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ram investigation notes
This commit is contained in:
geeksville
parent
d9ab6986ad
commit
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3
bin/dump-ram-users.sh
Executable file
3
bin/dump-ram-users.sh
Executable file
@ -0,0 +1,3 @@
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arm-none-eabi-readelf -s -e .pio/build/nrf52dk/firmware.elf | head -80
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nm -CSr --size-sort .pio/build/nrf52dk/firmware.elf | grep '^200'
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@ -1,8 +1,8 @@
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# High priority
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- nrf52 free memory https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/hathach-memory-map
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- modem sleep should work if we lower serial rate to 115kb?
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- encryption review findings writeup
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- NRF52 BLE
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- cubecell
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- DSR
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@ -43,6 +43,7 @@ During the beta timeframe the following improvements 'would be nice'
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Items after the first final candidate release.
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- dynamic frequency scaling could save a lot of power on ESP32, but it seems to corrupt uart (even with ref_tick set correctly)
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- Change back to using a fixed sized MemoryPool rather than MemoryDynamic (see bug #149)
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- scan to find channels with low background noise? (Use CAD mode of the RF95 to automatically find low noise channels)
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- If the phone doesn't read fromradio mailbox within X seconds, assume the phone is gone and we can stop queing location msgs
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@ -2,6 +2,11 @@
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## Misc work items
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RAM investigation.
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nRF52832-QFAA 64KB ram, 512KB flash vs
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nrf52832-QFAB 32KB ram, 512kb flash
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nrf52840 256KB RAM, 1MB flash
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platform.json
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"framework-arduinoadafruitnrf52": {
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188
docs/software/ramusage-nrf52.txt
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188
docs/software/ramusage-nrf52.txt
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@ -0,0 +1,188 @@
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23K + messages
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+ heap of 30ish packets, 300ish bytes per packet: 8KB
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+ 14KB soft device RAM
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therefore:
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a) we should store all ToPhone message queued messages compressed as protobufs (since they will become that anyways)
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b) a smarter MeshPacket in memory representation would save about 4KB of RAM?
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2000790c 00003558 B devicestate // 16KB
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2000b53c 00001000 b _cache_buffer // 4KB flash filesystem support
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20003b1c 000006b0 B console
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2000d5f4 00000400 b vApplicationGetTimerTaskMemory::uxTimerTaskStack
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2000da04 00000400 b _acUpBuffer
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2000c558 0000036c B Bluefruit
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2000c8d8 00000358 b _cdcd_itf
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2000e54c 00000258 B _midid_itf
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2000d0dc 00000200 b ucStaticTimerQueueStorage.9390
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2000e044 00000200 b _mscd_buf
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2000e284 000001cc b _vendord_itf
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2000d410 00000190 b vApplicationGetIdleTaskMemory::uxIdleTaskStack
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2000374c 0000016c D __global_locale
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2000de48 0000012c B USBDevice
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2000afa4 00000100 b Router::send(_MeshPacket*)::bytes
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2000aea4 00000100 b Router::perhapsDecode(_MeshPacket*)::bytes
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200039b0 000000f4 B powerFSM
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20004258 000000f0 B screen
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2000cd7c 000000c4 b _dcd
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2000cc68 000000c0 b _usbd_qdef_buf
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2000b3c4 000000bc B Wire
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2000cef4 000000a8 B Serial2
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2000ce4c 000000a8 B Serial1
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2000e498 000000a8 B _SEGGER_RTT
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2000b498 000000a4 B InternalFS
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2000dfb8 0000008c b _hidd_itf
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2000b260 00000088 b meshtastic::normalFrames
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2000cfdc 00000064 b pxReadyTasksLists
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2000b340 00000060 b meshtastic::drawTextMessageFrame(OLEDDisplay*, OLEDDisplayUiState*, short, short)::tempBuf
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200036ec 00000060 d impure_data
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2000b104 00000060 B bledfu
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2000b0a4 00000060 B blebas
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20003684 00000058 D _usbd_qdef
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200038c0 00000058 d tzinfo
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2000d5a0 00000054 b vApplicationGetTimerTaskMemory::xTimerTaskTCB
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2000d3bc 00000054 b vApplicationGetIdleTaskMemory::xIdleTaskTCB
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2000d308 00000050 b xStaticTimerQueue.9389
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2000b1f4 00000050 B hrmc
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2000b1a4 00000050 B bslc
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20004360 0000004c B service
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2000d374 00000048 b m_cb
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2000df74 00000042 b _desc_str
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2000cd3c 00000040 b _usbd_ctrl_buf
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20004214 00000040 B realRouter
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2000e244 00000040 b _mscd_itf
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2000b164 00000040 B bledis
