Multifunction clock made for MicroMade's DSM-51

Dependency

sdcc

Compilation

sdcc clock.c

In order to use program on DSM-51 emulator you will need to compile the program with modified sdcc. This modification requires switching mcs51.lib library file attatched in this repository. Usually you can find this library in

/usr/share/sdcc/lib/small/mcs51.lib

Once that's done recompile the program and run clock.ihx with DSM-51 emulator.

Features

• Setting time using multiplex keyboard

  

  • Left and right arrows - enter edit mode
  • Up and down arrrows - edit selected field's value (only in edit mode)
  • Enter - save changes
  • Esc - discard changes

• Sending commands via serial port (all commands case insensitive)

  settings for serial transmission - baudrate = 4800, bits between bytes 2, no parity bit

  

  • set hh.mm.ss - set the time in format hours.minutes.seconds
  • get - outputs curretn time to serial port
  • edit - enter edit mode
  • Program is immune to incorrect commands, those will still be stored in history but will be labeled as ERR

• View serial port command history on LCD display use up and down arrow keys on matrix keyboard to scroll through history