// Raspberry Pi LPC1114 I/O Processor Square Wave Output Test

// Copyright (C)2018, Philip Munts, President, Munts AM Corp.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

// LPC1114 GPIO -- Square wave output

#include <cstdio>
#include <cstdlib>
#include <string>

#include <LPC1114_IOP.h>

#define SERVERNAME	((argc == 2) ? argv[1] : "localhost")
#define FREQUENCY	atoi(argv[2])

int main(int argc, char *argv[])
{
  puts("\nRaspberry Pi LPC1114 I/O Processor Expansion Board Square Wave Output Test\n");

  try
  {
    LPC1114_IOP::Transport_Class server(SERVERNAME);
    LPC1114_IOP::Timer CT32B1(&server, LPC1114_CT32B1);

    // Configure CT32B1 MAT0 output (GPIO0) to emit a square wave

    CT32B1.ConfigurePrescaler(1);
    CT32B1.ConfigureMatch(LPC1114_TIMER_MATCH0, PCLK_FREQUENCY/FREQUENCY/2,
      LPC1114_TIMER_MATCH_OUTPUT_TOGGLE, false, true, false);
    CT32B1.ConfigureMode(LPC1114_TIMER_MODE_PCLK);
  }

  catch (std::string msg)
  {
    fprintf(stderr, "EXCEPTION: %s\n\n", msg.c_str());
    exit(1);
  }
}