SWIG: test callback & output grabbing

client/include/pm3.h

@@ -1,11 +1,26 @@
 #ifndef LIBPM3_H
 #define LIBPM3_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct pm3_device pm3;
 
 pm3 *pm3_open(char *port);
+
+// not catching output
 int pm3_console(pm3 *dev, char *cmd);
+// catching output as it comes
+int pm3_console_async(pm3 *dev, char *cmd, int (*callback)(char* s));
+// catching output at the end
+//int pm3_console_sync(pm3 *dev, char *cmd, char* outbuf, int outbufsize);
+
 const char *pm3_name_get(pm3 *dev);
 void pm3_close(pm3 *dev);
 pm3 *pm3_get_current_dev(void);
+
+#ifdef __cplusplus
+}
+#endif
 #endif // LIBPM3_H