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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... ... @@ -19,13 +19,14 @@ 19 19 20 20 == **2.1 Point To Point** == 21 21 22 +=== **2.1.1 Overview** === 22 22 23 23 [[image:image-20220602111219-1.png||height="472" width="972"]] 24 24 25 25 26 -(% class="wikigeneratedid" id="H2.2.Configure" %) 27 -(% style="color:blue" %)**Configure:** 27 +=== **2.2.2 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 ... ... @@ -39,170 +39,455 @@ 39 39 |AT+DI2TORO2=2|AT+DI2TORO2=2 40 40 41 41 42 -== **2.2 Point To Mult-Point ** == 43 43 44 +=== **2.2.3 Serial port display** === 44 44 46 + 47 +(% class="wikigeneratedid" %) 45 45 [[image:image-20220602111219-2.png]] 46 46 47 47 51 +(% class="wikigeneratedid" %) 48 48 [[image:image-20220602111219-3.png]] 49 49 50 -( ((54 +(% class="wikigeneratedid" %) 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. 56 + 57 + 58 +== **2.2 Point To Mult-Point ** == 59 + 60 +=== **2.2.1 Overview** === 61 + 62 + 63 +[[image:1654152390874-192.png]] 64 + 65 + 66 +=== **2.2.2 Configure** === 67 + 68 + 69 +(% style="color:#4f81bd" %)**Configuration of the TX group:** 70 + 71 +AT+GROUPMOD=0,2 72 + 73 +AT+TXCHS=868700000 74 + 75 +AT+RXCHS=869000000 76 + 77 +AT+TRIG1=2,50 78 + 79 +AT+TRIG2=2,50 80 + 81 +AT+DI1TODO1=1 82 + 83 +AT+DI1TORO1=1 84 + 85 +AT+DI2TODO2=1 86 + 87 +AT+DI2TORO2=1 88 + 89 + 90 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:** 91 + 92 +AT+GROUPMOD=1,1 93 + 94 +AT+TXCHS=869000000 95 + 96 +AT+RXCHS=868700000 97 + 98 + 99 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:** 100 + 101 +AT+GROUPMOD=1,2 102 + 103 +AT+TXCHS=869000000 104 + 105 +AT+RXCHS=868700000 106 + 107 + 108 +=== **2.2.3 Serial port display** === 109 + 110 + 111 +[[image:image-20220602144747-1.png]] 112 + 113 + 114 +[[image:image-20220602144747-2.png]] 115 + 116 +((( 117 +If the TX group does not receive all the ACK replies from the RX group, it will retransmit up to 4 times, each time interval is 30 seconds, and the retransmission UplinkCounter will not increase. 52 52 ))) 53 53 54 54 121 + 122 + 55 55 == **2.3 AT command** == 56 56 57 57 126 +((( 58 58 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 128 +))) 59 59 130 +((( 60 60 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 132 +))) 61 61 134 +((( 62 62 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 136 +))) 63 63 138 +((( 64 64 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 140 +))) 65 65 142 +((( 66 66 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 144 +))) 67 67 146 +((( 68 68 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 148 +))) 69 69 150 +((( 70 70 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 152 +))) 71 71 154 +((( 72 72 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 156 +))) 73 73 158 +((( 74 74 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 160 +))) 75 75 162 +((( 76 76 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 164 +))) 77 77 166 +((( 78 78 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 168 +))) 79 79 80 -(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 170 +((( 171 +(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 172 +))) 81 81 174 +((( 82 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) 176 +))) 83 83 178 +((( 84 84 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 180 +))) 85 85 182 +((( 86 86 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 184 +))) 87 87 88 -(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 186 +((( 187 +(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 188 +))) 89 89 190 +((( 90 90 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 192 +))) 91 91 194 +((( 195 +((( 92 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) 197 +))) 198 +))) 93 93 200 +((( 94 94 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 202 +))) 95 95 204 +((( 96 96 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 206 +))) 97 97 208 +((( 98 98 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 210 +))) 99 99 212 +((( 100 100 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 214 +))) 101 101 216 +((( 102 102 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 218 +))) 103 103 220 +((( 104 104 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 222 +))) 105 105 224 +((( 225 + 226 +))) 106 106 228 +((( 229 + 230 +))) 107 107 232 +((( 108 108 (% style="color:#4f81bd" %)**Example 1:** 234 +))) 109 109 236 +((( 110 110 **AT+SEND=01020304 **will send a payload of 01020304 238 +))) 111 111 240 +((( 241 + 242 +))) 112 112 244 +((( 113 113 (% style="color:#4f81bd" %)**Example 2: ** 246 +))) 114 114 248 +((( 115 115 **AT+TRIGx=a **Trigger directly without triggering time 250 +))) 116 116 252 +((( 117 117 **AT+TRIGx=a,b** 254 +))) 118 118 256 +((( 119 119 a=0: falling edge; 258 +))) 120 120 260 +((( 121 121 a=1: rising edge; 262 +))) 122 122 264 +((( 123 123 a=2: falling edge or rising edge; 266 +))) 124 124 268 +((( 125 125 b: triggering time in milliseconds. 