airbourne/airbourne/examples/i2c_sniff/main.cpp

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/*
 * Copyright (c) 2017, James Jackson
 *
 * All rights reserved.
 *
 * 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.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * 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.
 */

#include "system.h"
#include "i2c.h"
#include "led.h"
#include "vcp.h"
#include "printf.h"

VCP *uartPtr = NULL;

static void _putc(void *p, char c)
{
  (void)p; // avoid compiler warning about unused variable
  uartPtr->put_byte(c);
}

int main()
{

  systemInit();

  VCP vcp;
  vcp.init();
  uartPtr = &vcp;
  init_printf(NULL, _putc);

  LED warn;
  warn.init(LED1_GPIO, LED1_PIN);
  LED info;
  info.init(LED2_GPIO, LED2_PIN);

  warn.on();
  I2C i2c[NUM_I2C];
  for (int i = 0; i < NUM_I2C; i++)
  {
    i2c[i].init(&i2c_config[i]);
  }
  warn.off();

  while (1)
  {
    info.toggle();
    for (int i = 0; i < NUM_I2C; i++)
    {
      warn.toggle();
      for (int j = 0; j < 128; j++)
      {
        uint8_t data = 0;
        int8_t result  = i2c[i].write(j, 0xFF, data);
        while (result < 0)
        {
          result  = i2c[i].write(j, 0xFF, data);
        }
        if (result > 0)
        {
          printf("I2C%d: found device at 0x%X\n", i+1, j);
        }
        delay(5);
      }
    }
    printf("--------------------------\n");
    delay(1000);
  }
}