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 ... ... @@ -38,178 +38,456 @@ 38 38 |AT+DI2TODO2=2 |AT+DI2TODO2=2 39 39 |AT+DI2TORO2=2|AT+DI2TORO2=2 40 40 41 -== **2.2 Point To Mult-Point ** == 42 42 43 43 45 +=== **2.2.3 Serial port display** === 46 + 47 + 48 +(% class="wikigeneratedid" %) 44 44 [[image:image-20220602111219-2.png]] 45 45 46 46 52 +(% class="wikigeneratedid" %) 47 47 [[image:image-20220602111219-3.png]] 48 48 49 -( ((55 +(% class="wikigeneratedid" %) 50 50 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. 51 51 ))) 52 52 53 53 122 + 123 + 54 54 == **2.3 AT command** == 55 55 56 56 127 +((( 57 57 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 129 +))) 58 58 131 +((( 59 59 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 133 +))) 60 60 135 +((( 61 61 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 137 +))) 62 62 139 +((( 63 63 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 141 +))) 64 64 143 +((( 65 65 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 145 +))) 66 66 147 +((( 67 67 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 149 +))) 68 68 151 +((( 69 69 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 153 +))) 70 70 155 +((( 71 71 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 157 +))) 72 72 159 +((( 73 73 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 161 +))) 74 74 163 +((( 75 75 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 165 +))) 76 76 167 +((( 77 77 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 169 +))) 78 78 171 +((( 79 79 (% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 173 +))) 80 80 175 +((( 81 81 (% 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 +))) 82 82 179 +((( 83 83 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 181 +))) 84 84 183 +((( 85 85 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 185 +))) 86 86 187 +((( 87 87 (% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 189 +))) 88 88 191 +((( 89 89 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 193 +))) 90 90 91 91 ((( 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) 93 93 ))) 199 +))) 94 94 201 +((( 95 95 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 203 +))) 96 96 205 +((( 97 97 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 207 +))) 98 98 209 +((( 99 99 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 211 +))) 100 100 213 +((( 101 101 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 215 +))) 102 102 217 +((( 103 103 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 219 +))) 104 104 221 +((( 105 105 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 223 +))) 106 106 225 +((( 226 + 227 +))) 107 107 229 +((( 230 + 231 +))) 108 108 233 +((( 109 109 (% style="color:#4f81bd" %)**Example 1:** 235 +))) 110 110 237 +((( 111 111 **AT+SEND=01020304 **will send a payload of 01020304 239 +))) 112 112 241 +((( 242 + 243 +))) 113 113 245 +((( 114 114 (% style="color:#4f81bd" %)**Example 2: ** 247 +))) 115 115 249 +((( 116 116 **AT+TRIGx=a **Trigger directly without triggering time 251 +))) 117 117 253 +((( 118 118 **AT+TRIGx=a,b** 255 +))) 119 119 257 +((( 120 120 a=0: falling edge; 259 +))) 121 121 261 +((( 122 122 a=1: rising edge; 263 +))) 123 123 265 +((( 124 124 a=2: falling edge or rising edge; 267 +))) 125 125 269 +((( 126 126 b: triggering time in milliseconds. 271 +))) 127 127 273 +((( 128 128 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 275 +))) 129 129 277 +((( 278 + 279 +))) 130 130 281 +((( 131 131 (% style="color:#4f81bd" %)**Example 3: ** 283 +))) 132 132 285 +((( 133 133 **AT+DI1TODO1= maps value** 287 +))) 134 134 289 +((( 135 135 **AT+DI1TORO1= maps value** 291 +))) 136 136 293 +((( 137 137 **AT+DI2TODO2= maps value** 295 +))) 138 138 297 +((( 139 139 **AT+DI2TORO2= maps value** 299 +))) 140 140 301 +((( 302 + 303 +))) 141 141 142 142 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 143 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 144 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 145 -|(% 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 +((( 146 146 If DIx is high, control ROx to close, 327 +))) 147 147 329 +((( 148 148 if DIx is low, control ROx to open 149 149 ))) 150 -|(% 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 +((( 151 151 If DIx is high, control ROx to open, 340 +))) 152 152 342 +((( 153 153 if DIx is low, control ROx to close 154 154 ))) 155 -|(% 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 +))) 156 156 354 +((( 157 157 (% style="color:#4f81bd" %)**Example 4: ** 356 +))) 158 158 358 +((( 159 159 **AT+GROUPMOD=0** Set to point to point mode 360 +))) 160 160 362 +((( 161 161 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 364 +))) 162 162 163 163 ((( 367 +((( 164 164 **AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 165 165 ))) 370 +))) 166 166 372 +((( 167 167 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 374 +))) 168 168 376 +((( 169 169 **AT+GROUPMOD=1,1** Set the RX group numbered 1 378 +))) 170 170 380 +((( 171 171 **AT+GROUPMOD=1,2** Set the RX group numbered 2 382 +))) 172 172 173 173 174 174 == **2.4 Data Format** == 175 175 387 +((( 176 176 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 389 +))) 177 177 391 +((( 392 + 393 +))) 178 178 395 +((( 179 179 (% style="color:#4f81bd" %)**Payload:** 397 +))) 180 180 181 181 (% border="1" style="background-color:#f7faff; color:black; width:938px" %) 182 -|=(% 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;" %)1 183 -|(% 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 +((( 184 184 DI1& 432 +))) 185 185 434 +((( 186 186 DI1 level 187 -)))|(% 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 +((( 188 188 DI2& 444 +))) 189 189 446 +((( 190 190 DI2 level 191 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 448 +))) 449 +)))|(% style="width:105px" %)((( 450 +DI2TODO2 451 +)))|(% style="width:106px" %)((( 452 +DI2TORO2 453 +))) 192 192 455 +((( 193 193 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 457 +))) 194 194 459 +((( 195 195 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 461 +))) 196 196 463 +((( 197 197 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 465 +))) 198 198 199 199 ((( 468 +((( 200 200 (% 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. 201 201 ))) 471 +))) 202 202 473 +((( 203 203 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 475 +))) 204 204 477 +((( 205 205 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 479 +))) 206 206 207 207 ((( 482 +((( 208 208 (% 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. 209 209 ))) 485 +))) 210 210 487 +((( 211 211 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 489 +))) 212 212 491 +((( 213 213 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 493 +))) 214 214 215 215
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