270 +))) 126 126 272 +((( 127 127 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 274 +))) 128 128 276 +((( 277 + 278 +))) 129 129 280 +((( 130 130 (% style="color:#4f81bd" %)**Example 3: ** 282 +))) 131 131 284 +((( 132 132 **AT+DI1TODO1= maps value** 286 +))) 133 133 288 +((( 134 134 **AT+DI1TORO1= maps value** 290 +))) 135 135 292 +((( 136 136 **AT+DI2TODO2= maps value** 294 +))) 137 137 296 +((( 138 138 **AT+DI2TORO2= maps value** 298 +))) 139 139 300 +((( 301 + 302 +))) 140 140 141 141 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 142 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 143 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 144 -|(% 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" %)((( 305 +|=(% style="width: 102px;" %)((( 306 +Maps value 307 +)))|=(% style="width: 331px;" %)((( 308 +DIx to DOx 309 +)))|=(% style="width: 268px;" %)((( 310 +DIx to ROx 311 +))) 312 +|(% style="width:102px" %)((( 313 +0 314 +)))|(% style="width:331px" %)((( 315 +No Action 316 +)))|(% style="width:268px" %)((( 317 +No Action 318 +))) 319 +|(% style="width:102px" %)((( 320 +1 321 +)))|(% style="width:331px" %)((( 322 +If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 323 +)))|(% style="width:268px" %)((( 324 +((( 145 145 If DIx is high, control ROx to close, 326 +))) 146 146 328 +((( 147 147 if DIx is low, control ROx to open 148 148 ))) 149 -|(% style="width:102px" %)2|(% style="width:331px" %)If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(% style="width:268px" %)((( 331 +))) 332 +|(% style="width:102px" %)((( 333 +2 334 +)))|(% style="width:331px" %)((( 335 +If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 336 +)))|(% style="width:268px" %)((( 337 +((( 150 150 If DIx is high, control ROx to open, 339 +))) 151 151 341 +((( 152 152 if DIx is low, control ROx to close 153 153 ))) 154 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 344 +))) 345 +|(% style="width:102px" %)((( 346 +3 347 +)))|(% style="width:331px" %)((( 348 +DOx state flip 349 +)))|(% style="width:268px" %)((( 350 +ROx state flip 351 +))) 155 155 353 +((( 156 156 (% style="color:#4f81bd" %)**Example 4: ** 355 +))) 157 157 357 +((( 158 158 **AT+GROUPMOD=0** Set to point to point mode 359 +))) 159 159 361 +((( 160 160 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 363 +))) 161 161 365 +((( 366 +((( 162 162 **AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 368 +))) 369 +))) 163 163 371 +((( 164 164 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 373 +))) 165 165 375 +((( 166 166 **AT+GROUPMOD=1,1** Set the RX group numbered 1 377 +))) 167 167 379 +((( 168 168 **AT+GROUPMOD=1,2** Set the RX group numbered 2 381 +))) 169 169 170 170 171 171 == **2.4 Data Format** == 172 172 386 +((( 173 173 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 388 +))) 174 174 390 +((( 391 + 392 +))) 175 175 394 +((( 176 176 (% style="color:#4f81bd" %)**Payload:** 396 +))) 177 177 178 178 (% 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" %)((( 399 +|=(% style="width: 123px;" %)((( 400 +**Size (bytes)** 401 +)))|=(% style="width: 107px;" %)((( 402 +1 403 +)))|=(% style="width: 107px;" %)((( 404 +1 405 +)))|=(% style="width: 107px;" %)((( 406 +1 407 +)))|=(% style="width: 107px;" %)((( 408 +1 409 +)))|=(% style="width: 107px;" %)((( 410 +1 411 +)))|=(% style="width: 107px;" %)((( 412 +1 413 +)))|=(% style="width: 107px;" %)((( 414 +1 415 +)))|=(% style="width: 107px;" %)((( 416 +1 417 +)))|=(% style="width: 107px;" %)((( 418 +1 419 +))) 420 +|(% style="width:123px" %)((( 421 +**Value** 422 +)))|(% style="width:38px" %)((( 423 +address 424 +)))|(% style="width:70px" %)((( 425 +request 426 +)))|(% style="width:52px" %)((( 427 +ACK 428 +)))|(% style="width:127px" %)((( 429 +((( 181 181 DI1& 431 +))) 182 182 433 +((( 183 183 DI1 level 184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 435 +))) 436 +)))|(% style="width:101px" %)((( 437 +DI1TODO1 438 +)))|(% style="width:91px" %)((( 439 +DI1TORO1 440 +)))|(% style="width:111px" %)((( 441 +((( 185 185 DI2& 443 +))) 186 186 445 +((( 187 187 DI2 level 188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 447 +))) 448 +)))|(% style="width:105px" %)((( 449 +DI2TODO2 450 +)))|(% style="width:106px" %)((( 451 +DI2TORO2 452 +))) 189 189 454 +((( 190 190 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 456 +))) 191 191 458 +((( 192 192 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 460 +))) 193 193 462 +((( 194 194 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 464 +))) 195 195 466 +((( 467 +((( 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. 469 +))) 470 +))) 197 197 472 +((( 198 198 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 474 +))) 199 199 476 +((( 200 200 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 478 +))) 201 201 480 +((( 481 +((( 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. 483 +))) 484 +))) 203 203 486 +((( 204 204 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 488 +))) 205 205 490 +((( 206 206 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 492 +))) 207 207 208 208
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