X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=pwmled.c;fp=pwmled.c;h=0000000000000000000000000000000000000000;hb=f956c1fa7f47b0e8b8afe323c2eff1b6c2607c2a;hp=2640dba05bfc05edcd0c1d0f5e02f5c907919922;hpb=f7cba12a75f10da7267c2e4d4488bb5ccddbb9d9;p=bike-lights.git

diff --git a/pwmled.c b/pwmled.c
deleted file mode 100644
index 2640dba..0000000
--- a/pwmled.c
+++ /dev/null
@@ -1,243 +0,0 @@
-#include <avr/io.h>
-
-#include "lights.h"
-
-static unsigned char pwm_vals[N_PWMLEDS*N_PWMLED_MODES];
-static unsigned char adc_vals[N_PWMLEDS*N_PWMLED_MODES] = {
-	/* pwmled0 */
-	0x04, 0x14, 0x24, 0x38,
-	/* pwmled1 */
-	0x04, 0x14, 0x24, 0x38,
-	/* pwmled2 */
-	0x04, 0x14, 0x24, 0x38,
-};
-
-// TODO: maybe convert this to bitmask to simplify pwmled_needs_adc() ?
-static unsigned char pwmled_state[N_PWMLEDS];
-#define ST_DISABLED 0
-#define ST_PROBING  1
-#define ST_OFF      2
-#define ST_ON       3
-
-static unsigned char pwmled_mode[N_PWMLEDS];
-static unsigned char pwmled_mode_set[N_PWMLEDS];
-
-static unsigned char pwm_probes[N_PWMLEDS];
-
-static void start_probing(unsigned char n)
-{
-	pwmled_state[n] = ST_PROBING;
-	pwm_set(n, 0);
-	pwm_on(n);
-	pwm_probes[n] = 0;
-}
-
-void pwmled_init()
-{
-	unsigned char i;
-
-	for (i = 0; i < N_PWMLEDS*N_PWMLED_MODES; i++) {
-		pwm_vals[i] = 0;
-		pwmled_mode[i] = 0;
-		pwmled_mode_set[i] = 0;
-	}
-
-	for (i = 0; i < N_PWMLEDS; i++) {
-		start_probing(i);
-	}
-}
-
-unsigned char pwmled_needs_adc(unsigned char n)
-{
-	unsigned char st = pwmled_state[n];
-	if (st == ST_PROBING || st == ST_ON)
-		return 1;
-	else
-		return 0;
-}
-
-unsigned char pwmled_enabled(unsigned char n)
-{
-	unsigned char st = pwmled_state[n];
-	if (st == ST_OFF || st == ST_ON)
-		return 1;
-	else
-		return 0;
-}
-
-void pwmled_set_mode(unsigned char n, unsigned char mode)
-{
-	if (!pwmled_enabled(n))
-		return;
-
-#if 0
-	log_byte(0xF8);
-	log_byte(n);
-	log_byte(mode);
-#endif
-
-	if (mode == 0) {
-		pwm_off(n);
-		pwmled_state[n] = ST_OFF;
-		return;
-	}
-
-	if (mode <= N_PWMLED_MODES) {
-		unsigned char pwmval;
-		mode--;
-		pwmval = pwm_vals[n*N_PWMLED_MODES+mode];
-		pwm_set(n, pwmval);
-		pwm_on(n);
-#if 0
-		log_byte(pwmval);
-#endif
-		pwmled_state[n] = ST_ON;
-		pwmled_mode[n] = mode;
-		pwmled_mode_set[n] = 1;
-	}
-}
-
-static void inline probing_adc(unsigned char n, uint16_t adcval)
-{
-	unsigned char need_bigger = 0, i;
-	unsigned char *pwm_p = &pwm_vals[n*N_PWMLED_MODES];
-	unsigned char *adc_p = &adc_vals[n*N_PWMLED_MODES];
-	unsigned char pwm = pwm_probes[n];
-
-#if 0
-	log_byte(0xF4);
-	log_byte(n);
-	log_word(adcval);
-#endif
-
-	if (adcval > 0x100 // Too high
-		|| (pwm == 0 && adcval > 0) // non-zero voltage with zero PWM
-		) {
-		pwm_off(n);
-		pwmled_state[n] = ST_DISABLED;
-		log_byte(0xF0);
-		log_byte(n);
-		log_word(adcval);
-		return;
-	}
-
-	for (i = 0; i < N_PWMLED_MODES; i++, pwm_p++, adc_p++) {
-		uint16_t adc = *adc_p;
-		if (adc >= adcval) {
-			*pwm_p = pwm;
-			need_bigger = 1;
-		}
-	}
-
-#if 0
-	if ((n == 1 && pwm > 0x35) || adcval != 0) {
-		log_byte(n);
-		log_byte(0xF3);
-		log_byte(pwm);
-		log_word(adcval);
-	}
-#endif
-
-	if (!need_bigger) { // successfully probed
-		pwm_off(n);
-		// pwm_set(n, 0);
-		pwmled_state[n] = ST_OFF;
-		log_byte(0xF1);
-		log_byte(n);
-
-		return;
-	}
-
-	if (pwm >= 0x70) { // over the maximum!
