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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... ... @@ -26,6 +26,7 @@ 26 26 (% class="wikigeneratedid" id="H2.2.Configure" %) 27 27 (% style="color:blue" %)**Configure:** 28 28 29 + 29 29 (% border="1" style="background-color:#f7faff; color:black; width:500px" %) 30 30 |=**A's configuration**|=**B's configuration** 31 31 |AT+GROUPMOD=0|AT+GROUPMOD=0 ... ... @@ -38,7 +38,6 @@ 38 38 |AT+DI2TODO2=2 |AT+DI2TODO2=2 39 39 |AT+DI2TORO2=2|AT+DI2TORO2=2 40 40 41 - 42 42 == **2.2 Point To Mult-Point ** == 43 43 44 44 ... ... @@ -47,97 +47,89 @@ 47 47 48 48 [[image:image-20220602111219-3.png]] 49 49 50 -((( 51 51 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 -))) 53 53 54 54 55 55 == **2.3 AT command** == 56 56 57 57 58 - (% style="color:#037691" %)**ATZ**(%%)**:**56 +ATZ : Trig a reset of the MCU 59 59 60 - (% style="color:#037691" %)**AT+FDR**(%%)**:**58 +AT+FDR : Reset Parameters to Factory Default, Keys Reserve 61 61 62 - (% style="color:#037691" %)**AT+FCU**(%%)**:**60 +AT+FCU : Get or Set the Frame Counter Uplink 63 63 64 - (% style="color:#037691" %)**AT+FCD**(%%)**:**62 +AT+FCD : Get or Set the Frame Counter Downlink 65 65 66 - (% style="color:#037691" %)**AT+TXP**(%%)**:**64 +AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 67 67 68 - (% style="color:#037691" %)**AT+SYNC**(%%)**:**Get or Set the Sync word [1:0x34,0:0x12] (default is 1)66 +AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 69 69 70 - (% style="color:#037691" %)**AT+PMB**(%%)**:**Get or Set the preamble (default:8)68 +AT+PMB : Get or Set the preamble (default:8) 71 71 72 - (% style="color:#037691" %)**AT+TXCHS**(%%)**:**Get or Set the transmit frequency of TX (default:868700000)70 +AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000) 73 73 74 - (% style="color:#037691" %)**AT+TXSF**(%%)**:**72 +AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12) 75 75 76 - (% style="color:#037691" %)**AT+RXCHS**(%%)**:**Get or Set the transmit frequency of RX (default:869000000)74 +AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000) 77 77 78 - (% style="color:#037691" %)**AT+RXSF**(%%)**:**76 +AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12) 79 79 80 - (% style="color:#037691" %)**AT+BW**(%%)**:**Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)78 +AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 81 81 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)80 +AT+CR : Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1) 83 83 84 - (% style="color:#037691" %)**AT+TDC**(%%)**:**82 +AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes) 85 85 86 - (% style="color:#037691" %)**AT+VER**(%%)**:**84 +AT+VER : Get firmware version number 87 87 88 - (% style="color:#037691" %)**AT+SEND**(%%)**:**Set Custom sent hex data86 +AT+SEND : Set Custom sent hex data 89 89 90 - (% style="color:#037691" %)**AT+GROUPMOD**(%%)**:**Set or Get the grouping mode of the device (default: 0)88 +AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0) 91 91 92 - (% 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)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) 93 93 94 - (% style="color:#037691" %)**AT+TRIG1**(%%)**:**92 +AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0) 95 95 96 - (% style="color:#037691" %)**AT+TRIG2**(%%)**:**Set or Get the DI2 pin interrupt trigger mode (default 0,0)94 +AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0) 97 97 98 - (% style="color:#037691" %)**AT+DI1TODO1**(%%)**:**Set or get the mode in which DI1 maps to DO1 (default 0)96 +AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0) 99 99 100 - (% style="color:#037691" %)**AT+DI1TORO1**(%%)**:**Set or get the mode in which DI1 maps to RO1(default 0)98 +AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0) 101 101 102 - (% style="color:#037691" %)**AT+DI2TODO2**(%%)**:**100 +AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0) 103 103 104 - (% style="color:#037691" %)**AT+DI2TORO2**(%%)**:**Set or get the mode in which DI2 maps to RO2(default 0)102 +AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0) 105 105 106 106 107 107 108 - (% style="color:#4f81bd" %)**Example106 +**Example1:** AT+SEND=01020304 will send a payload of 01020304 109 109 110 -**AT+SEND=01020304 **will send a payload of 01020304 111 111 109 +i.g. AT+TRIGx=a Trigger directly without triggering time 112 112 113 - (% style="color:#4f81bd"%)**Example2: **111 +AT+TRIGx=a,b a=0, falling edge; 114 114 115 - **AT+TRIGx=a**Trigger directly without triggeringtime113 +a=1, rising edge; 116 116 117 - **AT+TRIGx=a,b**115 + a=2, falling edge or rising edge. 118 118 119 - a=0:falling edge;117 + b, triggering time in milliseconds 120 120 121 - a=1:rising edge;119 + AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms 122 122 123 -a=2: falling edge or rising edge; 124 124 125 - b: triggeringtimeinmilliseconds.122 +i.g. AT+DI1TODO1= maps value 126 126 127 -AT+TR IGx=2,50Falling edge or risingedge trigger,and thetrigger time exceeds 50ms.124 + AT+DI1TORO1= maps value 128 128 126 +AT+DI2TODO2= maps value 129 129 130 - (% style="color:#4f81bd"%)**Example3: **128 +AT+DI2TORO2= maps value 131 131 132 -**AT+DI1TODO1= maps value** 133 133 134 -**AT+DI1TORO1= maps value** 135 135 136 -**AT+DI2TODO2= maps value** 137 137 138 -**AT+DI2TORO2= maps value** 139 - 140 - 141 141 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 142 142 |=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 143 143 |(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action ... ... @@ -153,27 +153,27 @@ 153 153 ))) 154 154 |(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 155 155 156 - (%style="color:#4f81bd"%)**Example4:**148 +i.g. AT+GROUPMOD=0 Set to point to point mode 157 157 158 - **AT+GROUPMOD=0**opointtopoint mode150 +AT+GROUPMOD=0,aa Set the TX group that controls the number of aa (The maximum value of aa is 8) 159 159 160 - **AT+GROUPMOD=0,aa**Set theTX groupthatcontrolsthe numberof aa(The maximum value of aa is 8)152 +AT+GROUPMOD=1,bb Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 161 161 162 -**AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 163 163 164 - **AT+GROUPMOD=0,2**155 +AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups 165 165 166 - **AT+GROUPMOD=1,1**157 +AT+GROUPMOD=1,1 Set the RX group numbered 1 167 167 168 - **AT+GROUPMOD=1,2**159 +AT+GROUPMOD=1,2 Set the RX group numbered 2 169 169 170 170 162 + 171 171 == **2.4 Data Format** == 172 172 173 173 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 174 174 175 175 176 - (% style="color:#4f81bd" %)**Payload:**168 +**Payload:** 177 177 178 178 (% border="1" style="background-color:#f7faff; color:black; width:938px" %) 179 179 |=(% 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 ... ... @@ -195,13 +195,13 @@ 195 195 196 196 (% 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. 197 197 198 -(% style="color:#037691" %)**The Fifth byte**(%%)**: 190 +(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 199 199 200 200 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 201 201 202 202 (% 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. 203 203 204 -(% style="color:#037691" %)**The 8th byte**(%%)**: 196 +(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 205 205 206 206 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 207 207