gbdk_playground/input_wait/input_wait.c

#include <stdio.h>
#include <gb/gb.h>

void main() {
  while(1) {
    printf("Press Start\n\n");
    waitpad(J_START);

    printf("Please hold down A!\n\n");
    waitpad(J_A);
    printf("Holding down A!\n\n");
    waitpadup();
    printf("Tired already?\n\n\n");
  }
}