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13	13	Shipped LT-22222-L is base on LoRaWAN protocol. We also develop a open source Point to Point LoRa protocol for LT-22222-L. The source code and hex file can be found at:
	14	+)))
14	14
15		-* [[Source Code>>https://github.com/dragino/LT-22222-L]].
16		-* [[Firmware>>https://github.com/dragino/LT-22222-L/releases]].
	16	+(((
	17	+ [[LT22222-L_PingPong_Software>>https://github.com/dragino/LT-22222-L]]
	18	+
	19	+
17	17	)))
18	18
19	19	= 2. Features for this firmware =
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368	368	)))
369	369
370	370
371		-=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3.2) ===
	374	+=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
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374	374	**AT+TRIGx=a          **Trigger transmit directly without triggering time
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403	403	**AT+TRIG2=2,50,60**  Once there is falling edge or rising edge on DI2 of LT1, LT1 will transmit trigger to LT2 and LT2 can sync the status of RO/DO. After power off, power on, LT1 will send trigger without falling/rising edge, so the DI changes during power off will be sync as well.
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405	405
406		-=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3.2) ===
	409	+=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
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409		-AT+DI1TODO1= maps value[,latch time, timeout_state]
	412	+AT+DI1TODO1= maps value[,latch time]
410	410
411		-AT+DI1TORO1= maps value[,latch time, timeout_state]
	414	+AT+DI1TORO1= maps value[,latch time]
412	412
413		-AT+DI2TODO2= maps value[,latch time, timeout_state]
	416	+AT+DI2TODO2= maps value[,latch time]
414	414
415		-AT+DI2TORO2= maps value[,latch time, timeout_state]
	418	+AT+DI2TORO2= maps value[,latch time]
416	416
417	417
418	418	(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
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430	430	)))
431	431	|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
432	432
433		-**latch time**, if latch time is defined, DO or RO will go back to the original status after latch time, if there is a new trigger comes, the LT2 will use the new latch time settings and ignore the old one.
	436	+latch time, if latch time is defined, DO or RO will go back to the original status after latch time, if there is a new trigger comes, the LT2 will use the new latch time settings and ignore the old one.
434	434
435	435
436		-**Timeout_State**:
437		-
438		-0: **No change** after timeout
439		-
440		-1: Change to **DO:0** or **RO: Open** after timeout
441		-
442		-2: Change to **DO:1** or **RO: Close** after timeout
443		-
444		-3: Change **back to state** before last trigger arrive.
445		-
446		-
447	447	(% style="color:blue" %)**Case1**:
448	448
449	449	AT+DI1TODO1=1  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, if DI1 of LT1 is trigger high, DO1 of LT2 will output low, if DI1 of LT1 is trigger low, DO2 of LT2 will output high.
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451	451
452	452	(% style="color:blue" %)**Case2**:
453	453
454		-AT+DI1TODO1=1,60,1  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then change to open.
	446	+AT+DI1TODO1=1,60  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then go back to original state.
455	455
456	456
457	457	=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===