50 lines
1.8 KiB
Ruby
Executable File
50 lines
1.8 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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# encoding: utf-8
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# ruby: 2.4.1
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require 'serialport'
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DEBUG = true # show communication
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unless ARGV.length > 0 and File.exist?(ARGV[0]) then
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puts "this script will configure HC-05 bluetooth modules"
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puts "provide path to serial port as argument"
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exit
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end
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def send(at)
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puts "< "+at if DEBUG # output request
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@serial.write(at) # send request
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@serial.write("\r\n") unless at.end_with?("\r\n")
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@serial.flush
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sleep 0.1
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response = ""
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until response.end_with?("OK") do
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activity = IO.select([@serial],nil,nil,3) # wait for response
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return nil unless activity # no response received
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response += @serial.read(1) # get response
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end
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puts "> "+response if DEBUG # output response
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return false unless response.end_with?("OK")
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return response.chomp.gsub(/OK$/, "").chomp
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end
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@serial = SerialPort.open(ARGV[0],{ baud: 38400, databits: 8, parity: SerialPort::NONE, stop_bit: 1, flow_control: SerialPort::NONE})
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@serial.baud = 38400 # sometimes the baud rate does not get set
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@serial.read_timeout = 3000 # don't wait forever for an answer (in ms)
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# commands to send
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# get some general information
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commands = ["AT", "AT+VERSION?", "AT+ADDR?", "AT+ROLE?", "AT+UART?", "AT+PSWD?", "AT+BIND?"]
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#commands << "AT+NAME?" # somehow this does not work
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commands << "AT+ORGL" # reset of factory settings
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commands << 'AT+NAME="dachtuer"' # set name
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commands << "AT+PSWD=1234" # set pin (1234 by default)
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commands << "AT+UART=115200,0,2" # set usual baud rate (even parity, to be compatible with the bootloader)
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commands << "AT+RESET" # reset to take effect (goes into non ART command mode)
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# send all commands
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commands.each do |command|
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raise "error communicating will HC-05. ensure it is in AT mode by pressing on button while powering up" unless send(command)
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end
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@serial.close
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