Handheld RS232 serial data tester

By Per Emil Skjold.

Used to diagnose industrial equipment on RS232 serial protocoll.

HARDWARE:

• Arduino Uno
• LCD Button shield
• RS232 serial shield (see connection)

LIBRARY:

• LiquidCrystal https://github.com/arduino-libraries/LiquidCrystal

LCD:

• 2x16 character lcd display.
• Serial Data prints on line 1. Menu prints on line 2.

MENUS:

• Menu 1 = Baud rate
• Menu 2 = Send counter on/off
• Menu 3 = Send Preset string
• Menu 4 = Record on/off
• Menu 5 = playback
• Menu 6 = Display non chars on/off
• Menu 7 = RX bytes counter (bytes received)
• Menu 8 = Echo data back to sender.

CONNECTION:

• RX PIN 0, TX PIN 1.

HOMEPAGE:

• https://skjolddisplay.com/projects/handheld-rs232-serial-data-tester/
• https://www.youtube.com/watch?time_continue=13&v=vVRO6BWD5QU

HISTORY:

• v15 Added menu: 'Display non chars'. (Non chars is bytes below Dec32). Added menu: 'RX bytes: 0'.
• v16 Key press retrig avoided.
• v17 Added menu: Echo On/Off (returns data to sender).
• v18 New analog values for buttons. Put backlight() function in setup, and in loop as before. more info here http://arduino.cc/forum/index.php?topic=96747.0