[BRLTTY] ALVA BC640 with BRLTTY

[Teemu M Kuusisto]

Hello,

I am currently testing this ALVA BC640 display with BRLTTY. I am able to 
connect it via USB and Bluetooth with no problems. But when I add the 
feature pack to the display, the bluetooth connection is not working any 
more. I don't know where the problem is, but thought it would be as 
follows: When the feature pack is connected to the display, there is more 
bluetooth services available. Is BRLTTY unavailable to choose the right 
service or channel at this point?

I ran a l2ping for both of the bluetooths and it worked. Therefore the 
connection itself seems to be alright.

Additionally, is it possible to change the key table for this ALVA driver? 
I am not satisfied with the curren key mappings. Three of four smartpad 
buttons are used to help, command learning mode and settings menu, for 
example. These functions are not used as usual as 'go to first line' or 
'go to last line'.

-Teemu