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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... ... @@ -1,7 +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 ... ... @@ -39,16 +39,80 @@ 39 39 |AT+DI2TORO2=2|AT+DI2TORO2=2 40 40 41 41 42 -== **2.2 PointToMult-Point** ==45 +=== **2.2.3 Serial port display** === 43 43 44 44 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 ... ... @@ -55,162 +55,372 @@ 55 55 == **2.3 AT command** == 56 56 57 57 125 +((( 58 58 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 127 +))) 59 59 129 +((( 60 60 (% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 131 +))) 61 61 133 +((( 62 62 (% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 135 +))) 63 63 137 +((( 64 64 (% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 139 +))) 65 65 141 +((( 66 66 (% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 143 +))) 67 67 145 +((( 68 68 (% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 147 +))) 69 69 149 +((( 70 70 (% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 151 +))) 71 71 153 +((( 72 72 (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 155 +))) 73 73 157 +((( 74 74 (% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 159 +))) 75 75 161 +((( 76 76 (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 163 +))) 77 77 165 +((( 78 78 (% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 167 +))) 79 79 169 +((( 80 80 (% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 171 +))) 81 81 173 +((( 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) 175 +))) 83 83 177 +((( 84 84 (% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 179 +))) 85 85 181 +((( 86 86 (% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 183 +))) 87 87 185 +((( 88 88 (% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 187 +))) 89 89 189 +((( 90 90 (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 191 +))) 91 91 92 92 ((( 194 +((( 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 ))) 197 +))) 95 95 199 +((( 96 96 (% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 201 +))) 97 97 203 +((( 98 98 (% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 205 +))) 99 99 207 +((( 100 100 (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 209 +))) 101 101 211 +((( 102 102 (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 213 +))) 103 103 215 +((( 104 104 (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 217 +))) 105 105 219 +((( 106 106 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 221 +))) 107 107 223 +((( 224 + 225 +))) 108 108 227 +((( 228 + 229 +))) 109 109 231 +((( 110 110 (% style="color:#4f81bd" %)**Example 1:** 233 +))) 111 111 235 +((( 112 112 **AT+SEND=01020304 **will send a payload of 01020304 237 +))) 113 113 239 +((( 240 + 241 +))) 114 114 243 +((( 115 115 (% style="color:#4f81bd" %)**Example 2: ** 245 +))) 116 116 247 +((( 117 117 **AT+TRIGx=a **Trigger directly without triggering time 249 +))) 118 118 251 +((( 119 119 **AT+TRIGx=a,b** 253 +))) 120 120 255 +((( 121 121 a=0: falling edge; 257 +))) 122 122 259 +((( 123 123 a=1: rising edge; 261 +))) 124 124 263 +((( 125 125 a=2: falling edge or rising edge; 265 +))) 126 126 267 +((( 127 127 b: triggering time in milliseconds. 269 +))) 128 128 271 +((( 129 129 AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 273 +))) 130 130 275 +((( 276 + 277 +))) 131 131 279 +((( 132 132 (% style="color:#4f81bd" %)**Example 3: ** 281 +))) 133 133 283 +((( 134 134 **AT+DI1TODO1= maps value** 285 +))) 135 135 287 +((( 136 136 **AT+DI1TORO1= maps value** 289 +))) 137 137 291 +((( 138 138 **AT+DI2TODO2= maps value** 293 +))) 139 139 295 +((( 140 140 **AT+DI2TORO2= maps value** 297 +))) 141 141 299 +((( 300 + 301 +))) 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" %)((( 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 +((( 147 147 If DIx is high, control ROx to close, 325 +))) 148 148 327 +((( 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" %)((( 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 +((( 152 152 If DIx is high, control ROx to open, 338 +))) 153 153 340 +((( 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 343 +))) 344 +|(% style="width:102px" %)((( 345 +3 346 +)))|(% style="width:331px" %)((( 347 +DOx state flip 348 +)))|(% style="width:268px" %)((( 349 +ROx state flip 350 +))) 157 157 352 +((( 158 158 (% style="color:#4f81bd" %)**Example 4: ** 354 +))) 159 159 356 +((( 160 160 **AT+GROUPMOD=0** Set to point to point mode 358 +))) 161 161 360 +((( 162 162 **AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 362 +))) 163 163 164 164 ((( 365 +((( 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 ))) 368 +))) 167 167 370 +((( 168 168 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 372 +))) 169 169 374 +((( 170 170 **AT+GROUPMOD=1,1** Set the RX group numbered 1 376 +))) 171 171 378 +((( 172 172 **AT+GROUPMOD=1,2** Set the RX group numbered 2 380 +))) 173 173 174 174 175 175 == **2.4 Data Format** == 176 176 385 +((( 177 177 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 387 +))) 178 178 389 +((( 390 + 391 +))) 179 179 393 +((( 180 180 (% style="color:#4f81bd" %)**Payload:** 395 +))) 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" %)((( 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 +((( 185 185 DI1& 430 +))) 186 186 432 +((( 187 187 DI1 level 188 -)))|(% 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 +((( 189 189 DI2& 442 +))) 190 190 444 +((( 191 191 DI2 level 192 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 446 +))) 447 +)))|(% style="width:105px" %)((( 448 +DI2TODO2 449 +)))|(% style="width:106px" %)((( 450 +DI2TORO2 451 +))) 193 193 453 +((( 194 194 (% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 455 +))) 195 195 457 +((( 196 196 (% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 459 +))) 197 197 461 +((( 198 198 (% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 463 +))) 199 199 200 200 ((( 466 +((( 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 ))) 469 +))) 203 203 471 +((( 204 204 (% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 473 +))) 205 205 475 +((( 206 206 (% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 477 +))) 207 207 208 208 ((( 480 +((( 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 ))) 483 +))) 211 211 485 +((( 212 212 (% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 487 +))) 213 213 489 +((( 214 214 (% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 491 +))) 215 215 216 216
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