User's Manual

Table Of Contents
Nonvolatile Parameter Database
AT+i Programmer‘s Manual Version 8.32 34-23
34.3.15 +iFLW Set Flow Control Mode
Syntax:
AT+iFLW=n
Sets the flow control mode.
Parameters:
n=0 .. 7
Command Options:
n=
Bitmapped flags:
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 iChip 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.
Note: When setting Bit 0 (Host hardware flow control), the ~CTSH signal must
be LOW (enabled), otherwise iChip will return I/ERROR (063).