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20003634 00000038 d _InternalFSConfig
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2000cc30 00000031 b _usbd_dev
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2000398c 00000020 B periodicScheduler
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2000cfa4 00000020 b callbacksInt
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2000de10 0000001f b fw_str.13525
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20003974 00000018 b object.9934
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2000ae68 00000018 B nodeDB
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2000366c 00000018 d _cache
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2000b314 00000014 b meshtastic::drawNodeInfo(OLEDDisplay*, OLEDDisplayUiState*, short, short)::signalStr
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2000b300 00000014 b meshtastic::drawNodeInfo(OLEDDisplay*, OLEDDisplayUiState*, short, short)::lastStr
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2000b2ec 00000014 b meshtastic::drawNodeInfo(OLEDDisplay*, OLEDDisplayUiState*, short, short)::distStr
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200041e0 00000014 b getDeviceName()::name
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2000d0b8 00000014 b xTasksWaitingTermination
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2000d0a4 00000014 b xSuspendedTaskList
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2000d08c 00000014 b xPendingReadyList
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2000d06c 00000014 b xDelayedTaskList2
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2000d058 00000014 b xDelayedTaskList1
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2000d2f0 00000014 b xActiveTimerList2
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2000d2dc 00000014 b xActiveTimerList1
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2000b480 00000014 B SPI
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2000c8c4 00000014 B Serial
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2000cd28 00000014 b _ctrl_xfer
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2000de30 00000011 b serial_str.13534
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2000c544 00000010 b BLEAdvertising::_start(unsigned short, unsigned short)::gap_adv
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20003614 00000010 d meshtastic::btPIN
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2000434c 00000010 b sendOwnerPeriod
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2000ae8c 00000010 b staticPool
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2000e484 00000010 B xQueueRegistry
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20003b04 00000010 B stateSERIAL
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20003af4 00000010 B stateSDS
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20003ae4 00000010 B stateON
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20003ad4 00000010 B stateNB
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20003ac4 00000010 B stateLS
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20003ab4 00000010 B stateDARK
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20003aa4 00000010 B stateBOOT
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200041f8 00000010 B ledPeriodic
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2000b244 00000010 B hrms
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2000d9f4 00000010 b _acDownBuffer
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2000b3b8 0000000c B preflightSleep
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20004208 0000000c B powerStatus
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2000e540 0000000c B nrf_nvic_state
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2000b3ac 0000000c B notifySleep
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2000b3a0 0000000c B notifyDeepSleep
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2000e463 0000000b b __tzname_std
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2000e458 0000000b b __tzname_dst
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2000b338 00000008 b meshtastic::estimatedHeading(double, double)::oldLon
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2000b330 00000008 b meshtastic::estimatedHeading(double, double)::oldLat
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200041d0 00000008 b zeroOffsetSecs
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2000ae80 00000008 b spiSettings
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200038b8 00000008 D _tzname
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20003b14 00000008 B noopPrint
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2000cfc4 00000008 b channelMap
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2000cf9c 00000008 b callbackDeferred
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200043ac 00000006 b ourMacAddr
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2000435c 00000004 b MeshService::onGPSChanged(void*)::lastGpsSend
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2000b32c 00000004 b meshtastic::estimatedHeading(double, double)::b
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2000b328 00000004 b meshtastic::drawNodeInfo(OLEDDisplay*, OLEDDisplayUiState*, short, short)::simRadian
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2000362c 00000004 d meshtastic::Screen::setup()::bootFrames
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20003628 00000004 d meshtastic::Screen::handleStartBluetoothPinScreen(unsigned long)::btFrames
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200039ac 00000004 b onEnter()::lastPingMs
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2000ae9c 00000004 b generatePacketId()::i
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2000ae88 00000004 B RadioLibInterface::instance
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2000b2e8 00000004 b meshtastic::nodeIndex
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20003610 00000004 d meshtastic::targetFramerate
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2000c554 00000004 B BLEService::lastService
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200041cc 00000004 b timeStartMsec
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200036dc 00000004 d sbrk_heap_top
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2000d364 00000004 b _loopHandle
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2000c540 00000004 b guard variable for BLEAdvertising::_start(unsigned short, unsigned short)::gap_adv
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2000d0d0 00000004 b xYieldPending
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2000d35c 00000004 b xTimerTaskHandle
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2000d358 00000004 b xTimerQueue
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2000d0cc 00000004 b xTickCount
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2000d0a0 00000004 b xSchedulerRunning
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2000d088 00000004 b xNumOfOverflows
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2000d084 00000004 b xNextTaskUnblockTime
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2000d304 00000004 b xLastTime.9343
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2000d080 00000004 b xIdleTaskHandle
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2000d054 00000004 b uxTopReadyPriority
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2000d050 00000004 b uxTaskNumber
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2000d04c 00000004 b uxSchedulerSuspended
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2000d048 00000004 b uxPendedTicks
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2000d044 00000004 b uxDeletedTasksWaitingCleanUp
