Sending Hexadecimal Numbers with Bluetooth

[pavankumar kavvuri]

All my effort since the last 5 hours is to communicate the TV with an android phone. I need to send a decimal or hexadecimal value from the android phone. It can be like 16203967 or F740BF. I got all the appinventor code ready for me in and I am skeptic about the point that whether F740BF a 3 bit number,is received as 3-bit once or 1-bit thrice.

But my receiver needs it to be as straight F740BF. Anyhow it didn't work for me!!.

I expect good suggestions from you.

Thankyou and Thanks in adavance!!!

          PavanKumarK

[Abraham Getzler]

You need to turn 6 hex digits into 3 bytes of text,

then transmit the 3 bytes of text using the Bluetooth Send Text block.

Add a Web component to your project ion the designer,

to make the necessary conversion block available.

Replicate the attached value procedure BOM, but replace the FEFF with

your 6 letter hex sequence.  The value of the new procedure will be 

your desired 3 byte string, ready to be sent vie the SendText block.

Be sure not to mess up the special punctuation in front and back.

ABG

[Abraham Getzler]

I generalized the procedure to take a hex string and 

squeeze it down half its size into an encoded (decoded?) text string.

See my hexify() procedure and its sample call, attached.

The second parameter has to be a Web component.

I made it a parameter, because a piece of shareable code shouldn't

assume the existence of global components.

ABG