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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... ... @@ -39,6 +39,8 @@ 39 39 |AT+DI2TODO2=2 |AT+DI2TODO2=2 40 40 |AT+DI2TORO2=2|AT+DI2TORO2=2 41 41 42 + 43 + 42 42 == **2.2 Point To Mult-Point ** == 43 43 44 44 ... ... @@ -53,91 +53,85 @@ 53 53 == **2.3 AT command** == 54 54 55 55 56 - (% style="color:#037691" %)**ATZ**(%%)**:**58 +ATZ : Trig a reset of the MCU 57 57 58 - (% style="color:#037691" %)**AT+FDR**(%%)**:**60 +AT+FDR : Reset Parameters to Factory Default, Keys Reserve 59 59 60 - (% style="color:#037691" %)**AT+FCU**(%%)**:**62 +AT+FCU : Get or Set the Frame Counter Uplink 61 61 62 - (% style="color:#037691" %)**AT+FCD**(%%)**:**64 +AT+FCD : Get or Set the Frame Counter Downlink 63 63 64 - (% style="color:#037691" %)**AT+TXP**(%%)**:**66 +AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 65 65 66 - (% style="color:#037691" %)**AT+SYNC**(%%)**:**68 +AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 67 67 68 - (% style="color:#037691" %)**AT+PMB**(%%)**:**Get or Set the preamble (default:8)70 +AT+PMB : Get or Set the preamble (default:8) 69 69 70 - (% style="color:#037691" %)**AT+TXCHS**(%%)**:**Get or Set the transmit frequency of TX (default:868700000)72 +AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000) 71 71 72 - (% style="color:#037691" %)**AT+TXSF**(%%)**:**74 +AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12) 73 73 74 - (% style="color:#037691" %)**AT+RXCHS**(%%)**:**Get or Set the transmit frequency of RX (default:869000000)76 +AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000) 75 75 76 - (% style="color:#037691" %)**AT+RXSF**(%%)**:**78 +AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12) 77 77 78 - (% style="color:#037691" %)**AT+BW**(%%)**:**Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)80 +AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 79 79 80 - (% 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)82 +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 - (% style="color:#037691" %)**AT+TDC**(%%)**:**84 +AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes) 83 83 84 - (% style="color:#037691" %)**AT+VER**(%%)**:**86 +AT+VER : Get firmware version number 85 85 86 - (% style="color:#037691" %)**AT+SEND**(%%)**:**Set Custom sent hex data88 +AT+SEND : Set Custom sent hex data 87 87 88 - (% style="color:#037691" %)**AT+GROUPMOD**(%%)**:**Set or Get the grouping mode of the device (default: 0)90 +AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0) 89 89 90 - (% 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)92 +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) 91 91 92 - (% style="color:#037691" %)**AT+TRIG1**(%%)**:**94 +AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0) 93 93 94 - (% style="color:#037691" %)**AT+TRIG2**(%%)**:**Set or Get the DI2 pin interrupt trigger mode (default 0,0)96 +AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0) 95 95 96 - (% style="color:#037691" %)**AT+DI1TODO1**(%%)**:**Set or get the mode in which DI1 maps to DO1 (default 0)98 +AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0) 97 97 98 - (% style="color:#037691" %)**AT+DI1TORO1**(%%)**:**Set or get the mode in which DI1 maps to RO1(default 0)100 +AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0) 99 99 100 - (% style="color:#037691" %)**AT+DI2TODO2**(%%)**:**102 +AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0) 101 101 102 - (% style="color:#037691" %)**AT+DI2TORO2**(%%)**:**Set or get the mode in which DI2 maps to RO2(default 0)104 +AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0) 103 103 104 104 105 105 106 - (% style="color:#4f81bd" %)**Example108 +**Example1:** AT+SEND=01020304 will send a payload of 01020304 107 107 108 -**AT+SEND=01020304 **will send a payload of 01020304 109 109 111 +i.g. AT+TRIGx=a Trigger directly without triggering time 110 110 111 - (% style="color:#4f81bd"%)**Example2: **113 +AT+TRIGx=a,b a=0, falling edge; 112 112 113 - **AT+TRIGx=a**Trigger directly without triggeringtime115 +a=1, rising edge; 114 114 115 - **AT+TRIGx=a,b**117 + a=2, falling edge or rising edge. 116 116 117 - a=0:falling edge;119 + b, triggering time in milliseconds 118 118 119 - a=1:rising edge;121 + AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms 120 120 121 -a=2: falling edge or