/**
@page ADC_ContinuousConversion_TriggerSW_Init ADC example
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file Examples_LL/ADC/ADC_ContinuousConversion_TriggerSW_Init/readme.txt
* @author MCD Application Team
* @brief Description of the ADC_ContinuousConversion_TriggerSW_Init 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
This example describes how to use a ADC peripheral to perform
continuous ADC conversions of a channel, from a SW start;
This example is based on the STM32F4xx ADC LL API;
peripheral initialization done using LL unitary services functions
for optimization purpose (performance and size).
Example configuration:
ADC is configured to convert a single channel, in continuous conversion mode,
from SW trigger.
Example execution:
From the first press on User Button, the ADC converts the selected channel
continuously.
After the first trigger (software start in this example), following conversions
are launched successively automatically, indefinitely.
Software polls for the first conversion completion
and stores it into a variable, LED2 is turned on.
Main program reads frequently ADC conversion data
(without waiting for end of each conversion: software reads data
when main program execution pointer is available and can let
some ADC conversions data unread and overwritten by newer data)
and stores it into the same variable.
For debug: variables to monitor with debugger watch window:
- "uhADCxConvertedData": ADC group regular conversion data
- "uhADCxConvertedData_Voltage_mVolt": ADC conversion data computation to physical values
Connection needed:
None.
Note: Optionally, a voltage can be supplied to the analog input pin (cf pin below),
between 0V and Vdda=3.3V, to perform a ADC conversion on a determined
voltage level.
Otherwise, this pin can be let floating (in this case ADC conversion data
will be undetermined).
Other peripherals used:
1 GPIO for User Button
1 GPIO for LED2
1 GPIO for analog input: PA.04 (Arduino connector CN8 pin A2, Morpho connector CN7 pin 32)
@par Keywords
ADC, ADC channel, conversion, single channel, single conversion mode, interrupt,
@par Directory contents
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Inc/stm32f4xx_it.h Interrupt handlers header file
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Inc/main.h Header for main.c module
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Inc/stm32_assert.h Template file to include assert_failed function.
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Src/stm32f4xx_it.c Interrupt handlers
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Src/main.c Main program
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Src/system_stm32f4xx.c STM32F4xx system source file
@par Hardware and Software environment
- This example runs on STM32F411xx devices.
- This example has been tested with NUCLEO-F411RE board 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
*/
3d6be4bd40