From: Olivier Matz <zer0@droids-corp.org>
Date: Thu, 23 May 2013 17:40:39 +0000 (+0200)
Subject: add some comment to clarify constants in code
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=75f96dba8d659afecb6d8e9967d41c0dcb7301ac;p=beacon-tx-433.git

add some comment to clarify constants in code

Signed-off-by: Olivier Matz <zer0@droids-corp.org>
---

diff --git a/main.c b/main.c
index 7aa50c8..820cdc1 100644
--- a/main.c
+++ b/main.c
@@ -65,6 +65,7 @@ int main(void)
 	TCCR0B = (1 << CS01); /* clk/8 = 1Mhz */
 
 	while (1) {
+		/* 4 Khz */
 		wait_period();
 
 		/* buzzer at 2 Khz after 10mns if not always on */
@@ -77,9 +78,10 @@ int main(void)
 		else
 			BUZZER_OFF();
 
-		/* radio at 500 Hz */
+		/* radio duty cycle is 500/4000 */
 		if (time_period < 500) {
 			TX_ENABLE();
+			/* at 500 Hz */
 			if (time_period & 4)
 				TX_ON();
 			else