first commit

.claude/settings.local.json

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+{}

weather-station-receive/.claude/settings.local.json

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+{
+  "permissions": {
+    "allow": [
+      "Bash(chmod +x *)"
+    ]
+  }
+}

weather-station-receive/receive.sh

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+#!/bin/bash
+#===============================================================================
+# 气象站串口数据接收脚本 (Shell 版本)
+# 功能等价于原 Python 脚本，读取串口数据 -> CRC 校验 -> 解析 -> 上传
+#===============================================================================
+set -uo pipefail
+
+#-------------------------------------------------------------------------------
+# 配置（修改这里即可，不需要 TOML 文件）
+#-------------------------------------------------------------------------------
+URL="http://127.0.0.1:7763/v1/upload"
+TTY="/dev/ttyUSB0"
+BAUD=9600
+WHOLE_LEN=11
+DATA_LEN=7
+CRC_LEN=4
+
+echo "========================================"
+echo "  气象站串口接收器 (Shell)"
+echo "========================================"
+echo "串口:     $TTY"
+echo "波特率:   $BAUD"
+echo "数据长度: $WHOLE_LEN 字节 (payload=$DATA_LEN, crc=$CRC_LEN)"
+echo "服务器:   $URL"
+echo "========================================"
+
+#-------------------------------------------------------------------------------
+# CRC32 计算（调用 python3 单行 —— 与 binascii.crc32 完全一致）
+# 输入: 通过管道传入原始二进制字节
+# 输出: 十进制无符号 CRC32 值
+#-------------------------------------------------------------------------------
+crc32() {
+    python3 -c "import binascii,sys; print(binascii.crc32(sys.stdin.buffer.read()) & 0xFFFFFFFF)"
+}
+
+#-------------------------------------------------------------------------------
+# 符号扩展：把 16 位无符号值转为有符号
+#-------------------------------------------------------------------------------
+sign_extend16() {
+    local v=$1
+    if (( v >= 32768 )); then
+        echo $(( v - 65536 ))
+    else
+        echo $v
+    fi
+}
+
+#-------------------------------------------------------------------------------
+# 刷新串口输入缓冲区（等价于 Python 的 ser.reset_input_buffer()）
+#-------------------------------------------------------------------------------
+flush_serial() {
+    # 临时切换到非阻塞模式，排空所有已缓冲数据
+    stty -F "$TTY" -icanon min 0 time 0 2>/dev/null || true
+    dd if="$TTY" bs=4096 count=1 of=/dev/null 2>/dev/null || true
+    # 恢复阻塞模式
+    stty -F "$TTY" -icanon min 1 time 0 2>/dev/null || true
+}
+
+#-------------------------------------------------------------------------------
+# 配置串口
+#-------------------------------------------------------------------------------
+stty -F "$TTY" "$BAUD" cs8 -cstopb -parenb raw -echo
+echo "串口已配置，开始监听..."
+
+# 初始清空缓冲区
+flush_serial
+
+#-------------------------------------------------------------------------------
+# 主循环：读帧 → 校验 → 解析 → 上传
+#-------------------------------------------------------------------------------
+pkt_count=0
+err_count=0
+
+while true; do
+    # --- 1. 从串口读取完整一帧（阻塞直到凑齐 WHOLE_LEN 字节）---
+    tmpfile=$(mktemp)
+    # dd bs=1 逐字节读取，确保不提前返回（raw 模式下 min=1, time=0）
+    dd if="$TTY" bs=1 count="$WHOLE_LEN" of="$tmpfile" 2>/dev/null
+
+    # 校验实际读到的字节数
+    actual_len=$(stat -c%s "$tmpfile" 2>/dev/null || echo 0)
+    if (( actual_len != WHOLE_LEN )); then
+        rm -f "$tmpfile"
+        continue
+    fi
+
+    # --- 2. 转为十六进制便于解析 ---
+    hex=$(od -An -tx1 -v "$tmpfile" | tr -d ' \n')
+    rm -f "$tmpfile"
+
+    # 安全检查：hex 长度应该等于 WHOLE_LEN * 2
+    if (( ${#hex} != WHOLE_LEN * 2 )); then
+        continue
+    fi
+
+    # --- 3. 拆分 payload 和 CRC ---
+    payload_hex="${hex:0:$((DATA_LEN * 2))}"
+    remote_crc_hex="${hex:$((DATA_LEN * 2)):$((CRC_LEN * 2))}"
+    remote_crc=$((16#$remote_crc_hex))
+
+    # --- 4. 计算本地 CRC32 并与远端比对 ---
+    local_crc=$(echo "$payload_hex" | xxd -r -p 2>/dev/null | crc32)
+
+    if (( remote_crc != local_crc )); then
+        ((err_count++))
+        echo "[错误] CRC 校验失败 #${err_count} — 刷新缓冲区..."
+        flush_serial
+        continue
+    fi
+
+    # --- 5. 解析 payload: >Bhhh (大端: uint8, int16, int16, int16) ---
+    station_id=$((16#${payload_hex:0:2}))
+    t_raw=$((    16#${payload_hex:2:4}))
+    p_raw=$((    16#${payload_hex:6:4}))
+    rh_raw=$((   16#${payload_hex:10:4}))
+
+    t=$(sign_extend16 $t_raw)
+    p=$(sign_extend16 $p_raw)
+    rh=$(sign_extend16 $rh_raw)
+
+    # 定点小数转换（原始值 / 10，保留 1 位小数）
+    t_val=$(awk  "BEGIN {printf \"%.1f\", $t/10}")
+    p_val=$(awk  "BEGIN {printf \"%.1f\", $p/10}")
+    rh_val=$(awk "BEGIN {printf \"%.1f\", $rh/10}")
+
+    # --- 6. 站台名称 ---
+    if (( station_id == 1 )); then
+        station_name="AAU"
+    else
+        station_name="unknown"
+    fi
+
+    ((pkt_count++))
+    echo "----------------------------------------"
+    echo "[数据包 #${pkt_count}] station_id=$station_id ($station_name)"
+    echo "  温度: $t_val °C  |  气压: $p_val hPa  |  湿度: $rh_val %"
+
+    # --- 7. HTTP POST 上传 ---
+    json=$(printf '{"station_name":"%s","temperature":%s,"pressure":%s,"relative_humidity":%s}' \
+        "$station_name" "$t_val" "$p_val" "$rh_val")
+
+    http_code=$(curl -s -o /dev/null -w "%{http_code}" \
+        -X POST "$URL" \
+        -H "Content-Type: application/json" \
+        -d "$json" 2>/dev/null || echo "000")
+
+    if [[ "$http_code" == "200" ]] || [[ "$http_code" == "201" ]]; then
+        echo "  上传成功 (HTTP $http_code)"
+    else
+        echo "  上传失败 (HTTP $http_code)"
+        echo "  数据: $json"
+        echo "  等待服务器连接..."
+    fi
+done