firmware: buttons + hall probe via ADC

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

diff --git a/firmware/pwmled.c b/firmware/pwmled.c
index 9a8deac4658bae6ddbb349c0196d4935d13f248e..99650d00460aeff816954cb66ff13da2e1c86f48 100644 (file)
--- a/firmware/pwmled.c
+++ b/firmware/pwmled.c
@@ -5,7 +5,10 @@
 typedef struct {
        uint16_t target, pwm;
        int16_t err_sum;
-       unsigned char mode, state, probe_steady;
+       unsigned char mode, state;
+       union {
+               unsigned char probe_steady, mode_changed;
+       };
        uint16_t mode_pwm[N_PWMLED_MODES];
        int16_t err_sums[N_PWMLED_MODES];
 } pwmled_t;
@@ -122,6 +125,7 @@ void pwmled_set_mode(unsigned char n, unsigned char mode)
                led->state = ST_ON;
                led->pwm = led->mode_pwm[mode - 1];
                led->err_sum = led->err_sums[mode - 1];
+               led->mode_changed = 1;
                pwm_set(n, led->pwm);
        } else {
                led->state = ST_OFF;
@@ -202,6 +206,10 @@ void pwmled_adc(unsigned char n, uint16_t adcval)
        if (!ST_IS_ON(led->state))
                return;
 
+       if (led->state == ST_ON && led->mode_changed) {
+               led->mode_changed--;
+               return;
+       }
        // FIXME: test for maximum adcval value (adc_max[n])
 
        old_pwm = led->pwm;
@@ -219,7 +227,7 @@ void pwmled_adc(unsigned char n, uint16_t adcval)
        led->err_sum = sum;
 
        if (led->pwm >= PWM_MAX
-               || (n == 1 && led->pwm > PWM_MAX/4 && adcval < 0x08)) {
+               || (n == 1 && led->pwm > PWM_MAX/2 && adcval < 0x08)) {
                pwmled_err(n);
                return;
        }