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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... ... @@ -19,14 +19,13 @@ 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 - 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 ... ... @@ -41,164 +41,454 @@ 41 41 42 42 43 43 44 -== **2.2 PointToMult-Point** ==43 +=== **2.2.3 Serial port display** === 45 45 46 46 46 +(% class="wikigeneratedid" %) 47 47 [[image:image-20220602111219-2.png]] 48 48 49 49 50 +(% class="wikigeneratedid" %) 50 50 [[image:image-20220602111219-3.png]] 51 51 53 +(% class="wikigeneratedid" %) 52 52 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. 53 53 54 54 57 +== **2.2 Point To Mult-Point ** == 58 + 59 +=== **2.2.1 Overview** === 60 + 61 + 62 +[[image:1654152390874-192.png]] 63 + 64 + 65 +=== **2.2.2 Configure** === 66 + 67 + 68 +(% style="color:#4f81bd" %)**Configuration of the TX group:** 69 + 70 +AT+GROUPMOD=0,2 71 + 72 +AT+TXCHS=868700000 73 + 74 +AT+RXCHS=869000000 75 + 76 +AT+TRIG1=2,50 77 + 78 +AT+TRIG2=2,50 79 + 80 +AT+DI1TODO1=1 81 + 82 +AT+DI1TORO1=1 83 + 84 +AT+DI2TODO2=1 85 + 86 +AT+DI2TORO2=1 87 + 88 + 89 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:** 90 + 91 +AT+GROUPMOD=1,1 92 + 93 +AT+TXCHS=869000000 94 + 95 +AT+RXCHS=868700000 96 + 97 + 98 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:** 99 + 100 +AT+GROUPMOD=1,2 101 + 102 +AT+TXCHS=869000000 103 + 104 +AT+RXCHS=868700000 105 + 106 + 107 +=== **2.2.3 Serial port display** === 108 + 109 + 110 +[[image:image-20220602144747-1.png]] 111 + 112 + 113 +[[image:image-20220602144747-2.png]] 114 + 115 +((( 116 +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. 117 +))) 118 + 119 + 120 + 121 + 55 55 == **2.3 AT command** == 56 56 57 57 58 -ATZ : Trig a reset of the MCU 125 +((( 126 +(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 127 +))) 59 59 60 -AT+FDR : Reset Parameters to Factory Default, Keys Reserve 129 +((( 130 +(% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 131 +))) 61 61 62 -AT+FCU : Get or Set the Frame Counter Uplink 133 +((( 134 +(% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 135 +))) 63 63 64 -AT+FCD : Get or Set the Frame Counter Downlink 137 +((( 138 +(% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 139 +))) 65 65 66 -AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 141 +((( 142 +(% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 143 +))) 67 67 68 -AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 145 +((( 146 +(% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 147 +))) 69 69 70 -AT+PMB : Get or Set the preamble (default:8) 149 +((( 150 +(% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 151 +))) 71 71 72 -AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000) 153 +((( 154 +(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 155 +))) 73 73 74 -AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12) 157 +((( 158 +(% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 159 +))) 75 75 76 -AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000) 161 +((( 162 +(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 163 +))) 77 77 78 -AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12) 165 +((( 166 +(% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 167 +))) 79 79 80 -AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 169 +((( 170 +(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 171 +))) 81 81 82 -AT+CR : Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1) 173 +((( 174 +(% 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) 175 +))) 83 83 84 -AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes) 177 +((( 178 +(% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 179 +))) 85 85 86 -AT+VER : Get firmware version number 181 +((( 182 +(% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 183 +))) 87 87 88 -AT+SEND : Set Custom sent hex data 185 +((( 186 +(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 187 +))) 89 89 90 -AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0) 189 +((( 190 +(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 191 +))) 91 91 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) 193 +((( 194 +((( 195 +(% 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) 