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-rw-r--r--pwm.c22
1 files changed, 7 insertions, 15 deletions
diff --git a/pwm.c b/pwm.c
index e981e2d..cf7b854 100644
--- a/pwm.c
+++ b/pwm.c
@@ -35,21 +35,13 @@ void pwm_set_rgb(uint8_t r, uint8_t g, uint8_t b)
void pwm_worker_loop(void)
{
for (;;) {
- if (value_red)
- PORTA |= (1 << PA0);
- if (value_green)
- PORTA |= (1 << PA1);
- if (value_blue)
- PORTA |= (1 << PA2);
-
- for (uint16_t i = 0; i < 4096; i++) {
- if (value_red < i)
- PORTA &= ~(1 << PA0);
- if (value_green < i)
- PORTA &= ~(1 << PA1);
- if (value_blue < i)
- PORTA &= ~(1 << PA2);
- }
+ for (uint16_t i = 0; i < 4096; i++) {
+ // this should take about the same time for each iteration, regardless of pulse width
+ PORTA= (PORTA & ~((1<<PA0)|(1<<PA1)|(1<<PA2))) |
+ (value_red > i? (1<<PA0): 0) |
+ (value_green > i? (1<<PA1): 0) |
+ (value_blue > i? (1<<PA2): 0);
+ }
}
}