/* Write ARM assembly functions for:
a)       	Function to take two unsigned parameters, and performs an ADD operation.
b)      	Function to Read the flag bits from the PSR.
Return both outputs to the main function. */

#include <stdio.h>

void setup() {
  Serial1.begin(9600);
}

extern "C" {
  unsigned int lab5_act_1_1_add(unsigned int a, unsigned int b);
  int lab5_act_1_1_flag(int, int);
}

int main () {
  unsigned int a, b;

  printf("enter a: ");
  scanf("%i", &a);
  printf("%i\n", a);

  printf("enter b: ");
  scanf("%i", &b);
  printf("%i\n", b);

  printf("ADD %i, %i, %i = %i\n", a, a, b, lab5_act_1_1_add(a, b));

  int result_flag = lab5_act_1_1_flag(a, b);
  printf("Result of flag bits: %d\n", result_flag);
  Serial1.println(result_flag,HEX);
  return 0;
}