File name: vc1sx-1276b-g4 wireless module used Documentation Document Number: vc-qw-0a-2017-10 vc1sx-1276b-g4 wireless module Use document v1.1 Preparation / Date: 2017-0710 Audit / Date: 2017-07-11 Approval / Date: 2017-07-12 Shanghai Entropy Internet of Things Technology Co., Ltd. 第 1页 19 页 Date: 2017.10.27 Implementation date: 2017.10.
File name: vc1sx-1276b-g4 wireless module used Documentation Document Number: vc-qw-0a-2017-10 Date: 2017.10.27 Implementation date: 2017.10.27 Version v1.1 time version number editor V1.0 Li Teng 2016-08-02 V1.1 Pei Liqun 2017-03-25 instruction manual Initial version, all functions are implemented Add test bit error rate Version v1.1 ......................................................................................................................................................... 2 1.
File name: vc1sx-1276b-g4 wireless module used Documentation Document Number: vc-qw-0a-2017-10 Date: 2017.10.27 Implementation date: 2017.10.27 9.3. Examples ............................................................................................................................................................ 18 9.4 、 Parameter setting packing instruction............................................................................................... 19 10. Technical support and after-sales service.....
File name: vc1sx-1276b-g4 wireless module used Documentation Document Number: vc-qw-0a-2017-10 Date: 2017.10.27 Implementation date: 2017.10.27 1.Description VC1SX-1276B type wireless communication module is highly integrated with ultra-lowpower half-duplex micro-power wireless data transmission module, using LORA chip SX1276, embedded with high-speed single-chip microcomputer and high-performance radio frequency chip.
3.Technical characteris tics Serial data is directly transparently transmitted, and a single frame of data is up to 242 bytes; Uses and spread spectrum modulation technology, ultra-low sensitivity, extremely long distance transmission; the maximum transmission distance is greater than 7000 meters / 300kbps, the height is greater than 5 meters, non-urban open distance; the product supports frequencies of 915.8 MHz - 918.5MHz; 100mW transmit power; Very low receiving sensitivity -112dBm / 9.
4.Technical parameters parameter Smallest typical maximum unit condition Operating conditions Working voltage 1.8 range range of working -40 3.3 temperature 3.6 V 85 ℃ Current consumption Receive 17 mA current Emission 115 mA current Sleep current <3 uA @20dBm RF parameters Modulation 0.018 37.
5.
Figure 1. Product Dimensions 6.
crc16: 55 to data crc16 value, low byte first, high byte last See 6.2 for the definition of each command frame Data 08 Frame Abnormal AA This data does not require crc verification response Error frame 6.1. Data Frame 6.1.1.
Format: source address (4 bytes) + destination address (4 bytes) + payload 1) Source address: The source node address of the wireless data corresponding to this serial transmission 2) Destination address: The destination node address of the corresponding wireless data transmitted by the serial port, that is, the local address or broadcast address 第 10 页
6.1.3. About address The byte order of the address is not configured in the frame (see the command frame). The byte order given by the sample module is factory configured. The address gives an 8-bit bcd code for the label. For example, if the label is "06130273", the preset address is 0x06 0x13 0x02 0x73 6.1.4.
len: total package length (length from 55 to 16) Features cmd: set command sub_cmd: Descrip subcommand, 00 without tion subcommand: set value 第 12 页
crc16: 55 to the crc16 value of data, low byte first, high byte last Serial 55 AA LEN 05 01 01 FAD_L FAD_H N DATA CRC16 16 input Serial 55 AA LEN 05 01 02 FAD_L FAD_H N DATA CRC16 16 port loopback Setting parameters CMD:05 SUB_CMD: 01 fad_l, fad_h: the first address Descrip of the parameter storage n: the tion number of parameter bytes data: n bytes of parameter data Serial 55 AA LEN 05 00 01 FAD_L FAD_H N CRC16 16 input Serial 55 AA LEN 05 00 02 N DATA CRC16 16 port loopback Reading parameters
Wake rf module Sleep frame Serial 55 AA 0E 01 00 01 A0 A1 A2 A3 A4 CRC16 16 input Serial 55 AA 0E 01 00 02 A0 A1 A2 A3 A4 CRC16 16 port loopback CMD:01 Descripti SUB_CMD: 00 on The module receives this command frame, and the module enters the sleep state after responding Signal strength indicator Serial 55 AA 0A0200 0100 CRC16 16 input Serial 55 AA 0A0200 02 X CRC16 16 port loopback CMD:01 SUB_CMD: 00 Descripti X: the signal strength value of the last communication, on this value is the abso
6.3. Parameter setting and reading Note: After the wireless module sets the parameters, the new wireless parameters are enabled after the wireless module is powered off and then powered on.
take 06 CRC16 16 Among them, a4 should be guaranteed to always be 0 Outpu 0x100 t 1 Assu 55 AA 0D05 01 01 0C 10 me C power x is the power to be set, Values are hexadecimal 01 Set numbers 01, 02, 05, 08, X CRC16 16 read 55 AA 0C 05 00 01 0C 0b, 0e, 11, 14 10 take 01 CRC16 16 Set the module power to 1, 2, 5, 8, 11, 11, 14, respectively.
10: 0.9kbps 11: 0.5kbps 12: 0.27kbps AUX 0x101 Stat 0 1 Assu 55 AA 0D05 01 01 10 10 01 me When STime is in AUX state Unit: min STime CRC16 16 Set us read 55 AA 0C 05 00 01 10 inte take 01 CRC16 16 rval sett Power 0x101 ing -on 1 the 10 1 Assu 55 AA 0D05 01 01 11 10 01 When x is a0, power on and me output version information X CRC16 16 Set Information, for other mess read 55 AA 0C 05 00 01 11 age take 01 CRC16 16 10 values, output version information when power on stat 6.4.
7.Precautions for RF frequency point selection 1.The frequency setting range is 915.8 MHz - 918.5MHz, the frequency selection should avoid the integer multiple frequency of the crystal (its accessories ± 1MHz frequency can not be set) . 8.Transmit power and receiving sensitivity test After the module outputs the version information, you can test the transmit power, receive sensitivity, and sleep current through the serial port setting commands.
Receive sensitivity test command: 55 aa 09 07 00 01 ea 61 16 Serial port response: 55 aa 09 07 00 02 71 53 16, 第 19 页
The module starts the reception test. At this time, if the bit error rate is less than 1%, the module's red light flashes uniformly. After sending the receive sensitivity test command, it can be delayed for a period of time. 16 Module response 55 aa 11 08 00 02 xx xx xx xx yy yy yy yy crc16 16 Hibernation test: Send the hibernation command, the module enters the hibernation state, and the hibernation state requires the module to be powered on before entering other states.
{ if(uiCRCValue & 0x0001) { uiCRCValue >>= 1; uiCRCValue ^= CRC_POLY; } else { uiCRCValue >>= 1; } } } uiCRCValue ^= 0xFFFF; return uiCRCValue; } 9.3.
11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11 22 33 44 55 11
FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Validity of using the module certification: In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product.
