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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... ... @@ -1,1 +1,1 @@ 1 - 1 +Point to Point Communication of LT-22222-L - Author
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... ... @@ -1,7 +1,10 @@ 1 -{{box cssClass="floatinginfobox" title="**Contents**"}} 1 +**Contents: ** 2 + 2 2 {{toc/}} 3 -{{/box}} 4 4 5 + 6 + 7 + 5 5 = **1. Overview** = 6 6 7 7 ((( ... ... @@ -12,20 +12,20 @@ 12 12 [[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]]. 13 13 ))) 14 14 15 -== == 16 16 17 17 = **2. Features for this firmware** = 18 18 19 - 20 20 == **2.1 Point To Point** == 21 21 23 +=== **2.1.1 Overview** === 22 22 25 + 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:** 29 +=== **2.2.2 Configure** === 28 28 31 + 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 ... ... @@ -38,17 +38,80 @@ 38 38 |AT+DI2TODO2=2 |AT+DI2TODO2=2 39 39 |AT+DI2TORO2=2|AT+DI2TORO2=2 40 40 44 +=== **2.2.3 Serial port display** === 41 41 42 -== **2.2 Point To Mult-Point ** == 43 43 44 - 47 +(% class="wikigeneratedid" %) 45 45 [[image:image-20220602111219-2.png]] 46 46 47 47 51 +(% class="wikigeneratedid" %) 48 48 [[image:image-20220602111219-3.png]] 49 49 50 -( ((54 +(% 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. 56 + 57 + 58 +== **2.2 Point To Mult-Point ** == 59 + 60 +=== **2.2.1 Overview** === 61 + 62 + 63 +[[image:1654152390874-192.png]] 64 + 65 + 66 +=== **2.2.2 Configure** === 67 + 68 + 69 +(% style="color:#4f81bd" %)**Configuration of the TX group:** 70 + 71 +AT+GROUPMOD=0,2 72 + 73 +AT+TXCHS=868700000 74 + 75 +AT+RXCHS=869000000 76 + 77 +AT+TRIG1=2,50 78 + 79 +AT+TRIG2=2,50 80 + 81 +AT+DI1TODO1=1 82 + 83 +AT+DI1TORO1=1 84 + 85 +AT+DI2TODO2=1 86 + 87 +AT+DI2TORO2=1 88 + 89 + 90 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:** 91 + 92 +AT+GROUPMOD=1,1 93 + 94 +AT+TXCHS=869000000 95 + 96 +AT+RXCHS=868700000 97 + 98 + 99 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:** 100 + 101 +AT+GROUPMOD=1,2 102 + 103 +AT+TXCHS=869000000 104 + 105 +AT+RXCHS=868700000 106 + 107 + 108 +=== **2.2.3 Serial port display** === 109 + 110 + 111 +[[image:image-20220602144747-1.png]] 112 + 113 + 114 +[[image:image-20220602144747-2.png]] 115 + 116 +((( 117 +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 ... ... @@ -55,162 +55,372 @@ 55 55 == **2.3 AT command** == 56 56 57 57 124 +((( 58 58 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 126 +))) 59 59 128 +((( 60 60 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 130 +))) 61 61 132 +((( 62 62 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 134 +))) 63 63 136 +((( 64 64 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 138 +))) 65 65 140 +((( 66 66 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 142 +))) 67 67 144 +((( 68 68 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 146 +))) 69 69 148 +((( 70 70 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 150 +))) 71 71 152 +((( 72 72 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 154 +))) 73 73 156 +((( 74 74 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 158 +))) 75 75 160 +((( 76 76 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 162 +))) 77 77 164 +((( 78 78 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 166 +))) 79 79 168 +((( 80 80 (% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 170 +))) 81 81 172 +((( 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) 174 +))) 83 83 176 +((( 84 84 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 178 +))) 85 85 180 +((( 86 86 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 182 +))) 87 87 184 +((( 88 88 (% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 186 +))) 89 89 188 +((( 90 90 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 190 +))) 91 91 92 92 ((( 193 +((( 93 93 (% 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) 94 94 ))) 196 +))) 95 95 198 +((( 96 96 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 200 +))) 97 97 202 +((( 98 98 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 204 +))) 99 99 206 +((( 100 100 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 208 +))) 101 101 210 +((( 102 102 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 212 +))) 103 103 214 +((( 104 104 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 216 +))) 105 105 218 +((( 106 106 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 220 +))) 107 107 222 +((( 223 + 224 +))) 108 108 226 +((( 227 + 228 +))) 109 109 230 +((( 110 110 (% style="color:#4f81bd" %)**Example 1:** 232 +))) 111 111 234 +((( 112 112 **AT+SEND=01020304 **will send a payload of 01020304 236 +))) 113 113 238 +((( 239 + 240 +))) 114 114 242 +((( 115 115 (% style="color:#4f81bd" %)**Example 2: ** 244 +))) 116 116 246 +((( 117 117 **AT+TRIGx=a **Trigger directly without triggering time 248 +))) 118 118 250 +((( 119 119 **AT+TRIGx=a,b** 252 +))) 120 120 254 +((( 121 121 a=0: falling edge; 256 +))) 122 122 258 +((( 123 123 a=1: rising edge; 260 +))) 124 124 262 +((( 125 125 a=2: falling edge or rising edge; 264 +))) 126 126 266 +((( 127 127 b: triggering time in milliseconds. 