I have developed an android app with ionic.
App is almost finished except the last part. That is connect via bluetooth serial to a thermal printer and print some data.
I can succefully list all bluetooth conections and succefull connect to my thermal printer. But after that i cant print nothing.
After 2 weeks searching java libraries - nativescript modules and examples i found that the actual problem is that i need to feed printer with ascii characters.
I cant understand exactly whats going on and didnt find any good documentation.
So the only thing i have done right now is to make a page feed.
Can anyone guide me on what to look and read so i can understand how to build this thing?