Source Code for Arduino Nano to control RC Servo to Simulate Barrier Gate function

I need help to write a Arduino Software to make a Miniature Barrier Gate. - Arduino Nano - 3 tact switch with pull-up resistor. - One input when pulse to GND open the barrier gate fast ( 1.5 seconds ) - One input when pulse to GND close the barrier gate slowly. ( 3 seconds ) - One input when pulse to GND stop de barrier gate movement. - When is closing, if pulse the OPEN command, need stop and open immediately. - When is open, if pulse the CLOSE command, need ignore. - Use RC Digital Servo Motor. Open is about 85 degrees. - Open and close movement need acceleration and deceleration to start and stop. - Open and close must be smooth. You can watch how the barrier gate move in this video from youtube: [login to view URL] Need give the source code to test here in my prototype, if is working well i will release the payment.