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 +19,15 @@ 19 19 20 20 == **2.1 Point To Point** == 21 21 22 +=== **2.1.1 Overview** === 22 22 24 + 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:** 28 +=== **2.2.2 Configure** === 28 28 30 + 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 45 +=== **2.2.3 Serial port display** === 44 44 47 + 48 +(% class="wikigeneratedid" %) 45 45 [[image:image-20220602111219-2.png]] 46 46 47 47 52 +(% class="wikigeneratedid" %) 48 48 [[image:image-20220602111219-3.png]] 49 49 50 -( ((55 +(% 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. 57 + 58 + 59 +== **2.2 Point To Mult-Point ** == 60 + 61 +=== **2.2.1 Overview** === 62 + 63 + 64 +[[image:1654152390874-192.png]] 65 + 66 + 67 +=== **2.2.2 Configure** === 68 + 69 + 70 +(% style="color:#4f81bd" %)**Configuration of the TX group:** 71 + 72 +AT+GROUPMOD=0,2 73 + 74 +AT+TXCHS=868700000 75 + 76 +AT+RXCHS=869000000 77 + 78 +AT+TRIG1=2,50 79 + 80 +AT+TRIG2=2,50 81 + 82 +AT+DI1TODO1=1 83 + 84 +AT+DI1TORO1=1 85 + 86 +AT+DI2TODO2=1 87 + 88 +AT+DI2TORO2=1 89 + 90 + 91 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:** 92 + 93 +AT+GROUPMOD=1,1 94 + 95 +AT+TXCHS=869000000 96 + 97 +AT+RXCHS=868700000 98 + 99 + 100 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:** 101 + 102 +AT+GROUPMOD=1,2 103 + 104 +AT+TXCHS=869000000 105 + 106 +AT+RXCHS=868700000 107 + 108 + 109 +=== **2.2.3 Serial port display** === 110 + 111 + 112 +[[image:image-20220602144747-1.png]] 113 + 114 + 115 +[[image:image-20220602144747-2.png]] 116 + 117 +((( 118 +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 54 122 + 123 + 55 55 == **2.3 AT command** == 56 56 57 57 127 +((( 58 58 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 129 +))) 59 59 131 +((( 60 60 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 133 +))) 61 61 135 +((( 62 62 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 137 +))) 63 63 139 +((( 64 64 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 141 +))) 65 65 143 +((( 66 66 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 145 +))) 67 67 147 +((( 68 68 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 149 +))) 69 69 151 +((( 70 70 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 153 +))) 71 71 155 +((( 72 72 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 157 +))) 73 73 159 +((( 74 74 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 161 +))) 75 75 163 +((( 76 76 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 165 +))) 77 77 167 +((( 78 78 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 169 +))) 79 79 80 -(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 171 +((( 172 +(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 173 +))) 81 81 175 +((( 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) 177 +))) 83 83 179 +((( 84 84 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 181 +))) 85 85 183 +((( 86 86 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 185 +))) 87 87 88 -(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 187 +((( 188 +(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 189 +))) 89 89 191 +((( 90 90 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 193 +))) 91 91 195 +((( 196 +((( 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) 198 +))) 199 +))) 93 93 201 +((( 94 94 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 203 +))) 95 95 205 +((( 96 96 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 207 +))) 97 97 209 +((( 98 98 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 211 +))) 99 99 213 +((( 100 100 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 215 +))) 101 101 217 +((( 102 102 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 219 +))) 103 103 221 +((( 104 104 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 223 +))) 105 105 225 +((( 226 + 227 +))) 106 106 229 +((( 230 + 231 +))) 107 107 233 +((( 108 108 (% style="color:#4f81bd" %)**Example 1:** 235 +))) 109 109 237 +((( 110 110 **AT+SEND=01020304 **will send a payload of 01020304 239 +))) 111 111 241 +((( 242 + 243 +))) 112 112 245 +((( 113 113 (% style="color:#4f81bd" %)**Example 2: ** 247 +))) 114 114 249 +((( 115 115 **AT+TRIGx=a **Trigger directly without triggering time 251 +))) 116 116 253 +((( 117 117 **AT+TRIGx=a,b** 255 +))) 118 118 257 +((( 119 119 a=0: falling edge; 259 +))) 120 120 261 +((( 121 121 a=1: rising edge; 263 +))) 122 122 265 +((( 123 123 a=2: falling edge or rising edge; 267 +))) 124 124 269 +((( 125 125 b: triggering time in milliseconds. 