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4ac8742ce0bd9d09fbd93cb51681aea7e1b738bb
MeshCore-Solo/variants/rak4631/platformio.ini
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Nick Dunklee 4ac8742ce0 feat: use RAK hardware crypto on advert processing 
While working on some sensor code implementations, I ran into
some hard crashes that root-caused to the 4KB loop task stack
being exhausted.

Looking for various optimization schemes resulted in this relatively
low-lift fix. RAK3401 and RAK4631 both support hardware crypto.

Rather than loading in one of the two software crypto libs,
we can just use the onboard hardware. This is faster, should
consume less power, and in testing used a scant up to 700
bytes in the run loop vs 2.5-3KB per advert.

This change **only** affects advert verification processing, which
currently consumes a significant chunk of the 4KB run loop.

I figured such a change should likely be implemented in phases.

After soaking, this hardware crypto verification
process could be implemented across the entire MeshCore
cryptographic function on RAK nodes. Also possible other nodes
have available hardware crypto, however, I have not checked,
so future improvements may also exist there.

Tested on:
  - RAK3401 RAK 1W
  - RAK4631 19001
2026-06-23 11:39:20 -06:00

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[rak4631]
extends = nrf52_base
board = rak4631
board_check = true
extra_scripts = ${nrf52_base.extra_scripts}
post:variants/rak4631/fix_bsec_lib.py
build_flags = ${nrf52_base.build_flags}
${sensor_base.build_flags}
-I variants/rak4631
-D RAK_4631
-D RAK_BOARD
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D PIN_GPS_TX=PIN_SERIAL1_RX
-D PIN_GPS_RX=PIN_SERIAL1_TX
-D PIN_GPS_EN=-1
-D PIN_OLED_RESET=-1
-D USE_SX1262
-D RADIO_CLASS=CustomSX1262
-D WRAPPER_CLASS=CustomSX1262Wrapper
-D LORA_TX_POWER=22
-D SX126X_CURRENT_LIMIT=140
-D SX126X_RX_BOOSTED_GAIN=1
-D USE_CC310_ED25519=1
-D ENV_INCLUDE_RAK12035=1
-UENV_INCLUDE_BME680
-D ENV_INCLUDE_BME680_BSEC=1
build_src_filter = ${nrf52_base.build_src_filter}
+<../variants/rak4631>
+<helpers/sensors>
+<helpers/ui/SSD1306Display.cpp>
+<helpers/ui/MomentaryButton.cpp>
lib_deps =
${nrf52_base.lib_deps}
${sensor_base.lib_deps}
adafruit/Adafruit SSD1306 @ ^2.5.13
sparkfun/SparkFun u-blox GNSS Arduino Library@^2.2.27
boschsensortec/BSEC Software Library @ ^1.8.1492
[env:RAK_4631_repeater]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D DISPLAY_CLASS=SSD1306Display
-D ADVERT_NAME='"RAK4631 Repeater"'
-D ADVERT_LAT=0.0
-D ADVERT_LON=0.0
-D ADMIN_PASSWORD='"password"'
-D MAX_NEIGHBOURS=50
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<helpers/ui/SSD1306Display.cpp>
+<../examples/simple_repeater>
[env:RAK_4631_repeater_bridge_rs232_serial1]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D DISPLAY_CLASS=SSD1306Display
-D ADVERT_NAME='"RS232 Bridge"'
-D ADVERT_LAT=0.0
-D ADVERT_LON=0.0
-D ADMIN_PASSWORD='"password"'
-D MAX_NEIGHBOURS=50
-D WITH_RS232_BRIDGE=Serial1
-D WITH_RS232_BRIDGE_RX=PIN_SERIAL1_RX
-D WITH_RS232_BRIDGE_TX=PIN_SERIAL1_TX
-UENV_INCLUDE_GPS
; -D BRIDGE_DEBUG=1
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
; -D CORE_DEBUG_LEVEL=3
build_src_filter = ${rak4631.build_src_filter}
