/**
@page ADC_ContinuousConversion_TriggerSW_Init ADC example
@verbatim
******************************************************************************
* @file Examples_LL/ADC/ADC_ContinuousConversion_TriggerSW_Init/readme.txt
* @author MCD Application Team
* @brief Description of the ADC_ContinuousConversion_TriggerSW_Init example.
******************************************************************************
*
* Copyright (c) 2020 STMicroelectronics. All rights reserved.
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
@endverbatim
@par Example Description
How to use an ADC peripheral to perform continuous ADC conversions on a
channel, from a software start.
This example is based on the STM32WLxx ADC LL API.
The peripheral initialization is done using LL initialization function
to demonstrate LL init usage.
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 push-button (B1), 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
LED2 is blinking every 1 sec in case of error.
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 push-button (B1)
1 GPIO for LED2
1 GPIO for analog input: PB.02 (Arduino connector CN8 pin A1, Morpho connector CN7 pin 30)
@par Keywords
ADC, analog digital converter, analog, conversion, voltage, channel, analog input, trigger
@par Directory contents
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Inc/stm32wlxx_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/stm32wlxx_it.c Interrupt handlers
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Src/main.c Main program
- ADC/ADC_ContinuousConversion_TriggerSW_Init/Src/system_stm32wlxx.c STM32WLxx system source file
@par Hardware and Software environment
- This example runs on STM32WL55JCIx devices.
- This example has been tested with NUCLEO-WL55JC RevC 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
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
*/
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