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 ... ... @@ -39,170 +39,456 @@ 39 39 |AT+DI2TODO2=2 |AT+DI2TODO2=2 40 40 |AT+DI2TORO2=2|AT+DI2TORO2=2 41 41 42 -== **2.2 Point To Mult-Point ** == 43 43 44 44 43 +=== **2.2.3 Serial port display** === 44 + 45 + 46 +(% class="wikigeneratedid" %) 45 45 [[image:image-20220602111219-2.png]] 46 46 47 47 50 +(% class="wikigeneratedid" %) 48 48 [[image:image-20220602111219-3.png]] 49 49 53 +(% 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. 51 51 52 52 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 + 53 53 == **2.3 AT command** == 54 54 55 55 125 +((( 56 56 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 127 +))) 57 57 129 +((( 58 58 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 131 +))) 59 59 133 +((( 60 60 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 135 +))) 61 61 137 +((( 62 62 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 139 +))) 63 63 141 +((( 64 64 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 143 +))) 65 65 66 -(% style="color:#037691" %)**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 +))) 67 67 149 +((( 68 68 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 151 +))) 69 69 153 +((( 70 70 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 155 +))) 71 71 157 +((( 72 72 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 159 +))) 73 73 161 +((( 74 74 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 163 +))) 75 75 165 +((( 76 76 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 167 +))) 77 77 169 +((( 78 78 (% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 171 +))) 79 79 173 +((( 80 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) 175 +))) 81 81 177 +((( 82 82 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 179 +))) 83 83 84 -(% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 181 +((( 182 +(% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 183 +))) 85 85 86 -(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 185 +((( 186 +(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 187 +))) 87 87 189 +((( 88 88 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 191 +))) 89 89 193 +((( 194 +((( 90 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) 196 +))) 197 +))) 91 91 199 +((( 92 92 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 201 +))) 93 93 203 +((( 94 94 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 205 +))) 95 95 207 +((( 96 96 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 209 +))) 97 97 211 +((( 98 98 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 213 +))) 99 99 215 +((( 100 100 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 217 +))) 101 101 219 +((( 102 102 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 221 +))) 103 103 223 +((( 224 + 225 +))) 104 104 227 +((( 228 + 229 +))) 105 105 231 +((( 106 106 (% style="color:#4f81bd" %)**Example 1:** 233 +))) 107 107 235 +((( 108 108 **AT+SEND=01020304 **will send a payload of 01020304 237 +))) 109 109 239 +((( 240 + 241 +))) 110 110 243 +((( 111 111 (% style="color:#4f81bd" %)**Example 2: ** 245 +))) 112 112 113 -**AT+TRIGx=a **Trigger directly without triggering time 247 +((( 248 +**AT+TRIGx=a **Trigger directly without triggering time 249 +))) 114 114 251 +((( 115 115 **AT+TRIGx=a,b** 253 +))) 116 116 255 +((( 117 117 a=0: falling edge; 257 +))) 118 118 259 +((( 119 119 a=1: rising edge; 261 +))) 120 120 263 +((( 121 121 a=2: falling edge or rising edge; 265 +))) 122 122 267 +((( 123 123 b: triggering time in milliseconds. 269 +))) 124 124 271 +((( 125 125 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 273 +))) 126 126 275 +((( 276 + 277 +))) 127 127 279 +((( 128 128 (% style="color:#4f81bd" %)**Example 3: ** 281 +))) 129 129 283 +((( 130 130 **AT+DI1TODO1= maps value** 285 +))) 131 131 287 +((( 132 132 **AT+DI1TORO1= maps value** 289 +))) 133 133 291 +((( 134 134 **AT+DI2TODO2= maps value** 293 +))) 135 135 295 +((( 136 136 **AT+DI2TORO2= maps value** 297 +))) 137 137 299 +((( 300 + 301 +))) 138 138 139 139 (% 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 141 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 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" %)((( 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 +((( 143 143 If DIx is high, control ROx to close, 325 +))) 144 144 327 +((( 145 145 if DIx is low, control ROx to open 146 146 ))) 147 -|(% 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 +((( 148 148 If DIx is high, control ROx to open, 338 +))) 149 149 340 +((( 150 150 if DIx is low, control ROx to close 151 151 ))) 152 -|(% 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 +))) 153 153 154 - 352 +((( 155 155 (% style="color:#4f81bd" %)**Example 4: ** 354 +))) 156 156 356 +((( 157 157 **AT+GROUPMOD=0** Set to point to point mode 358 +))) 158 158 360 +((( 159 159 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 362 +))) 160 160 364 +((( 365 +((( 161 161 **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 +))) 162 162 370 +((( 163 163 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 372 +))) 164 164 374 +((( 165 165 **AT+GROUPMOD=1,1** Set the RX group numbered 1 376 +))) 166 166 378 +((( 167 167 **AT+GROUPMOD=1,2** Set the RX group numbered 2 380 +))) 168 168 169 169 170 - 171 171 == **2.4 Data Format** == 172 172 385 +((( 173 173 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 387 +))) 174 174 389 +((( 390 + 391 +))) 175 175 176 -**Payload:** 393 +((( 394 +(% style="color:#4f81bd" %)**Payload:** 395 +))) 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" %)((( 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 +((( 181 181 DI1& 430 +))) 182 182 432 +((( 183 183 DI1 level 184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 434 +))) 435 +)))|(% style="width:101px" %)((( 436 +DI1TODO1 437 +)))|(% style="width:91px" %)((( 438 +DI1TORO1 439 +)))|(% style="width:111px" %)((( 440 +((( 185 185 DI2& 442 +))) 186 186 444 +((( 187 187 DI2 level 188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 446 +))) 447 +)))|(% style="width:105px" %)((( 448 +DI2TODO2 449 +)))|(% style="width:106px" %)((( 450 +DI2TORO2 451 +))) 189 189 453 +((( 190 190 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 455 +))) 191 191 457 +((( 192 192 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 459 +))) 193 193 461 +((( 194 194 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 463 +))) 195 195 465 +((( 466 +((( 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. 468 +))) 469 +))) 197 197 471 +((( 198 198 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 473 +))) 199 199 475 +((( 200 200 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 477 +))) 201 201 479 +((( 480 +((( 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. 482 +))) 483 +))) 203 203 485 +((( 204 204 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 487 +))) 205 205 489 +((( 206 206 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 491 +))) 207 207 208 208
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