5464d9de3a
Webserver: - Remove MD5 hash computation from file listings (caused EAGAIN errors) - Implement JSON batching (2KB) with pacing for file listings - Simplify sendContentSafe() flow control Memory: - Cache QR codes on server start instead of regenerating per render - Optimize WiFi scan: vector deduplication, 20 network limit, early scanDelete() - Fix 48KB cover buffer leak when navigating Home -> File Transfer EPUB Reader: - Fix errant underlining by flushing partWordBuffer before style changes - Text before styled inline elements (e.g., <a> with CSS underline) no longer incorrectly receives the element's styling Flash Screen: - Fix version string buffer overflow (30 -> 50 char limit) - Use half refresh for cleaner display - Adjust pre_flash.py timing for half refresh completion
53 lines
1.7 KiB
Python
53 lines
1.7 KiB
Python
"""
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Pre-upload script that sends FLASH command to device before firmware upload.
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This allows the firmware to display "Flashing firmware..." on the e-ink display
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before the actual flash begins. The e-ink retains this message throughout the
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flash process since it doesn't require power to maintain the display.
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Protocol (Plan A - Simple timing):
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1. Host opens serial port and sends "FLASH:version"
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2. Host keeps port open briefly for device to receive and process
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3. Device displays flash screen when it receives the command
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4. Host proceeds with flash
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"""
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Import("env")
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import serial
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import time
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from version_utils import get_version
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def before_upload(source, target, env):
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"""Send FLASH command to device before uploading firmware."""
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port = env.GetProjectOption("upload_port", None)
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if not port:
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import serial.tools.list_ports
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# Look for common ESP32-C3 USB serial port patterns
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ports = [
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p.device
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for p in serial.tools.list_ports.comports()
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if "usbmodem" in p.device.lower() or "ttyacm" in p.device.lower()
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]
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port = ports[0] if ports else None
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if not port:
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print("[pre_flash] No serial port found, skipping notification")
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return
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try:
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version = get_version(env)
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ser = serial.Serial(port, 115200, timeout=1)
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ser.write(f"FLASH:{version}\n".encode())
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ser.flush()
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time.sleep(4.0) # Keep port open for device to receive and complete full refresh (~2-3s)
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ser.close()
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print(f"[pre_flash] Flash notification sent to {port} (version {version})")
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except Exception as e:
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print(f"[pre_flash] Notification skipped: {e}")
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env.AddPreAction("upload", before_upload)
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