X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=blobdiff_plain;f=firmware%2Fmain.c;h=d10a322bd34c721aca16d3bfbc63e12c2e4bb570;hp=5db08b17d7335ed07b370b775de44416819978e8;hb=a444b197e7f5d489227ea6952b78201f26aa82a0;hpb=33c451a9ba18c59b405d735b2420bc7b549643a4

diff --git a/firmware/main.c b/firmware/main.c
index 5db08b1..d10a322 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -35,6 +35,10 @@ void hw_suspend()
 
 void power_down()
 {
+	uint16_t wake_count = 0;
+	unsigned char btn;
+
+sleep_again:
 	// enable PCINT14, so that user can wake up later
         GIMSK |= _BV(PCIE1);
         PCMSK1 |= _BV(PCINT14);
@@ -55,6 +59,20 @@ void power_down()
 	GIMSK &= ~_BV(PCIE1);
 	PCMSK1 &= ~_BV(PCINT14);
 
+        // 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();
 }