/**
  @page SDADC_Voltmeter SDADC input voltage measurement
  
  @verbatim
  ******************** (C) COPYRIGHT 2012 STMicroelectronics *******************
  * @file    SDADC/SDADC_Voltmeter/readme.txt 
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    20-September-2012
  * @brief   SDADC input voltage measurement Example 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.
  *
  ******************************************************************************
  @endverbatim

@par Example Description 

This example aims to show how to use the 16-bit resolution Sigma-Delta
Analog-to-Digital converter to perform precise voltage measurement when input 
voltage is ranges between 0V and VREF/gain.

 - The SDADC is configured in Single Ended Zero Reference mode: the input range
   is 0V to VREF/gain.
   In this example, the gain is set to 1 so all the range [0, VREF] is used.
 - The SDADC is configured in injected continuous mode. At each end of conversion
   an interrupt occurs and the SDADC data register is read in SDADC ISR.
 - In Single Ended Zero Reference mode, the input voltage is computed using the
   following formula: (InjectedConvData + 32768) * SDADCVREF / 65535
   With:
      - SDADCVREF is the SDADC reference voltage which is set to 3.3V on the 
      STM32373C-EVAL evaluation board.
      - InjectedConvData is the digital value read from SDADC data register
 - Connect a variable power supply 0-3.3V to SDADC1 channel 5P mapped on pin PB1.
   The potentiometer RV3 available on STM32373C-EVAL can be used. 
   The measured voltage on PB1 is displayed on the LCD mounted on the STM32373C-EVAL
   evaluation board.
 
@par Directory contents 

  - SDADC/SDADC_Voltmeter/stm32f37x_conf.h    Library Configuration file
  - SDADC/SDADC_Voltmeter/stm32f37x_it.c      Interrupt handlers
  - SDADC/SDADC_Voltmeter/stm32f37x_it.h      Interrupt handlers header file
  - SDADC/SDADC_Voltmeter/main.c              Main program
  - SDADC/SDADC_Voltmeter/main.h              Main header
  - SDADC/SDADC_Voltmeter/system_stm32f37x.c  STM32F37x system source file
  
@note The "system_stm32f37x.c" is generated by an automatic clock configuration 
      system and can be easily customized to your own configuration. 
      To select different clock setup, use the "STM32F37x_Clock_Configuration_V1.0.0.xls" 
      provided with the AN4132 package available on <a href="http://www.st.com/internet/mcu/family/141.jsp">  ST Microcontrollers </a>
         
@par Hardware and Software environment

  - This example runs on STM32F37x Devices.
  
  - This example has been tested with STMicroelectronics STM32373C-EVAL (STM32F37x)
    evaluation board and can be easily tailored to any other supported device 
    and development board.

  - STM32373C-EVAL Set-up
    - Make sure that jumper JP16 and JP17 are fitted.

@par 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\STM32F37x_StdPeriph_Templates
 - Open your preferred toolchain 
 - Rebuild all files and load your image into target memory
 - Run the example

 * <h3><center>&copy; COPYRIGHT STMicroelectronics</center></h3>
 */