if pkt too large, ignore, restart rx on err/timeout, loop processing schedule..

The first one is just more defensive programming, not sure if I'd seen
this failure..

The middle one did fix some hangs...

Last one is to ensure that the schedule processes more quickly and
not enforce each command to take one ms...

irr_main.c

@@ -82,25 +82,29 @@ void
 rxdone(uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
 {
 
-	if (rxpktavail) {
-		memcpy(rxpkt, payload, MIN(sizeof rxpkt, size));
+	if (rxpktavail && size <= sizeof rxpkt) {
+		memcpy(rxpkt, payload, size);
 		rxpktbuf = (struct pktbuf){
 			.pkt = rxpkt,
 			.pktlen = size,
 		};
 		rxpktavail = false;
 	}
+	Radio.Rx(0);
 }
 
 void
 rxtimeout(void)
 {
 
+	Radio.Rx(0);
 }
 
 void
 rxerr(void)
 {
+
+	Radio.Rx(0);
 }
 
 RadioEvents_t revents = {
@@ -225,16 +229,26 @@ start_sched(struct sched *sched)
 		set_chan(sched->chan, 1);
 }
 
-static void
-process_sched()
+static bool
+canproc_sched()
 {
 
 	/* nothing to do? */
 	if (schedcnt == 0)
-		return;
+		return false;
 
 	/* not yet expired */
 	if (uwTick < SCHED_HEAD.end_wait_tick)
+		return false;
+
+	return true;
+}
+
+static void
+process_sched()
+{
+
+	if (!canproc_sched())
 		return;
 
 	if (SCHED_HEAD.cmd == CMD_RUNFOR)
@@ -390,7 +404,8 @@ main()
 	//Radio.Rx(0);
 
 loop:
-	process_sched();
+	while (canproc_sched())
+		process_sched();
 
 	BoardLowPowerHandler();
 	if (Radio.IrqProcess != NULL)