X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=blobdiff_plain;f=firmware%2Fbuttons.c;h=467a09ab84f54f910ebba3adb32007c16beb23c3;hp=17f4bffad9f70e671994e30582616adb309aaa23;hb=47e678a90062fa2dbc6cb8f9e5efc81072f5dcc5;hpb=ed608010c0a708b9be0d3577d7f4d3313eb2e851

diff --git a/firmware/buttons.c b/firmware/buttons.c
index 17f4bff..467a09a 100644
--- a/firmware/buttons.c
+++ b/firmware/buttons.c
@@ -6,8 +6,7 @@
 #include "lights.h"
 
 static uint16_t button_start[N_BUTTONS];
-static unsigned char button_pressed[N_BUTTONS];
-static unsigned char just_waked_up;
+static unsigned char prev_pin;
 
 static unsigned char user_params[MAX_USER_PARAMS] = { 0, 0, 0 };
 static unsigned char user_params_max[MAX_USER_PARAMS] = { 3, 2, 2 };
@@ -21,8 +20,6 @@ static unsigned char user_params_state = 0;
 
 static uint16_t user_params_starttime;
 
-static void do_sleep();
-
 static void toggle_bright_mode()
 {
 	// TODO
@@ -75,7 +72,7 @@ static inline void short_press(unsigned char button)
 static inline void long_press(unsigned char button)
 {
 	if (button == 0) {
-		do_sleep();
+		power_down();
 		return;
 	}
 
@@ -96,77 +93,51 @@ void init_buttons()
 	DDRA &= ~(_BV(PA3) | _BV(PA4));
 	PORTA |=  _BV(PA3) | _BV(PA4);
 
-	for (i=0; i < N_BUTTONS; i++) {
-		button_start[i] = 0;
-		button_pressed[i] = 0;
-	}
-
-	just_waked_up = 1;
+	button_start[0] = 0;
+	button_start[1] = 0;
+	prev_pin = _BV(PA3) | _BV(PA4);
 }
 
-static void do_sleep()
+void timer_check_buttons()
 {
-	log_byte(0xb0);
-	log_flush();
-
-	hw_suspend();
-	gpio_before_poweroff(); // Set the status LED on again
-
-	while((PINA & _BV(PA3)) == 0)
-		; // wait for button release
+	unsigned char pin = PINA & (_BV(PA3) | _BV(PA4));
 
-	_delay_ms(100);
+	handle_button(0, pin & _BV(PA3), prev_pin & _BV(PA3));
+	handle_button(1, pin & _BV(PA4), prev_pin & _BV(PA4));
 
-	susp_gpio(); // disable the status LED
+	prev_pin = pin;
 
-	power_down();
+	if (jiffies - user_params_starttime > 500) {
+		user_params_state = 0;
+		// set_status_led(0, idle);
+		// set_status_led(1, idle);
+	}
 }
 
-void timer_check_buttons()
+static void handle_button(unsigned char button, unsigned char cur,
+	unsigned char prev)
 {
-	unsigned char pin = PINA;
-	unsigned char i;
-	unsigned char port_states[N_BUTTONS] = {
-		pin & _BV(PA3),
-		pin & _BV(PA4),
-	};
-
-	for (i = 0; i < N_BUTTONS; i++) {
-		if (!port_states[i]) { // is pressed
-			if (i == 0 && just_waked_up)
-				continue;
-			if (button_pressed[i] == 0) {
-				// begin of button press
-				button_pressed[i] = 1;
-				button_start[i] = jiffies;
-#if 0
-				log_byte(0xC0);
-				log_word(jiffies);
-#endif
-			} else if (button_pressed[i] == 1) {
-				// been already pressed
-				uint16_t duration = jiffies - button_start[i];
-				if (duration > 80) {
-					// long button press
-					button_pressed[i] = 2;
-					long_press(i);
-				}
-			}
-		} else { // is not pressed
-			if (i == 0)
-				just_waked_up = 0;
-			if (button_pressed[i]) { // just depressed
-				uint16_t duration = jiffies - button_start[i];
-#if 1
-				log_byte(0xC1);
-				log_word(duration);
-				log_flush();
-#endif
-				button_pressed[i] = 0;
-				if (duration > 6 && duration < 30)
-					short_press(i);
-			}
+	// BEWARE: pins are at _zero_ when pressed!
+	if (!cur && prev) {                   // --- just pressed ---
+		button_start[i] = jiffies;
+		// set_status_led(button, 0);
+
+	} else if (!cur && !prev) {           // --- is still pressed ---
+		uint16_t duration = jiffies - button_start[i];
+
+		if (duration > 80) {
+			// set_status_led(button, 1); // acknowledge long press
+		}
+	} else if (cur && !prev) {            // --- just released ---
+		uint16_t duration = jiffies - button_start[i];
+
+		if (duration > 6 && duration < 30)
+			short_press(button);
+		} else if (duration > 80) {
+			// set_status_led(button, 0);
+			long_press(button);
 		}
+		// ignore other button-press durations
 	}
 }