SHT11 C code Library trouble

Cree · 2013-10-28 09:04

Hi, sry i'm new to simple IDE program, I have done some c coding in school.
I had found the c code for the propeller from the following link

http://forums.parallax.com/showthread.php/148116-Sensirion-SHT11-SimpleTools-Code?highlight=sht11+code

I had tried to use it, but when I tried to make the lib/library with the header file it came with, I got an error. (unkown type name at line 104) I tried to fix it myself, but I wouldn't figure it out by searching through the forums.

Can someone help me out?

[URL="http://forums.parallax.com/showthread.php/148116-Sensirion-SHT11-SimpleTools-Code?highlight=sht11+code"]/**
[/URL]* @file sht11.h
*
* @author TDL
*
* @copyright
* Copyright (C)  2013. All Rights MIT Licensed.
*
* @brief Measure sht11 Humidity and Temperature Sensor
* 
*/


#ifndef _SHT11_H
#define _SHT11_H


#if defined(__cplusplus)
extern "C" {
#endif


//#define DEBUGSCOPE


#ifdef DEBUGSCOPE
#define scopepin 15
// Pick one of the scope triggers 
//#define TRIGREAD
#define TRIGCOMMAND
//#define TRIGRESETSEQ
//#define TRIGSTARTSEQ
//#define TRIGREADSTAUS
#endif




/* Define a structure to contain the answers calculated from
**
*/


typedef struct sht11values {
  // Keep everyting a long like Spin version
  long rawhum;      // Raw Humidity counts
  long rawtemp;     // Raw Temp counts
  long rhlin;       // Humidity linerized
  long rhtrue;      // True Humidity rhlin adjusted for a Temp not at 25 deg C
  long tempC;       // Temp in deg C
  long tempF;       // Temp in deg F
} sht11values_t;


/* Define the commands sent to the sht11
**
*/


#define  KREADTEMP      0b00000011
#define  KREADHUM       0b00000101
#define  KREADSTATUS    0b00000111
#define  KWRITESTATUS   0b00000110
#define  KSOFTRESET     0b00011110






  /*Define constants for doing fixed point math to convert raw counts to integer values
   representing floating point values*/


   /*3.3 VOLT SUPPLY ON SHT11*/


/* Pick one set of constants by un commenting the one desired*/
#define _V5DATASHEET
//#define _ORGDATASHEET




   /*Temp conversion constants from Sensirion data sheet*/
   /*Convert 10 Times to get 0.1 degrees*/
   
#ifdef _V5DATASHEET


   /*V5 Constants*/
   /*Fractional parts of constants cannot be greator than 1*/


#define   Kd1C_16_16    25991578  //  10 * 39.66 @ 3.3 Volts, is minus but do a subtract instead of sign here
#define   Kd1F_16_16    25834291  //  10 * 39.42 @ 3.3 Volts, is minus but do a subtract instead of sign here
#define   Kd2C_0_16   6554       // 10 * 0.01
#define   Kd2F_0_16   11796      // 10 * 0.018


   /*RHlin constants to compute 10 times RHlin*/
#define   Kc3_0_16   1               // 1.5955e-5 times 65536 actually 1.04 rounded up
#define   Kc3_0_24   268         // 1.5955e-5 as a 24 bit fraction ie times 2^24
#define   Kc3_0_32   85899       // 10 * 2e**-6  times 2**32
#define   Kc2_0_16   24052        // 10 * 0.0367 times 65536
#define   Kc1_16_16   1341391     // 10 * 2.0468 times 65536
 
   /*Constants to compute RH true ie RHlin adjusted for temp different than 25 Deg C
    RHtrue = (TC - 25)* (t1 + t2* SOH) + RHlin
    We have 10 times RHlin so multiply constants by 10*/


#define  Kt1_0_16    6554    // 0.1 * 65536
#define  Kt2_0_16    52      // 0.0008 * 65536


#endif  // V5 Data Sheet Copnstants




// Throw everything in so we can call it if needed during testin
int Start(int DatP, int ClkP, sht11values_t *pValues);


int SetIdle();
int StartSeq();
int ResetSeq();
int SendCommand(uint8_t Cmd);
long ReadValue();
long ReadStatusReg();
long RawToTempC(long raw);
long RawToTempF(long raw);
long ConvertC2F(long degC);
long RawToRHlin(long raw);


/* Executing Measure() will take a complete measurement of Humidity and Temp
   and pupulate the sht11values_t structure with raw and calculated values
   The user of library creates the instance of sht11values_t and a pointer to it
   to pass to the Start() function
*/


int Measure();


#if defined(__cplusplus)
}
#endif
/* __cplusplus */ 
#endif
/* _SHT11_H */ 


/**
* TERMS OF USE: MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/

Kye · 2013-10-28 10:30

Hi, you need to:

#include "stdint.h"

tdlivings · 2013-10-28 11:49

Cree
Are you using the latest version of SimpleIDE from Learn Parallax.
or trying to use the code with your own makefile.
The thread you got the code from is one of the first things I tried with Propeller C and there is newer
version I will dig out. However even the one you have builds in the SimpleIDE version back in March.

Cree · 2013-10-28 15:04

tdlivings wrote: »

Cree
Are you using the latest version of SimpleIDE from Learn Parallax.
or trying to use the code with your own makefile.
The thread you got the code from is one of the first things I tried with Propeller C and there is newer
version I will dig out. However even the one you have builds in the SimpleIDE version back in March.

It should be the latest versipn of simple ide, I dowloaded a few weeks ago.

What do u mean by makefile?

Cree · 2013-10-28 20:16

Kye wrote: »

Hi, you need to:

#include "stdint.h"

I tried, it didnt work.

This what I got:

(.init+0x22): undefined reference to `_main'collect2: ld returned 1 exit status
Done. Build Failed!

Check source for bad function call or global variable name `_main'

Kye · 2013-10-29 06:41

Hi,

The file you have ins't a piece of complete code. Its complaining about the lack of main because you just have an H file there.

tdlivings · 2013-10-29 11:12

Cree
A make file is a text file that is read by an application called make or ndmake which tells make how to build
the program from the collection of C and H files.
SimpleIDE hides this from you and it's project manager interface does it in the background for you.

Have you tried the tutorials at http://learn.parallax.com/propeller-c-tutorials and successfully built and ran
the first tutorial.

The thread you refered to in your first post was some initial trys using Propeller C by me with the sensor.
It became a simple library.
Rather than try and get the library and the project files into the right spot in your file structure of SimpleIDE
and Prop C at this time I pulled the latest into a stand alone project.
If you unzip the attached zip file to a folder under your My Projects folder and open the project SHT11Debug.side
it will build and run. You will have to edit the DatPin and ClkPin numbers to match how you wired your sensor.
Mine are 8 and 9 in the source right now.

Also have you read SimpleIDE-User-Guide.pdf

Tom

Cree · 2013-10-29 17:57

Hi tom, I found the library u mentioned in the learn section, but I dint see it at first when looking through is because there was no demo code for the sht11.

I did do the hello program for a serial lcd.

I should be good with the code you gave. Thx, I appreciate the help.

SHT11 C code Library trouble

Comments