https://dunkels.com/adam/pt/examples.html
18 лет тому назад
The example shows two protothreads, one for the sender and one for the receiver.
#include "pt.h"
PT_THREAD(sender(struct pt *pt))
{
PT_BEGIN(pt);
do {
send_packet();
/* Wait until an ackowledgement has been received, or until the
timer expires. If the timer expires, we should send the packet
again. */
timer_set(&timer, TIMEOUT);
PT_WAIT_UNTIL(pt, acknowledgment_received() ||
timer_expired(&timer));
} while(timer_expired(&timer));
PT_END(pt);
}
PT_THREAD(receiver(struct pt *pt))
{
PT_BEGIN(pt);
/* Wait until a packet has been received, and send an
acknowledgment. */
PT_WAIT_UNTIL(pt, packet_received());
send_acknowledgement();
PT_END(pt);
}
