refactor: move firmware workspace under firmware

firmware/boards/kakute-f7-mini-v3/src/board.rs

@@ -0,0 +1,51 @@
+//! Declarative Kakute F7 Mini V3 board description.
+//!
+//! This module deliberately contains no MCU registers, RTIC concepts, unsafe
+//! code, interrupt names, DMA handling, or task scheduling. Those concerns
+//! belong to the STM32F7 platform crate.
+
+use kaptan_board::{
+    BoardConfig, BoardProfile, DataChannelRates, ImuDevice, ImuMount, MavlinkEndpoint, MavlinkPort,
+    Severity, TelemetryProfile, VerticalSensingKind,
+};
+use platform_stm32f7::{
+    BoardError, F7Board, F7BoardBuilder, F722BoardRoutes, Mavlink, Mpu6000, Pa4, VerticalSensor,
+};
+
+/// Holybro Kakute F7 Mini V3.
+pub struct KakuteF7MiniV3;
+
+const CONFIG: BoardConfig = BoardConfig {
+    name: "Kakute F7 Mini V3",
+    mavlink: MavlinkEndpoint {
+        system_id: 1,
+        component_id: 1,
+        port: MavlinkPort::Serial1,
+        baud: 115_200,
+    },
+    profile: BoardProfile::TelemetryOnly(TelemetryProfile {
+        imu: ImuDevice::Mpu6000,
+        imu_mount: ImuMount::BodyAligned,
+        vertical_sensing: VerticalSensingKind::RangeAndOpticalFlow,
+        data_channel: DataChannelRates {
+            service_hz: 100,
+            raw_imu_hz: 20,
+            range_hz: Some(20),
+            optical_flow_hz: Some(20),
+            heartbeat_hz: 2,
+        },
+        maximum_log_level: Severity::Info,
+    }),
+};
+
+impl F7Board for KakuteF7MiniV3 {
+    const CONFIG: BoardConfig = CONFIG;
+
+    fn build(platform: F7BoardBuilder) -> Result<F722BoardRoutes, BoardError> {
+        platform
+            .imu(Mpu6000::on_spi1().with_drdy(Pa4))
+            .mavlink(Mavlink::on_usart1())
+            .vertical_sensor(VerticalSensor::mtf01_on_uart4())
+            .build()
+    }
+}

firmware/boards/kakute-f7-mini-v3/src/main.rs

@@ -0,0 +1,5 @@
+#![no_std]
+#![no_main]
+
+mod board;
+platform_stm32f7::flight_firmware!(board::KakuteF7MiniV3);