42 lines
1.3 KiB
Bash
Executable File
42 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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# ec_i2c_scan.sh - 用 ectool i2cxfer 扫描 EC 各 I2C port 上的设备
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# 用法: ECTOOL=/path/to/ectool-cec sudo ./ec_i2c_scan.sh [port1 port2 ...]
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# 不传 port 时默认扫 port 0~7。必须用 Chromium 的 ectool-cec，系统 ectool 无 i2cxfer。
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set -e
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ECTOOL=/home/jack/bin/ectool-cec
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# 默认用 ectool-cec（系统 ectool 不支持 i2cxfer）
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if [ -z "$ECTOOL" ]; then
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for candidate in ectool-cec ./ectool-cec "$HOME/bin/ectool-cec"; do
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if command -v "$candidate" >/dev/null 2>&1 || [ -x "$candidate" ]; then
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ECTOOL="$candidate"
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break
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fi
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done
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fi
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ECTOOL="${ECTOOL:-ectool-cec}"
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PORTS="${*:-0 1 2 3 4 5 6 7}"
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if ! command -v "$ECTOOL" >/dev/null 2>&1 && ! [ -x "$ECTOOL" ]; then
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echo "未找到 ectool-cec（需 Chromium EC 的 ectool，系统 ectool 无 i2cxfer）。请设置 ECTOOL："
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echo " ECTOOL=/home/jack/bin/ectool-cec sudo $0"
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exit 1
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fi
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# 7bit 地址范围（0x00-0x07 保留，0x78-0x7f 多为 10bit）
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for port in $PORTS; do
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found=""
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for addr in $(seq 8 119); do
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hexaddr=$(printf "0x%02x" "$addr")
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if "$ECTOOL" i2cxfer "$port" "$hexaddr" 1 >/dev/null 2>&1; then
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found="$found $hexaddr"
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fi
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done
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if [ -n "$found" ]; then
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echo "EC I2C port $port:$found"
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else
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echo "EC I2C port $port: (无设备)"
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fi
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done
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