-		pwm_off(n);
-		pwmled_state[n] = ST_DISABLED;
-		log_byte(0xF2);
-		log_byte(n);
-		// pwm_set(n, 0);
-		return;
-	}
-
-	// try to increase
-	pwm++;
-	pwm_probes[n] = pwm;
-	pwm_set(n, pwm);
-}
-
-// Feedback loop
-static void inline on_adc(unsigned char n, uint16_t adcval)
-{
-	unsigned char mode = pwmled_mode[n];
-	uint16_t adc_exp     =  adc_vals[n*N_PWMLED_MODES+mode];
-	unsigned char *pwm_p = &pwm_vals[n*N_PWMLED_MODES+mode];
-	uint16_t old_pwm     = *pwm_p;
-	uint16_t new_pwm = old_pwm;
-
-#if 0
-	log_byte(0xF5);
-	log_byte(n);
-	log_word(adcval);
-#endif
-
-	if (pwmled_mode_set[n]) { // ignore the first reading
-		pwmled_mode_set[n] = 0;
-		return;
-	}
-
-	// FIXME: running average?
-	if (2*adcval > 5*adc_exp) { // >2.5x expected, lower significantly
-		new_pwm = 2*old_pwm/3;
-	} else if (3*adcval > 4*adc_exp) { // >1.33x expected, lower a bit
-		new_pwm = old_pwm - 1;
-	} else if (4*adcval < 3*adc_exp) { // 0.75x expected, raise a bit
-		new_pwm = old_pwm + 1;
-	}
-
-	// FIXME: better disconnect detection
-	if (new_pwm > 0x60) { // disconnected?
-		new_pwm = 0x60;
-	}
-	if (new_pwm < 2) { // short-circuit?
-		new_pwm = 2;
-	}
-
-	if (new_pwm != old_pwm) {
-		*pwm_p = new_pwm;
-		pwm_set(n, new_pwm);
-#if 0
-		log_byte(0xF9);
-		log_byte(new_pwm);
-#endif
-	}
-}
-
-void pwmled_adc(unsigned char n, uint16_t adcval)
-{
-	unsigned char i, probing;
-	switch (pwmled_state[n]) {
-	case ST_PROBING:
-		probing_adc(n, adcval);
-
-#if 1
-		probing = 0;
-		for (i = 0; i < N_PWMLEDS; i++)
-			if (pwmled_state[i] == ST_PROBING)
-				probing = 1;
-
-		if (!probing) {
-			for (i = 0; i < N_PWMLEDS; i++)
-				log_byte(pwmled_state[i]);
-				
-			for (i = 0; i < N_PWMLEDS*N_PWMLED_MODES; i++)
-				log_byte(pwm_vals[i]);
-			log_flush();
-			log_set_state(4);
-		}
-#endif
-		
-		return;
-	case ST_ON:
-		on_adc(n, adcval);
-		return;
-	// WTF am I doing in this function then? Maybe recently switched off?
-	}
-}