Operation Instructions; Entering Command Configuration Instructions; Command Overview; Command Error Code - Ebyte E810-DTU User Manual

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5 Operation Instructions

5.1 Entering Command Configuration Instructions

Note: In the normal working mode, the mode indicator flashes at 1Hz frequency; when entering the command
configuration mode, the indicator light flashes at 5Hz frequency. Whether it is software entry or hardware entry,
the configured parameters are valid after reset.
Switching from other modes to command mode (software entry):
The serial device continuously sends "+++" to the module. After the module receives "+++", the 3 second
timer expires and starts to start. If any AT command is received within the timeout period, it will successfully
switch to the configuration mode (after entering, The module indicator flashes at a frequency of 5 Hz).
At this point, the parameters can be configured. For the parameter list and parameter description, please refer
to the following.
After the parameter configuration is successful, the serial device sends the command "AT+ EXAT" to the
module. After receiving the command, the module returns "+OK" and exits the configuration mode and returns
to the pre-configuration mode. Then short-circuit the reset RESET pin and the parameters take effect. It is also
possible to reset the module with the command "AT+REBT" after successful configuration with the AT
command parameters.

5.2 Command overview

The AT command refers to the instruction set that the user transmits commands through the UART and the
module in the command mode. The format of the AT command is explained in detail later. After power-on, switch
to configuration mode and set the module through UART.
Timing for switching from transparent mode to command mode:
The serial device continuously sends "+++" to the module. After the module receives "+++", the 3 second
timer expires and starts to start. If any AT command is received within the timeout period, the switch is
successfully switched to the configuration mode.
Finally, the serial device sends the command "AT+ EXAT" to the module. After receiving the command, the
module returns "+OK" and exits the configuration. Then short-circuit the reset RESET pin and the parameters take
effect. It is also possible to reset the module with the command "AT+REBT" after successful configuration with the
AT command parameters.
Note: After the parameters are configured, the parameters must be valid after the reset.
Description: <CR>: ASCII code 0x0D
<LF>: ASCII code 0x0A

5.3 Command error code

Error code
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-1
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-3
-4
Description
Invalid command format
Invalid command
Invalid operator
Invalid parameter
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