Siemens AC75 Bedienungsanleitung Seite 496

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AC75 AT Command Set
19.8 AT^SSPI
s
AC75_ATC_V01.002 Page 496 of 569 10/30/06
Confidential / Released
19.8 AT^SSPI Serial Protocol Interface
The AT^SSPI command enables the module to be connected to external I²C or SPI devices.
The I²C/SPI datastream is mapped through an internal I²C/SPI driver to and from an ASCII hex protocol which
can be exchanged with an internal application (JAVA) or an external application via V24.
The AT^SSPI write command configures and activates the I²C/SPI interface and changes from command mode
into data mode. All values must be given in hexadecimal format (0 - 9, A - F) without "0x". For details on data
mode please refer to Section 19.8.3, Transmitting Data over AT Interface.
Caution:
I²C and SPI cannot be operated in parallel with USB. The USB interface will be disabled as soon as the I²C or
SPI channel is opened with AT^SSPI. To activate the USB interface again after closing the I²C or SPI channel
it is necessary to restart the AC75 module, either by switching the ignition line or entering the command
AT+CFUN=1,1. The Terminal program or host application connected with the USB interface must be closed
before activating the USB.
If I²C or SPI data mode is active the DCD line of the connected serial port goes high.
If I²C or SPI are opened from a Java application be sure to close the I²C or SPI channels before Java terminates.
Syntax
Test Command
AT^SSPI=?
Response(s)
^SSPI:(list of supported <basicConfiguration>s), (list of supported <delayOne>s), (list of supported
<delayTwo>s), (list of supported <wordLength>s), (list of supported <extendedSpiConfiguration>s)
OK
Read Command
AT^SSPI?
Response(s)
^SSPI: <connectionState>, <basicConfiguration>, <delayOne>, <delayTwo>, <wordLength>,
<extendedSpiConfiguration>
OK
ERROR
+CME ERROR: <err>
Write Command
AT^SSPI=[<basicConfiguration>[, <delayOne>[, <delayTwo>[, <wordLength>[,
<extendedSpiConfiguration>]]]]]
Response(s)
CONNECT
(indicates that ME has entered data mode)
ERROR
+CME ERROR: <err>
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last
SIEMENS - + + - + + + - + +
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