ADC Basic Example Description

  ******************** (C) COPYRIGHT 2014 STMicroelectronics *******************
  * @file    ADC/ADC_BatteryChargeMonitoring/readme.txt 
  * @author  MCD Application Team
  * @version V1.4.0
  * @date    24-July-2014
  * @brief   ADC Battery charge monitoring Description.
  ******************************************************************************
  *
  * 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 describes how to measure VBAT voltage using ADC1 regular channel 18. The measured value corresponds to VBAT/2; as the VBAT voltage could be higher than VDDA, to ensure the correct operation of the ADC, the VBAT pin is internally connected to a bridge divider by 2.

User can display the VBAT voltage on the EVAL Board LCD

Directory contents

• ADC/BatteryChargeMonitoring/stm32f0xx_conf.h Library Configuration file
• ADC/BatteryChargeMonitoring/stm32f0xx_it.c Interrupt handlers
• ADC/BatteryChargeMonitoring/stm32f0xx_it.h Interrupt handlers header file
• ADC/BatteryChargeMonitoring/main.c Main program
• ADC/BatteryChargeMonitoring/main.h Main program header file
• ADC/BatteryChargeMonitoring/system_stm32f0xx.c STM32F0xx system source file

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
  • Make sure that jumper JP12 is in position 2-3 to connect the 3V battery to VBAT pin
• STM32072B-EVAL Set-up
  • Make sure that jumper JP11 is in position 2-3 to connect the 3V battery to VBAT pin

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.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.c

Utilities\STM32_EVAL\STM32072B_EVAL\stm32072b_eval_lcd.c

• Rebuild all files and load your image into target memory
• Run the example

© COPYRIGHT STMicroelectronics