Datasheet

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)
DeviceOS(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