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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... ... @@ -26,6 +26,7 @@ 26 26 (% class="wikigeneratedid" id="H2.2.Configure" %) 27 27 (% style="color:blue" %)**Configure:** 28 28 29 + 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 ... ... @@ -46,380 +46,154 @@ 46 46 47 47 [[image:image-20220602111219-3.png]] 48 48 49 -((( 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 -))) 52 52 53 53 54 54 == **2.3 AT command** == 55 55 56 56 57 -((( 58 -(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 59 -))) 56 +ATZ : Trig a reset of the MCU 60 60 61 -((( 62 -(% style="color:#037691" %)**AT+FDR** (%%)**:** Reset Parameters to Factory Default, Keys Reserve 63 -))) 58 +AT+FDR : Reset Parameters to Factory Default, Keys Reserve 64 64 65 -((( 66 -(% style="color:#037691" %)**AT+FCU** (%%)**:** Get or Set the Frame Counter Uplink 67 -))) 60 +AT+FCU : Get or Set the Frame Counter Uplink 68 68 69 -((( 70 -(% style="color:#037691" %)**AT+FCD** (%%)**:** Get or Set the Frame Counter Downlink 71 -))) 62 +AT+FCD : Get or Set the Frame Counter Downlink 72 72 73 -((( 74 -(% style="color:#037691" %)**AT+TXP** (%%)**:** Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 75 -))) 64 +AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm) 76 76 77 -((( 78 -(% style="color:#037691" %)**AT+SYNC** (%%)**:** Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 79 -))) 66 +AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1) 80 80 81 -((( 82 -(% style="color:#037691" %)**AT+PMB** (%%)**: **Get or Set the preamble (default:8) 83 -))) 68 +AT+PMB : Get or Set the preamble (default:8) 84 84 85 -((( 86 -(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000) 87 -))) 70 +AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000) 88 88 89 -((( 90 -(% style="color:#037691" %)**AT+TXSF **(%%)**:** Get or Set the spreading factor of TX (7 to 12) (default:12) 91 -))) 72 +AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12) 92 92 93 -((( 94 -(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000) 95 -))) 74 +AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000) 96 96 97 -((( 98 -(% style="color:#037691" %)**AT+RXSF **(%%)**:** Get or Set the spreading factor of RX (7 to 12) (default:12) 99 -))) 76 +AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12) 100 100 101 -((( 102 -(% style="color:#037691" %)**AT+BW **(%%)**: **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 103 -))) 78 +AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0) 104 104 105 -((( 106 -(% 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) 107 -))) 80 +AT+CR : Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1) 108 108 109 -((( 110 -(% style="color:#037691" %)**AT+TDC **(%%)**:** Get or set the application data transmission interval in ms(default 10 minutes) 111 -))) 82 +AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes) 112 112 113 -((( 114 -(% style="color:#037691" %)**AT+VER **(%%)**:** Get firmware version number 115 -))) 84 +AT+VER : Get firmware version number 116 116 117 -((( 118 -(% style="color:#037691" %)**AT+SEND **(%%)**: **Set Custom sent hex data 119 -))) 86 +AT+SEND : Set Custom sent hex data 120 120 121 -((( 122 -(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0) 123 -))) 88 +AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0) 124 124 125 -((( 126 -((( 127 -(% 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) 128 -))) 129 -))) 90 +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) 130 130 131 -((( 132 -(% style="color:#037691" %)**AT+TRIG1 **(%%)**:** Set or Get the DI1 pin interrupt trigger mode (default 0,0) 133 -))) 92 +AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0) 134 134 135 -((( 136 -(% style="color:#037691" %)**AT+TRIG2 **(%%)**: **Set or Get the DI2 pin interrupt trigger mode (default 0,0) 137 -))) 94 +AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0) 138 138 139 -((( 140 -(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**: **Set or get the mode in which DI1 maps to DO1 (default 0) 141 -))) 96 +AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0) 142 142 143 -((( 144 -(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**: **Set or get the mode in which DI1 maps to RO1(default 0) 145 -))) 98 +AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0) 146 146 147 -((( 148 -(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:** Set or get the mode in which DI2 maps to DO2(default 0) 149 -))) 100 +AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0) 150 150 151 -((( 152 -(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 153 -))) 102 +AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0) 154 154 155 -((( 156 - 157 -))) 158 158 159 -((( 160 - 161 -))) 162 162 163 -((( 164 -(% style="color:#4f81bd" %)**Example 1:** 165 -))) 106 +**Example1:** AT+SEND=01020304 will send a payload of 01020304 166 166 167 -((( 168 -**AT+SEND=01020304 **will send a payload of 01020304 169 -))) 170 170 171 -((( 172 - 173 -))) 109 +i.g. AT+TRIGx=a Trigger directly without triggering time 174 174 175 -((( 176 -(% style="color:#4f81bd" %)**Example 2: ** 177 -))) 111 +AT+TRIGx=a,b a=0, falling edge; 178 178 179 -((( 180 -**AT+TRIGx=a **Trigger directly without triggering time 181 -))) 113 +a=1, rising edge; 182 182 183 -((( 184 -**AT+TRIGx=a,b** 185 -))) 115 + a=2, falling edge or rising edge. 186 186 187 -((( 188 -a=0: falling edge; 189 -))) 117 + b, triggering time in milliseconds 190 190 191 -((( 192 -a=1: rising edge; 193 -))) 119 + AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms 194 194 195 -((( 196 -a=2: falling edge or rising edge; 197 -))) 198 198 199 -((( 200 -b: triggering time in milliseconds. 201 -))) 122 +i.g. AT+DI1TODO1= maps value 202 202 203 -((( 204 -AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 205 -))) 124 + AT+DI1TORO1= maps value 206 206 207 -((( 208 - 209 -))) 126 +AT+DI2TODO2= maps value 210 210 211 -((( 212 -(% style="color:#4f81bd" %)**Example 3: ** 213 -))) 128 +AT+DI2TORO2= maps value 214 214 215 -((( 216 -**AT+DI1TODO1= maps value** 217 -))) 218 218 219 -((( 220 -**AT+DI1TORO1= maps value** 221 -))) 222 222 223 -((( 224 -**AT+DI2TODO2= maps value** 225 -))) 226 226 227 -((( 228 -**AT+DI2TORO2= maps value** 229 -))) 230 - 231 -((( 232 - 233 -))) 234 - 235 235 (% border="1" style="background-color:#f7faff; color:black; width:706px" %) 236 -|=(% style="width: 102px;" %)((( 237 -Maps value 238 -)))|=(% style="width: 331px;" %)((( 239 -DIx to DOx 240 -)))|=(% style="width: 268px;" %)((( 241 -DIx to ROx 242 -))) 243 -|(% style="width:102px" %)((( 244 -0 245 -)))|(% style="width:331px" %)((( 246 -No Action 247 -)))|(% style="width:268px" %)((( 248 -No Action 249 -))) 250 -|(% style="width:102px" %)((( 251 -1 252 -)))|(% style="width:331px" %)((( 253 -If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 254 -)))|(% style="width:268px" %)((( 255 -((( 134 +|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx 135 +|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action 136 +|(% 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" %)((( 256 256 If DIx is high, control ROx to close, 257 -))) 258 258 259 -((( 260 260 if DIx is low, control ROx to open 261 261 ))) 262 -))) 263 -|(% style="width:102px" %)((( 264 -2 265 -)))|(% style="width:331px" %)((( 266 -If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 267 -)))|(% style="width:268px" %)((( 268 -((( 141 +|(% 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" %)((( 269 269 If DIx is high, control ROx to open, 270 -))) 271 271 272 -((( 273 273 if DIx is low, control ROx to close 274 274 ))) 275 -))) 276 -|(% style="width:102px" %)((( 277 -3 278 -)))|(% style="width:331px" %)((( 279 -DOx state flip 280 -)))|(% style="width:268px" %)((( 281 -ROx state flip 282 -))) 146 +|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip 283 283 284 -((( 285 -(% style="color:#4f81bd" %)**Example 4: ** 286 -))) 148 +i.g. AT+GROUPMOD=0 Set to point to point mode 287 287 288 -((( 289 -**AT+GROUPMOD=0** Set to point to point mode 290 -))) 150 +AT+GROUPMOD=0,aa Set the TX group that controls the number of aa (The maximum value of aa is 8) 291 291 292 -((( 