Write an assembly program that controls LED brightness proportional to the slope of the accelerometer's Y$-$axis. Its X$-$axis must be parallel to the Earth surface $(+/-$ reasonable tolerance$).$ If the X$-$axis is not parallel to the surface, the LED brightness must not be modified. Thus, horizontal board position $($with the blue light on it facing up$)$ corresponds to the minimum LED brightness and its vertical position $($with the USB connector facing down$)$ corresponds to the maximum LED brightness. Implement periodic accelerometer reading every approx. $100$ msec provided by TIMER$0$ timer and use LETIMER to control LED brightness. Make sure to handle TIMER$0$ event in NVIC.