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

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: "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"