diff options
| author | Jeff Epler <jepler@gmail.com> | 2019-11-18 08:22:41 -0600 |
|---|---|---|
| committer | Jeff Epler <jepler@gmail.com> | 2019-11-18 11:01:23 -0600 |
| commit | 7f744a2369a5036cadfa05575da1704f709c98bb (patch) | |
| tree | 62b0c1d21d75910076a6c4b8d11a0c55861267aa /supervisor/supervisor.mk | |
| parent | 45d1b290ee13ee4080e9718909c33053583314b8 (diff) | |
Supervisor: move most of systick to the supervisor
This code is shared by most parts, except where not all the #ifdefs
inside the tick function were present in all ports. This mostly would
have broken gamepad tick support on non-samd ports.
The "ms32" and "ms64" variants of the tick functions are introduced
because there is no 64-bit atomic read. Disabling interrupts avoids
a low probability bug where milliseconds could be off by ~49.5 days
once every ~49.5 days (2^32 ms).
Avoiding disabling interrupts when only the low 32 bits are needed is a minor
optimization.
Testing performed: on metro m4 express, USB still works and
time.monotonic_ns() still counts up
Diffstat (limited to 'supervisor/supervisor.mk')
| -rw-r--r-- | supervisor/supervisor.mk | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/supervisor/supervisor.mk b/supervisor/supervisor.mk index b2e4eb1dc..5e997ee78 100644 --- a/supervisor/supervisor.mk +++ b/supervisor/supervisor.mk @@ -10,6 +10,7 @@ SRC_SUPERVISOR = \ supervisor/shared/safe_mode.c \ supervisor/shared/stack.c \ supervisor/shared/status_leds.c \ + supervisor/shared/tick.c \ supervisor/shared/translate.c ifndef $(NO_USB) |