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社区首页 >问答首页 >9 9dof剃须刀和BLE迷你

问9 9dof剃须刀和BLE迷你
EN

Stack Overflow用户
提问于 2014-07-16 18:37:39
回答 1查看 295关注 0票数 1

我试图通过BLE (红熊实验室)从9 9dof IMU模块(从Sparkfun)传输数据到BLEChat_Central_OSX应用程序，但它不起作用:/

我使用的代码是：

我尝试使用以下代码通过BLE传输一个值：

代码语言：javascript
复制
     Serial.print(int(smoothedAX));

     Serial.println();

但是，当在Xcode上运行BLEChat时，我只收到"i“和"Y”值：

代码语言：javascript
复制
2014-07-16 18:27:01.389 BLEChat Central[395:303] scanForPeripheralsWithServices

2014-07-16 18:27:02.108 BLEChat Central[395:303] didDiscoverPeripheral

2014-07-16 18:27:02.426 BLEChat Central[395:303] Duplicate UUID found updating...

2014-07-16 18:27:03.389 BLEChat Central[395:303] Stopped Scanning

2014-07-16 18:27:03.389 BLEChat Central[395:303] Known peripherals : 1

2014-07-16 18:27:03.389 BLEChat Central[395:303] List of currently known peripherals :

2014-07-16 18:27:03.390 BLEChat Central[395:303] 0  |  308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:27:03.390 BLEChat Central[395:303]
------------------------------------

2014-07-16 18:27:03.390 BLEChat Central[395:303] Peripheral Info :

2014-07-16 18:27:03.390 BLEChat Central[395:303] UUID : 308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:27:03.390 BLEChat Central[395:303] Name : Biscuit

2014-07-16 18:27:03.391 BLEChat Central[395:303]
-------------------------------------

2014-07-16 18:27:03.391 BLEChat Central[395:303] Connecting to peripheral with UUID : 308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:27:03.567 BLEChat Central[395:303] Connected to 308B4C0E-F756-434C-84D4-B474B1C12AD6 successful

2014-07-16 18:27:03.582 BLEChat Central[395:303] ->Connected

2014-07-16 18:27:03.747 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.747 BLEChat Central[395:303] y

2014-07-16 18:27:03.749 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.749 BLEChat Central[395:303] y

2014-07-16 18:27:03.750 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.750 BLEChat Central[395:303] i

2014-07-16 18:27:03.814 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.814 BLEChat Central[395:303] i

2014-07-16 18:27:03.816 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.816 BLEChat Central[395:303] i

2014-07-16 18:27:03.817 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.817 BLEChat Central[395:303] i

2014-07-16 18:27:03.818 BLEChat Central[395:303] Length: 2

2014-07-16 18:27:03.818 BLEChat Central[395:303] i

我还试图通过修改arduino代码来传输数据：

代码语言：javascript
复制
     // uint16_t value = smoothedAX;

     uint16_t value = 123; // fake reading

     BLEMini_write(0x0B);

     BLEMini_write(value >> 8);

     BLEMini_write(value);

但是，我立即收到一条错误消息：

代码语言：javascript
复制
2014-07-16 18:28:04.930 BLEChat Central[425:303] scanForPeripheralsWithServices

2014-07-16 18:28:04.964 BLEChat Central[425:303] didDiscoverPeripheral

2014-07-16 18:28:04.964 BLEChat Central[425:303] Duplicate UUID found updating...

2014-07-16 18:28:06.932 BLEChat Central[425:303] Stopped Scanning

2014-07-16 18:28:06.932 BLEChat Central[425:303] Known peripherals : 1

2014-07-16 18:28:06.932 BLEChat Central[425:303] List of currently known peripherals :

2014-07-16 18:28:06.932 BLEChat Central[425:303] 0  |  308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:28:06.932 BLEChat Central[425:303] ------------------------------------

2014-07-16 18:28:06.933 BLEChat Central[425:303] Peripheral Info :

2014-07-16 18:28:06.933 BLEChat Central[425:303] UUID : 308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:28:06.933 BLEChat Central[425:303] Name : Biscuit

2014-07-16 18:28:06.933 BLEChat Central[425:303] -------------------------------------

