Diff: main.cpp

Revision:

1:b446f401a861

Parent:

0:879aa9d0247b

Child:

2:eb447fcd8284

--- a/main.cpp	Tue Feb 12 17:39:05 2013 +0000
+++ b/main.cpp	Fri Oct 30 05:30:21 2015 +0000
@@ -1,10 +1,62 @@
 #include "mbed.h"
- 
+
+AnalogIn rx(p20);
+
 Serial pc(USBTX, USBRX); // tx, rx
- 
-int main() {
-    pc.printf("Hello World!\n");
-    while(1) {
-        pc.putc(pc.getc() + 1);
+
+int buf[20];
+int idx = 0;
+int nzeros = 0;
+
+int onCount, offCount;
+
+char decodechar(int start){
+    int val = 0;
+    for(int i=7;i>=0;i--){
+        val += ((int)buf[start+i]) << (7-i);
+    }
+    return (char) val;
+}
+
+int main()
+{
+    pc.printf("3 CM Link Board - Recieve\n");
+    bool calib = true;
+    if(calib){
+        while(true){
+            pc.printf("%f\r\n", rx.read());
+            wait_ms(100);
+            if(pc.readable()) break;
+        }
+    }
+    idx = 0;
+    onCount = 0;
+    offCount = 0;
+    while(true){
+        float v = rx.read();
+        if(v > 0.001){
+            //pc.printf("1 ");
+            onCount++;
+            offCount = 0;
+        }else{
+            if(onCount >= 5 && onCount <= 15){
+                buf[idx] = false;
+                idx++;
+            }else if(onCount >= 15 && onCount <= 25){
+                buf[idx] = true;
+                idx++;
+            }
+            onCount = 0;
+            offCount++;
+            if(offCount >= 25 || idx >=8){
+                int c = decodechar(0);
+                pc.printf("%c",c);
+                for(int i=0;i<8;i++) buf[i] = 0;
+                idx = 0;
+                offCount = 0;
+            }
+        }
+        
+        wait_ms(1);
     }
 }
\ No newline at end of file