To use the node in your project you should have the wayland/wio-terminal-bar-chart library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.
C++ implementation
#pragma XOD evaluate_on_pin disable#pragma XOD evaluate_on_pin enable input_UPD
node {voidevaluate(Context ctx){// The node responds only if there is an input pulseif(!isInputDirty<input_UPD>(ctx))return;// Get a pointer to the `TFT_eSPI tft` class instanceauto barchart = getValue<input_BChart>(ctx);if(getValue<input_Show>(ctx)){
barchart ->ShowAxis();}else{
barchart ->notShowAxis();}
emitValue<output_Done>(ctx,1);}}