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Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 1. Overview 1.1 Introduction E22-400T22S1C is a wireless serial port module (UART) based on ASR6505 RF chip. It has multiple transmission modes, working in the 410.125MHz~493.125MHz, (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual Forward error correction: The module has FEC forward error correction algorithm, which has high coding efficiency and strong error correction capability. In the case of sudden interference, it can actively correct the interfered data packets, greatly improving reliability and transmission distance.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual Main parameter Description Remark Test condition: clear and open area, antenna gain: 5dBi, Distance for reference 5500m antenna height: 2.5m,air data rate: 2.4kbps Can be configured via command as 32/64/128/240 TX length...
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Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual Name Direction Function Ground Ground Ground Ground Input Work with M1 to decide 4 working modes of module (not suspended, if not (weak pull-up) used, could be grounded). Input Work with M0 to decide 4 working modes of module (not suspended, if not (weak pull-up)...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 4. Connect to MCU Description(STM8L MCU) The UART module is TTL level. For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 5.2 Broadcasting transmission 5.3 Broadcasting address For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04; When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the ...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 5.6 AUX description AUX Pin can be used as indication for wireless send & receive buffer and self-check. It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent ...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 5.6.3 Configuration procedure of module Only happened when power-on resetting or exiting sleep mode 5.6.4 Notes for AUX Description For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX outputs high level.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 6.1 Mode switching Remark Users can combine M1 and M0 with high and low levels to determine the operating mode. Two GPIOs of the MCU can be used to control mode switching;...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 6.3 WOR mode(Mode 1) Type M0 = 1,M1 =0 Transmitting When defined as a transmitting party, a preamble is automatically added before transmitting. Receiving It can receive data normally, the receiving function is the same as mode 0.
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Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual Command format Description Command: C0+starting address+length+parameters Response: C1+starting address+length+parameters E.g 1: Channel is 0x09 command starting address length parameter Send: Set register Returen: C1 E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air data rate (1.2K).
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 7.2 Register description Read or Address Name Description Remark write Read/W ADDH(default 0) The module address is high byte and low byte. ADDH rite Note: When the module address is FFFF, it can be...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 101:3000ms 110:3500ms 111:4000ms Key high byte (default 0) Write only, read returns 0 Write CRYPT_H Used for user encryption to avoid intercepting airborne wireless data by similar modules. The module will internally use these two bytes as ...
As shown in the figure: the data sent by node 1, the nodes 2, 4 can receive the data sent by node 2, 4, and node 1 can also receive 9 Configuration instructions on computer The following figure shows the E22-400T22S1C configuration host computer display interface, the user can switch to the command mode through M0M1, and quickly configure and read the parameters on computer.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual In the configuration on computer, the module address, frequency channel, network ID, and key are all in decimal mode. The range of values of each parameter is: Network address: 0-65535...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other parts with large electromagnetic interference.; High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under ...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual Please check the stability of power source, the voltage cannot fluctuate too much. Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic ...
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T22S1C User manual 14 Antenna recommendation The antenna is an important role in the communication process. A good antenna can largely improve the communication system. Therefore, we recommend some antennas for wireless modules with excellent performance and reasonable price.
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