--- /dev/null
+/*
+ *
+ * Copyright 2019 AT&T Intellectual Property
+ * Copyright 2019 Nokia
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "stdio.h"
+#include <string.h>
+#include <unistd.h>
+
+#include "adruino_serial.h"
+
+int start_serial_inferface(int baudrate, char *serial_port)
+{
+ int fd = -1;
+
+ fd = serialport_init(serial_port, baudrate);
+ if(fd == -1) {
+ fprintf(stderr, "couldn't open serial port %s\n", serial_port);
+ return -1;
+ } else {
+ fprintf(stderr, "Openning serial port: %s ...\n", serial_port);
+ }
+
+ serialport_flush(fd); // take 2 seconds
+ fprintf(stderr, "Serial port ready!\n");
+
+ return fd;
+
+}
+
+int serial_readline(int fd, char* buf, int buf_max)
+{
+ if( fd == -1 ){
+ perror("serial port not opened");
+ return -1;
+ }
+
+ memset(buf, 0, buf_max);
+
+ do {
+ serialport_read_until(fd, buf, SERIAL_EOL_CHAR, buf_max, SERIAL_TIMEOUT);
+ } while( buf[0] == '\n' );
+
+ // serialport_read_until(fd, buf, SERIAL_EOL_CHAR, buf_max, SERIAL_TIMEOUT);
+
+ return 0;
+}
+
+int serial_writeline(int fd, char* buf)
+{
+ if(buf[strlen(buf)-1] != SERIAL_EOL_CHAR){
+ //append EOL to buf
+ int len = strlen(buf);
+ buf[len] = SERIAL_EOL_CHAR;
+ buf[len+1] = '\0';
+ }
+
+ serialport_write(fd, buf);
+
+ return 0;
+}
+
+//For testing only
+void test_adruino_serial(void)
+{
+ int fd;
+ char buf[MAX_SERIAL_BUFFER];
+
+ fd = start_serial_inferface(DEFAULT_BAUDRATE, DEFAULT_SERIAL_PORT);
+
+ while(1){
+ fprintf(stderr, "[E2 Agent]: ");
+ fgets(buf, MAX_SERIAL_BUFFER, stdin);
+
+ // serialport_write(fd, "hello\n");
+ //serialport_write(fd, buf);
+ serial_writeline(fd, buf);
+
+ serial_readline(fd, buf, MAX_SERIAL_BUFFER);
+ fprintf(stderr, "[Adruino] %s", buf);
+ }
+
+ return;
+}