search

ADVALAIN596 / glcd-arduino

Automatically exported from code.google.com/p/glcd-arduino
0 stars 0 forks source link

AVRIO atomic nibbles #1

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
Avrio needs to be updated to support atomically updating
nibbles atomically. The code will save the SR mask interrupts.
set the i/o bits, then restore the SR.

Original issue reported on code.google.com by bperry...@gmail.com on 24 Mar 2011 at 6:25

GoogleCodeExporter commented 8 years ago 
As a first pass, the code will default to not doing ATOMIC nibbles but will 
have a
define to enable it. When enabled, nibbles will be disabled and the code will 
drop
back down to bit i/o.

changed to low priority issue as there is a solution available.
By uncommenting the GLCD_ATOMIC_IO the user does get atomic access support.
It just isn't doing atomic nibbles, instead it will drop back to bit i/o.

Original comment by bperry...@gmail.com on 24 Mar 2011 at 6:26