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README.md
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README.md
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@ -119,7 +119,7 @@ Use the `esp32_deploy.py` script for deploying to multiple devices:
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python3 esp32_deploy.py \
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--ssid "YourSSID" \
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--password "password" \
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--start-ip 192.168.1.50 \
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--target-ip 192.168.1.50 \
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--netmask 255.255.255.0 \
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--gateway 192.168.1.1 \
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--iperf-dest-ip 192.168.1.10 \
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@ -128,37 +128,6 @@ python3 esp32_deploy.py \
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See `doc/DEPLOYMENT_GUIDE.md` for complete deployment instructions.
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### USB Port Mapping (`gen_udev_rules.py`)
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When deploying to multiple ESP32 devices, Linux assigns `/dev/ttyUSB*` ports that can change between reboots or when devices are reconnected. The `gen_udev_rules.py` script creates stable symbolic links (e.g., `/dev/esp_port_01`, `/dev/esp_port_02`) based on each device's USB physical topology (`ID_PATH`), ensuring consistent port identification across system reboots.
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**Features:**
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- Uses `ID_PATH` for stable device identification (not just port numbers)
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- Creates predictable symlinks: `/dev/esp_port_01`, `/dev/esp_port_02`, etc.
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- Supports full scan (generate from scratch) or incremental updates (append new devices)
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- Sorts devices by physical USB topology for consistent ordering
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**Usage:**
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```bash
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# Generate complete rules file from scratch
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python3 gen_udev_rules.py --full
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# Append only new devices to existing rules (default mode)
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python3 gen_udev_rules.py --append
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# Dry run to preview changes
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python3 gen_udev_rules.py --append --dry-run
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```
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After generating rules, install them:
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```bash
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sudo cp 99-esp32-stable.rules /etc/udev/rules.d/
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sudo udevadm control --reload-rules && sudo udevadm trigger
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```
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The deployment script (`esp32_deploy.py`) can use these stable symlinks when `--map-ports` is used, or devices can be referenced directly by their `esp_port_XX` names.
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## Project Structure
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```
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