From c9daddb636b3c03b5c53da2ef8e11b927927dd04 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Thu, 7 Feb 2013 02:15:37 +0000
Subject: lowpass filterd manual switch

git-svn-id: https://svn.spreadspace.org/avr/trunk@167 aa12f405-d877-488e-9caf-2d797e2a1cc7
---
 usb-i2c-sl018/heartbeat.c |  8 ++++++++
 usb-i2c-sl018/manual.c    | 17 ++++++++++++++---
 usb-i2c-sl018/tuer-rfid.c | 14 +++++++-------
 3 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/usb-i2c-sl018/heartbeat.c b/usb-i2c-sl018/heartbeat.c
index fd7f11a..47caffc 100644
--- a/usb-i2c-sl018/heartbeat.c
+++ b/usb-i2c-sl018/heartbeat.c
@@ -32,6 +32,10 @@
 uint8_t heartbeat_cnt = 0;                    
 uint8_t heartbeat_flag;
 
+#define FASTBEAT_PORT PORTD
+#define FASTBEAT_DDR DDRD
+#define FASTBEAT_BIT 5
+
 // while running this gets called every ~10ms
 ISR(TIMER0_COMPA_vect)
 {
@@ -55,10 +59,14 @@ void init_heartbeat(void)
   OCR0A = 155;                 // (1+155)*1024 = 159744 -> ~10 ms @ 16 MHz
   TCNT2 = 0;
   TIMSK0 = 1<<OCIE0A;
+
+  FASTBEAT_DDR |= 1<<FASTBEAT_BIT;
 }
 
 void heartbeat_task(void)
 {
+  FASTBEAT_PORT ^= 1<<FASTBEAT_BIT;
+
   if(heartbeat_flag)
     led_on();
   else
diff --git a/usb-i2c-sl018/manual.c b/usb-i2c-sl018/manual.c
index 3333a80..36f1a6c 100644
--- a/usb-i2c-sl018/manual.c
+++ b/usb-i2c-sl018/manual.c
@@ -30,6 +30,8 @@
 #define MANUAL_DDR DDRF
 #define MANUAL_BIT 0
 
+#define MANUAL_LP_MAX 255
+
 void init_manual(void)
 {
   MANUAL_DDR = MANUAL_DDR & ~(1<<MANUAL_BIT);
@@ -39,9 +41,18 @@ void init_manual(void)
 void manual_task(void)
 {
   static uint8_t last_state = 0;
+  static uint8_t lp_cnt = 0;
+
   uint8_t state = MANUAL_PIN & (1<<MANUAL_BIT);
-  if(state && state != last_state)
-    eventqueue_push(btn_toggle);
+  if(state != last_state)
+    lp_cnt++;
+  else
+    lp_cnt += lp_cnt ? -1 : 0;
 
-  last_state = state;
+  if(lp_cnt >= MANUAL_LP_MAX) {
+    if(state)
+      eventqueue_push(btn_toggle);
+    last_state = state;
+    lp_cnt = 0;
+  }
 }
diff --git a/usb-i2c-sl018/tuer-rfid.c b/usb-i2c-sl018/tuer-rfid.c
index 008d82c..8973994 100644
--- a/usb-i2c-sl018/tuer-rfid.c
+++ b/usb-i2c-sl018/tuer-rfid.c
@@ -54,13 +54,13 @@ void handle_stdio(uint8_t cmd)
              if(!sl018_reset())
                printf("ok\n\r");
              break;
-    case 'f': //get cardreader firmware version
-             do {
-               unsigned char * firmware_str = sl018_get_firmware_version();
-               if(firmware_str)
-                 printf("%s\n\r",firmware_str);
-             } while(0);    
-             break;
+    case 'f': {
+                unsigned char * firmware_str = sl018_get_firmware_version();
+                if(firmware_str)
+                  printf("%s\n\r",firmware_str);
+
+                break;
+              }
     case 'e': //flash eeprom
              flash_keystore_from_stdio();
              break;
-- 
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