mattandClaude
b9162db707
Firmware for a Seeed XIAO ESP32-C6 driving a C4001 24GHz radar, with a web UI for live data and calibration. - Auto-detects whether the C4001 is on I2C (0x2A/0x2B) or UART, so the board's mode switch position doesn't matter. Serves the probe log over HTTP when nothing is found. - Single-page UI inlined into flash (no CDN, so it works in AP mode): presence state, target count, range, speed, energy, rolling 60s chart, and mode-aware calibration controls. - Joins WiFi from a gitignored include/secrets.h, falls back to a "xiao-mmwave" AP, registers mmwave.local. - Poll rate adapts to the interface: UART at 9600 costs ~60ms per register round-trip, so polling it at the I2C rate starved the HTTP server. Two hardware gotchas documented in the README: - The sensor UART must not use D6/D7. Those are GPIO16/17, the C6's hard-wired U0TXD/U0RXD. Pointing Serial1 at them deadlocks the UART driver and trips the interrupt watchdog, boot-looping the board. UART1 has no fixed pins, so it routes through the GPIO matrix to D10/D9. - DFRobot's own wiring table pairs the sensor's RX with the MCU's RX, and their library swaps the rxpin/txpin parameter names between the header and the .cpp. Verified on ESP32-C6FH4 rev v0.1, 4MB flash: builds at 57.6% flash / 11.9% RAM, flashes over the native USB Serial/JTAG port, and reads a live C4001 on I2C @ 0x2A. Co-Authored-By: Claude <noreply@anthropic.com>
16 lines
522 B
Plaintext
16 lines
522 B
Plaintext
// Copy to include/secrets.h and fill in your own network.
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//
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// cp include/secrets.h.example include/secrets.h
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// $EDITOR include/secrets.h
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//
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// include/secrets.h is gitignored. Don't paste the password into a chat
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// window or a terminal transcript -- edit the file directly.
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//
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// If you skip this entirely the firmware still works: it goes straight to
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// Access Point mode and hosts its own "xiao-mmwave" hotspot.
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#pragma once
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#define WIFI_SSID "your-network-name"
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#define WIFI_PASS "your-network-password"
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