1. Example 17 SCI Receive Interrupts
Lecture L7.3

3. // Example 17: SCI using receive interrupts
#include <hidef.h> /* common defines and macros */
#include <mc9s12dp256.h> /* derivative information */
#include "queue.h"
#include "main_asm.h" /* interface to the assembly module */
#pragma LINK_INFO DERIVATIVE "mc9s12dp256b"
// SCI0 receive Interrupt Service Routine
void interrupt 20 handler(){
qstore(read_SCI0_Rx()); }

4. void main(void) {
char c;
PLL_init(); // set system clock frequency to 24 MHz
lcd_init(); // enable lcd
SCI0_int_init(9600); // initialize SCI0 at with interrupts
while(1){
while(qempty() != 0){ // empty the queue
c = getq(); // and display on lcd
data8(c); // write it to the LCD
outchar0(c); // echo it back }

5. Use host.exe to download any text file to the miniDragon+ board