Update lay1+2.c

interrupts/crc/lay1+2.c

@@ -15,7 +15,7 @@
 
 //typedef unsigned char byte;
 
-#define MAXFRAMESIZE 257 //in byte
+#define MAXFRAMESIZE 261 //in byte
 
 // Init of Send-/Receive-Buffer
 byte send[MAXFRAMESIZE]= {0}; // 0xB3, 0x10 = 10110011, 00010000
@@ -39,10 +39,7 @@ void delay(int ms){
 }
 
 void fillSend (byte* payload, byte size){
-    //payload padden (Preambel, crc berechnung, size, rückgabe, readyToSend)
-    for(byte i = 0; i<size; i++)
-        printf("%d", payload[i]);
-    puts("");
+    //payload padding (Preambel, crc berechnung, size, rückgabe, readyToSend)
 
     send[0] = 0x7E; //01111110
 
@@ -51,15 +48,17 @@ void fillSend (byte* payload, byte size){
         byte x = 32-i*8;
         send[i] = (byte)((checksum & ((uint32_t)(255) << (x))) >> x);
     }
+
     send[5] = size;
     for(byte i = 6; i < size+6; i++){
         send[i]= payload[i-6];
     }
-    printf("Preambel = %d, CRC-Checksum = %d%d%d%d, Payload-Length = %d\nPayload= ", send[0], send[1], send[2], send[3], send[4], send[5]);
+    /* printf("Preambel = %d, CRC-Checksum = %d%d%d%d, Payload-Length = %d\nPayload= ", send[0], send[1], send[2], send[3], send[4], send[5]);
     for(byte i = 0; i < size; i++){
         printf("%d ", send[i+6]);
     }
     puts("");
+    */
     readyToSend = 1;  
 }
 
@@ -104,14 +103,14 @@ int main(void){
             if(readyToReceive){
                 if(bufferIndex != 0) receivedFrame[receiveIndex] = frame[bufferIndex-1];
                 else receivedFrame[receiveIndex] = frame[MAXFRAMESIZE-1];
-                printf("receivedFrame[%d] = %d, bufferIndex: %d \n", receiveIndex, receivedFrame[receiveIndex], bufferIndex);
+                //printf("receivedFrame[%d] = %d, bufferIndex: %d \n", receiveIndex, receivedFrame[receiveIndex], bufferIndex);
                 
                 if(receiveIndex==0){
                         if(receivedFrame[receiveIndex] == 0x7E) receiveIndex++;
                 }
                 else if(receiveIndex==5){
                         sizeToReceive = (uint16_t)receivedFrame[receiveIndex];
-                        printf("sizeToReceive = %d\n", sizeToReceive);
+                        //printf("sizeToReceive = %d\n", sizeToReceive);
                         receivedFrame = (byte*) realloc (receivedFrame, (sizeToReceive+6)*sizeof(byte));
                         receiveIndex++;
                 }
@@ -183,12 +182,9 @@ int main(void){
         frame[bufferIndex] = (frame[bufferIndex] << 1) + ((PIND & (1 << PD5)) >> PD5);
         bitIndex--;
         if(bitIndex == 255) {
-            if (bufferIndex == 0 && frame[bufferIndex] != 0x7E) puts("Wrong preambel.");
-            else {
-                if(bufferIndex != MAXFRAMESIZE-1) bufferIndex++;
-                else bufferIndex = 0;
-                readyToReceive = 1;    
-            }
+            if(bufferIndex != MAXFRAMESIZE-1) bufferIndex++;
+            else bufferIndex = 0;
+            readyToReceive = 1;
             bitIndex=7;
         }
         //frame[bufferIndex] = (frame[bufferIndex] << 1) + ((PIND & (1 << PD5)) >> PD5);