Fix error

See merge request !61

coupler/mod_io_i2c.h

@@ -113,6 +113,7 @@ static int setRelayState(int command, int i2c_addr)
     {
         /* ERROR HANDLING: i2c transaction failed */
         printf("Error writing to i2c slave (0x%x).\n", i2c_addr);
+        exit(1);
     }
     close(file);
     return 0;
@@ -156,11 +157,13 @@ static int getDigitalInputState(int i2c_addr, char **digital_input)
     {
         /* ERROR HANDLING: i2c transaction failed */
         printf("Error writing to i2c slave (0x%x).\n", i2c_addr);
+        exit(1);
     }
     if (read(file, read_buf, 1) != 1)
     {
         /* ERROR HANDLING: i2c transaction failed */
         printf("Error reading digital input from i2c slave (0x%x).\n", i2c_addr);
+        exit(1);
     }
     else
     {
@@ -208,11 +211,13 @@ static int getAnalogInputStateAIN(int i2c_addr, int **analog_input, uint8_t read
     {
         /* ERROR HANDLING: i2c transaction failed */
         printf("Error writing to i2c slave (0x%x).\n", i2c_addr);
+        exit(1);
     }
     if (read(file, read_buf, 2) != 2)
     {
         /* ERROR HANDLING: i2c transaction failed */
         printf("Error reading analog input from i2c slave (0x%x).\n", i2c_addr);
+        exit(1);
     }
     else
     {

coupler/server.c

@@ -48,8 +48,6 @@
 #include <signal.h>
 #include <argp.h>
 #include <string.h>
-#include "common.h"
-#include "mod_io_i2c.h"
 #include <time.h>
 #include <open62541/plugin/log_stdout.h>
 #include <open62541/server.h>
@@ -57,6 +55,10 @@
 #include <open62541/plugin/accesscontrol_default.h>
 #include <open62541/plugin/pubsub_ethernet.h>
 #include <open62541/plugin/pubsub_udp.h>
+#include "common.h"
+
+// variable indicating if OPC UA server is running or not
+static volatile UA_Boolean running = true;
 
 // global ID of coupler
 static int COUPLER_ID = 0;
@@ -92,6 +94,7 @@ char *PASSWORD;
 char *X509_KEY_FILENAME;
 char *X509_CERTIFICATE_FILENAME;
 
+#include "mod_io_i2c.h"
 #include "gpio.h"
 #include "keep_alive.h"
 #include "keep_alive_publisher.h"
@@ -99,8 +102,6 @@ char *X509_CERTIFICATE_FILENAME;
 #include "cli.h"
 #include "mod_io_opc_ua.h"
 
-static volatile UA_Boolean running = true;
-
 static void stopHandler(int sign)
 {
     UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "received ctrl-c");