https://github.com/gerhard-vienna/pico-pio-74hc165

An implementation using PICOs programmable input/output block (PIO) to connect to SN74HC165 8-bit parallel-load shift registers device.
https://github.com/gerhard-vienna/pico-pio-74hc165

74hc165 pico pio

Last synced: 14 days ago
JSON representation

An implementation using PICOs programmable input/output block (PIO) to connect to SN74HC165 8-bit parallel-load shift registers device.

• Host: GitHub
• URL: https://github.com/gerhard-vienna/pico-pio-74hc165
• Owner: Gerhard-Vienna
• License: lgpl-3.0
• Created: 2022-12-25T11:23:23.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2022-12-25T17:35:55.000Z (almost 2 years ago)
• Last Synced: 2024-10-16T11:34:27.335Z (29 days ago)
• Topics: 74hc165, pico, pio
• Language: C++
• Homepage:
• Size: 9.77 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# PICO-PIO-74HC165

An implementation using PICOs programmable input/output block (PIO) to connect to 

SN74HC165 8-bit parallel-load shift registers device.

If you are also interested in its output counterpart have a look at [PICO-PIO-74HC595](https://github.com/Gerhard-Vienna/PICO-PIO-74HC595)

It supports chains of up to 4 devices.

As soon as an imput on a device changes it's state, the state of all inputs it written to the PIOs RX-Fifo.

See the included file main.cpp for an example

## How to use in your application:

1. Copy sn74165.pio into the directory that holds your applications 

2. Add:

	#include "sn74165.pio.h"

to your code.

3. Add the line:

	pico_generate_pio_header(test ${CMAKE_CURRENT_LIST_DIR}/sn74165.pio)

to the CMakeLists.txt file

## How to build the example (main.cpp):

1. Follow the instructions in [Getting started with Raspberry Pi Pico](https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf): 

"Chapter 8. Creating your own Project" to create a directory for your project.

2. Copy main.cpp, sn74165.pio and CMakeLists.txt from this repository into the newly created directory.

3. Copy the pico_sdk_import.cmake file from the external folder in your pico-sdk installation to your project directory.

4. Create the build subfolder, cd into it 

5. run "cmake .." followed by "make"