2014-07-16 18:28:06.933 BLEChat Central[425:303] Connecting to peripheral with UUID : 308B4C0E-F756-434C-84D4-B474B1C12AD6

2014-07-16 18:28:06.975 BLEChat Central[425:303] Connected to 308B4C0E-F756-434C-84D4-B474B1C12AD6 successful

2014-07-16 18:28:06.991 BLEChat Central[425:303] ->Connected

2014-07-16 18:28:07.131 BLEChat Central[425:303] Length: 2

2014-07-16 18:28:07.132 BLEChat Central[425:303] (null)

2014-07-16 18:28:07.133 BLEChat Central[425:303] An uncaught exception was raised

2014-07-16 18:28:07.134 BLEChat Central[425:303] -[__NSCFString appendString:]: nil argument

2014-07-16 18:28:07.134 BLEChat Central[425:303] (

0   CoreFoundation                      0x00007fff82e5725c __exceptionPreprocess + 172

1   libobjc.A.dylib                     0x00007fff88243e75 objc_exception_throw + 43

2   CoreFoundation                      0x00007fff82e5710c +[NSException raise:format:] + 204

3   CoreFoundation                      0x00007fff82e26def mutateError + 159

4   BLEChat Central                     0x00000001000054d1 -[RBLAppDelegate bleDidReceiveData:length:] + 257

5   BLEChat Central                     0x0000000100004cb2 -[BLE peripheral:didUpdateValueForCharacteristic:error:] + 770

6   CoreBluetooth                       0x00007fff884b4089 -[CBCentralManager xpcConnection:didReceiveMsg:args:] + 101

7   CoreBluetooth                       0x00007fff884bd88b __34-[CBXpcConnection handleMsg:args:]_block_invoke + 81

8   libdispatch.dylib                   0x00007fff884c81bb _dispatch_call_block_and_release + 12

9   libdispatch.dylib                   0x00007fff884c528d _dispatch_client_callout + 8

10  libdispatch.dylib                   0x00007fff884ccef0 _dispatch_main_queue_callback_4CF + 333

11  CoreFoundation                      0x00007fff82dbe4f9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9

12  CoreFoundation                      0x00007fff82d79714 __CFRunLoopRun + 1636

13  CoreFoundation                      0x00007fff82d78e75 CFRunLoopRunSpecific + 309

14  HIToolbox                           0x00007fff877cea0d RunCurrentEventLoopInMode + 226

15  HIToolbox                           0x00007fff877ce7b7 ReceiveNextEventCommon + 479

16  HIToolbox                           0x00007fff877ce5bc _BlockUntilNextEventMatchingListInModeWithFilter + 65

17  AppKit                              0x00007fff833f624e _DPSNextEvent + 1434

18  AppKit                              0x00007fff833f589b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122

19  AppKit                              0x00007fff833e999c -[NSApplication run] + 553

20  AppKit                              0x00007fff833d4783 NSApplicationMain + 940

21  BLEChat Central                     0x0000000100005122 main + 34

22  libdyld.dylib                       0x00007fff87eea5fd start + 1

)

2014-07-16 18:28:07.135 BLEChat Central[425:303] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString appendString:]: nil argument'

*** First throw call stack:

(

0   CoreFoundation                      0x00007fff82e5725c __exceptionPreprocess + 172

1   libobjc.A.dylib                     0x00007fff88243e75 objc_exception_throw + 43

2   CoreFoundation                      0x00007fff82e5710c +[NSException raise:format:] + 204

3   CoreFoundation                      0x00007fff82e26def mutateError + 159

4   BLEChat Central                     0x00000001000054d1 -[RBLAppDelegate bleDidReceiveData:length:] + 257

5   BLEChat Central                     0x0000000100004cb2 -[BLE peripheral:didUpdateValueForCharacteristic:error:] + 770

6   CoreBluetooth                       0x00007fff884b4089 -[CBCentralManager xpcConnection:didReceiveMsg:args:] + 101

7   CoreBluetooth                       0x00007fff884bd88b __34-[CBXpcConnection handleMsg:args:]_block_invoke + 81

8   libdispatch.dylib                   0x00007fff884c81bb _dispatch_call_block_and_release + 12

