From a036d1e9a1d763eacd4c4e0c79386ac82e556049 Mon Sep 17 00:00:00 2001
From: Colin <colin@uninsane.org>
Date: Sat, 5 Oct 2024 12:15:20 +0000
Subject: [PATCH] use OS sleep instead of polling to reduce CPU usage
without this lvgl never releases the CPU, and just pegs one of the cores
to 100%. see
<https://github.com/lvgl/lvgl/blob/master/docs/porting/timer_handler.rst>
---
buffyboard/main.c | 3 ++-
unl0kr/main.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/buffyboard/main.c b/buffyboard/main.c
index 26054f3..1fb634f 100644
--- a/buffyboard/main.c
+++ b/buffyboard/main.c
@@ -284,7 +284,8 @@ int main(int argc, char *argv[]) {
/* Periodically run timer / task handler */
while(1) {
- lv_timer_periodic_handler();
+ uint32_t time_till_next = lv_timer_handler();
+ usleep(time_till_next * 1000);
}
return 0;
diff --git a/unl0kr/main.c b/unl0kr/main.c
index e711e44..02da2f3 100644
--- a/unl0kr/main.c
+++ b/unl0kr/main.c
@@ -591,7 +591,8 @@ int main(int argc, char *argv[]) {
uint32_t timeout = conf_opts.general.timeout * 1000; /* ms */
while(1) {
if (!timeout || lv_disp_get_inactive_time(NULL) < timeout) {
- lv_timer_periodic_handler();
+ uint32_t time_till_next = lv_timer_handler();
+ usleep(time_till_next * 1000);
} else if (timeout) {
shutdown();
}
--
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