ft8模拟器 测试铅酸电池性能用

ft8-send

#!/usr/bin/env ruby

# --- 配置区 ---
SAMPLE_RATE = 44100
FREQUENCY   = 800.0
DURATION    = 15
# 你的 USB 设备关键字（用于 grep 匹配）
DEVICE_KEY  = "usb-C-Media_Electronics_Inc._USB_Audio_Device-00"
# aplay 完整设备路径
DEVICE_PATH = "pulse:alsa_output.#{DEVICE_KEY}.analog-stereo"
AMPLITUDE   = 0.5

# --- 检测逻辑 ---
def device_online?(key)
  # 使用 pactl 检查当前的 sinks 列表中是否包含该设备
  `pactl list sinks short`.include?(key)
end

SAMPLES_PER_STEP = (SAMPLE_RATE * DURATION).to_i

puts "🚀 FT8 电池压力测试准备就绪..."
puts "目标硬件: #{DEVICE_KEY}"

cycle = 0
start_time = Time.now

loop do
  cycle += 1
  
  # 1. 发射前硬检测
  unless device_online?(DEVICE_KEY)
    puts "\n❌ [致命错误] USB 设备已掉线！"
    puts "电池电压可能已跌破临界点。测试停止。"
    puts "总运行时间: #{(Time.now - start_time).round(1)} 秒"
    exit
  end

  # 2. 启动 aplay (每次循环开启，确保只输出到目标设备)
  # 使用 spawn + 管道，以便精确控制
  IO.popen("aplay -f cd -c 1 --device=#{DEVICE_PATH}", "w") do |aplay|
    begin
      puts "[#{Time.now.strftime('%H:%M:%S')}] 周期 ##{cycle} | 发射中 (TX)..."
      
      # 写入 15s 正弦波
      SAMPLES_PER_STEP.times do |i|
        sample = Math.sin(2 * Math::PI * FREQUENCY * (i.to_f / SAMPLE_RATE))
        aplay.write([ (sample * AMPLITUDE * 32767).round ].pack('s<'))
      end
      aplay.close # 15s 结束，主动关闭 aplay 释放设备
      
    rescue Errno::EPIPE
      puts "⚠️ 写入时管道断开，设备可能在发射中途掉电。"
      exit
    end
  end

  # 3. 接收/冷却阶段
  puts "[#{Time.now.strftime('%H:%M:%S')}] 休息中 (RX)..."
  sleep DURATION 
end