Android Question Send HEX byte via bluetooth

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StarinschiAndrei

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Hi all,
Could anybody help me what's wrong in my code ! i try to communicate with a device via Bluetooth based on the following description (attached):

i use as a reference , Erel's Bluetooth app example.
B4X: 
Public Sub SendMessage (msg As String)
    AStream.Write(Array As Byte(0x01, 0x25, 0xF8, 0x45, 0x30, 0x05, 0x30, Asc(0x31), Asc(0x39), Asc(0x37), 0x03 ))
   
End Sub
 
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StarinschiAndrei

Active Member
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Longtime User
Erel said:
The usage of Asc here looks wrong. Asc expects a single character and returns its unicode point value (same as ASCII).
Click to expand...
Thank you. Could you please tell how should i send the command ?I send the command with the application (under windows) provided by manufacturer. I monitored the port (serial port monitor) and this was the sent command : 01 25 F8 45 30 05 30 31 39 37 03
 
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StarinschiAndrei

Active Member
Licensed User
Longtime User
Hi,
Is there any function that can convert hex 15e in 30 31 35 3E ?
I tried to use
B4X: 
dim val as string     '15e
Log(bc.HexFromBytes (bc.StringToBytes(val,"UTF8")))
but the result is : 313565
 
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