Subversion Repositories sockit_owm

/*

 * "Hello World" example.

 *

 * This example prints 'Hello from Nios II' to the STDOUT stream. It runs on

 * the Nios II 'standard', 'full_featured', 'fast', and 'low_cost' example

 * designs. It runs with or without the MicroC/OS-II RTOS and requires a STDOUT

 * device in your system's hardware.

 * The memory footprint of this hosted application is ~69 kbytes by default

 * using the standard reference design.

 *

 * For a reduced footprint version of this template, and an explanation of how

 * to reduce the memory footprint for a given application, see the

 * "small_hello_world" template.

 *

 */

#include <stdio.h>

#include "system.h"

#include "ownet.h"

#include "findtype.h"

#include "temp10.h"

#include "temp28.h"

#include "temp42.h"

// defines

#define MAXDEVICES         20

#define ONEWIRE_P           0

// local functions

void DisplaySerialNum(uchar sn[8]);

int main()

{

  uchar FamilySN[MAXDEVICES][8];

  float current_temp;

  int i = 0;

  int j = 0;

  int NumDevices = 0;

  SMALLINT didRead = 0;

  //use port number for 1-wire

  uchar portnum = ONEWIRE_P;

  //----------------------------------------

  // Introduction header

  printf("\r\nTemperature device demo:\r\n");

  // attempt to acquire the 1-Wire Net

  if (!owAcquire(portnum,NULL))

  {

     printf("Acquire failed\r\n");

#ifdef SOCKIT_OWM_ERR_ENABLE

     while(owHasErrors())

        printf("  - Error %d\r\n", owGetErrorNum());

     return 1;

#endif

  }

  do

  {

     j = 0;

     // Find the device(s)

     NumDevices  = 0;

     NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x10, MAXDEVICES-NumDevices);

     NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x28, MAXDEVICES-NumDevices);

     NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x42, MAXDEVICES-NumDevices);

     if (NumDevices)

     {

        printf("\r\n");

        // read the temperature and print serial number and temperature

        for (i = NumDevices; i; i--)

        {

           printf("(%d) ", j++);

           DisplaySerialNum(FamilySN[i-1]);

           if (FamilySN[i-1][0] == 0x10)

              didRead = ReadTemperature10(portnum, FamilySN[i-1],&current_temp);

           if (FamilySN[i-1][0] == 0x28)

              didRead = ReadTemperature28(portnum, FamilySN[i-1],&current_temp);

           if (FamilySN[i-1][0] == 0x42)

              didRead = ReadTemperature42(portnum, FamilySN[i-1],&current_temp);

           if (didRead)

           {

              printf(" %5.1f Celsius\r\n", current_temp);

           }

           else

           {

              printf("  Convert failed.  Device is");

              if(!owVerify(portnum, FALSE))

                 printf(" not");

              printf(" present.\r\n");

#ifdef SOCKIT_OWM_ERR_ENABLE

              while(owHasErrors())

                 printf("  - Error %d\r\n", owGetErrorNum());

#endif

           }

        }

     }

     else

        printf("No temperature devices found!\r\n");

     printf("\r\nPress any key to continue\r\n");

     i = getchar();

  }

  while (i!='q');

  // release the 1-Wire Net

  owRelease(portnum);

  return 0;

}

// -------------------------------------------------------------------------------

// Read and print the serial number.

//

void DisplaySerialNum(uchar sn[8])

{

   int i;

   for (i = 7; i>=0; i--)

      printf("%02X", (int)sn[i]);

}