tests in binary mode updated

src/driver_obs_obsdaq.cpp

@@ -788,23 +788,27 @@ int driver_obs_obsdaq::parse_data_bin(data_obs_vector* data, char* buf) {
 
 	// Check 7th bits
 	for (int i=0; i<strlen(buf);i++){
-		if (buf[i]<32 || buf[i]>159){
-			fprintf(stderr,"Faulty data: 7th bit check failed for %d.",
-					buf[i]);
+		if ((unsigned char) buf[i]<32 || (unsigned  char) buf[i]>159){
+			fprintf(stderr,"Faulty data: 7th bit check failed for byte %d: %d.\n",
+					i,(unsigned char) buf[i]);
+			//fprintf(stderr,"%d %d %d %d %d %d %d %d\n",buf[i]&1,(buf[i]&2)/2,
+			//        (buf[i]&4)/4,(buf[i]&8)/8,(buf[i]&16)/16,(buf[i]&32)/32,
+			//        (buf[i]&64)/64,(buf[i]&128)/128);
 
 			return(-1);
 		}
 	}
 
-	// Check control bit
+	// Check checksum byte
 	tmp_d=0;
+        // Sum over N-1 data bytes
 	for (int i=0; i<reclen-1; i++){
 		tmp_d += buf[i];
 	}
-
+        // Last byte must contain sum of last (N-1) bytes in bits 0-6
 	if ( (tmp_d&127) != (buf[reclen-1]&127) ){
 		fprintf(stderr,"Faulty data: Control sum check failed for ");
-		for (int i=0; i<strlen(buf);i++){
+		for (int i=0; i<reclen-1;i++){
 			fprintf(stderr,"%d ",buf[i]);
 		}
 		fprintf(stderr,"and values %d %d %d.\n",