+<helpers/ui/SSD1306Display.cpp>
+<helpers/bridges/RS232Bridge.cpp>
+<../examples/simple_repeater>
[env:RAK_4631_repeater_bridge_rs232_serial2]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D DISPLAY_CLASS=SSD1306Display
-D ADVERT_NAME='"RS232 Bridge"'
-D ADVERT_LAT=0.0
-D ADVERT_LON=0.0
-D ADMIN_PASSWORD='"password"'
-D MAX_NEIGHBOURS=50
-D WITH_RS232_BRIDGE=Serial2
-D WITH_RS232_BRIDGE_RX=PIN_SERIAL2_RX
-D WITH_RS232_BRIDGE_TX=PIN_SERIAL2_TX
-UENV_INCLUDE_GPS
; -D BRIDGE_DEBUG=1
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
; -D CORE_DEBUG_LEVEL=3
build_src_filter = ${rak4631.build_src_filter}
+<helpers/ui/SSD1306Display.cpp>
+<helpers/bridges/RS232Bridge.cpp>
+<../examples/simple_repeater>
[env:RAK_4631_room_server]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D DISPLAY_CLASS=SSD1306Display
-D ADVERT_NAME='"Test Room"'
-D ADVERT_LAT=0.0
-D ADVERT_LON=0.0
-D ADMIN_PASSWORD='"password"'
-D ROOM_PASSWORD='"hello"'
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<helpers/ui/SSD1306Display.cpp>
+<../examples/simple_room_server>
[env:RAK_4631_companion_radio_usb]
extends = rak4631
board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
board_upload.maximum_size = 712704
build_flags =
${rak4631.build_flags}
-I examples/companion_radio/ui-new
-D PIN_USER_BTN=9
-D PIN_USER_BTN_ANA=31
-D DISPLAY_CLASS=SSD1306Display
-D MAX_CONTACTS=350
-D MAX_GROUP_CHANNELS=40
; NOTE: DO NOT ENABLE --> -D MESH_PACKET_LOGGING=1
; NOTE: DO NOT ENABLE --> -D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<../examples/companion_radio/*.cpp>
+<../examples/companion_radio/ui-new/*.cpp>
lib_deps =
${rak4631.lib_deps}
densaugeo/base64 @ ~1.4.0
[env:RAK_4631_companion_radio_ble]
extends = rak4631
board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
board_upload.maximum_size = 712704
build_flags =
${rak4631.build_flags}
-I examples/companion_radio/ui-new
-D PIN_USER_BTN=9
-D PIN_USER_BTN_ANA=31
-D DISPLAY_CLASS=SSD1306Display
-D MAX_CONTACTS=350
-D MAX_GROUP_CHANNELS=40
-D BLE_PIN_CODE=123456
-D BLE_DEBUG_LOGGING=1
-D OFFLINE_QUEUE_SIZE=256
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<helpers/nrf52/SerialBLEInterface.cpp>
+<../examples/companion_radio/*.cpp>
+<../examples/companion_radio/ui-new/*.cpp>
lib_deps =
${rak4631.lib_deps}
densaugeo/base64 @ ~1.4.0
[env:RAK_4631_terminal_chat]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D PIN_USER_BTN=9
-D PIN_USER_BTN_ANA=31
-D MAX_CONTACTS=100
-D MAX_GROUP_CHANNELS=1
; -D MESH_PACKET_LOGGING=1
; -D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<../examples/simple_secure_chat/main.cpp>
lib_deps =
${rak4631.lib_deps}
densaugeo/base64 @ ~1.4.0
[env:RAK_4631_sensor]
extends = rak4631
build_flags =
${rak4631.build_flags}
-D DISPLAY_CLASS=SSD1306Display
-D ADVERT_NAME='"RAK4631 Sensor"'
-D ADVERT_LAT=0.0
-D ADVERT_LON=0.0
-D ADMIN_PASSWORD='"password"'
; -D MESH_PACKET_LOGGING=1
-D MESH_DEBUG=1
build_src_filter = ${rak4631.build_src_filter}
+<helpers/ui/SSD1306Display.cpp>
+<../examples/simple_sensor>
[env:RAK_4631_kiss_modem]
extends = rak4631
build_flags =
${rak4631.build_flags}
build_src_filter = ${rak4631.build_src_filter}
+<../examples/kiss_modem/>
lib_deps =
${rak4631.lib_deps}
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