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App4: SPI Output Application
Purpose
Provide a program that tests the SPI communication of the U401⁄U421⁄U451.
Description
The U4x1 has the ability to interface with SPI devices. Output expansion using a serial shift SPI device, the 74CH595, will give the U4x1 eight more output lines.
Screen Shot
This application is used for experimenting with output SPI devices, such as the 74HC595. The application can control the state of 13 output lines that can be used to select the SPI device.
A "Write SPI" button will write the data entered in the data box to the SPI device.
Hardware
Experimentation with SPI devices can be done with the 74HC595, a serial to parallel shift register.
Code
Download all application files: (all application files)
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