delete pwm_off(), use pwm_set instead

[bike-lights.git] / firmware / pwm.c

diff --git a/firmware/pwm.c b/firmware/pwm.c
index 2df2e6bb8b9abe762c1bb6208a13e6a4dde4cd7c..4eb2f83183a1ee411176b58815180afe12d786d0 100644 (file)
--- a/firmware/pwm.c
+++ b/firmware/pwm.c
@@ -4,7 +4,7 @@
 
 #include "lights.h"
 
-#define PWM_MAX 0x1FF
+#define PWM_MAX 0x0FF
 
 void init_pwm()
 {
@@ -36,15 +36,6 @@ void init_pwm()
        PORTB &= ~(_BV( PB1 ) | _BV( PB3 ) | _BV( PB5 )); // set to zero
 }
 
-void pwm_on(unsigned char n)
-{
-       switch (n) {
-       case 0: DDRB |= _BV(PB1); break;
-       case 1: DDRB |= _BV(PB3); break;
-       case 2: DDRB |= _BV(PB5); break;
-       }
-}
-
 void pwm_off(unsigned char n)
 {
        switch (n) {
@@ -58,8 +49,13 @@ void pwm_set(unsigned char n, unsigned char stride)
 {
        TC1H = 0x00;
        switch (n) {
-       case 0: OCR1A = stride; break;
-       case 1: OCR1B = stride; break;
+       case 0:
+               OCR1A = stride;
+               DDRB |= _BV(PB1);
+               break;
+       case 1: OCR1B = stride;
+               DDRB |= _BV(PB3);
+               break;
        case 2: {
                        uint16_t s16 = PWM_MAX - (uint16_t)stride;
                        volatile unsigned char hi, lo;
@@ -67,6 +63,7 @@ void pwm_set(unsigned char n, unsigned char stride)
                        lo = s16 & 0xFF;
                        TC1H = hi;
                        OCR1D = lo;
+                       DDRB |= _BV(PB5);
                }
                break;
        }