Technical information

Nonvolatile Parameter Database
2-118 AT+i Commands Reference Manual May 31, 2008
+iFLW - Set Flow Control Mode
Note: When setting Bit 0 (Host hardware flow control), the ~CTSH signal must be LOW
(enabled), otherwise W24 will return I/ERROR (063).
+iCPF - Active Communications Platform
Syntax: AT+iFLW=n
Sets the flow control mode.
Parameters: n=0 .. 7
Command Options:
n= Bit 0 0 = Host S/W flow control, using Wait/Continue control
characters.
1 = Host hardware flow control based on ~CTS/~RTS
hardware signals.
Bit 1 0 = No Modem flow control.
1 = Modem hardware flow control based on ~CTS/~RTS
hardware signals.
Bit 2 0 = All hardware control signals: ~CTS, ~RTS, DTR and
DSR are mirrored across W24 when transferring data
transparently to the DCE.
1 = Hardware signal mirroring is disabled.
Default: '0' (Host software flow control, no modem hardware flow
control).
Result Code:
I/OK If n is within limits. See Note.
I/ERROR Otherwise.
AT+iFLW~n Temporarily set the flow control mode for one session. The
permanent value will be restored after completing the next
session, both if the session was successful or not.
AT+iFLW? Returns current flow control mode followed by I/OK.
AT+iFLW=? Returns the message "0-7" followed by I/OK.
Syntax: AT+iCPF=n
Sets the active communications platform to either modem or
WLAN.
Parameters: n=0 .. 1
Command Options:
n=0 Sets active communications platform to dial-up or cellular
modem. When the modem is online, any character, including
<CR>, sent from the host that is not part of an AT+i command is
transferred directly to the modem.