Module: Prremote::Commands::SerialHelpers

Included in:
Deploy, Ls, Run
Defined in:
lib/prremote/commands/serial_helpers.rb

Instance Method Summary collapse

Instance Method Details

#normalize(str) ⇒ Object 



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# File 'lib/prremote/commands/serial_helpers.rb', line 22

def normalize(str)
  str.gsub("\r\n", "\n").gsub("\r", '')
end

#wait_for_ready(serial) ⇒ Object 



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# File 'lib/prremote/commands/serial_helpers.rb', line 4

def wait_for_ready(serial)
  # On macOS, USB CDC TX buffers can be dropped when the host reopens the port,
  # leaving the device stuck in getchar() without re-sending READY.
  # Sending Ctrl+C forces the device to restart its READY loop.
  sleep 0.1
  serial.write("\x03") rescue nil

  buf = +''
  deadline = Time.now + 10
  loop do
    buf << normalize(serial.read(256) || '')
    return if buf.include?('READY ')
    raise 'Timeout waiting for device. Run `prremote reset` if a script is running.' if Time.now > deadline

    sleep 0.05
  end
end