int uart_getchar_timeout(uint16_t timeout)
{
int ch;
if (posSemaWait(rx->lock, timeout) != E_OK) return -1;
ch = (int) rx->buf[rx->tail];
rx->tail = (rx->tail + 1) & (UART_BUF_SIZE - 1);
rx->full = 0;
return ch;
}
void netMainThread(void* arg)
{
uint8_t i;
#if !NETSTACK_CONF_WITH_IPV6
POSTIMER_t arpTimer;
#endif
POSTIMER_t periodicTimer;
int sendRequested;
bool packetSeen;
#if !NETSTACK_CONF_WITH_IPV6
arpTimer = posTimerCreate();
P_ASSERT("netMainThread1", arpTimer != NULL);
posTimerSet(arpTimer, uipGiant, MS(10000), MS(10000));
posTimerStart(arpTimer);
#endif
periodicTimer = posTimerCreate();
P_ASSERT("netMainThread2", periodicTimer != NULL);
posTimerSet(periodicTimer, uipGiant, MS(500), MS(500));
posTimerStart(periodicTimer);
posMutexLock(uipMutex);
packetSeen = false;
while(1) {
posMutexUnlock(uipMutex);
// Using semaphore here is not fully optimal.
// As it is a counting one, it can get bumped
// to larger value than 1 by upper or interrupt
// layer. However, not much harm is done,
// this loop just spins extra times without
// doing nothing useful.
// A Pico]OS Flag object would be perfect,
// but it doesn't work with posTimer* functions.
if (!packetSeen || pollTicks == INFINITE)
posSemaWait(uipGiant, pollTicks);
posMutexLock(uipMutex);
sendRequested = dataToSend;
dataToSend = 0;
packetSeen = false;
if (sendRequested) {
for(i = 0; i < UIP_CONNS; i++) {
uip_len = 0;
uip_poll_conn(&uip_conns[i]);
if(uip_len > 0) {
#if NETCFG_UIP_SPLIT == 1
uip_split_output();
#else
#if NETSTACK_CONF_WITH_IPV6
tcpip_ipv6_output();
#else
tcpip_output();
#endif
#endif
}
}
#if UIP_UDP
for(i = 0; i < UIP_UDP_CONNS; i++) {
uip_len = 0;
uip_udp_periodic(i);
if(uip_len > 0) {
#if NETSTACK_CONF_WITH_IPV6
tcpip_ipv6_output();
#else
tcpip_output();
#endif
}
}
#endif /* UIP_UDP */
}
packetSeen = netInterfacePoll();
if (posTimerFired(periodicTimer)) {
for(i = 0; i < UIP_CONNS; i++) {
uip_periodic(i);
if(uip_len > 0) {
#if NETCFG_UIP_SPLIT == 1
uip_split_output();
#else
#if NETSTACK_CONF_WITH_IPV6
tcpip_ipv6_output();
#else
tcpip_output();
#endif
#endif
}
}
#if UIP_UDP
for(i = 0; i < UIP_UDP_CONNS; i++) {
uip_udp_periodic(i);
if(uip_len > 0) {
#if NETSTACK_CONF_WITH_IPV6
tcpip_ipv6_output();
#else
tcpip_output();
#endif
}
}
#endif /* UIP_UDP */
}
#if NETSTACK_CONF_WITH_IPV6 == 0
if (posTimerFired(arpTimer)) {
uip_arp_timer();
}
#endif
// Run contiki-style timers.
// Instead of posting events to process like
// contiki does, it just calls common callback function
// to do the work.
etimer_request_poll();
}
}
