Trimmed unnecessary code from MS/TP receive FSM. Updated rs485 for AVR and ARM.

bacnet-stack/ports/at91sam7s/rs485.c

@@ -269,12 +269,11 @@ int main(void)
     RS485_Initialize();
     /* receive task */
     for (;;) {
-        if (RS485_DataAvailable(&DataRegister)) {
-            fprintf(stderr,"%02X ",DataRegister);
-        } else if (RS485_ReceiveError()) {
+        if (RS485_ReceiveError()) {
             fprintf(stderr,"ERROR ");
+        } else if (RS485_DataAvailable(&DataRegister)) {
+            fprintf(stderr,"%02X ",DataRegister);
         }
-
     }
 }
 #endif 

bacnet-stack/ports/at91sam7s/rs485.h

@@ -36,7 +36,6 @@ extern "C" {
 
     void RS485_Transmitter_Enable(bool enable);
 
-    /* NOTE: Only able to send up to 255 bytes at a time */
     void RS485_Send_Data(
         uint8_t * buffer,       /* data to send */
         uint16_t nbytes);       /* number of bytes of data */