196 +))) 197 +))) 93 93 94 -AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0) 199 +((( 200 +(% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 201 +))) 95 95 96 -AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0) 203 +((( 204 +(% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 205 +))) 97 97 98 -AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0) 207 +((( 208 +(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 209 +))) 99 99 100 -AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0) 211 +((( 212 +(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 213 +))) 101 101 102 -AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0) 215 +((( 216 +(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 217 +))) 103 103 104 -AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0) 219 +((( 220 +(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 221 +))) 105 105 223 +((( 224 + 225 +))) 106 106 227 +((( 228 + 229 +))) 107 107 108 -**Example1:** AT+SEND=01020304 will send a payload of 01020304 231 +((( 232 +(% style="color:#4f81bd" %)**Example 1:** 233 +))) 109 109 235 +((( 236 +**AT+SEND=01020304 **will send a payload of 01020304 237 +))) 110 110 111 -i.g. AT+TRIGx=a Trigger directly without triggering time 239 +((( 240 + 241 +))) 112 112 113 -AT+TRIGx=a,b a=0, falling edge; 243 +((( 244 +(% style="color:#4f81bd" %)**Example 2: ** 245 +))) 114 114 115 -a=1, rising edge; 247 +((( 248 +**AT+TRIGx=a **Trigger directly without triggering time 249 +))) 116 116 117 - a=2, falling edge or rising edge. 251 +((( 252 +**AT+TRIGx=a,b** 253 +))) 118 118 119 - b, triggering time in milliseconds 255 +((( 256 +a=0: falling edge; 257 +))) 120 120 121 - AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms 259 +((( 260 +a=1: rising edge; 261 +))) 122 122 263 +((( 264 +a=2: falling edge or rising edge; 265 +))) 123 123 124 -i.g. AT+DI1TODO1= maps value 267 +((( 268 +b: triggering time in milliseconds. 269 +))) 125 125 126 - AT+DI1TORO1= maps value 271 +((( 272 +AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 273 +))) 127 127 128 -AT+DI2TODO2= maps value 275 +((( 276 + 277 +))) 129 129 130 -AT+DI2TORO2= maps value 279 +((( 280 +(% style="color:#4f81bd" %)**Example 3: ** 281 +))) 131 131 283 +((( 284 +**AT+DI1TODO1= maps value** 285 +))) 132 132 287 +((( 288 +**AT+DI1TORO1= maps value** 289 +))) 133 133 291 +((( 292 +**AT+DI2TODO2= maps value** 293 +))) 134 134 135 -(% style="width:706px" %) 136 -|(% style="width:102px" %)Maps value|(% style="width:331px" %)DIx to DOx|(% style="width:268px" %)DIx to ROx 137 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 138 -|(% 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" %)((( 295 +((( 296 +**AT+DI2TORO2= maps value** 297 +))) 298 + 299 +((( 300 + 301 +))) 302 + 303 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %) 304 +|=(% style="width: 102px;" %)((( 305 +Maps value 306 +)))|=(% style="width: 331px;" %)((( 307 +DIx to DOx 308 +)))|=(% style="width: 268px;" %)((( 309 +DIx to ROx 310 +))) 311 +|(% style="width:102px" %)((( 312 +0 313 +)))|(% style="width:331px" %)((( 314 +No Action 315 +)))|(% style="width:268px" %)((( 316 +No Action 317 +))) 318 +|(% style="width:102px" %)((( 319 +1 320 +)))|(% style="width:331px" %)((( 321 +If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 322 +)))|(% style="width:268px" %)((( 323 +((( 139 139 If DIx is high, control ROx to close, 325 +))) 140 140 327 +((( 141 141 if DIx is low, control ROx to open 142 142 ))) 143 -|(% 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" %)((( 330 +))) 331 +|(% style="width:102px" %)((( 332 +2 333 +)))|(% style="width:331px" %)((( 334 +If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 335 +)))|(% style="width:268px" %)((( 336 +((( 144 144 If DIx is high, control ROx to open, 338 +))) 145 145 340 +((( 146 146 if DIx is low, control ROx to close 147 147 ))) 148 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 343 +))) 344 +|(% style="width:102px" %)((( 345 +3 346 +)))|(% style="width:331px" %)((( 347 +DOx state flip 348 +)))|(% style="width:268px" %)((( 349 +ROx state flip 350 +))) 149 149 150 -i.g. AT+GROUPMOD=0 Set to point to point mode 352 +((( 353 +(% style="color:#4f81bd" %)**Example 