9   libdispatch.dylib                   0x00007fff884c528d _dispatch_client_callout + 8

10  libdispatch.dylib                   0x00007fff884ccef0 _dispatch_main_queue_callback_4CF + 333

11  CoreFoundation                      0x00007fff82dbe4f9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9

12  CoreFoundation                      0x00007fff82d79714 __CFRunLoopRun + 1636

13  CoreFoundation                      0x00007fff82d78e75 CFRunLoopRunSpecific + 309

14  HIToolbox                           0x00007fff877cea0d RunCurrentEventLoopInMode + 226

15  HIToolbox                           0x00007fff877ce7b7 ReceiveNextEventCommon + 479

16  HIToolbox                           0x00007fff877ce5bc _BlockUntilNextEventMatchingListInModeWithFilter + 65

17  AppKit                              0x00007fff833f624e _DPSNextEvent + 1434

18  AppKit                              0x00007fff833f589b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122

19  AppKit                              0x00007fff833e999c -[NSApplication run] + 553

20  AppKit                              0x00007fff833d4783 NSApplicationMain + 940

21  BLEChat Central                     0x0000000100005122 main + 34

22  libdyld.dylib                       0x00007fff87eea5fd start + 1

)

libc++abi.dylib: terminating with uncaught exception of type NSException

根据Xcode-Debugger，bug应该在以下两种方法中：

代码语言：javascript
复制
-(void) bleDidReceiveData:(unsigned char *)data length:(int)length
{
    NSLog(@"Length: %d", length);

    data[length] = 0;
    NSString *str = [NSString stringWithCString:data encoding:NSUTF8StringEncoding];



    NSLog(@"%@", str);

    static NSMutableString *message;

    if (message == nil)
        message = [[NSMutableString alloc] initWithString:@""];

    [message appendString:str];
    [message appendString:@"\n"];

    self.textView.string = message;
    [self.textView scrollRangeToVisible: NSMakeRange(self.textView.string.length, 0)];
}

和

代码语言：javascript
复制
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
    unsigned char data[20];

    static unsigned char buf[512];
    static int len = 0;
    NSInteger data_len;

    if (!error)
    {
        if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@RBL_CHAR_TX_UUID]])
        {
            data_len = characteristic.value.length;
            [characteristic.value getBytes:data length:data_len];

            if (data_len == 20)
            {
                memcpy(&buf[len], data, 20);
                len += data_len;

                if (len >= 64)
                {
                    [[self delegate] bleDidReceiveData:buf length:len];
                    len = 0;
                }
            }
            else if (data_len < 20)
            {
                memcpy(&buf[len], data, data_len);
                len += data_len;

                [[self delegate] bleDidReceiveData:buf length:len];
                len = 0;
            }
        }
    }
    else
    {
        NSLog(@"updateValueForCharacteristic failed!");
    }
}

可能是在OSX应用程序中添加以下代码的解决方案吗？如果是的话，我要把它放在哪里呢？

代码语言：javascript
复制
UInt16 value;
UInt16 pin;

for (int i = 0; i < length; i+=3) {
  pin = data[i];
  value = data[i+2] | data[i+1] << 8;
  NSLog(@"Pin: %d", pin);
  NSLog(@"Value %d",value);
}

三天来，我一直在寻找解决办法，但一直未能解决这个问题。如果你能帮我，那就太好了:)

提前谢谢大家，干杯！

ios
arduino
bluetooth-lowenergy
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2014-07-18 00:13:22

如果您只发送两个字节，那么最简单的方法是-

代码语言：javascript
复制
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
    int smoothedAX;

    if (!error)
    {
        if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@RBL_CHAR_TX_UUID]])
        {
            if (characteristic.value.length == 2) {
               const char *data=[characteristic.value bytes];
               smoothedAX=data[0] <<8 | data[1];
            }
            else {
               NSLog(@"Received %ld bytes",characteristic.value.length);
            }
        }
    }
    else
    {
        NSLog(@"updateValueForCharacteristic failed!");
    }
}

您将需要使用smoothedAX执行一些有用的操作--可能将其传递给另一个方法。

票数 1
EN
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/24788236

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