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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		-)))
15	15
16		-(((
17		- [[LT22222-L_PingPong_Software>>https://github.com/dragino/LT-22222-L]]
18		-
19		-
	15	+* [[Source Code>>https://github.com/dragino/LT-22222-L]].
	16	+* [[Firmware>>https://github.com/dragino/LT-22222-L/releases]].
20	20	)))
21	21
22	22	= 2. Features for this firmware =
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371	371	)))
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374		-=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
	371	+=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3.2) ===
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377	377	**AT+TRIGx=a          **Trigger transmit directly without triggering time
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406	406	**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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409		-=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
	406	+=== 2.3.2 RO/DO is configured in the transmit LT. (LT1) and receiver LT (LT2)(Since firmware 1.3.2) ===
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411	411
412		-AT+DI1TODO1= maps value[,latch time]
	409	+(% style="color:red" %)**Notice:**(%%)** **LT1 **MUST** have a AT+DIxTODOx commands to send out the trigger. If LT2 has AT+DIxTOROx configured, LT2 will follow its configured and ignore LT1's AT+DIxTOROx settings.
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414		-AT+DI1TORO1= maps value[,latch time]
415	415
416		-AT+DI2TODO2= maps value[,latch time]
	412	+AT+DI1TODO1= maps value[,latch time, timeout_state]
417	417
418		-AT+DI2TORO2= maps value[,latch time]
	414	+AT+DI1TORO1= maps value[,latch time, timeout_state]
419	419
	416	+AT+DI2TODO2= maps value[,latch time, timeout_state]
420	420
	418	+AT+DI2TORO2= maps value[,latch time, timeout_state]
	419	+
	420	+
421	421	(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
422	422	|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx**
423	423	|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action
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433	433	)))
434	434	|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
435	435
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.
	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.
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438	438
	439	+**Timeout_State**:
	440	+
	441	+0: **No change** after timeout
	442	+
	443	+1: Change to **DO:0** or **RO: Open** after timeout
	444	+
	445	+2: Change to **DO:1** or **RO: Close** after timeout
	446	+
	447	+3: Change **back to state** before last trigger arrive.
	448	+
	449	+
439	439	(% style="color:blue" %)**Case1**:
440	440
441	441	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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443	443
444	444	(% style="color:blue" %)**Case2**:
445	445
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.
	457	+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.
447	447
448	448
449	449	=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===