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 ... ... @@ -38,16 +38,82 @@ 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 ... ... @@ -54,162 +54,372 @@ 54 54 == **2.3 AT command** == 55 55 56 56 125 +((( 57 57 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 127 +))) 58 58 129 +((( 59 59 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 131 +))) 60 60 133 +((( 61 61 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 135 +))) 62 62 137 +((( 63 63 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 139 +))) 64 64 141 +((( 65 65 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 143 +))) 66 66 145 +((( 67 67 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 147 +))) 68 68 149 +((( 69 69 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 151 +))) 70 70 153 +((( 71 71 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 155 +))) 72 72 157 +((( 73 73 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 159 +))) 74 74 161 +((( 75 75 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 163 +))) 76 76 165 +((( 77 77 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 167 +))) 78 78 169 +((( 79 79 (% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 171 +))) 80 80 173 +((( 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) 175 +))) 82 82 177 +((( 83 83 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 179 +))) 84 84 181 +((( 85 85 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 183 +))) 86 86 185 +((( 87 87 (% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 187 +))) 88 88 189 +((( 89 89 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 191 +))) 90 90 91 91 ((( 194 +((( 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 ))) 197 +))) 94 94 199 +((( 95 95 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 201 +))) 96 96 203 +((( 97 97 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 205 +))) 98 98 207 +((( 99 99 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 209 +))) 100 100 211 +((( 101 101 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 213 +))) 102 102 215 +((( 103 103 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 217 +))) 104 104 219 +((( 105 105 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 221 +))) 106 106 223 +((( 224 + 225 +))) 107 107 227 +((( 228 + 229 +))) 108 108 231 +((( 109 109 (% style="color:#4f81bd" %)**Example 1:** 233 +))) 110 110 235 +((( 111 111 **AT+SEND=01020304 **will send a payload of 01020304 237 +))) 112 112 239 +((( 240 + 241 +))) 113 113 243 +((( 114 114 (% style="color:#4f81bd" %)**Example 2: ** 245 +))) 115 115 247 +((( 116 116 **AT+TRIGx=a **Trigger directly without triggering time 249 +))) 117 117 251 +((( 118 118 **AT+TRIGx=a,b** 253 +))) 119 119 255 +((( 120 120 a=0: falling edge; 257 +))) 121 121 259 +((( 122 122 a=1: rising edge; 261 +))) 123 123 263 +((( 124 124 a=2: falling edge or rising edge; 265 +))) 125 125 267 +((( 126 126 b: triggering time in milliseconds. 269 +))) 127 127 271 +((( 128 128 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 273 +))) 129 129 275 +((( 276 + 277 +))) 130 130 279 +((( 131 131 (% style="color:#4f81bd" %)**Example 3: ** 281 +))) 132 132 283 +((( 133 133 **AT+DI1TODO1= maps value** 285 +))) 134 134 287 +((( 135 135 **AT+DI1TORO1= maps value** 289 +))) 136 136 291 +((( 137 137 **AT+DI2TODO2= maps value** 293 +))) 138 138 295 +((( 139 139 **AT+DI2TORO2= maps value** 297 +))) 140 140 299 +((( 300 + 301 +))) 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" %)((( 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 +((( 146 146 If DIx is high, control ROx to close, 325 +))) 147 147 327 +((( 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" %)((( 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 +((( 151 151 If DIx is high, control ROx to open, 338 +))) 152 152 340 +((( 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 343 +))) 344 +|(% style="width:102px" %)((( 345 +3 346 +)))|(% style="width:331px" %)((( 347 +DOx state flip 348 +)))|(% style="width:268px" %)((( 349 +ROx state flip 350 +))) 156 156 352 +((( 157 157 (% style="color:#4f81bd" %)**Example 4: ** 354 +))) 158 158 356 +((( 159 159 **AT+GROUPMOD=0** Set to point to point mode 358 +))) 160 160 360 +((( 161 161 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 362 +))) 162 162 163 163 ((( 365 +((( 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 ))) 368 +))) 166 166 370 +((( 167 167 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 372 +))) 168 168 374 +((( 169 169 **AT+GROUPMOD=1,1** Set the RX group numbered 1 376 +))) 170 170 378 +((( 171 171 **AT+GROUPMOD=1,2** Set the RX group numbered 2 380 +))) 172 172 173 173 174 174 == **2.4 Data Format** == 175 175 385 +((( 176 176 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 387 +))) 177 177 389 +((( 390 + 391 +))) 178 178 393 +((( 179 179 (% style="color:#4f81bd" %)**Payload:** 395 +))) 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" %)((( 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 +((( 184 184 DI1& 430 +))) 185 185 432 +((( 186 186 DI1 level 187 -)))|(% 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 +((( 188 188 DI2& 442 +))) 189 189 444 +((( 190 190 DI2 level 191 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 446 +))) 447 +)))|(% style="width:105px" %)((( 448 +DI2TODO2 449 +)))|(% style="width:106px" %)((( 450 +DI2TORO2 451 +))) 192 192 453 +((( 193 193 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 455 +))) 194 194 457 +((( 195 195 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 459 +))) 196 196 461 +((( 197 197 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 463 +))) 198 198 199 199 ((( 466 +((( 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 ))) 469 +))) 202 202 471 +((( 203 203 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 473 +))) 204 204 475 +((( 205 205 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 477 +))) 206 206 207 207 ((( 480 +((( 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 ))) 483 +))) 210 210 485 +((( 211 211 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 487 +))) 212 212 489 +((( 213 213 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 491 +))) 214 214 215 215
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