I recently took a DwF course on Processor Expert and MQX lite. One of the labs used PE to configure console I/O for input (using getchar) and output (using printf). When I follow the lab now, the getchar() function returns something even when nothing is typed, so the program continually scrolls the output. Even when I import the board configuration from the actual class it does not work correctly - the output continually scrolls with the "Invalid Selection" message.
Is there something that needs configuring on the Console I/O component so that getchar() will work correctly? I'm using CodeWarrior 10.5 and the CodeWarrior Terminal window (but HyperTerminal and TeraTerm do the same thing.). The code is:
while(1)
{
printf("Welcome to the PEx Serial Console\n");
printf("Select from the following menu: \n\n");
printf("1 : Blink Red LED\n");
printf("2 : Stop Blinking Red LED\n");
temp_char = getchar();
if (temp_char == '1')
{
printf("\nBlinking Red LED\n\n");
BlinkTimer_Enable(NULL);
}
else if (temp_char == '2')
{
printf("\nNot Blinking Red LED\n\n");
// Stop timer and turn off LED
BlinkTimer_Disable(NULL);
RedLED_PutVal(NULL, 1);
}
else
printf("\n\nInvalid Selection!!!\n\n");
}
