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[/] [sockit_owm/] [trunk/] [demo/] [Terasic_DE1/] [software/] [onewire_ucosii/] [onewire_ucosii.c] - Blame information for rev 3

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1 3 iztok
/*************************************************************************
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* Copyright (c) 2004 Altera Corporation, San Jose, California, USA.      *
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* All rights reserved. All use of this software and documentation is     *
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* subject to the License Agreement located at the end of this file below.*
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**************************************************************************
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* Description:                                                           *
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* The following is a simple hello world program running MicroC/OS-II.The *
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* purpose of the design is to be a very simple application that just     *
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* demonstrates MicroC/OS-II running on NIOS II.The design doesn't account*
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* for issues such as checking system call return codes. etc.             *
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*                                                                        *
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* Requirements:                                                          *
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*   -Supported Example Hardware Platforms                                *
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*     Standard                                                           *
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*     Full Featured                                                      *
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*     Low Cost                                                           *
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*   -Supported Development Boards                                        *
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*     Nios II Development Board, Stratix II Edition                      *
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*     Nios Development Board, Stratix Professional Edition               *
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*     Nios Development Board, Stratix Edition                            *
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*     Nios Development Board, Cyclone Edition                            *
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*   -System Library Settings                                             *
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*     RTOS Type - MicroC/OS-II                                           *
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*     Periodic System Timer                                              *
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*   -Know Issues                                                         *
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*     If this design is run on the ISS, terminal output will take several*
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*     minutes per iteration.                                             *
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**************************************************************************/
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#include <stdio.h>
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#include "includes.h"
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#include "ownet.h"
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#include "temp10.h"
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#include "findtype.h"
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// defines
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#define MAXDEVICES         20
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#define ONEWIRE_P           0
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// local functions
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void DisplaySerialNum(uchar sn[8]);
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/* Definition of Task Stacks */
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#define   TASK_STACKSIZE       2048
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OS_STK    task1_stk[TASK_STACKSIZE];
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OS_STK    task2_stk[TASK_STACKSIZE];
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/* Definition of Task Priorities */
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#define TASK1_PRIORITY      1
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#define TASK2_PRIORITY      2
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/* Prints "Hello World" and sleeps for three seconds */
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void task1(void* pdata)
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{
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          uchar FamilySN[MAXDEVICES][8];
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          float current_temp;
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          int i = 0;
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          int j = 0;
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          int NumDevices = 0;
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          SMALLINT didRead = 0;
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          //use port number for 1-wire
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          uchar portnum = ONEWIRE_P;
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          //----------------------------------------
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          // Introduction header
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          printf("\r\nTemperature\r\n");
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      // attempt to acquire the 1-Wire Net
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          if (!owAcquire(portnum,NULL))
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          {
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             printf("Acquire failed\r\n");
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             while(owHasErrors())
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                printf("  - Error %d\r\n", owGetErrorNum());
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             return;
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          }
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          printf("Acquire done\r\n");
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          do
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          {
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             j = 0;
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             // Find the device(s)
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             NumDevices = FindDevices(portnum, FamilySN, 0x28, MAXDEVICES);
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             if (NumDevices>0)
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             {
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                printf("\r\n");
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                // read the temperature and print serial number and temperature
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                for (i = NumDevices; i; i--)
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                {
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                   printf("(%d) ", j++);
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                   DisplaySerialNum(FamilySN[i-1]);
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                   didRead = ReadTemperature(portnum, FamilySN[i-1],&current_temp);
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                   if (didRead)
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                   {
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                      printf(" %5.1f Celsius\r\n", current_temp);
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                   }
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                   else
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                   {
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                      printf("  Convert failed.  Device is");
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                      if(!owVerify(portnum, FALSE))
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                         printf(" not");
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                      printf(" present.\r\n");
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                      while(owHasErrors())
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                         printf("  - Error %d\r\n", owGetErrorNum());
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                   }
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                }
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             }
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             else
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                printf("No temperature devices found!\r\n");
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             printf("\r\nPress any key to continue\r\n");
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             i = getchar();
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          }
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          while (i!='q');
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          // release the 1-Wire Net
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          owRelease(portnum);
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}
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/* Prints "Hello World" and sleeps for three seconds */
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void task2(void* pdata)
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{
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  while (1)
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  {
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    printf("Hello from task2\n");
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    OSTimeDlyHMSM(0, 0, 3, 0);
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  }
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}
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/* The main function creates two task and starts multi-tasking */
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int main(void)
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{
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  printf("Hello before OS\n");
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  OSTaskCreateExt(task1,
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                  NULL,
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                  (void *)&task1_stk[TASK_STACKSIZE-1],
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                  TASK1_PRIORITY,
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                  TASK1_PRIORITY,
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                  task1_stk,
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                  TASK_STACKSIZE,
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                  NULL,
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                  0);
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  OSTaskCreateExt(task2,
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                  NULL,
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                  (void *)&task2_stk[TASK_STACKSIZE-1],
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                  TASK2_PRIORITY,
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                  TASK2_PRIORITY,
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                  task2_stk,
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                  TASK_STACKSIZE,
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                  NULL,
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                  0);
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  OSStart();
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  return 0;
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}
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/******************************************************************************
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*                                                                             *
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* License Agreement                                                           *
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*                                                                             *
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* Copyright (c) 2004 Altera Corporation, San Jose, California, USA.           *
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* All rights reserved.                                                        *
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*                                                                             *
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* Permission is hereby granted, free of charge, to any person obtaining a     *
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* copy of this software and associated documentation files (the "Software"),  *
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* to deal in the Software without restriction, including without limitation   *
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
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* and/or sell copies of the Software, and to permit persons to whom the       *
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* Software is furnished to do so, subject to the following conditions:        *
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*                                                                             *
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* The above copyright notice and this permission notice shall be included in  *
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* all copies or substantial portions of the Software.                         *
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*                                                                             *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
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* DEALINGS IN THE SOFTWARE.                                                   *
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*                                                                             *
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* This agreement shall be governed in all respects by the laws of the State   *
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* of California and by the laws of the United States of America.              *
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* Altera does not recommend, suggest or require that this reference design    *
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* file be used in conjunction or combination with any other product.          *
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******************************************************************************/
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// -------------------------------------------------------------------------------
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// Read and print the serial number.
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//
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void DisplaySerialNum(uchar sn[8])
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{
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   int i;
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   for (i = 7; i>=0; i--)
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      printf("%02X", (int)sn[i]);
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}

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