Particle P1 User manual

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Functionaldescription
OVERVIEW
FEATURES
Interfaces
BLOCKDIAGRAM
POWER
RF
FCCAPPROVEDANTENNAS
PERIPHERALSANDGPIO
RGBLED,SETUPANDRESETBUTTON
JTAGANDSWD
EXTERNALCOEXISTENCEINTERFACE
MemoryMap
STM32F205RGY6FLASHLAYOUTOVERVIEW
DCTLAYOUT
MEMORYMAP(COMMON)
MEMORYMAP(MODULARFIRMWARE-DEFAULT)
MEMORYMAP(MONOLITHICFIRMWARE-OPTIONAL)
Pinandbuttondefinition
PINMARKINGS
PINDESCRIPTION
PINOUTDIAGRAM
COMPLETEP1MODULEPINLISTING
Technicalspecification
ABSOLUTEMAXIMUMRATINGS
RECOMMENDEDOPERATINGCONDITIONS
WI-FISPECIFICATIONS
I/OCHARACTERISTICS
Mechanicalspecifications
OVERALLDIMENSIONS
P1MODULEDIMENSIONS
P1MODULERECOMMENDEDPCBLANDPATTERN
P1ReferenceDesignSchematic
SCHEMATIC-USB
SCHEMATIC-POWER
SCHEMATIC-USERI/O
SCHEMATIC-P1WI-FIMODULE
P1ReferenceDesignLayout
P1REFERENCEDESIGNTOPLAYER(GTL)
P1REFERENCEDESIGNBOTTOMLAYER(GBL)
Recommendedsolderreflowprofile

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Orderinginformation
Qualificationandapprovals
Producthandling
TAPEANDREELINFO
MOISTURESENSITIVITYLEVELS
ESDPRECAUTIONS
Defaultsettings
Glossary
FCCICCEWarningsandEndProductLabelingRequirements
Revisionhistory
KnownErrata
Contact

Functionaldescription
TheP1isParticle'stinyWi-FimodulethatcontainsboththeBroadcomWi-Fichipanda
reprogrammableSTM32F205RGY632-bitARMCortex-M3microcontroller.TheP1comespreloaded
withParticlefirmwarelibraries,justlikeourdevkits,andit'sdesignedtosimplifyyourtransitionfrom
prototypetoproduction.TheP1isthePØ'sbigbrother;it'sabitbiggerandatadmoreexpensive,but
itincludessomeextraflashandanantennaandu.FLconnectoronboard.Particleprovidesfree
accesstoParticleCloudforprototyping.PaidtiersofParticleCloudstartwhenyoucreateaproduct
withmorethan25devices.
ParticleP1Wi-Fimodule
BroadcomBCM43362Wi-Fichip
802.11b/g/nWi-Fi
STM32F205RGY6120MhzARMCortexM3
1MBflash,128KBRAM
1MBexternalSPIflash(MX25L8006E)
IntegratedPCBantenna
Integratedu.FLconnectorforexternalantenna
IntegratedRFswitch
25Mixed-signalGPIOandadvancedperipherals
Opensourcedesign
Real-timeoperatingsystem(FreeRTOS)
SoftAPsetup
FCC,CEandICcertified
OVERVIEW
FEATURES

Interfaces
PowertotheP1issuppliedvia3differentinputs:VBAT_WL(pin2&3),VDDIO_3V3_WL(pin5),
VDD_3V3(pin26&27).Optionally+3.3VmaybesuppliedtoVBAT_MICRO(pin38)fordataretention
inlowpowersleepmodes.Eachoftheseinputsalsorequiresa0.1uFand10uFceramicdecoupling
capacitor,locatedascloseaspossibletothepin(seeFig1).Thevoltageshouldberegulatedbetween
3.0VDCand3.6VDC.(PleaserefertoAbsoluteMaximumRatingsformoreinfo).
Typicalaveragecurrentconsumptionis80mAwith5V@inputoftherecommendedSMPSpower
supplywithWi-Fion.Deepsleepquiescentcurrentistypically80uA(PleaserefertoRecommended
OperatingConditionsformoreinfo).WhenpoweringtheP1makesurethepowersupplycanhandle
600mAcontinuous.Ifalesserpowersupplyisprovided,peakcurrentsdrawnfromtheP1when
transmittingandreceivingwillresultinvoltagesagattheinputwhichmaycauseasystembrown
outorintermittentoperation.
Warning:WhenpoweringtheP1fromlongwires,careshouldbetakentoprotectagainstdamaging
voltagetransientsifusingthesameregulatorasisusedonthePhoton.FromtheRichtekdatasheet:
Whenaceramiccapacitorisusedattheinputandthepowerissuppliedbyawalladapterthroughlong
wires,aloadstepattheoutputcaninduceringingattheinput,VIN.Atbest,thisringingcancoupletothe
outputandbemistakenasloopinstability.Atworst,asuddeninrushofcurrentthroughthelongwirescan
potentiallycauseavoltagespikeatVINlargeenoughtodamagethepart.
Toavoidthesevoltagespikes,keepinputwiringasshortaspossible.Iflongwiresareunavoidable,it
isadvisabletoadda5.1VzenerdiodeorsimilartransientsuppressiondevicefromVINtoGND.
Anothertechniqueisaddingmorecapacitancetotheinputusinganelectrolyticcapacitor.Please
refertoAN-88byLinearforagooddiscussiononthistopic.
BLOCKDIAGRAM
POWER


