From edf3eeb0aab952eba2464debdb65be58e63c0580 Mon Sep 17 00:00:00 2001
From: Othmar Gsenger <otti@wirdorange.org>
Date: Sun, 27 Jan 2013 22:52:15 +0000
Subject: added check card

git-svn-id: https://svn.spreadspace.org/avr/trunk@78 aa12f405-d877-488e-9caf-2d797e2a1cc7
---
 usb-i2c-sl018/tuer-rfid.c | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

(limited to 'usb-i2c-sl018')

diff --git a/usb-i2c-sl018/tuer-rfid.c b/usb-i2c-sl018/tuer-rfid.c
index 878e731..244315c 100644
--- a/usb-i2c-sl018/tuer-rfid.c
+++ b/usb-i2c-sl018/tuer-rfid.c
@@ -43,7 +43,11 @@
 #include <avr/eeprom.h>
 #define EEPROM_SIZE 1024
 
-typedef unsigned char keyslot_t[8];
+typedef union
+{
+  uint64_t uint;
+  unsigned char byte[8];
+} keyslot_t;
 keyslot_t EEMEM keyslots[EEPROM_SIZE/sizeof(keyslot_t)];
 
 const uint8_t SL018_ADDR = 0xa0;
@@ -155,6 +159,24 @@ unsigned char sl018_send_buffer(const unsigned char * buffer)
 }
 
 
+bool check_card(unsigned char * uid, uint8_t uid_len)
+{
+  keyslot_t card;
+  card.uint=0;
+  for (uint8_t pos=0; pos<uid_len; pos++)
+    card.byte[pos]=uid[pos];
+  keyslot_t * ks;
+  for(ks=keyslots;ks<keyslots+EEPROM_SIZE/sizeof(keyslot_t);ks++)
+  {
+    if(card.uint==ks->uint)
+    {
+      fprintf(usb,"Found\n");
+      return 1;
+    }
+  }
+  return 0;
+}
+
 void flash_eeprom_from_usb(void)
 {
   keyslot_t keyslot;
@@ -166,12 +188,12 @@ void flash_eeprom_from_usb(void)
   {
     int16_t BytesReceived = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface);
     while(BytesReceived >0) {
-      keyslot[byte_pos++]=fgetc(usb);
+      keyslot.byte[byte_pos++]=fgetc(usb);
       BytesReceived--;
       if (byte_pos == sizeof(keyslot))
       {
         byte_pos=0;
-        eeprom_write_block(&keyslot,&keyslots[keyslot_pos],sizeof(keyslot));
+        eeprom_update_block(&keyslot,&keyslots[keyslot_pos],sizeof(keyslot));
         keyslot_pos++;
         fprintf(usb,".");
         fflush(usb);
@@ -193,7 +215,7 @@ void dump_eeprom_to_usb(void)
   {
     eeprom_read_block(&keyslot,&keyslots[keyslot_pos],sizeof(keyslot));
     for (uint8_t i=0; i< sizeof(keyslot); i++)
-      fprintf(usb,"%02X",keyslot[i]);
+      fprintf(usb,"%02X",keyslot.byte[i]);
     fprintf(usb,"\n\r");
   }
 }
-- 
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