User's Manual

Table Of Contents
Nonvolatile Parameter Database
AT+i Programmer‘s Manual Version 8.32 34-37
34.3.28 +iRRHW iChip Readiness Hardware Pin
Syntax:
AT+iRRHW=<pin>
Defines which of iChip‘s general-purpose I/O pins
(GPIO) will be asserted Low to indicate iChip
readiness to the host. iChip readiness indication is
specified by the RRA parameter.
Parameters:
pin=0
No hardware indication is given.
pin=1-32
Pins 1-32 of PIOA (general-purpose I/O pins group A)
pin=33-64
Pins 1-32 of PIOB (general-purpose I/O pins group B)
pin=65-96
Pins 1-32 of PIOC (general-purpose I/O pins group C)
Default:
0 (no hardware indication is given)
Result Code:
I/OK
If pin is within limits
I/ERROR
Otherwise
AT+iRRHW?
Reports the current value followed by I/OK.
AT+iRRHW=?
Returns the message “0-96” followed by I/OK.
Note: Before specifying the I/O pin for this parameter, it is recommended that you
consult the pin-out section of the iChip datasheet. Incorrect selection of pin might cause
unexpected iChip behavior.