This is a sample C app to use on a NumWorks calculator.

#include <eadk.h>

int main(int argc, char * argv[]) {
  eadk_display_draw_string("Hello, world!", (eadk_point_t){0, 0}, true, eadk_color_black, eadk_color_white);
  eadk_timing_msleep(3000);
}

To build this sample app, you will need to install the embedded ARM toolchain and Node.js. The C SDK for Epsilon apps is shipped as an npm module called nwlink that will automatically be installed at compile time.

brew install numworks/tap/arm-none-eabi-gcc node # Or equivalent on your OS
make clean && make build

You should now have a output/app.nwa file that you can distribute! Anyone can now install it on their calculator from the NumWorks online uploader.

To run the app on your development machine, you can use the following command

# Now connect your NumWorks calculator to your computer using the USB cable
make run

This sample app is distributed under the terms of the BSD License. See LICENSE for details.

NumWorks is a registered trademark.