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Chengdu Ebyte Electronic Technology Co.,Ltd.

E22-400T22D User Manual

Copyright ©2012–2019

Chengdu Ebyte Electronic Technology Co.,Ltd.

4-9

purpose of broadcast is realized.

5.4 Monitor address

For example: Set the address of module A as 0xFFFF, and the channel as 0x04;

When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of

monitor is realized.

5.5 Reset

When the module is powered on, AUX outputs low level immediately, conducts hardware self-check and sets the
operating mode based on user’s parameters. During the process, the AUX remains low level. After the process
completed, the AUX outputs high level and starts to work as the operating mode combined by M1 and M0.
Therefore, users need to wait the AUX rising edge as the start of module’s normal work.

5.6 AUX description

AUX Pin can be used as indication for wireless sending & receiving 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 through UART, or whether the module is still in the process of self-check initialization.

5.6.1 Indication of UART output

To wake up external MCU

Содержание E22-400T22D

Страница 1: ...E22 400T22D User Manual SX1268 433 470MHz 160mW LoRa Wireless Module...

Страница 2: ...SSION 8 5 2 BROADCASTING TRANSMISSION 8 5 3 BROADCASTING ADDRESS 8 5 4 MONITOR ADDRESS 9 5 5 RESET 9 5 6 AUX DESCRIPTION 9 5 6 1 Indication of UART output 9 5 6 2 Indication of wireless transmitting 1...

Страница 3: ...y Co Ltd 2 9 CONFIGURATION INSTRUCTIONS ON COMPUTER 18 10 HARDWARE DESIGN 19 11 FAQ 20 11 1 COMMUNICATION RANGE IS TOO SHORT 20 11 2 MODULE IS EASY TO DAMAGE 20 11 3 BER BIT ERROR RATE IS HIGH 20 12 W...

Страница 4: ...mproving the confidentiality of user s data Support LBT function monitor the channel environmental noise before sending which can greatly improve the communication success rate of the module in harsh...

Страница 5: ...cause permanent damage to module Blocking power dBm 10 Chances of burn is slim when modules are used in short distance Operating temperature 40 85 Industrial grade 2 2 Operating parameter Main parame...

Страница 6: ...nce 5km Test condition clear and open area antenna gain 5dBi antenna height 2 5m air data rate 2 4kbps TX length 240 Byte Can be configured via command as 32 64 128 240 bytes per packet to transmit Bu...

Страница 7: ...of module not suspended if not used could be grounded 2 M1 Input weak pull up Work with M0 to decide 4 working modes of module not suspended if not used could be grounded 3 RXD Input TTL UART input c...

Страница 8: ...e voltage range 2 3 5 5V DC 7 GND Power supply Ground 8 Fixed hole Fixed hole Connect to GND on the module 9 Fixed hole Fixed hole Connect to GND on the module 10 Fixed hole Fixed hole Connect to GND...

Страница 9: ...Technology Co Ltd 4 8 5 Function description 5 1 Fixed transmission 5 2 Broadcasting transmission 5 3 Broadcasting address For example Set the address of module A as 0xFFFF and the channel as 0x04 Wh...

Страница 10: ...lf check and sets the operating mode based on user s parameters During the process the AUX remains low level After the process completed the AUX outputs high level and starts to work as the operating...

Страница 11: ...UART data of the module have been transmitted already maybe the last packet of data is still in transmission 5 6 3 Configuration procedure of the module Only happened when power on resetting or exiti...

Страница 12: ...tching After changing M1 and M0 If the module is idle after 1ms it can start working according to the new mode If the serial port data of the module has not been transmitted through the wireless the n...

Страница 13: ...o the user s MCU s operation convenience and can reduce the workload of the entire system as much as possible improve system efficiency and reduce power consumption 6 2 Normal mode Mode 0 Type M0 0 M1...

Страница 14: ...s Response C1 starting address length parameters E g 1 Channel is 0x09 command starting address length parameter Send C0 05 01 09 Return C1 05 01 09 E g 2 Configure module address 0x1234 network addre...

Страница 15: ...en communicating with each other they should be set to the same 03H Read Write REG0 7 6 5 UART Serial port rate bps For the two modules that communicate with each other the serial port baud rate can b...

Страница 16: ...er Power and current are nonlinear and power efficiency is highest at maximum power The current does not decrease in proportion to the decrease in power 0 0 22dBm default 0 1 17dBm 1 0 13dBm 1 1 10dBm...

Страница 17: ...a wake up code is added when transmitting data 2 1 0 WOR period Valid only for mode 1 Period T 1 WOR 500ms maximum 4000ms minimum 500ms The longer the WOR monitoring interval period the lower the aver...

Страница 18: ...low level Repeater networking rules 1 Forwarding rules the repeater can forward data in both directions between two NETIDs 2 In repeater mode ADDH ADDL is no longer used as the module address and it...

Страница 19: ...The following figure shows the E22 400T22D configuration host computer display interface users can switch to the command mode through M0M1 and quickly configure and read the parameters on computer In...

Страница 20: ...d to reserve more than 30 of the margin so the whole machine is beneficial for long term stable operation The module should be as far away as possible from the power supply transformers high frequency...

Страница 21: ...sea The signal will be affected when the antenna is near metal object or put in a metal case Power register was set incorrectly air data rate is set as too high the higher the air data rate the shorte...

Страница 22: ...3 470M 22 5 SMD 16 26 TTL E22 400T22D SX1268 433 470M 22 5 DIP 21 36 TTL E22 400T30S SX1268 433 470M 30 10 SMD 20 40 5 TTL E22 900T22S SX1262 868 915M 22 5 SMD 16 26 TTL E22 900T30S SX1262 868 915M 30...

Страница 23: ...MA J 3 5 185 100 Small sucker antenna cost effective TX433 XP 200 Sucker antenna 433M SMA J 4 0 190 200 Medium sucker antenna low power consumption TX433 XPH 300 Sucker antenna 433M SMA J 6 0 965 300...

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