From 38d25483657e82eb546ecb8566214f830efba461 Mon Sep 17 00:00:00 2001 From: spv Date: Sun, 21 Sep 2025 00:07:50 -0400 Subject: refactoring ftw (now w/ README updates!) --- src/backlight.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/backlight.c (limited to 'src/backlight.c') diff --git a/src/backlight.c b/src/backlight.c new file mode 100644 index 0000000..0824f0b --- /dev/null +++ b/src/backlight.c @@ -0,0 +1,28 @@ +#include "common.h" +#include "config.h" + +static uint32_t curr_brightness; +static FILE* backlight_fp; + +void write_to_backlight(int brightness) { + if (!backlight_fp) { + backlight_fp = fopen(BACKLIGHT_FILE, "w"); + } + + fprintf(backlight_fp, "%d", brightness); + fflush(backlight_fp); + + curr_brightness = brightness; +} + +void backlight_on(void) { + write_to_backlight(MAX_BRIGHTNESS); + + usleep(BACKLIGHT_TIME); +} + +void backlight_off(void) { + if (curr_brightness == 0) return; + + write_to_backlight(0); +} -- cgit v1.2.3