X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=firmware%2Fmain.c;h=ea3bb69d1384dd5840c5e6a90066dda0807a229c;hb=014b5cfa49f3697ad13d717949327e4b790e20f9;hp=efebdabafb5d2aa30571b65e49ca1683b006a2c6;hpb=f956c1fa7f47b0e8b8afe323c2eff1b6c2607c2a;p=bike-lights.git

diff --git a/firmware/main.c b/firmware/main.c
index efebdab..ea3bb69 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -2,12 +2,15 @@
 #include <util/delay.h>
 #include <avr/sleep.h>
 #include <avr/interrupt.h>
+#include <avr/power.h>
 #include <avr/wdt.h>
 
 #include "lights.h"
 
-void hw_setup()
+static void hw_setup()
 {
+	wdt_enable(WDTO_1S);
+	init_battery();
 	init_pwm();
 	init_adc();
 	init_tmr();
@@ -21,17 +24,79 @@ void hw_setup()
 	set_sleep_mode(SLEEP_MODE_IDLE);
 }
 
-int main(void)
+static void hw_suspend()
 {
-	log_init();
-	wdt_enable(WDTO_1S);
+	susp_pwm();
+	susp_adc();
+	susp_tmr();
+	susp_gpio();
+	wdt_disable();
+}
+
+
+void power_down()
+{
+	uint16_t wake_count = 0;
+	unsigned char btn;
+
+	hw_suspend();
+sleep_again:
+	// enable PCINT14, so that user can wake up later
+        GIMSK |= _BV(PCIE1);
+        PCMSK1 |= _BV(PCINT14);
+
+	// G'night
+        set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+        sleep_enable();
+        sleep_bod_disable();
+        sei();
+        sleep_cpu();
+
+	// G'morning
+	cli();
+
+        sleep_disable();
+
+	// Disable PCINT14
+	GIMSK &= ~_BV(PCIE1);
+	PCMSK1 &= ~_BV(PCINT14);
 
-	_delay_ms(100);
+        // allow wakeup by long button-press only
+        for (btn = 0; btn < 5; btn++) {
+                if ((PINB & _BV(PB6)) != 0) {
+                        wake_count++;
+                        goto sleep_again;;
+                }
+                _delay_ms(100);
+        }
+
+	// ok, so I will wake up
+	log_byte(0xb1);
+	log_word(wake_count);
+	log_flush();
 
 	hw_setup();
+}
+
+
+ISR(PCINT_vect)
+{
+	GIMSK &= ~_BV(PCIE1);
+	PCMSK1 &= ~_BV(PCINT14);
+}
+
+int main(void)
+{
+	log_init();
+
+	power_usi_disable(); // Once for lifetime
+	ACSRA |= _BV(ACD);   // disable analog comparator
 
 	log_set_state(3);
 
+	hw_setup();
+	power_down();
+
 	sei();
 #if 1
 	while (1) {