fix/feat(stm32/russell): Serial2 build fix and BME680 support#10097
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The Russell board variant was missed during Initial serialModule cleanup (PR meshtastic#9465), which began requiring Serial2 to be explicitly defined via ENABLE_HWSERIAL2 and PIN_SERIAL2_TX/RX rather than relying on implicit defaults, causing a build error. Signed-off-by: Andrew Yong <me@ndoo.sg>
The BME680 is hardware footprint compatible with the BME280 already present on the Russell board, so add it as an additional lib dep to enable environment sensing (temperature, humidity, pressure, gas resistance). The STM32 target has very limited flash. Even traceroute alone causes overflow, so the following modules are excluded to stay within budget: - RANGETEST - DETECTIONSENSOR - EXTERNALNOTIFICATION - POWERSTRESS - NEIGHBORINFO - TRACEROUTE - WAYPOINT AIR_QUALITY_SENSOR is also excluded as it requires the BSEC2 library for real IAQ output, which alone overflows flash by ~44KB on this target. The Adafruit BME680 library is used instead for raw sensor readings. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 8, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 8, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
jp-bennett
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Apr 10, 2026
ndoo
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Apr 11, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 14, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 14, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 15, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
to mesh-malaysia/meshtastic-firmware
that referenced
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
to mesh-malaysia/meshtastic-firmware
that referenced
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Apr 16, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
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Apr 17, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 17, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
added a commit
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Apr 17, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 18, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 18, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 19, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
ndoo
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Apr 22, 2026
RAK3172 has a built-in 32.768 kHz LSE crystal so we can expect built-in RTC to be functional. Enable HAS_RTC and configure the LSE drive level for the RAK3172. LSE drive level from here: https://github.com/RAKWireless/RAK-STM32-RUI/blob/main/variants/WisDuo_RAK3172_Evaluation_Board/rui_inner_main.c Also added the same defines for russell which uses the RAK3172 module. Build-tested on: * rak3172 * wio-e5 (no changes, just a regression test) Couldn't build test russell due to build errors fixed in meshtastic#10097. Signed-off-by: Andrew Yong <me@ndoo.sg>
mariotti
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May 6, 2026
…stic#10097) * fix(stm32/russell): define ENABLE_HWSERIAL2 and Serial2 pins The Russell board variant was missed during Initial serialModule cleanup (PR meshtastic#9465), which began requiring Serial2 to be explicitly defined via ENABLE_HWSERIAL2 and PIN_SERIAL2_TX/RX rather than relying on implicit defaults, causing a build error. Signed-off-by: Andrew Yong <me@ndoo.sg> * feat(stm32/russell): add BME680 support, exclude modules to fit flash The BME680 is hardware footprint compatible with the BME280 already present on the Russell board, so add it as an additional lib dep to enable environment sensing (temperature, humidity, pressure, gas resistance). The STM32 target has very limited flash. Even traceroute alone causes overflow, so the following modules are excluded to stay within budget: - RANGETEST - DETECTIONSENSOR - EXTERNALNOTIFICATION - POWERSTRESS - NEIGHBORINFO - TRACEROUTE - WAYPOINT AIR_QUALITY_SENSOR is also excluded as it requires the BSEC2 library for real IAQ output, which alone overflows flash by ~44KB on this target. The Adafruit BME680 library is used instead for raw sensor readings. Signed-off-by: Andrew Yong <me@ndoo.sg> --------- Signed-off-by: Andrew Yong <me@ndoo.sg> Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz> Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
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Russell board: Serial2 build fix and BME680 support
Two changes for the Russell variant (STM32WLE5 balloon tracker board).
fix: define ENABLE_HWSERIAL2 and Serial2 pins
The Russell board was missed during Initial serialModule cleanup (PR #9465), which began requiring Serial2 to be explicitly defined via
ENABLE_HWSERIAL2andPIN_SERIAL2_TX/PIN_SERIAL2_RXrather than relying on implicit defaults, causing a build error.feat: add BME680 support, exclude modules to fit flash
The BME680 is hardware footprint compatible with the BME280 already present on the Russell board, so it is added as an additional lib dep to enable environment sensing (temperature, humidity, pressure, gas resistance).
The STM32 target has very limited flash. Even traceroute alone causes overflow, so the following modules are excluded to stay within budget:
RANGETESTDETECTIONSENSOREXTERNALNOTIFICATIONPOWERSTRESSNEIGHBORINFOTRACEROUTEWAYPOINTAIR_QUALITY_SENSORis also excluded as it requires the BSEC2 library for real IAQ output, which alone overflows flash by ~44KB on this target. The Adafruit BME680 library is used instead for raw sensor readings.🤝 Attestations