STM32F0xx Standard Peripherals Firmware Library: Communication between I2C and STLM75 Temperature sensor

STM32F0xx Standard Peripherals Library

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Communication between I2C and STLM75 Temperature sensor 
  ******************** (C) COPYRIGHT 2014 STMicroelectronics *******************
  * @file    I2C/I2C_TSENSOR/readme.txt 
  * @author  MCD Application Team
  * @version V1.4.0
  * @date    24-July-2014
  * @brief   Description of the I2C TSENSOR example.
  ******************************************************************************
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
Example Description

This example provides a description of how to use the I2C to communicate with an STLM75 (or a compatible device) I2C temperature sensor is mounted on the STM320518-EVAL board and used to get instantaneous external temperature (-55�C to +125�C).

Thanks to STM32 I2C SMBus feature, we can easily monitor the temperature variations. This is managed by the SMBus Alert which is generating a dedicated interrupt informing the system that the temperature is out of the selected ranges.

The user can configure the TOS and THYS thanks to a dedicated define values in the code.

By default the EVAL demo are setting them to (see main.c file):

#define TEMPERATURE_THYS 31 #define TEMPERATURE_TOS 32

Directory contents
Note:
The "system_stm32f0xx.c" is generated by an automatic clock configuration tool and can be easily customized to meet user application requirements. To select different clock setup, use the "STM32F0xx_Clock_Configuration_VX.Y.Z.xls" provided with the AN4055 package available on ST Microcontrollers
Hardware and Software environment
  • This example runs on STM32F0xx devices.
  • This example has been tested with STMicroelectronics STM320518-EVAL and STM32072B-EVAL including respectively STM32F051R8T6 and STM32F072VBT6 devices and can be easily tailored to any other supported device and development board
  • STM320518-EVAL Set-up
    • STLM75 I2C temperature sensor is already available on this board.
  • STM32072B-EVAL Set-up
    • STLM75 I2C temperature sensor is already available on this board.
How to use it ?

In order to make the program work, you must do the following :

  • Copy all source files from this example folder to the template folder under Project
  • Open your preferred toolchain
  • If the used device is STM32F051R8T6 choose STM32F051 project
    • Add the following files to the project source list
      • Utilities/STM32_EVAL/STM320518_EVAL/stm320518_eval_i2c_tsensor.c
      • Utilities/STM32_EVAL/STM320518_EVAL/stm320518_eval.c
      • Utilities/STM32_EVAL/STM320518_EVAL/stm320518_eval_lcd.c
  • If the used device is STM32F072VBT6 choose STM32F072 project
    • Add the following files to the project source list
      • Utilities/STM32_EVAL/STM32072B_EVAL/stm32072b_eval_i2c_tsensor.c
      • Utilities/STM32_EVAL/STM32072B_EVAL/stm32072b_eval.c
      • Utilities/STM32_EVAL/STM32072B_EVAL/stm32072b_eval_lcd.c
  • Rebuild all files and load your image into target memory
  • Run the example

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