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Example

Multiplexed USART (Microcontrollers with only one USART)

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Author: Segun Ilori

Last Updated: 2014-04-17

Package Version: 1.0.0.0

Example: 1.0.0.0

Category: Other Codes

Downloaded: 920 times

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License: MIT license  

This example demonstrates how a PIC microcontroller with a single USART peripheral can be connected to up to three USART devices; say a GSM, GPS and maybe a raspberry PI.
The USART ports are multiplexed using 74HC151 to the PIC RX pin and 74HC138.
Hardware flow control can be used to control device communication.

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