271 +))) 126 126 273 +((( 127 127 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 275 +))) 128 128 277 +((( 278 + 279 +))) 129 129 281 +((( 130 130 (% style="color:#4f81bd" %)**Example 3: ** 283 +))) 131 131 285 +((( 132 132 **AT+DI1TODO1= maps value** 287 +))) 133 133 289 +((( 134 134 **AT+DI1TORO1= maps value** 291 +))) 135 135 293 +((( 136 136 **AT+DI2TODO2= maps value** 295 +))) 137 137 297 +((( 138 138 **AT+DI2TORO2= maps value** 299 +))) 139 139 301 +((( 302 + 303 +))) 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" %)((( 306 +|=(% style="width: 102px;" %)((( 307 +Maps value 308 +)))|=(% style="width: 331px;" %)((( 309 +DIx to DOx 310 +)))|=(% style="width: 268px;" %)((( 311 +DIx to ROx 312 +))) 313 +|(% style="width:102px" %)((( 314 +0 315 +)))|(% style="width:331px" %)((( 316 +No Action 317 +)))|(% style="width:268px" %)((( 318 +No Action 319 +))) 320 +|(% style="width:102px" %)((( 321 +1 322 +)))|(% style="width:331px" %)((( 323 +If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 324 +)))|(% style="width:268px" %)((( 325 +((( 145 145 If DIx is high, control ROx to close, 327 +))) 146 146 329 +((( 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" %)((( 332 +))) 333 +|(% style="width:102px" %)((( 334 +2 335 +)))|(% style="width:331px" %)((( 336 +If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 337 +)))|(% style="width:268px" %)((( 338 +((( 150 150 If DIx is high, control ROx to open, 340 +))) 151 151 342 +((( 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 345 +))) 346 +|(% style="width:102px" %)((( 347 +3 348 +)))|(% style="width:331px" %)((( 349 +DOx state flip 350 +)))|(% style="width:268px" %)((( 351 +ROx state flip 352 +))) 155 155 354 +((( 156 156 (% style="color:#4f81bd" %)**Example 4: ** 356 +))) 157 157 358 +((( 158 158 **AT+GROUPMOD=0** Set to point to point mode 360 +))) 159 159 362 +((( 160 160 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 364 +))) 161 161 366 +((( 367 +((( 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) 369 +))) 370 +))) 163 163 372 +((( 164 164 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 374 +))) 165 165 376 +((( 166 166 **AT+GROUPMOD=1,1** Set the RX group numbered 1 378 +))) 167 167 380 +((( 168 168 **AT+GROUPMOD=1,2** Set the RX group numbered 2 382 +))) 169 169 170 170 171 171 == **2.4 Data Format** == 172 172 387 +((( 173 173 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 389 +))) 174 174 391 +((( 392 + 393 +))) 175 175 395 +((( 176 176 (% style="color:#4f81bd" %)**Payload:** 397 +))) 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" %)((( 400 +|=(% style="width: 123px;" %)((( 401 +**Size (bytes)** 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 +)))|=(% style="width: 107px;" %)((( 419 +1 420 +))) 421 +|(% style="width:123px" %)((( 422 +**Value** 423 +)))|(% style="width:38px" %)((( 424 +address 425 +)))|(% style="width:70px" %)((( 426 +request 427 +)))|(% style="width:52px" %)((( 428 +ACK 429 +)))|(% style="width:127px" %)((( 430 +((( 181 181 DI1& 432 +))) 182 182 434 +((( 183 183 DI1 level 184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 436 +))) 437 +)))|(% style="width:101px" %)((( 438 +DI1TODO1 439 +)))|(% style="width:91px" %)((( 440 +DI1TORO1 441 +)))|(% style="width:111px" %)((( 442 +((( 185 185 DI2& 444 +))) 186 186 446 +((( 187 187 DI2 level 188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 448 +))) 449 +)))|(% style="width:105px" %)((( 450 +DI2TODO2 451 +)))|(% style="width:106px" %)((( 452 +DI2TORO2 453 +))) 189 189 455 +((( 190 190 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 457 +))) 191 191 459 +((( 192 192 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 461 +))) 193 193 463 +((( 194 194 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 465 +))) 195 195 467 +((( 468 +((( 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. 470 +))) 471 +))) 197 197 473 +((( 198 198 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 475 +))) 199 199 477 +((( 200 200 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 479 +))) 201 201 481 +((( 482 +((( 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. 484 +))) 485 +))) 203 203 487 +((( 204 204 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 489 +))) 205 205 491 +((( 206 206 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 493 +))) 207 207 208 208
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