Specifications

CUSTOMATCOMMANDS
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157 HSPA+ATCommandsReferenceGuide
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ParametersandValues
<pin> GPIOpinnumber.Rangeisfrom1toavaluethatdependsonthehardware.
NewSocketmodemsupportGPIO0toGPIO3.
NewMTPCIE‐xsupportGPIO1toGPIO3.
<mode> <mode>‐Meaningdependson<dir>setting:
0 Nomeaningif<dir>=0‐INPUT
‐outputpinclearedto0(Low)if<dir>=1‐OUTPUT

‐nomeaningif<dir>=2‐ALTERNATEFUNCTION
‐nomeaningif<dir>=3–TRISTATEPULLDOWN
1 Nomeaningif<dir>=0‐INPUT
‐outputpinsetto1(High)if<dir>=1‐OUTPUT
‐nomeaningif<dir>=2‐ALTERNATEFUNCTION
‐nomeaningif<dir>=3–TRISTATEPULLDOWN
2 Reportsthereadvaluefromthein
putpinif<dir>=0‐INPUT
‐Reportsthereadvaluefromtheinputpinif<dir>=1‐OUTPUT
‐Reportsanomeaningvalueif<dir>=2‐ALTERNATEFUNCTION
‐Reportsanomeaningif<dir>=3–TRISTATEPULLDOWN
<dir> GPIOpindirection
0‐pindirectionisINPUT
1‐
pindirectionisOUTPUT
2‐pindirectionisALTERNATEFUNCTION.SeeNotessection.
3‐pinissettoPULLDOWN.SeeNotessection.
Notes
 When<mode>=2(and<dir>isomitted)thecommandreportsthedirectionandvalueofpinGPIO<pin>inthe
format:
#GPIO:<dir>,<stat>
where:
<dir> CurrentdirectionsettingfortheGPIO<pin>.
<stat> 
 LogicvaluereadfrompinGPIO<pin>inthecasethepin<dir>issettoinput.
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LogicvaluepresentinoutputofthepinGPIO<pin>inthecasethepin<dir>is
currentlysettooutput.
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NomeaningvalueforthepinGPIO<pin>inth
ecasethepin<dir>issetto
alternatefunctionorTristatepulldown
 "ALTERNATEFUNCTION"valueisvalidonlyforfollowingpins:
 GPIO4‐alternatefunctionis“RFTransmissionControl”
 GPIO5‐alternatefunctionis“RFTransmissionMonitor”
 GPIO6‐alternatefunctionis"AlarmOu tput"(see+CALA)
 GPIO7‐alternatefunctionis"BuzzerOutput"(see#SRP)
 Whileusingthepinsinthealternatefunction,theGPIOread/writeaccesstothatpinisnotaccessibleAvoid
access.