At Parameter Analysis; Notes For Serial Port Upgrade Firmware - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.
AT+NETID=?
AT+KEY=?
AT+DELAY=?

9.2 AT parameter analysis

When the serial port receives the correct instruction, the serial port returns "instruction =OK", otherwise it returns "=
ERR"
Instruction parameters
Baud (serial port rate)
Parity (Serial port check bit)
Rate (air rate)
Packet (Packet length)
Role (WOR role)
Period (WOR Cycle)
Power (transmit power)
Mode (Transport mode)
Router (Relay mode)
LBT(listen before talk)
Erssi (Environmental RSSI)
Data _ rssi (Data RSSI)
Addr (module address)
Channel (Module channel)
Netid(network ID)
Key(cipher code)
Delay (WOR delay dormancy)
Note 1: Different module sets for different powers. You can check the transmitting power in Section 8.2 of the manual.

9.3 Notes for serial port upgrade firmware

If the customer needs to upgrade the firmware, it needs to find the corresponding BIN file provided by the official,
and then use the official provided upper machine to upgrade the firmware. Generally, the user does not need to upgrade
the firmware, so do not use the "AT + IAP" command.
The necessary pins for upgrade must be introduced (M1, M0, AUX, TXD, RXD, VCC, GND), and then send "AT
+ IAP" command into the upgrade mode. If you need to exit the IAP upgrade mode, you need to stay on and wait for 60
seconds, the program will automatically exit, otherwise even if the restart, it will enter the upgrade mode indefinitely.
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
channel
Query network ID
Query module key
Query WOR delay
dormancy time
Note 1
AT+NETID=2
Read is not supported
(security considerations)
AT+DELAY=1000
Parameter meaning
0:1200 1:2400 2:4800
4:19200 5:38400 6:57600
0:8N1 1:8O1 2:8E1
0:2.4K 1:2.4K 2:2.4K
4:9.6K 5:19.2K 6:38.4K
0:240 1:128 2:64
0: receive 1: send
0:500ms 1:1000ms
4:2500ms 5:3000ms
0:33dBm 1:30dBm
0: transparent 1: fixed point
0: Off 1: On
0: Off 1: On
0: Off 1: On
0: Off 1: On
Module address 0~65535 (10 r)
Module channel 0~80 (10 decimal system)
Module network 0~255 (10 r)
Module key 0~65535 (10 r)
Delay hibernation 0~65535 (10 decimal point)
E90-DTU(900SL33) User Manual
at 433.125M
The return network ID is 2
return ERR
The return WOR delay
sleep time is 1000ms
3:9600
7:115200
3:8N1
3:4.8K
7:62.5K
3:32
2:1500ms 3:2000ms
6:3500ms 7:4000ms
2:27dBm 3:24dBm
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