293 -**AT+GROUPMOD=0,aa** Set the TX group that controls the number of aa (The maximum value of aa is 8) 294 -))) 152 +AT+GROUPMOD=1,bb Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 295 295 296 -((( 297 -((( 298 -**AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 299 -))) 300 -))) 301 301 302 -((( 303 -**AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups 304 -))) 155 +AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups 305 305 306 -((( 307 -**AT+GROUPMOD=1,1** Set the RX group numbered 1 308 -))) 157 +AT+GROUPMOD=1,1 Set the RX group numbered 1 309 309 310 -((( 311 -**AT+GROUPMOD=1,2** Set the RX group numbered 2 312 -))) 159 +AT+GROUPMOD=1,2 Set the RX group numbered 2 313 313 314 314 162 + 315 315 == **2.4 Data Format** == 316 316 317 -((( 318 318 8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 319 -))) 320 320 321 -((( 322 - 323 -))) 324 324 325 -((( 326 -(% style="color:#4f81bd" %)**Payload:** 327 -))) 168 +Payload: 328 328 329 329 (% border="1" style="background-color:#f7faff; color:black; width:938px" %) 330 -|=(% style="width: 123px;" %)((( 331 -**Size (bytes)** 332 -)))|=(% style="width: 107px;" %)((( 333 -1 334 -)))|=(% style="width: 107px;" %)((( 335 -1 336 -)))|=(% style="width: 107px;" %)((( 337 -1 338 -)))|=(% style="width: 107px;" %)((( 339 -1 340 -)))|=(% style="width: 107px;" %)((( 341 -1 342 -)))|=(% style="width: 107px;" %)((( 343 -1 344 -)))|=(% style="width: 107px;" %)((( 345 -1 346 -)))|=(% style="width: 107px;" %)((( 347 -1 348 -)))|=(% style="width: 107px;" %)((( 349 -1 350 -))) 351 -|(% style="width:123px" %)((( 352 -**Value** 353 -)))|(% style="width:38px" %)((( 354 -address 355 -)))|(% style="width:70px" %)((( 356 -request 357 -)))|(% style="width:52px" %)((( 358 -ACK 359 -)))|(% style="width:127px" %)((( 360 -((( 171 +|=(% 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;" %)1 172 +|(% style="width:123px" %)**Value**|(% style="width:38px" %)address|(% style="width:70px" %)request|(% style="width:52px" %)ACK|(% style="width:127px" %)((( 361 361 DI1& 362 -))) 363 363 364 -((( 365 365 DI1 level 366 -))) 367 -)))|(% style="width:101px" %)((( 368 -DI1TODO1 369 -)))|(% style="width:91px" %)((( 370 -DI1TORO1 371 -)))|(% style="width:111px" %)((( 372 -((( 176 +)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)((( 373 373 DI2& 374 -))) 375 375 376 -((( 377 377 DI2 level 378 -))) 379 -)))|(% style="width:105px" %)((( 380 -DI2TODO2 381 -)))|(% style="width:106px" %)((( 382 -DI2TORO2 383 -))) 180 +)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2 384 384 385 -((( 386 -(% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 387 -))) 182 +**The first byte**: 00 is the broadcast address, 01-08 is the RX group number 388 388 389 -((( 390 -(% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 391 -))) 184 +**The second byte**: send mapping request when not 0, not request when it is 0 392 392 393 -((( 394 -(% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 395 -))) 186 +**The third byte**: ACK returned to the sender after the mapping is completed 396 396 397 -((( 398 -((( 399 -(% 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. 400 -))) 401 -))) 188 +**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 402 402 403 -((( 404 -(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 405 -))) 190 +**The Fifth byte**: DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered 406 406 407 -((( 408 -(% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 409 -))) 192 +**The Sixth byte**: 0 does not trigger interrupt when DI1TORO1 interrupt is triggered 410 410 411 -((( 412 -((( 413 -(% 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. 414 -))) 415 -))) 194 +**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 416 416 417 -((( 418 -(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 419 -))) 196 +**The 8th byte**: DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered 420 420 421 -((( 422 -(% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 423 -))) 198 +**The 9th byte**: DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered 424 424 425 425