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2000d040 00000004 b uxCurrentNumberOfTasks
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2000d360 00000004 b uxCriticalNesting
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2000cc64 00000004 b _usbd_q
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2000e478 00000004 B _timezone
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200036e0 00000004 D SystemCoreClock
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2000c53c 00000004 b _sem
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2000d0d8 00000004 b pxOverflowTimerList
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2000cfd8 00000004 b pxOverflowDelayedTaskList
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2000cfd4 00000004 b pxDelayedTaskList
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2000d0d4 00000004 b pxCurrentTimerList
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2000cfd0 00000004 B pxCurrentTCB
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2000e470 00000004 b prev_tzenv
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2000360c 00000004 D preftmp
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20003608 00000004 D preffile
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2000b25c 00000004 B nrf52Bluetooth
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2000d370 00000004 b m_usbevt_handler
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2000d36c 00000004 b m_sleepevt_handler
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2000d368 00000004 b m_pofwarn_handler
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2000e454 00000004 B __malloc_sbrk_start
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2000e450 00000004 B __malloc_free_list
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2000e480 00000004 B MAIN_MonCnt
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2000e47c 00000004 b initial_env
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200036e8 00000004 D _impure_ptr
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200041d8 00000004 B gps
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2000e7a4 00000004 B errno
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20003918 00000004 D environ
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2000cfcc 00000004 b enabled
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2000ae64 00000004 B displayedNodeNum
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2000e474 00000004 B _daylight
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2000b254 00000004 B crypto
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2000ce44 00000004 B count_duration
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2000de0c 00000004 b _cb_task
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2000de08 00000004 b _cb_queue
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2000de04 00000004 b _cb_qdepth
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2000de44 00000004 B bootloaderVersion
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200041f5 00000001 b ledBlinker()::ledOn
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20003604 00000001 d loop::showingBootScreen
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200041f4 00000001 b loop::wasPressed
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2000b494 00000001 b DefaultFontTableLookup(unsigned char)::LASTCHAR
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2000aea0 00000001 b generatePacketId()::didInit
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20003624 00000001 d meshtastic::prevFrame
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2000b258 00000001 b bleOn
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200041dc 00000001 B timeSetFromGPS
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20004348 00000001 B ssd1306_found
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2000ce49 00000001 B pin_sound
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2000e494 00000001 B nrfx_power_irq_enabled
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2000ce48 00000001 B no_stop
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20003630 00000001 D neo6M
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2000ce40 00000001 b _initialized
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200036e4 00000001 D __fdlib_version
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20003970 00000001 b completed.9929
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46
linker/nrf52840_s140_sim832.ld
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46
linker/nrf52840_s140_sim832.ld
Normal file
@ -0,0 +1,46 @@
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/* Linker script to configure memory regions.
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geeksville: modified this to simulate a nrf52832 but with a sd140 soft device. So I can
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see how the memory footprint works on this lower end CPU. Note: to work with sd140 in my bootloader
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I need to start ram at 0x6000 (instead of the correct 0x3600 for sd132) - so I have less
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RAM available than on a real 832.
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*/
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SEARCH_DIR(.)
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GROUP(-lgcc -lc -lnosys)
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0x6D000 - 0x26000
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/* FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0xED000 - 0x26000 */
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/* SRAM required by S132 depend on
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* - Attribute Table Size
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* - Vendor UUID count
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* - Max ATT MTU
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* - Concurrent connection peripheral + central + secure links
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* - Event Len, HVN queue, Write CMD queue
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*/
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/* RAM (rwx) : ORIGIN = 0x20003600, LENGTH = 0x20010000 - 0x20003600 */
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RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 0x20010000 - 0x20006000
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}
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SECTIONS
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{
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. = ALIGN(4);
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.svc_data :
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{
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PROVIDE(__start_svc_data = .);
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KEEP(*(.svc_data))
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PROVIDE(__stop_svc_data = .);
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} > RAM
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.fs_data :
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{
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PROVIDE(__start_fs_data = .);
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KEEP(*(.fs_data))
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PROVIDE(__stop_fs_data = .);
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} > RAM
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} INSERT AFTER .data;
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INCLUDE "nrf52_common.ld"
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