Add OXBOT_FLOW_AIO45 target

[Michael-GGG]

• passed Betaflight team's schematics review
• passed hardware samples testing
• follows guidelines
• follows connector standards
• flight tested
• comments/issues resolved

Summary by CodeRabbit

• New Features
  • Added support for the OXBOT FLOW AIO45 flight controller: enabled IMU (SPI ICM42688P), barometer, external gyro clock, onboard flash, OSD, LED strip and beeper.
  • Mapped UART/I2C/SPI/ADC peripherals, motor outputs, timer channels, and set sensible defaults for blackbox, DShot/telemetry, current/voltage meters, and serial port roles.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 3f2dc544-33fc-43e1-a13e-0d5cab332764

📥 Commits

Reviewing files that changed from the base of the PR and between 00488c3 and 5e122a9.

📒 Files selected for processing (1)

• configs/OXBOT_FLOW_AIO45/config.h

✅ Files skipped from review due to trivial changes (1)

• configs/OXBOT_FLOW_AIO45/config.h

---

Walkthrough

Adds a new Betaflight board configuration header for OXBOT_FLOW_AIO45 defining MCU, board identifiers, enabled peripherals, pin and timer mappings, sensor/SPI/I2C instances, and default runtime/telemetry settings.

Changes

Cohort / File(s)

Summary

OXBOT_FLOW_AIO45 Board Configuration configs/OXBOT_FLOW_AIO45/config.h

New board header: sets FC_TARGET_MCU, BOARD_NAME, MANUFACTURER_ID; enables accelerometer/gyro (including ICM42688P SPI variants), barometer (DPS310), flash (W25Q128FV), external gyro clock, MAX7456 OSD; declares motor, UART, I2C, SPI, ADC, LED, beeper, PINIO1 pins; defines TIMER_PIN_MAPPING, DMA/beeper/HSE macros, sensor SPI/I2C instance selections, gyro alignment, PINIO metadata, and default runtime/telemetry options (blackbox device, DShot bitbang/telemetry, current/voltage meter sources/scaling, UART routing).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Add AIRBRAINH743 #924 — Adds a similar AT32F435G board config header with matching macros (pins, sensors, TIMER_PIN_MAPPING, SPI/I2C instances).
• Add ZEX_ATHENA_MINI #888 — Adds a near-duplicate board config header that declares the same sensor/flash/baro flags and default UART/meter settings.
• Add HUMMINGBIRD_AIO255 #806 — Adds another AT32F435G board configuration header with overlapping pin/instance and sensor definitions.

Suggested labels

Schematics approved, Awaiting prototype samples, Uses BF connector standard

Suggested reviewers

• haslinghuis
• blckmn
• nerdCopter

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The pull request description provides only a checklist without the mandatory descriptive text or details about the hardware, design, or rationale required by the template.	Add a detailed description of the OXBOT_FLOW_AIO45 hardware, design rationale, and compliance details beyond the checklist. Include sections explaining the board features, hardware design, and any relevant notes.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: adding a new Betaflight board configuration for the OXBOT_FLOW_AIO45 target.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

Tip

You can customize the tone of the review comments and chat replies.

Configure the tone_instructions setting to customize the tone of the review comments and chat replies. For example, you can set the tone to Act like a strict teacher, Act like a pirate and more.

[Michael-GGG]

We'll send samples next week.

[coderabbitai]

Warning

CodeRabbit couldn't request changes on this pull request because it doesn't have sufficient GitHub permissions.

Please grant CodeRabbit Pull requests: Read and write permission and re-run the review.

👉 Steps to fix this

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@configs/OXBOT_FLOW_AIO45/config.h`:
- Around line 79-84: The TIMER_PIN_MAPPING has incorrect timer indices: update
the entry for MOTOR3_PIN in TIMER_PIN_MAPPING (currently using TIMER_PIN_MAP
with timer 1) to use timer 2 instead, and update the entry for GYRO_1_CLKIN_PIN
(currently using timer 3) to use timer 1 so the mappings for MOTOR3_PIN and
GYRO_1_CLKIN_PIN match the AT32F435 pin-to-timer mappings; adjust the two
TIMER_PIN_MAP calls accordingly in the TIMER_PIN_MAPPING macro.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 2dd52d6d-6d58-493a-9e5f-e922c8dbec4f

📥 Commits

Reviewing files that changed from the base of the PR and between edb8a26 and 3a92859.

📒 Files selected for processing (1)

• configs/OXBOT_FLOW_AIO45/config.h

[haslinghuis]

LS conflicts with M2 and GYRO_CLKIN

Pin	Resource	1	2	3	Preferred
PB6	M1	TIM4-CH1			1
PB9	M2	TIM2-CH2	TIM4-CH4	TIM11-CH1	2
PB1	M3	X	TIM3_CH4	X	2
PB0	M4	X	TIM3_CH3	X	2
PB11	LS	TIM2-CH4	TIM5-CH4		2
PA2	GC	TIM2-CH3	TIM5-CH3	TIM9-CH1	3

Suggested change

	#define TIMER_PIN_MAPPING TIMER_PIN_MAP(0, MOTOR1_PIN, 1, 1) \
	TIMER_PIN_MAP(1, MOTOR2_PIN, 1, 2) \
	TIMER_PIN_MAP(2, MOTOR3_PIN, 2, 3) \
	TIMER_PIN_MAP(3, MOTOR4_PIN, 2, 4) \
	TIMER_PIN_MAP(4, LED_STRIP_PIN, 1, 5) \
	TIMER_PIN_MAP(5, GYRO_1_CLKIN_PIN, 1, -1)
	#define TIMER_PIN_MAPPING TIMER_PIN_MAP(0, MOTOR1_PIN, 1, 1) \
	TIMER_PIN_MAP(1, MOTOR2_PIN, 2 2) \
	TIMER_PIN_MAP(2, MOTOR3_PIN, 2, 3) \
	TIMER_PIN_MAP(3, MOTOR4_PIN, 2, 4) \
	TIMER_PIN_MAP(4, LED_STRIP_PIN, 2, 5) \
	TIMER_PIN_MAP(5, GYRO_1_CLKIN_PIN, 3, -1)