Data Checksum in binary mode

Makefile

@@ -19,7 +19,7 @@ CCFLAGS=-g  -lrt -std=c++11 -pthread
 
 EXCL=driver_serial_emulate.o
 # Uncomment to use virtual serial port. Run 'make clean all' afterwards
-EXCL=driver_serial.o
+#EXCL=driver_serial.o
 
 .SECONDARY:
 

src/driver_obs_obsdaq.cpp

@@ -806,15 +806,16 @@ int driver_obs_obsdaq::parse_data_bin(data_obs_vector* data, char* buf) {
 		}
 	}
 
-	// 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",

usr/parameters.par

 # Baudrate for ObsDAQ
 BAUD=19200 #19200
 # PORT for ObsDAQ
-PORT=/dev/ttyUSB1
+PORT=/dev/ttyUSB0
 # Resistance of variometer
 R=1.0
 # Scale values of variometer