4: ** 354 +))) 151 151 152 -AT+GROUPMOD=0,aa Set the TX group that controls the number of aa (The maximum value of aa is 8) 356 +((( 357 +**AT+GROUPMOD=0** Set to point to point mode 358 +))) 153 153 154 -AT+GROUPMOD=1,bb Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 360 +((( 361 +**AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 362 +))) 155 155 364 +((( 365 +((( 366 +**AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 367 +))) 368 +))) 156 156 157 -AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups 370 +((( 371 +**AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 372 +))) 158 158 159 -AT+GROUPMOD=1,1 Set the RX group numbered 1 374 +((( 375 +**AT+GROUPMOD=1,1** Set the RX group numbered 1 376 +))) 160 160 161 -AT+GROUPMOD=1,2 Set the RX group numbered 2 378 +((( 379 +**AT+GROUPMOD=1,2** Set the RX group numbered 2 380 +))) 162 162 163 163 164 - 165 165 == **2.4 Data Format** == 166 166 385 +((( 167 167 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 387 +))) 168 168 389 +((( 390 + 391 +))) 169 169 170 -Payload: 393 +((( 394 +(% style="color:#4f81bd" %)**Payload:** 395 +))) 171 171 172 -|**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" %)((( 397 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %) 398 +|=(% style="width: 123px;" %)((( 399 +**Size (bytes)** 400 +)))|=(% style="width: 107px;" %)((( 401 +1 402 +)))|=(% style="width: 107px;" %)((( 403 +1 404 +)))|=(% style="width: 107px;" %)((( 405 +1 406 +)))|=(% style="width: 107px;" %)((( 407 +1 408 +)))|=(% style="width: 107px;" %)((( 409 +1 410 +)))|=(% style="width: 107px;" %)((( 411 +1 412 +)))|=(% style="width: 107px;" %)((( 413 +1 414 +)))|=(% style="width: 107px;" %)((( 415 +1 416 +)))|=(% style="width: 107px;" %)((( 417 +1 418 +))) 419 +|(% style="width:123px" %)((( 420 +**Value** 421 +)))|(% style="width:38px" %)((( 422 +address 423 +)))|(% style="width:70px" %)((( 424 +request 425 +)))|(% style="width:52px" %)((( 426 +ACK 427 +)))|(% style="width:127px" %)((( 428 +((( 174 174 DI1& 430 +))) 175 175 432 +((( 176 176 DI1 level 177 -)))|DI1TODO1 178 -|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %)**1**|(% colspan="2" %) 179 -|(% colspan="2" %)DI1TORO1|(% colspan="2" %)((( 434 +))) 435 +)))|(% style="width:101px" %)((( 436 +DI1TODO1 437 +)))|(% style="width:91px" %)((( 438 +DI1TORO1 439 +)))|(% style="width:111px" %)((( 440 +((( 180 180 DI2& 442 +))) 181 181 444 +((( 182 182 DI2 level 183 -)))|(% colspan="2" %)DI2TODO2|(% colspan="2" %)DI2TORO2|(% colspan="2" %) 184 -| | | | | | | | | | 446 +))) 447 +)))|(% style="width:105px" %)((( 448 +DI2TODO2 449 +)))|(% style="width:106px" %)((( 450 +DI2TORO2 451 +))) 185 185 186 -The first byte: 00 is the broadcast address, 01-08 is the RX group number 453 +((( 454 +(% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 455 +))) 187 187 188 -The second byte: send mapping request when not 0, not request when it is 0 457 +((( 458 +(% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 459 +))) 189 189 190 -The third byte: ACK returned to the sender after the mapping is completed 461 +((( 462 +(% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 463 +))) 191 191 192 -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 465 +((( 466 +((( 467 +(% 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. 468 +))) 469 +))) 193 193 194 -The Fifth byte: DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered 471 +((( 472 +(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 473 +))) 195 195 196 -The Sixth byte: 0 does not trigger interrupt when DI1TORO1 interrupt is triggered 475 +((( 476 +(% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 477 +))) 197 197 198 -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 479 +((( 480 +((( 481 +(% 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. 482 +))) 483 +))) 199 199 200 -The 8th byte: DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered 485 +((( 486 +(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 487 +))) 201 201 202 -The 9th byte: DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered 489 +((( 490 +(% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 491 +))) 203 203 204 204
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