8a7cebcf77
- firmware BSP_USART_BAUDRATE 460800 (divider error +0.03%); uartrst/ uartinfo follow the macro - RX DMA ring 2KB -> 3KB: at 460800 2KB only covers 44ms, less than the ~45ms flash-erase interrupt-off window; stack top now 0x2000BDE8 (guard warns <1KB from the 0x2000C000 cliff, by design) - tools: ble_ota_update.py UartTransport and uart_cap.py default baud - Verified: stream OTA 55832B in 2.6s @23kB/s (one lost frame recovered by go-back-N), PASS after reboot; text CLI fine at 460800 - docs: ble_protocol.md, design spec, AGENTS.md, dev log section 48
21 lines
509 B
Python
21 lines
509 B
Python
# -*- coding: utf-8 -*-
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"""Capture UART to a file for N seconds (OTA/BLE debug sessions)."""
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import sys
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import time
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import serial
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port = sys.argv[1] if len(sys.argv) > 1 else r"\\.\COM4"
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out = sys.argv[2]
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dur = float(sys.argv[3]) if len(sys.argv) > 3 else 120
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ser = serial.Serial(port, 460800, timeout=0.2)
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t0 = time.time()
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with open(out, "wb") as f:
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while time.time() - t0 < dur:
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data = ser.read(4096)
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if data:
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f.write(data)
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f.flush()
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print("captured to", out)
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