Скачать или смотреть Interfacing 7 segment display with MSP430 Launchpad | Tenet Technetronics

In this tutorial, we will learn how to interface a 7 segment display with MSP430 Launchpad. A 7 segment display is a device that can display numbers and some letters by lighting up different combinations of segments. A segment is a single LED that forms a part of the display. A 7 segment display has 7 segments, labeled A to G, and sometimes an additional dot segment, labeled DP.

To interface a 7 segment display with MSP430 Launchpad, we need to connect the pins of the display to the pins of the Launchpad. The Launchpad has a microcontroller called MSP430G2553, which has 16 GPIO (General Purpose Input Output) pins. We can use these pins to control the segments of the display. We also need a resistor for each segment to limit the current and protect the LED.

There are two types of 7 segment displays: common anode and common cathode. In a common anode display, all the anodes (positive terminals) of the segments are connected together and to the power supply. In a common cathode display, all the cathodes (negative terminals) of the segments are connected together and to the ground. Depending on the type of display, we need to use different logic levels to turn on or off the segments. For example, in a common anode display, we need to apply a low logic level (0V) to turn on a segment, and a high logic level (3.3V) to turn off a segment. In a common cathode display, we need to do the opposite.

In this tutorial, we will use a common anode display. The schematic diagram of the connection is shown below:


The code for interfacing the 7 segment display with MSP430 Launchpad is given below:

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