1
、
Open the serial debugging software,such as serial master,set the serial parameters
to 115200bps/8 bits of data bits/1 bit of stop bits/no parity of parity bit/no flow control.
2
、
Input ‘at+’(no contain quotation marks and contain enter) in the sending columnof
the software,choose periodic sending,the period is set to 50ms.
3
、
Reset the module,if it return ‘+OK’,then stop the periodic sending.
4
、
Send the command’AT+QVER’ to look over the return message,if the message
includes B1.xx field,then it joins in bootloader mode successfully,otherwise it’s not
in,retry from the 2th approach.
5
、
Send the command’AT+QVER’(no return).
6
、
Wait for 1 second,and reset the module,then it can be resume to the manufacturer
state.
30B35B35B35B
Q12
：
In Wireless connection state,why can not the specified module be
searched for?
A: The reasons includes,
The signal between the netcard and the specified module is weak.
System password of wireless connection setting is not consistent with the specified
module.
MAC address in wireless connection setting is specified.
31B36B36B36B
Q13:
In some environment the module used
，
why is the quality of wireless
connection always bad,and how to improve the wireless transmission?
A: The reasons which cause bad quality of wireless connection are mulriple,such as
those,the placement of AP is not reasonable, the distance between AP and module is too
far,there are some obvious screens or shelter between AP and module,in the environment
module works there are some disturbance of 2.4G band and so on.Some environmental
problems can’t be resolved fundamentally, it can be only reduced for adverse effects with
some methods, user can try to do the changes as follow,
1
、
Lay AP in open and no obvious shelter environment as much as possible, in particular,
to avoid large areas of metal and the corners of wall.
