void main_task
(
uint_32 initial_data
)
{
DATE_STRUCT time_rtc;
TIME_STRUCT time_mqx;
if (_lwevent_create(&lwevent,0) != MQX_OK)
{
printf("\nMake event failed");
_task_block();
}
printf ("\fStart time (MQX synchronized to RTC time during bsp init):\n\n");
/* initialize time */
time_rtc.YEAR = 2010;
time_rtc.MONTH = 10;
time_rtc.DAY = 15;
time_rtc.HOUR = 10;
time_rtc.MINUTE = 8;
time_rtc.SECOND = 0;
time_rtc.MILLISEC = 0;
_time_from_date (&time_rtc, &time_mqx);
_time_set( &time_mqx);
if( _rtc_sync_with_mqx(FALSE) != MQX_OK )
{
printf("\nError synchronize time!\n");
_task_block();
}
_time_get (&time_mqx);
_time_to_date (&time_mqx, &time_rtc);
print_mqx_time(&time_rtc, &time_mqx);
print_current_time();
/* except MPC5125 */
#ifndef BSP_TWRMPC5125
install_interrupt();
/* enable stopwatch */
install_stopwatch();
/* enable alarm */
install_alarm();
_lwevent_wait_ticks(&lwevent,LWE_ALARM,FALSE,0);
_lwevent_clear(&lwevent,LWE_ALARM);
printf ("\nALARM!\n");
print_current_time();
/* end of alarm */
printf ("Continue wasting time (2 minutes max) ...\n");
_lwevent_wait_ticks(&lwevent,LWE_STOPWATCH,FALSE,0);
_lwevent_clear(&lwevent,LWE_STOPWATCH);
printf ("\nSTOPWATCH!\n");
print_current_time();
printf ("\nClearing RTC:\n");
_rtc_init (RTC_INIT_FLAG_CLEAR | RTC_INIT_FLAG_ENABLE);
print_current_time();
install_alarm();
_lwevent_wait_ticks(&lwevent,LWE_ALARM,FALSE,0);
_lwevent_clear(&lwevent,LWE_ALARM);
printf ("ALARM!\n");
print_current_time();
#else /* BSP_TWRMPC5125 */
printf ("Waste 10 seconds here\n");
_time_delay(10000);
_rtc_get_time_mqxd (&time_rtc);
print_rtc_time(&time_rtc, &time_mqx);
#endif
printf ("Synchronize RTC to MQX time again:\n");
_rtc_sync_with_mqx (FALSE);
_rtc_get_time_mqxd (&time_rtc);
_time_from_date (&time_rtc, &time_mqx);
print_rtc_time(&time_rtc, &time_mqx);
#if PSP_HAS_IRTC == 1
irtc_test();
#endif /* PSP_HAS_IRTC == 1 */
/* Test tamper event functionality on MCF51EMxx device */
#if PSP_MQX_CPU_IS_MCF51EM
test_tamper();
#else
printf ("Finish, press/hold reset to repeat.\n");
_task_block() ;
#endif
}
/////////////////////////////READ FRAME ////////////////////////////////////////////
int read_frame(int fd, int status){
set_tentativas(3);
install_alarm();
unsigned char SET[5],fragment;
unsigned int state = 0;
int read_all = 0; //ainda nao leu tudo
SET[0] = FLAG;
SET[1] = A_SET;
SET[2] = C_SET;
SET[3] = BCC_SET;
SET[4] = FLAG;
if (status == SENDER)
{
while(get_tentativas() > 0 && read_all==0){
write(fd,SET,5);
if(get_alarm_flag()){
alarm(program.timeout); // activa alarme de 3s
set_alarm_flag(0);
}
///////STATE MACHINE FOR SENDER(UA) //////////////////////////////////////////////
unsigned int state = 0;
while(STOP==FALSE && !get_alarm_flag()){
if(state < 5) read(fd,&fragment,1);
switch(state){
case 0:
if(fragment==FLAG){
state = 1;
}
break;
case 1:
if(fragment==A_SET){
state = 2;
break;
}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 2:
if(fragment==C_SET){
state = 3;
break;
}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 3:
if(fragment==BCC_SET){
state = 4;
break;
}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 4:
if(fragment==FLAG){
state = 5;
break;}
else
state = 0;
break;
case 5:
STOP=TRUE;
read_all = 1;
alarm(0);
break;
}
}
}
}
else if (status == RECEIVER){
///////STATE MACHINE FOR RECEIVER(SET)//////////////////////////////////////////////
while(STOP==FALSE){
if(state < 5) read(fd,&fragment,1);
switch(state){
case 0:
if(fragment==FLAG){
state = 1;
}
break;
case 1:
if(fragment==A_SET){
state = 2;
break;}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 2:
if(fragment==C_SET){
state = 3;
break;}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 3:
if(fragment==BCC_SET){
state = 4;
break;}
if(fragment==FLAG)
state = 1;
else
state = 0;
break;
case 4:
if(fragment==FLAG){
state = 5;
break;
}
else
state = 0;
break;
case 5:
write(fd,SET,5);
STOP=TRUE;
read_all = 1;
break;
}
}
}
if(read_all == 0)
return -1;
}