rising edge; 122 122 123 - b: triggeringtimeinmilliseconds.124 +i.g. AT+DI1TODO1= maps value 124 124 125 -AT+TR IGx=2,50Falling edge or risingedge trigger,and thetrigger time exceeds 50ms.126 + AT+DI1TORO1= maps value 126 126 128 +AT+DI2TODO2= maps value 127 127 128 - (% style="color:#4f81bd"%)**Example3: **130 +AT+DI2TORO2= maps value 129 129 130 -**AT+DI1TODO1= maps value** 131 131 132 -**AT+DI1TORO1= maps value** 133 133 134 -**AT+DI2TODO2= maps value** 135 135 136 -**AT+DI2TORO2= maps value** 137 - 138 - 139 -(% border="1" style="background-color:#f7faff; color:black; width:706px" %) 140 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 135 +(% style="width:706px" %) 136 +|(% style="width:102px" %)Maps value|(% style="width:331px" %)DIx to DOx|(% style="width:268px" %)DIx to ROx 141 141 |(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 142 142 |(% style="width:102px" %)1|(% style="width:331px" %)If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(% style="width:268px" %)((( 143 143 If DIx is high, control ROx to close, ... ... @@ -151,58 +151,58 @@ 151 151 ))) 152 152 |(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 153 153 150 +i.g. AT+GROUPMOD=0 Set to point to point mode 154 154 155 - (%style="color:#4f81bd"%)**Example4:**152 +AT+GROUPMOD=0,aa Set the TX group that controls the number of aa (The maximum value of aa is 8) 156 156 157 - **AT+GROUPMOD=0**int topointmode154 +AT+GROUPMOD=1,bb Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 158 158 159 -**AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 160 160 161 - **AT+GROUPMOD=1,bb**Set tothe RX groupcontrolledbythe TX group,numberedbb(Themaximum valueofaais8)157 +AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups 162 162 163 - **AT+GROUPMOD=0,2**o control theTX groupof thetwo RX groups159 +AT+GROUPMOD=1,1 Set the RX group numbered 1 164 164 165 - **AT+GROUPMOD=1,1**1161 +AT+GROUPMOD=1,2 Set the RX group numbered 2 166 166 167 -**AT+GROUPMOD=1,2** Set the RX group numbered 2 168 168 169 169 170 - 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 - **Payload:**170 +Payload: 177 177 178 -(% border="1" style="background-color:#f7faff; color:black; width:938px" %) 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;" %)1 180 -|(% style="width:123px" %)**Value**|(% style="width:38px" %)address|(% style="width:70px" %)request|(% style="width:52px" %)ACK|(% style="width:127px" %)((( 172 +|**Size (bytes)**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|**1** 173 +|**Value**|(% colspan="2" %)address|(% colspan="2" %)request|(% colspan="2" %)ACK|(% colspan="2" %)((( 181 181 DI1& 182 182 183 183 DI1 level 184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 177 +)))|DI1TODO1 178 +|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %) 179 +|(% colspan="2" %)DI1TORO1|(% colspan="2" %)((( 185 185 DI2& 186 186 187 187 DI2 level 188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 183 +)))|(% colspan="2" %)DI2TODO2|(% colspan="2" %)DI2TORO2|(% colspan="2" %) 184 +| | | | | | | | | | 189 189 190 - (% style="color:#037691" %)**The first byte**(%%)**:**.186 +The first byte: 00 is the broadcast address, 01-08 is the RX group number 191 191 192 - (% style="color:#037691" %)**The second byte**(%%)**:**.188 +The second byte: send mapping request when not 0, not request when it is 0 193 193 194 - (% style="color:#037691" %)**The third byte**(%%)**:**.190 +The third byte: ACK returned to the sender after the mapping is completed 195 195 196 - (% style="color:#037691" %)**The fourth byte**(%%)**:**.192 +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**(%%)**:**DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.194 +The Fifth byte: DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered 199 199 200 - (% style="color:#037691" %)**The Sixth byte**(%%)**:**.196 +The Sixth byte: 0 does not trigger interrupt when DI1TORO1 interrupt is triggered 201 201 202 - (% 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.198 +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**(%%)**:**DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.200 +The 8th byte: DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered 205 205 206 - (% style="color:#037691" %)**The 9th byte**(%%)**:**.202 +The 9th byte: DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered 207 207 208 208