can fix the target AP by modifying this parameter to fix BSSID address. Once
the parameter is fixed,the module will never connect to the network without
suited BSSID.
3.4.4.6
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Channel
Table 4-22 Channel
Parameter name
Parameter
Correlative Command
Channel Channel
Number
AT+CHL
Description
Used to specify the channel of WiFi network, options include:
Auto
Channel
1~14
The default setting of system is Auto, ordinarily user doesn’t need to modify
this parameter. When join to WiFi network, the module will automatically scan
all channels to detect the target network.The time module needs to scan each
channel is 150ms,and the completion of all channel scan takes about 2s.In
order to reduce the scanning time and improve networking speed, user can
specify channel number through modifying this parameter.What should be
noted,Once user set it to fixed channels,the module scans only the specified
channels,if the target AP has changed the channel number,module will never
connect to the network successfully.
3.4.4.7
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Auto Retry
Table 4-23 Auto Retry
Parameter name
Parameter
Correlative Command
Auto Retry
Auto Retry Count
AT+CHL
Description
This parameter is only effective in auto-work mode,it ‘s used to specify the
auto retry number when networking is failed or network disconnects
unnaturally,options include:
Never
Ever
1~254
The default setting of system is Ever
