USING CODEWARRIOR AND C LANGUAGE. Combine the external interrupt and RTI softwar

Question

USING CODEWARRIOR AND C LANGUAGE.

Combine the external interrupt and RTI software codes in compliance to the following requirements: your last name to appear on LCD row 1, the interrupt counter count number between 0 and 99 displayed on row 2, and on row 3, the value generated by the RTI.

A.

// Your name and data accomplished

// This is a simple demonstration of RTI interrupt.

// The RTI clock is default to internal oscillator running at 1 MHz.

// Writing 0x7f to CPUMRTI sets the clock divider to 16 x 2^16 = 1,048,576.

#include       /* common defines and macros */

#include "derivative.h"      /* derivative-specific definitions */

/******* Global Variables *******/

unsigned char cCount;

/******* main *******/

void main(void) {

          cCount = 0xf0;                   // for timing measurement

          DDRT = 0xf0;                    // upper nibble of Port T configured as outputs

         PTT = cCount;

          CPMURTI = 0x7f;                           // set RTI clock divide to do 0.953 Hz

          CPMUINT_RTIE = 1;                     // enable RTI

          EnableInterrupts;

          for(;;)              //infinite for loop

Explanation / Answer

// Your Name and Date accomplished
// Displaying messages on the 3 x 16 LCD
// PORT C7

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