Freescale Semiconductor Microcontrollers Manuel d'utilisateur télécharger pdf (Page 660)

100

101

ColdFire V1 Full Chip Simulation Connection

FCS Tutorials

660

Microcontrollers Debugger Manual

Step 9 - Entering User Code

1. Open the user module MyGuessTheNumber.C

2. Insert the following code before the main routine:

#include <stdlib.h>

void PutChar(unsigned char c) {

while (AS1_SendChar(c) == ERR_TXFULL) {

// could wait a bit here

}

void PutString(const char* str) {

while (str[0] != '\0') {

PutChar(str[0]);

str++;

}

void GuessTheNumber(void) {

int ran = rand() / (RAND_MAX / 9);

AS1_Init();

PutString("Guess a Number between 0 and 9\n");

PutString("Number: ");

for (;;) {

unsigned char c;

if (AS1_RecvChar(&c) == ERR_OK) {

PutChar(c); PutChar(' ');

if(c < '0' || c > '9') {

PutString("not a number, try again\n");

} else if(c == ran + '0') {

PutString("\nCongratulation! You have found the number!");

PutString("\nGuess a new number\n");

ran = rand() / (RAND_MAX / 9);

} else if(c > ran + '0') {

PutString("lower\n");

} else {

PutString("greater\n");

}

PutString("Number: ");

} else {

// could wait a bit here

}

} // for

}

3. Call the function GuessTheNumber in the main routine.

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Freescale Semiconductor Microcontrollers Manuel d'utilisateur Page 660

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