高"]) {
cell.statusLab.textColor=[UIColor colorWithHexString:@"e74c3c"];
cell.statusImage.transform=CGAffineTransformMakeRotation(M_PI/6*11-M_PI/6);
}
}else{
[MBProgressHUD showError:dic[@"message"]];
}
CDLog(@"请求成功");
} failed:^(NSError *error) {
[MBProgressHUD showError:@"请求失败"];
}];
}
// self.textview.text=[NSString stringWithFormat:@"测量结束,收缩压%@\n\n测量结束,舒张压%@\n\n测量结束,心率%@",num,num2,num3];
}
}
// NSString *productNumber = [reciveString substringWithRange:NSMakeRange(7, 17)];
// [productDefault setObject:productNumber forKey:@"productNumber"];
// [productDefault synchronize];
}
//中心读取外设实时数据
- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
if (error) {
NSLog(@"Error changing notification state: %@", error.localizedDescription);
}
// Notification has started
if (characteristic.isNotifying) {
NSString *reciveString = [NSString stringWithFormat:@"%@", [self hexadecimalString:characteristic.value]];
NSUserDefaults *productDefault = [NSUserDefaults standardUserDefaults];
// NSString *productNumber = [reciveString substringWithRange:NSMakeRange(7, 17)];
[peripheral readValueForCharacteristic:characteristic];
} else { // Notification has stopped
// so disconnect from the peripheral
NSLog(@"Notification stopped on %@. Disconnecting", characteristic);
// [self updateLog:[NSString stringWithFormat:@"Notification stopped on %@. Disconnecting", characteristic]];
[manager cancelPeripheralConnection:peripheral];
}
}
//搜索到Characteristic的Descriptors
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
//打印出Characteristic和他的Descriptors
NSLog(@"characteristic uuid:%@",characteristic.UUID);
for (CBDescriptor *d in characteristic.descriptors) {
NSLog(@"Descriptor uuid:%@",d.UUID);
}
}
//获取到Descriptors的值
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForDescriptor:(CBDescriptor *)descriptor error:(NSError *)error{
//打印出DescriptorsUUID 和value
//这个descriptor都是对于characteristic的描述，一般都是字符串，所以这里我们转换成字符串去解析
NSLog(@"characteristic uuid:%@ value:%@",[NSString stringWithFormat:@"%@",descriptor.UUID],descriptor.value);
}
#pragma mark 写数据后回调
- (void)peripheral:(CBPeripheral *)peripheral
didWriteValueForCharacteristic:(CBCharacteristic *)characteristic
error:(NSError *)error {
if (error) {
NSLog(@"Error writing characteristic value: %@",
[error localizedDescription]);
return;
}
NSLog(@"写入%@成功",characteristic);
[peripheral readValueForCharacteristic:characteristic];
}
//向设备写入数据让其停止
-(IBAction)stopBtnDown:(id)sender{
// char byte[] = {0xFD,0xFD,0xFB,0xFB,0x05,0x0C,0x0D,0x0A};
Byte byte[] = {0XFD,0XFD,0XFB,0XFB,0X05,0X0C,0X0D,0X0A};
NSData * data = [NSData dataWithBytes:byte length:8];
[self.per writeValue:data forCharacteristic:chara type:CBCharacteristicWriteWithResponse];
// NSString *str=@"[0xFD,0xFD,0xFB,0xFB,0x05,0x0C,0x0D,0x0A]";
// NSData *data=[str dataUsingEncoding:NSUTF8StringEncoding];
// [self.per writeValue:data forCharacteristic:chara type:CBCharacteristicWriteWithResponse];
}
-(IBAction)showList:(id)sender{
Byte byte[] = {0xFD,0xFD,0x07,0x07,0x07,0x07,0x0D,0x0A};
NSData * data = [NSData dataWithBytes:byte length:8];
[self.per writeValue:data forCharacteristic:chara type:CBCharacteristicWriteWithResponse];
}
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