Martin Ling 8f43dc1be5 Use a register to hold base address of SGPIO interrupt registers.
This allows us to use ldr/str with an immediate offset to access the
SGPIO interrupt registers, rather than first having to load a register
with the specific address we want to access.

This change saves a total of 6 cycles, by eliminating two loads (2
cycles each), one of which could be executed twice.
2022-01-03 18:48:04 +00:00
..
2020-02-11 16:59:59 +00:00
2020-01-22 21:23:30 +00:00
2020-01-22 21:23:30 +00:00