Tools¶
Print UUID and its attributes¶
If we don’t know the UUID of the current BLE device, we can call the function printPossibleBleUUID to print out the optional UUID of the currently connected device
Where Properties is a binary number, and the meaning of each bit is shown in the following table:
| value (in hexadecimal) | mean |
|---|---|
| 0x01 | broadcastable |
| 0x02 | readable |
| 0x04 | can be written without response |
| 0x08 | can be written |
| 0x10 | supports notification |
| 0x20 | supports indication |
| 0x40 | supports write with signature |
| 0x80 | has extended properties |
String2hex¶
/**
* Convert string to hexadecimal
* @param str String to convert
* @return hex array
*/
DataUtil.string2hex("Hello")
Bytes2string¶
/**
* The byte array is converted into a string according to the required encoding format
* @param bytes byte array to convert
* @param charsetName Required encoding format
* @return Converted string
*/
SerialPortTools.bytes2string(bytes, "GBK")
String2bytes¶
/**
* The string is converted into a byte array according to the required encoding format
* @param string String to convert
* @param charsetName Required encoding format
* @return Converted byte array
*/
SerialPortTools.bytes2string("Hello", "GBK")