project - CSE 379 Spring 2010 Design Project Due At the...

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CSE 379 Spring 2010 Design Project Due: At the beginning of class on Thursday, April 22, 2010 Your task is to design a vending machine controller. The machine sells multiple products, each of which may have a different price. The machine has a money detector/dispenser, a product dispenser, two displays, a keypad for the customer to make product selections, and a push button to activate the coin return. The controller is an ARM-based, microprocessor controlled system that seamlessly interfaces each of the previously mentioned components. In addition, a serial interface is required so that a laptop can be connected by the operator to set various parameters and to remotely control the machine. Your project must consist of a complete system design that includes a detailed hardware diagram, programming steps, and a complete technical report. The machine can accept quarters, dimes, and nickels, each of which are stored in separate bins. The capacity of each bin is 100 coins. It can also accept one and five dollar bills. The money detector/dispenser contains a 3-bit output indicating what type of currency was entered. A 001 corresponds to a nickel, 010 a dime, 011 a quarter, 100 a one dollar bill, and 101 a five dollar bill. All other values are considered invalid. The money detector/dispenser also contains three input signals to return change. The signals are RQ (return quarter), RD (return dime), and RN (return nickel). To eject a coin, the appropriate signal must be held high for 10 milliseconds. When at least one of the coin boxes is full, the COINFUL signal will be activated by the money
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project - CSE 379 Spring 2010 Design Project Due At the...

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