Android Question binary data through bluetooth (problem with bytes over 127)

prochip

New Member
Licensed User
Hi friends,

I just playing with bluetooth device. All communications are working. Now I want to build a bootloader application to flash my AVR microcontrollers.

When I send a byte upto 127 all works fine. But if the microcontroller send a 128 I receive a "-90"... Where is my error?

Cheers

Jan
 
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