268 +))) 128 128 270 +((( 129 129 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 272 +))) 130 130 274 +((( 275 + 276 +))) 131 131 278 +((( 132 132 (% style="color:#4f81bd" %)**Example 3: ** 280 +))) 133 133 282 +((( 134 134 **AT+DI1TODO1= maps value** 284 +))) 135 135 286 +((( 136 136 **AT+DI1TORO1= maps value** 288 +))) 137 137 290 +((( 138 138 **AT+DI2TODO2= maps value** 292 +))) 139 139 294 +((( 140 140 **AT+DI2TORO2= maps value** 296 +))) 141 141 298 +((( 299 + 300 +))) 142 142 143 143 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 144 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 145 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 146 -|(% 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" %)((( 303 +|=(% style="width: 102px;" %)((( 304 +Maps value 305 +)))|=(% style="width: 331px;" %)((( 306 +DIx to DOx 307 +)))|=(% style="width: 268px;" %)((( 308 +DIx to ROx 309 +))) 310 +|(% style="width:102px" %)((( 311 +0 312 +)))|(% style="width:331px" %)((( 313 +No Action 314 +)))|(% style="width:268px" %)((( 315 +No Action 316 +))) 317 +|(% style="width:102px" %)((( 318 +1 319 +)))|(% style="width:331px" %)((( 320 +If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 321 +)))|(% style="width:268px" %)((( 322 +((( 147 147 If DIx is high, control ROx to close, 324 +))) 148 148 326 +((( 149 149 if DIx is low, control ROx to open 150 150 ))) 151 -|(% 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" %)((( 329 +))) 330 +|(% style="width:102px" %)((( 331 +2 332 +)))|(% style="width:331px" %)((( 333 +If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 334 +)))|(% style="width:268px" %)((( 335 +((( 152 152 If DIx is high, control ROx to open, 337 +))) 153 153 339 +((( 154 154 if DIx is low, control ROx to close 155 155 ))) 156 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 342 +))) 343 +|(% style="width:102px" %)((( 344 +3 345 +)))|(% style="width:331px" %)((( 346 +DOx state flip 347 +)))|(% style="width:268px" %)((( 348 +ROx state flip 349 +))) 157 157 351 +((( 158 158 (% style="color:#4f81bd" %)**Example 4: ** 353 +))) 159 159 355 +((( 160 160 **AT+GROUPMOD=0** Set to point to point mode 357 +))) 161 161 359 +((( 162 162 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 361 +))) 163 163 164 164 ((( 364 +((( 165 165 **AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 166 166 ))) 367 +))) 167 167 369 +((( 168 168 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 371 +))) 169 169 373 +((( 170 170 **AT+GROUPMOD=1,1** Set the RX group numbered 1 375 +))) 171 171 377 +((( 172 172 **AT+GROUPMOD=1,2** Set the RX group numbered 2 379 +))) 173 173 174 174 175 175 == **2.4 Data Format** == 176 176 384 +((( 177 177 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 386 +))) 178 178 388 +((( 389 + 390 +))) 179 179 392 +((( 180 180 (% style="color:#4f81bd" %)**Payload:** 394 +))) 181 181 182 182 (% border="1" style="background-color:#f7faff; color:black; width:938px" %) 183 -|=(% 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;" %)1 184 -|(% style="width:123px" %)**Value**|(% style="width:38px" %)address|(% style="width:70px" %)request|(% style="width:52px" %)ACK|(% style="width:127px" %)((( 397 +|=(% style="width: 123px;" %)((( 398 +**Size (bytes)** 399 +)))|=(% style="width: 107px;" %)((( 400 +1 401 +)))|=(% style="width: 107px;" %)((( 402 +1 403 +)))|=(% style="width: 107px;" %)((( 404 +1 405 +)))|=(% style="width: 107px;" %)((( 406 +1 407 +)))|=(% style="width: 107px;" %)((( 408 +1 409 +)))|=(% style="width: 107px;" %)((( 410 +1 411 +)))|=(% style="width: 107px;" %)((( 412 +1 413 +)))|=(% style="width: 107px;" %)((( 414 +1 415 +)))|=(% style="width: 107px;" %)((( 416 +1 417 +))) 418 +|(% style="width:123px" %)((( 419 +**Value** 420 +)))|(% style="width:38px" %)((( 421 +address 422 +)))|(% style="width:70px" %)((( 423 +request 424 +)))|(% style="width:52px" %)((( 425 +ACK 426 +)))|(% style="width:127px" %)((( 427 +((( 185 185 DI1& 429 +))) 186 186 431 +((( 187 187 DI1 level 188 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 433 +))) 434 +)))|(% style="width:101px" %)((( 435 +DI1TODO1 436 +)))|(% style="width:91px" %)((( 437 +DI1TORO1 438 +)))|(% style="width:111px" %)((( 439 +((( 189 189 DI2& 441 +))) 190 190 443 +((( 191 191 DI2 level 192 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 445 +))) 446 +)))|(% style="width:105px" %)((( 447 +DI2TODO2 448 +)))|(% style="width:106px" %)((( 449 +DI2TORO2 450 +))) 193 193 452 +((( 194 194 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 454 +))) 195 195 456 +((( 196 196 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 458 +))) 197 197 460 +((( 198 198 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 462 +))) 199 199 200 200 ((( 465 +((( 201 201 (% 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. 202 202 ))) 468 +))) 203 203 470 +((( 204 204 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 472 +))) 205 205 474 +((( 206 206 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 476 +))) 207 207 208 208 ((( 479 +((( 209 209 (% 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. 210 210 ))) 482 +))) 211 211 484 +((( 212 212 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 486 +))) 213 213 488 +((( 214 214 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 490 +))) 215 215 216 216
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