Hello,
I am right now trying to implement a program that stores about 1700
integers in an array, and once that array is full, a one shot timer is
started and when the fired event occurs, the elements in the array are
printed to the screen using printf and a for loop. I am trying to
print out all 1700 elements in one for loop during one timer fired
event. Initially I came across the problem that perhaps because the
buffer size for printf is initialized to 250, it could only print out
250 bits at a time. With that assumption I then tried making a program
that in the Boot.booted() event, it would put 1700 integers in the
array and then start a one shot timer. When the fired event occured,
it would
print 250 bits from the array, and then once it finished printing
those it would restart the one shot timer, so that it would print out
the 1700 bits by triggering the one shot timer fired event 6 or 7
times. However, even when I did this I came across a problem. If I set
my timer to anything lower then 80 milliseconds, it would not print
out all 1700 bits. Instead it would stop somewhere short of that, even
though I have it only print 250 bits at a time. I can't seem to figure
out what the problem is, and any help would be greatly appreciated. I
attached the code to the bottom of this page:
#include "Timer.h"
#include "printf.h"
module NewFastTxUltraC
{
uses interface Timer<TMilli> as Timer0;
uses interface Boot;
uses interface Random;
uses interface GeneralIO as PortE6;
}
implementation
{
uint16_t a;
uint16_t i = 0;
uint16_t k = 0;
bool stop = 0;
uint16_t values[1700];
event void Boot.booted()
{
call PortE6.makeOutput();
for(i = 0; i < 1700; i++)
{
a = call Random.rand16();
if(a & 0x01)
values[i] = 1;
else
values[i] = 0;
}
call Timer0.startOneShot(50);
}
event void Timer0.fired()
{
i = k*250;
k++;
for(i; (i < k*250) && (i < 1700); i++)
{
printf("%u",values[i]);
printfflush();
if(i == 1700)
{
call Timer0.stop();
stop = 1;
return;
}
}
if(!stop)
call Timer0.startOneShot(50);
}
}
Thanks,
David Blumenfeld
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