/**
@page ADC_RegularConversion_Polling conversion using Polling
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file ADC/ADC_RegularConversion_Polling/readme.txt
* @author MCD Application Team
* @brief Description of the ADC RegularConversion Polling example.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Example Description
How to use the ADC in Polling mode to convert data through the HAL API.
When the end of conversion occurs, the converted data of ADC1 DR register is
affected to the uhADCxConvertedValue variable.
Conversion time (reference manual, "Reset and clock control" and "ADC clocks" sections):
1) the system clock is 180 MHz. APB2 = 90MHz and ADC clock = APB2/4
2) __HAL_RCC_ADC_CONFIG() macro in HAL_ADC_MspInit() API sets the system clock as ADC asynchronous clock source
2) ClockPrescaler field of initialization structure is set to ADC_CLOCKPRESCALER_PCLK_DIV4
=> the input ADC clock is set in asynchronous clock mode
=> the input ADC clock is the undivided system clock
Sampling time is set to ADC_SAMPLETIME_6CYCLES_5 (6.5 cycles).
ConvTime = Sampling time + 12.5 ADC clock cycles.
= 19 clock cycles
= (19 / 22.5 MHz) = 844.4 ns
User can vary the ADC_CHANNEL_4 voltage using the Eval Board potentiometer (CN21) connected to PA.04.
SB94 must be closed to use the potentiometer.
STM32 Eval boards LEDs can be used to monitor the transfer status:
- LED3 is ON when there is an error in initialization.
@par Keywords
Analog, ADC, Analog to Digital Converter, Regular Conversion, Polling, Single Conversion
@par Directory contents
- ADC/ADC_RegularConversion_Polling/Inc/stm32f4xx_hal_conf.h HAL configuration file
- ADC/ADC_RegularConversion_Polling/Inc/stm32f4xx_it.h Interrupt handlers header file
- ADC/ADC_RegularConversion_Polling/Inc/main.h Header for main.c module
- ADC/ADC_RegularConversion_Polling/Src/stm32f4xx_it.c Interrupt handlers
- ADC/ADC_RegularConversion_Polling/Src/main.c Main program
- ADC/ADC_RegularConversion_Polling/Src/stm32f4xx_hal_msp.c HAL MSP file
- ADC/ADC_RegularConversion_Polling/Src/system_stm32f4xx.c STM32F4xx system source file
@par Hardware and Software environment
- This example runs on STM32F446xx devices.
- This example has been tested with STM32446E-EVAL board revB and can be
easily tailored to any other supported device and development board.
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the example
*/
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