Diff: main.cpp

Revision:

0:2094aa9eeb53

Child:

1:1099d4500d8a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Mar 11 21:40:03 2017 +0000
@@ -0,0 +1,175 @@
+#include "mbed.h"
+#include "LSM9DS1.h" //Accelerometer
+#include "uLCD_4DGL.h" //LCD
+#define MAX_BITS 100                 // max number of bits 
+#define WEIGAND_WAIT_TIME  3000      // time to wait for another weigand pulse.  
+
+int databits[MAX_BITS];    // stores all of the data bits
+int bitCount;              // number of bits currently captured
+int flagDone;              // goes low when data is currently being captured
+int weigand_counter;        // countdown until we assume there are no more bits
+
+unsigned long facilityCode=0;        // decoded facility code
+unsigned long cardCode=0;            // decoded card code
+
+
+DigitalOut LED_GREEN(p15);
+DigitalIn dataIn(p10);
+DigitalIn Clock(p5);
+
+
+InterruptIn int0(p10);
+InterruptIn int1(p5);
+
+uLCD_4DGL uLCD(p28, p27, p29); // serial tx, serial rx, reset pin;
+DigitalOut myled(LED1);
+
+/*int LED_GREEN = 11;
+int LED_RED = 12;
+int BEEP_BEEP = 10;*/
+
+// interrupt that happens when INTO goes low (0 bit)
+void ISR_INT0()
+{
+    //uLCD.print("0");   // uncomment this line to display raw binary
+    bitCount++;
+    flagDone = 0;
+    weigand_counter = WEIGAND_WAIT_TIME;
+
+}
+
+// interrupt that happens when INT1 goes low (1 bit)
+void ISR_INT1()
+{
+    //uLCD.print("1");   // uncomment this line to display raw binary
+    databits[bitCount] = 1;
+    bitCount++;
+    flagDone = 0;
+    weigand_counter = WEIGAND_WAIT_TIME;
+}
+
+void setup()
+{
+    LED_GREEN = 1;
+    myled = 1;
+    uLCD.printf("RFID Reader Setup");
+    int0.fall(&ISR_INT0);
+    int1.fall(&ISR_INT1);
+    /*pinMode(LED_RED, OUTPUT);
+    pinMode(LED_GREEN, OUTPUT);
+    pinMode(BEEP_BEEP, OUTPUT);
+    digitalWrite(LED_RED, HIGH); // High = Off
+    digitalWrite(BEEP_BEEP, HIGH); // High = off
+    digitalWrite(LED_GREEN, LOW);  // Low = On
+    pinMode(2, INPUT);     // DATA0 (INT0)
+    pinMode(3, INPUT);     // DATA1 (INT1)
+
+    uLCD.begin(9600);
+    uLCD.println("RFID Readers");
+
+    // binds the ISR functions to the falling edge of INTO and INT1
+    attachInterrupt(0, ISR_INT0, FALLING);
+    attachInterrupt(1, ISR_INT1, FALLING);
+    */
+
+    weigand_counter = WEIGAND_WAIT_TIME;
+}
+
+void printBits()
+{
+    uLCD.printf("FC = ");
+    uLCD.printf("%lu", facilityCode);
+    uLCD.printf(", CC = ");
+    uLCD.printf("%lu", cardCode);
+}
+
+void loop()
+{
+    // This waits to make sure that there have been no more data pulses before processing data
+    if (!flagDone) {
+        if (--weigand_counter == 0)
+            flagDone = 1;
+    }
+
+    // if we have bits and we the weigand counter went out
+    if (bitCount > 0 && flagDone) {
+        int i;
+
+        uLCD.printf("Read ");
+        uLCD.printf("%d", bitCount);
+        uLCD.printf(" bits. ");
+
+        if (bitCount == 35) {
+            // 35 bit HID Corporate 1000 format
+            // facility code = bits 2 to 14
+            for (i=2; i<14; i++) {
+                facilityCode <<=1;
+                facilityCode |= databits[i];
+            }
+
+            // card code = bits 15 to 34
+            for (i=14; i<34; i++) {
+                cardCode <<=1;
+                cardCode |= databits[i];
+            }
+
+            printBits();
+        } else if (bitCount == 26) {
+            // standard 26 bit format
+            // facility code = bits 2 to 9
+            for (i=1; i<9; i++) {
+                facilityCode <<=1;
+                facilityCode |= databits[i];
+            }
+
+            // card code = bits 10 to 23
+            for (i=9; i<25; i++) {
+                cardCode <<=1;
+                cardCode |= databits[i];
+            }
+
+            printBits();
+        } else {
+            // you can add other formats if you want!
+            // uLCD.println("Unable to decode.");
+        }
+
+        // cleanup and get ready for the next card
+        bitCount = 0;
+        facilityCode = 0;
+        cardCode = 0;
+        for (i=0; i<MAX_BITS; i++) {
+            databits[i] = 0;
+        }
+    }
+}
+
+
+
+Serial pc(USBTX, USBRX);
+
+AnalogIn in(p20); //Proximity
+float voltage;
+
+int IDNum;
+
+
+int main()
+{
+    uLCD.cls();
+
+    /*LSM9DS1 IMU(p9, p10, 0xD6, 0x3C);
+    IMU.begin();
+    if (!IMU.begin()) {
+        pc.printf("Failed to communicate with LSM9DS1.\n");
+    }*/
+    
+    setup();
+    uLCD.printf("After Setup \n");
+    
+    while(1) {
+        
+        loop();
+        
+    }
+}