tooling: Add make deploy-usb for DAPLink mass-storage flashing.

Author: nedseb

CONTRIBUTING.md

@@ -195,6 +195,7 @@ make firmware       # Clone micropython-steami (if needed), link local drivers,
 make firmware-update # Refresh the MicroPython clone and board-specific submodules
 make deploy         # Flash firmware via pyOCD (default)
 make deploy-openocd # Flash firmware via OpenOCD (alternative)
+make deploy-usb     # Flash firmware via DAPLink USB mass-storage (alternative)
 make run SCRIPT=lib/steami_config/examples/show_config.py      # Run with live output
 make deploy-script SCRIPT=lib/.../calibrate_magnetometer.py    # Deploy as main.py for autonomous use
 make run-main       # Re-execute the deployed main.py

Makefile

@@ -134,6 +134,10 @@ deploy-pyocd: $(MPY_DIR) ## Flash firmware via pyOCD (CMSIS-DAP)
 deploy-openocd: $(MPY_DIR) ## Flash firmware via OpenOCD
 	$(MAKE) -C $(STM32_DIR) BOARD=$(BOARD) deploy-openocd
 
+.PHONY: deploy-usb
+deploy-usb: $(MPY_DIR) ## Flash firmware via DAPLink USB mass-storage
+	@$(PYTHON) scripts/deploy_usb.py $(STM32_DIR)/build-$(BOARD)/firmware.bin
+
 .PHONY: run
 run: ## Run a script on the board with live output (SCRIPT=path/to/file.py)
 	@if [ -z "$(SCRIPT)" ]; then \

scripts/deploy_usb.py

@@ -0,0 +1,114 @@
+"""Deploy MicroPython firmware to a STeaMi board via DAPLink USB mass-storage.
+
+Detects the STeaMi volume by its label across Linux, macOS, and Windows,
+copies the firmware .bin to it, and lets DAPLink auto-reset the target.
+
+Usage:
+    python scripts/deploy_usb.py path/to/firmware.bin
+"""
+
+import os
+import platform
+import shutil
+import subprocess
+import sys
+
+VOLUME_LABEL = "STeaMi"
+
+
+def find_steami_linux():
+    """Find STeaMi mount point on Linux via findmnt."""
+    try:
+        result = subprocess.run(
+            ["findmnt", "-n", "-o", "TARGET", "-S", "LABEL=" + VOLUME_LABEL],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        if result.returncode == 0:
+            mount = result.stdout.strip().split("\n")[0]
+            return mount or None
+    except FileNotFoundError:
+        pass
+    return None
+
+
+def find_steami_macos():
+    """Find STeaMi mount point on macOS (always /Volumes/<label>)."""
+    path = "/Volumes/" + VOLUME_LABEL
+    if os.path.isdir(path):
+        return path
+    return None
+
+
+def find_steami_windows():
+    """Find STeaMi drive letter on Windows via WMI."""
+    try:
+        result = subprocess.run(
+            [
+                "wmic",
+                "logicaldisk",
+                "where",
+                "VolumeName='" + VOLUME_LABEL + "'",
+                "get",
+                "DeviceID",
+                "/value",
+            ],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        if result.returncode == 0:
+            for line in result.stdout.splitlines():
+                if line.startswith("DeviceID="):
+                    drive = line.split("=", 1)[1].strip()
+                    if drive:
+                        return drive + "\\"
+    except FileNotFoundError:
+        pass
+    return None
+
+
+def find_steami():
+    """Detect the STeaMi USB volume across platforms."""
+    system = platform.system()
+    if system == "Linux":
+        return find_steami_linux()
+    if system == "Darwin":
+        return find_steami_macos()
+    if system == "Windows":
+        return find_steami_windows()
+    print("Error: unsupported OS: " + system, file=sys.stderr)
+    sys.exit(1)
+
+
+def main():
+    if len(sys.argv) != 2:
+        print("Usage: deploy_usb.py <firmware.bin>", file=sys.stderr)
+        sys.exit(1)
+
+    firmware = sys.argv[1]
+    if not os.path.isfile(firmware):
+        print("Error: firmware not found: " + firmware, file=sys.stderr)
+        sys.exit(1)
+
+    mount = find_steami()
+    if not mount or not os.path.isdir(mount):
+        print(
+            "Error: STeaMi board not found. Is it connected and mounted?",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    print("Copying firmware to " + mount + "...")
+    shutil.copy(firmware, mount)
+
+    # Best-effort flush on Unix (no-op on Windows)
+    if hasattr(os, "sync"):
+        os.sync()
+
+    print("Firmware deployed via USB. Board will reset automatically.")
+
+
+if __name__ == "__main__":
+    main()