I need code for a full subtractor in C language and I need to connect it to msp4

Question

I need code for a full subtractor in C language and I need to connect it to msp430 microcontrolle. Please read instructions and help me

You need to design and implement a digital tester for a full subtractor using an MSP430 Launchpad Analyze and modify the source code of the MSP430F20xx Demo below to produce the subtractor test inputs. A full subtractor performs single-bit subtraction of a minuend minus subtrahend and borrow bits. The latter is borrowed by the next least significant minuend bit in a multiple-bit difference calculation. You can get additional information about the components and operations used in a full subtractor in your textbook. In addition, similar information is available at the following url http://www.electronics-tutorial.net/combinational-logic-circuits/full-subtractor/index.html, which is partially included in Figure 1. Minuend SubtrahendB Difference Borrow In (Bin) (Dut (Bo)B Bo AB AB AB Bin Figure 1. Full subtractor truth table, block diagram, K-maps, and logical circuit

Explanation / Answer

Code:

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//******************************************************************************
// MSP430F20xx Demo - Software Toggle P1.0
//
// Description; Toggle P1.0 by xor'ing P1.0 inside of a software loop.
// ACLK = n/a, MCLK = SMCLK = default DCO
//
// MSP430F20xx
// -----------------
// /|| XIN|-
// | | |
// --|RST XOUT|-
// | |
// | P1.0|-->LED
//
// M.Buccini / L. Westlund
// Texas Instruments, Inc
// October 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.40A
//******************************************************************************

#include <msp430.h>

#define A BIT0
#define B BIT1
#define Bin BIT2

int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P1DIR |= A + B + Bin; // Set P1.0 to output direction

for (;;)
{
volatile unsigned int i;

P1OUT = ~(A | B | Bin); // Set output port values according to truth table
delay(); // Adding delay

P1OUT = ~(A | B) | Bin;
delay();

P1OUT = ~(A | Bin) | B;
delay();

P1OUT = ~(A) | (B | Bin);
delay();

P1OUT = A | ~(B | Bin);
delay();

P1OUT = A | ~B | Bin;
delay();

P1OUT = A | B | ~Bin;
delay();

P1OUT = A | B | Bin;
delay();

}
}

void delay(void)
{
int i = 50000; // Delay
do (i--);
while (i != 0);
}

NOTE: I don't have a board to test but this code compiles on CCSv7. In the function, I have set Bit 0,1,2 as input to subtractor. Please upvote. Thanks.

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