Fig.1Recommendedpowerconnectionswithdecouplingcapacitors.
TheRFsectionoftheP1includesanon-boardPCBtraceantennaandau.FLconnectorwhichallows
theusertoconnectanexternalantenna.ThesetwoantennaoutputsareselectableviaauserAPI,
madepossiblebyanintegratedRFswitch.
ThedefaultselectedantennawillbethePCBantenna.
TheareasurroundingthePCBantennaonthecarrierPCBshouldbefreeofgroundplanesandsignal
tracesformaximumWi-Fiperformance.
AntennaType Manufacturer MFG.Part# Gain
Dipoleantenna LumenRadio 104-1001 2.15dBi
PCBAntenna Included - -
RF
FCCAPPROVEDANTENNAS

TheP1modulehastonofcapabilityinasupersmallfootprint,withanalog,digitaland
communicationinterfaces.
Note:P1pinnameswillbepreservedastheyarenamedintheUSIdatasheet,howeverforthescope
ofthisdatasheetwewillalsorefertothemastheirPhotonandcodeequivalents,i.e.D7insteadof
MICRO_JTAG_TMSandA2insteadofMICRO_GPIO_13.Thiswillhelptosimplifydescriptions,while
providingaquickreferenceforcodethatcanbewrittenfortheP1suchas intvalue=
analogRead(A2);
Peripheral
Type Qty
Input(I)/
Output(O)
FT[1]/
3V3[2]
Digital 24 I/O FT/3V3
Analog(ADC) 13 I 3V3
Analog(DAC) 2 O 3V3
SPI 2 I/O 3V3
I2S 1 I/O 3V3
I2C 1 I/O FT
CAN 1 I/O 3V3[4]
USB 1 I/O 3V3
PWM 12[3] O 3V3
Notes:
[1]FT=5.0Vtolerantpins.AllpinsexceptA3andDACare5Vtolerant(whennotinanalogmode).If
usedasa5Vinputthepull-up/pull-downresistormustbedisabled.
[2]3V3=3.3Vmaxpins.
[3]PWMisavailableonD0,D1,D2,D3,A4,A5,WKP,RX,TX,P1S0,P1S1,P1S6withacaveat:PWMtimer
peripheralisduplicatedontwopins(A5/D2)and(A4/D3)for10totalindependentPWMoutputs.For
example:PWMmaybeusedonA5whileD2isusedasaGPIO,orD2asaPWMwhileA5isusedasan
analoginput.HoweverA5andD2cannotbeusedasindependentlycontrolledPWMoutputsatthe
sametime.P1S6requiresSystemFeatureWi-FiPowersaveClocktobedisabled.SeeSystemFeatures
inFirmwareReference.
[4]Technicallythesepinsare5.0Vtolerant,butsinceyouwouldn'toperatethemwitha5.0V
transceiverit'spropertoclassifythemas3.3V.
WhenusingtheP1module,itisveryimportanttorememberthatyourdevicemusthaveanRGBLED
toshowtheusertheconnectivitystatus.AlsorequiredisaSETUPandRESETbuttontoentervarious
DeviceModes.BydefaulttheRGBLEDoutputsareconfiguredforaCommonAnodetypeofLED.
ThesecomponentsshouldbewiredaccordingtotheP1ReferenceDesign-UserI/O.RGBpinsmay
beaccessedincodeas:RGBR,RGBGandRGBB.
PERIPHERALSANDGPIO
RGBLED,SETUPANDRESETBUTTON

PinD3throughD7areJTAGinterfacepins.ThesecanbeusedtoreprogramyourP1bootloaderor
userfirmwareimagewithstandardJTAGtoolssuchastheST-Linkv2,J-Link,R-Link,OLIMEXARM-
USB-TINI-H,andalsotheFTDI-basedParticleJTAGProgrammer.Ifyouareshortonavailablepins,
youmayalsouseSWDmodewhichrequireslessconnections.
Photon
Pin JTAG SWD
STM32F205RGY6
Pin
P1Pin
# P1PinName
Default
Internal[1]
D7 JTAG_TMS SWD/SWDIO PA13 54 MICRO_JTAG_TMS ~40kpull-up
D6 JTAG_TCK CLK/SWCLK PA14 55 MICRO_JTAG_TCK ~40kpull-down
D5 JTAG_TDI PA15 53 MICRO_JTAG_TDI ~40kpull-up
D4 JTAG_TDO PB3 52 MICRO_JTAG_TDO Floating
D3 JTAG_TRST PB4 51 MICRO_JTAG_TRSTN ~40kpull-up
3V3 Power Power
GND Ground Ground
RST Reset Reset
Notes:[1]DefaultstateafterresetforashortperiodoftimebeforethesepinsarerestoredtoGPIO(if
JTAGdebuggingisnotrequired,i.e. USE_SWD_JTAG=y isnotspecifiedonthecommandline.)
Astandard20-pin0.1"shroudedmaleJTAGinterfaceconnectorshouldbewiredasfollows:
(clickto
stopsquinting)
JTAGANDSWD

