/*
 * clock - my 60-LED clock by LPC810
 *   by uratan! 2020.6.17
 */

  <http://aid.her.jp/uratan/led/60clock.html>

/*
 * what is 'clock' for ?
 */

  This firmware makes a LED circle clock with NeoPixel 1/4 60 Ring (adafruit)
  and LPC810.
    /*
     * I/O pin usage
     *   pin#3: PIO0_3 (output) - drive WS2812B (GPIO or SPI)
     *   pin#4: PIO0_2 (input)  - U1_RxD from Ir receiver
     *   pin#5: PIO0_1 (input)  - CLKIN from external X'tal
     */

/*
 * how to use ?
 */

  You can control it with Ir transceiver - IrT. (See above web page for detail)
  There is single push-SW only.

            +---------------------------------------------------+
            |                                                   |
            |    /***** mode change by LONG_PUSH *****/         |
            V                                                   |
       +--------+     +--------+     +--------+     +--------+  |
       | clock  |---->| change |---->| change |---->| change |--+
       |  mode  |     | origin |     |  hour  |     | minute |
       +--------+     +--------+     +--------+     +--------+
           |              |              |              |
        (change)       ( inc  )       ( inc  )       ( inc  )
        ( color)       (origin)       ( hour )       (minute)

                 /******* action by SHORT_PUSH *******/

  You shall setup current time everytime power-on.

/*
 * FILES
 */
  00README.txt --- this file
  Makefile     --- Makefile for make.exe
  link.awk     --- a AWK script to generate linker script
  Startup.S    --- CPU start up
  main.c       --- main entry
  common.h     --- system shared difinitions
  common.c     --- system shared functions (uart)
  rprintf.c    --- simple printf() (from sample of WinARM_20060606.zip)
  clock.c      --- jobs as a clock
  drive.c      --- drive WS2812B, by SPI or GPIO
  uart1.c      --- handle uart1 to get Ir signal
  60clock-0NN.hex --- hex file image made

    Compiler used is gcc-4.7.1(2012-0616) from yagarto <http://www.yagarto.org/>
    You may need sh.exe and rm.exe, seek it from web please.
        (see also https://sourceforge.net/projects/yagarto/files/)

    Get LPC810 related definitions from: <http://www.lpcware.com/>
        lpcopen_2_01_lpcxpresso_nxp_lpcxpresso_812.zip
           (LPCXpresso v6.1.0_164,
            LPCOpen 2.xx software package for LPCXpresso LPC812 boead)
    then place lpc_chip_8xx_lib/inc/ to ../chip-inc/.

    Don't you have GNU awk ? use this.
      <https://sourceforge.net/projects/unxutils/>
-- 
  uratan@miomio.jp