ShiftRegister 74HC595 Raspberry Pi Pico/RP2040 Library

This library is a port of the Arduino ShiftRegister 74HC595 Library by Timo Denk, all functions are a 1:1 port of the original apart from the class instantiator due to the Pico's implementation of SPI.

This library simplifies the usage of shift registers. For instance, it allows to set pins of the shift register just like normal pico pins:

sr.set(1, 1); //set pin 1 to value 1 (ON)

Usage

For implementation details on how to use the library see the example sketch found in this repository at /example/example.cpp.

It is recommended that you add the library as a git submodule in your project using

git submodule add https://github.com/Devnol/ShiftRegister74HC595-Pico

in your project folder.

If you're not using git, you can simply clone the project inside your current project using

git clone https://github.com/Devnol/ShiftRegister74HC595-Pico

or download the latest version from github as a zip file.

To integrate it into your project, open your project's CMakeLists.txt and add the following lines:

(after pico_sdk_init()):

add_subdirectory(ShiftRegister74HC595)

include_directories(ShiftRegister74HC595/src)

also add ShiftRegister74HC595 in your target_link_libraries()

Wiring

An example wiring diagram is available at /example/example_schematic.png or as a fritzing sketch at /example/example_schematic.fzz

Building Standalone (for development or testing the example)

Building the library requires the pico-sdk folder to be available as the PICO_SDK_PATH environment variable. CMake is also required for building.

Building with Visual Studio Code

To build the project and examples with VScode, open the code workspace and modify the PICO_SDK_PATH variable in .vscode/settings.json. Make sure you have the CMake Tools extension installed, then run CMake: Configure, choose arm-none-eabi and CMake: Build to compile the library and example. The example will be found under the build/SR_example folder in various formats.

Building manually

To manually build the project and examples using the command line, create a Build subfolder and move into it: (examples are for Linux/macOS)

mkdir Build
cd Build

Then, run cmake in the current folder using the parent folder CMakeLists as the configuration file:

cmake ../

Finally, run make from within the build folder.

Questions/Issues

If you have a problem, bug or question do not hesitate to open an issue on this GitHub repository