TheP1supportscoexistencewithBluetoothandotherexternalradiosviathreepinsavailableonthe
P1module.
Whentworadiosoccupyingthesamefrequencybandareusedinthesamesystem,suchasWi-Fi
andBluetooth,acoexistenceinterfacecanbeusedtocoordinatetransmitactivity,toensureoptimal
performancebyarbitratingconflictsbetweenthetworadios.
P1PinName
P1Pin
# I/O Description
BTCX_RF_ACTIVE 57 I Coexistencesignal:Bluetoothisactive
BTCX_STATUS 56 I Coexistencesignal:BluetoothprioritystatusandTX/RXdirection
BTCX_TXCONF 58 O OutputgivingBluetoothpermissiontoTX
WhenthesepinsareprogrammedtobeusedasaBluetoothcoexistenceinterface,they'resetas
highimpedanceonpowerupandreset.
EXTERNALCOEXISTENCEINTERFACE

MemoryMap
Bootloader(16KB)
DCT1(16KB),storesWi-Ficredentials,keys,mfginfo,systemflags,etc..
DCT2(16KB),swapareaforDCT1
EEPROMemulationbank1(16KB)
EEPROMemulationbank2(64KB)
Systemfirmware(512KB)[256KBWi-Fi/comms+256KBhal/platform/services]
Factorybackup,OTAbackupanduserapplication(384KB)[3x128KB]
TheDCTareaofflashmemoryhasbeenmappedtoaseparateDFUmediadevicesothatwecan
incrementallyupdatetheapplicationdata.Thisallowsoneitem(say,serverpublickey)tobe
updatedwithouterasingtheotheritems.
DCTlayoutin release/stable foundhereinfirmware.
Region Offset Size
systemflags 0 32
version 32 2
deviceprivatekey 34 1216
devicepublickey 1250 384
ipconfig 1634 120
featureflags 1754 4
countrycode 1758 4
claimcode 1762 63
claimed 1825 1
ssidprefix 1826 26
devicecode 1852 6
versionstring 1858 32
dnsresolve 1890 128
reserved1 2018 64
serverpublickey 2082 768
padding 2850 2
flashmodules 2852 100
productstore 2952 24
antennaselection 2976 1
cloudtransport 2977 1
altdevicepublickey 2978 128
altdeviceprivatekey 3106 192
altserverpublickey 3298 192
altserveraddress 3490 128
deviceid 3618 12
radioflags 3630 1
modebuttonmirror 3631 32
STM32F205RGY6FLASHLAYOUTOVERVIEW
DCTLAYOUT

ledmirror 3663 96
ledtheme 3759 64
reserved2 3823 435
Note:Writing0xFFtooffset34(DEFAULT)or3106(ALTERNATE)willcausethedevicetore-generatea
newprivatekeyonthenextboot.AlternatekeysarecurrentlyunsupportedontheP1butareusedon
theElectronasUDP/ECCkeys.Youshouldnotneedtousethisfeatureunlessyourkeysare
corrupted.
//RegenerateDefaultKeys
echo-e"\xFF">fillbyte&&dfu-util-d2b04:d00a-a1-s34-Dfillbyte
//RegenerateAlternateKeys
echo-e"\xFF">fillbyte&&dfu-util-d2b04:d00a-a1-s3106-D
fillbyte
Region StartAddress EndAddress Size
Bootloader 0x8000000 0x8004000 16KB
DCT1 0x8004000 0x8008000 16KB
DCT2 0x8008000 0x800C000 16KB
EEPROM1 0x800C000 0x8010000 16KB
EEPROM2 0x8010000 0x8020000 64KB
Region StartAddress EndAddress Size
SystemPart1 0x8020000 0x8060000 256KB
SystemPart2 0x8060000 0x80A0000 256KB
UserPart 0x80A0000 0x80C0000 128KB
OTABackup 0x80C0000 0x80E0000 128KB
FactoryBackup 0x80E0000 0x8100000 128KB
Region StartAddress EndAddress Size
Firmware 0x8020000 0x8080000 384KB
FactoryReset 0x8080000 0x80E0000 384KB
Unused(factoryresetmodular) 0x80E0000 0x8100000 128KB
MEMORYMAP(COMMON)
MEMORYMAP(MODULARFIRMWARE-DEFAULT)
MEMORYMAP(MONOLITHICFIRMWARE-OPTIONAL)