Changes for page Point to Point Communication of LT-22222-L
Last modified by Edwin Chen on 2022/11/22 09:38
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... ... @@ -26,7 +26,6 @@ 26 26 (% class="wikigeneratedid" id="H2.2.Configure" %) 27 27 (% style="color:blue" %)**Configure:** 28 28 29 - 30 30 (% border="1" style="background-color:#f7faff; color:black; width:500px" %) 31 31 |=**A's configuration**|=**B's configuration** 32 32 |AT+GROUPMOD=0|AT+GROUPMOD=0 ... ... @@ -39,6 +39,7 @@ 39 39 |AT+DI2TODO2=2 |AT+DI2TODO2=2 40 40 |AT+DI2TORO2=2|AT+DI2TORO2=2 41 41 41 + 42 42 == **2.2 Point To Mult-Point ** == 43 43 44 44 ... ... @@ -47,89 +47,99 @@ 47 47 48 48 [[image:image-20220602111219-3.png]] 49 49 50 +((( 50 50 If the sender does not get the ACK reply from the receiver, it will retransmit up to 4 times, each interval is 6 seconds, and the UplinkCounter of the retransmission will not increase. 52 +))) 51 51 52 52 53 53 == **2.3 AT command** == 54 54 55 55 56 -ATZ : 58 +(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 57 57 58 -AT+FDR : Reset Parameters to Factory Default, Keys Reserve 60 +(% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 59 59 60 -AT+FCU : Get or Set the Frame Counter Uplink 62 +(% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 61 61 62 -AT+FCD : Get or Set the Frame Counter Downlink 64 +(% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 63 63 64 -AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 66 +(% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 65 65 66 -AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 68 +(% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 67 67 68 -AT+PMB : Get or Set the preamble (default:8) 70 +(% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 69 69 70 -AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000) 72 +(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 71 71 72 -AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12) 74 +(% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 73 73 74 -AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000) 76 +(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 75 75 76 -AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12) 78 +(% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 77 77 78 -AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 80 +(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 79 79 80 -AT+CR : Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1) 82 +(% style="color:#037691" %)**AT+CR **(%%)**: **Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1) 81 81 82 -AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes) 84 +(% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 83 83 84 -AT+VER : Get firmware version number 86 +(% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 85 85 86 -AT+SEND : Set Custom sent hex data 88 +(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 87 87 88 -AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0) 90 +(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 89 89 90 -AT+GROUPID : Set or Get the password for matching between TX group and RX group, which can be composed of numbers or characters (default: 12345678) 92 +((( 93 +(% style="color:#037691" %)**AT+GROUPID **(%%)**: **Set or Get the password for matching between TX group and RX group, which can be composed of numbers or characters (default: 12345678) 94 +))) 91 91 92 -AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0) 96 +(% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 93 93 94 -AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0) 98 +(% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 95 95 96 -AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0) 100 +(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 97 97 98 -AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0) 102 +(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 99 99 100 -AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0) 104 +(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 101 101 102 -AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0) 106 +(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 103 103 104 104 105 105 106 -**Example1:** AT+SEND=01020304 will send a payload of 01020304110 +(% style="color:#4f81bd" %)**Example 1:** 107 107 112 +**AT+SEND=01020304 **will send a payload of 01020304 108 108 109 -i.g. AT+TRIGx=a Trigger directly without triggering time 110 110 111 - AT+TRIGx=a,b=0, fallingedge;115 +(% style="color:#4f81bd" %)**Example 2: ** 112 112 113 - a=1,rising;117 +**AT+TRIGx=a **Trigger directly without triggering time 114 114 115 - a=2,falling edge or rising edge.119 +**AT+TRIGx=a,b** 116 116 117 - b, triggeringtimein milliseconds121 +a=0: falling edge; 118 118 119 - AT+TRIGx=2,50Falling edge orrising edgetrigger, and the trigger time exceeds 50ms123 +a=1: rising edge; 120 120 125 +a=2: falling edge or rising edge; 121 121 122 -i .g.AT+DI1TODO1=mapsvalue127 +b: triggering time in milliseconds. 123 123 124 - DI1TORO1=mapsvalue129 +AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 125 125 126 -AT+DI2TODO2= maps value 127 127 128 - AT+DI2TORO2=mapsvalue132 +(% style="color:#4f81bd" %)**Example 3: ** 129 129 134 +**AT+DI1TODO1= maps value** 130 130 136 +**AT+DI1TORO1= maps value** 131 131 138 +**AT+DI2TODO2= maps value** 132 132 140 +**AT+DI2TORO2= maps value** 141 + 142 + 133 133 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 134 134 |=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 135 135 |(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action ... ... @@ -145,27 +145,29 @@ 145 145 ))) 146 146 |(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 147 147 148 - i.g.AT+GROUPMOD=0 Settopointto pointmode158 +(% style="color:#4f81bd" %)**Example 4: ** 149 149 150 -AT+GROUPMOD=0 ,aaSet the TX groupthat controlsthe numberofaa (The maximum valueof aais8)160 +**AT+GROUPMOD=0** Set to point to point mode 151 151 152 -AT+GROUPMOD= 1,bbo theRX group controlledbytheTX group,numberedbb(The maximum value of aa is 8)162 +**AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 153 153 164 +((( 165 +**AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 166 +))) 154 154 155 -AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups 168 +**AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 156 156 157 -AT+GROUPMOD=1,1 Set the RX group numbered 1 170 +**AT+GROUPMOD=1,1** Set the RX group numbered 1 158 158 159 -AT+GROUPMOD=1,2 Set the RX group numbered 2 172 +**AT+GROUPMOD=1,2** Set the RX group numbered 2 160 160 161 161 162 - 163 163 == **2.4 Data Format** == 164 164 165 165 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 166 166 167 167 168 -**Payload:** 180 +(% style="color:#4f81bd" %)**Payload:** 169 169 170 170 (% border="1" style="background-color:#f7faff; color:black; width:938px" %) 171 171 |=(% style="width: 123px;" %)**Size (bytes)**|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1 ... ... @@ -185,15 +185,19 @@ 185 185 186 186 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 187 187 200 +((( 188 188 (% style="color:#037691" %)**The fourth byte**(%%)**:** the high four bits are 1 to represent DI1, and the low four bits are the level of DI1 when the interrupt is triggered. 202 +))) 189 189 190 -(% style="color:#037691" %)**The Fifth byte**(%%)**: 204 +(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 191 191 192 192 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 193 193 208 +((( 194 194 (% style="color:#037691" %)**The seventh byte**(%%)**:** the high four bits are 2 to represent DI2, and the low four bits are the level of DI2 when the interrupt is triggered. 210 +))) 195 195 196 -(% style="color:#037691" %)**The 8th byte**(%%)**: 212 +(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 197 197 198 198 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 199 199