Ios 如何使用蓝牙LE（BLE迷你模块）在OSX上读取Arduino浮点值

红熊实验室BLE迷你模块（）的SimpleControl示例可将模拟读数（如温度传感器）从Arduino发送到iOS/OSX，并带有以下Arduino代码：

uint16_t value = analogRead(ANALOG_IN_PIN)
BLEMini_write(0x0B);
BLEMini_write(value >> 8);
BLEMini_write(value);

但是，我尝试将原始模拟读数（例如162）转换为实际温度读数（例如摄氏度/27.15），并将转换传输到iOS/OSX，但在OSX上我只读取奇怪的值（例如13414）。我使用的Arduino代码如下：

  int reading = analogRead(ANALOG_IN_PIN);
  float voltage = reading * 5.0;
  float temp = (voltage - 0.5) * 100;
  int tempINT = temp;
  uint16_t value = tempINT;
  BLEMini_write(0x0B);
  BLEMini_write(value >> 8);
  BLEMini_write(value);

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

    // parse data, all commands are in 3-byte
        for (int i = 0; i < length; i+=3)
    {
       NSLog(@"0x%02X, 0x%02X, 0x%02X", data[i], data[i+1], data[i+2]);

        if (data[i] == 0x0A) // Digital In data
        {
            if (data[i+1] == 0x01)
                lblDigitalIn.stringValue = @"HIGH";
            else
                lblDigitalIn.stringValue = @"LOW";
        }
        else if (data[i] == 0x0B) // Analog In data
        {
            UInt16 Value;

            Value = data[i+2] | data[i+1] << 8;
            lblAnalogIn.stringValue = [NSString stringWithFormat:@"%d", Value];
        }
    }
}

OSX应用程序的代码部分如下所示：

  int reading = analogRead(ANALOG_IN_PIN);
  float voltage = reading * 5.0;
  float temp = (voltage - 0.5) * 100;
  int tempINT = temp;
  uint16_t value = tempINT;
  BLEMini_write(0x0B);
  BLEMini_write(value >> 8);
  BLEMini_write(value);

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

    // parse data, all commands are in 3-byte
        for (int i = 0; i < length; i+=3)
    {
       NSLog(@"0x%02X, 0x%02X, 0x%02X", data[i], data[i+1], data[i+2]);

        if (data[i] == 0x0A) // Digital In data
        {
            if (data[i+1] == 0x01)
                lblDigitalIn.stringValue = @"HIGH";
            else
                lblDigitalIn.stringValue = @"LOW";
        }
        else if (data[i] == 0x0B) // Analog In data
        {
            UInt16 Value;

            Value = data[i+2] | data[i+1] << 8;
            lblAnalogIn.stringValue = [NSString stringWithFormat:@"%d", Value];
        }
    }
}

-（void）bledireceivedata:（unsigned char*）数据长度：（int）长度
{
NSLog（@“长度：%d”，长度）；
//解析数据时，所有命令均为3字节
对于（int i=0；iValue=data[i+2]| data[i+1]所有特征数据都是字节。一旦特征数据被读取，则由中央应用程序将数据转换为适当的格式（如外设制造商所述，或某些特征还包含格式描述符，该描述符将描述数据的格式）