lunny/qmk_firmware-mirror
1
0
Fork 0
mirror of https://github.com/qmk/qmk_firmware synced 2024-12-22 16:36:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

Unify behaviour of wait on AVR (#14025)

Browse Source
This commit is contained in:
Joel Challis 2021-08-16 17:28:12 +01:00 committed by GitHub
parent 4818debcd0
commit 2bc8215ce5
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
tmk_core/common/avr/_wait.h
View File

@ -17,8 +17,26 @@
#include <util/delay.h>
#define wait_ms(ms) _delay_ms(ms)
#define wait_us(us) _delay_us(us)
#define wait_ms(ms) \
do { \
if (__builtin_constant_p(ms)) { \
_delay_ms(ms); \
} else { \
for (uint16_t i = ms; i > 0; i--) { \
_delay_ms(1); \
} \
} \
} while (0)
#define wait_us(us) \
do { \
if (__builtin_constant_p(us)) { \
_delay_us(us); \
} else { \
for (uint16_t i = us; i > 0; i--) { \
_delay_us(1); \
} \
} \
} while (0)
/* The AVR series GPIOs have a one clock read delay for changes in the digital input signal.
* But here's more margin to make it two clocks. */