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101 lines
4.6 KiB
Plaintext
101 lines
4.6 KiB
Plaintext
/**
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@page ADC_SingleConversion_TriggerSW ADC example
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@verbatim
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******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
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* @file Examples_LL/ADC/ADC_SingleConversion_TriggerSW/readme.txt
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* @author MCD Application Team
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* @brief Description of the ADC_SingleConversion_TriggerSW example.
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******************************************************************************
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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@endverbatim
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@par Example Description
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This example describes how to use a ADC peripheral to perform
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a single ADC conversion of a channel, at each software start;
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Example using programming model: polling
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(for programming models interrupt or DMA transfer, refer to
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other examples);
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This example is based on the STM32F4xx ADC LL API;
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peripheral initialization done using LL unitary services functions
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for optimization purpose (performance and size).
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Example configuration:
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ADC is configured to convert a single channel, in single conversion mode,
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from SW trigger.
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Example execution:
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At each press on User Button, the ADC performs 1 conversion of the selected channel.
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Software polls for conversion completion.
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When conversion is completed, main program reads conversion data
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from ADC data register and stores it into a variable, LED2 is turned on.
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For debug: variables to monitor with debugger watch window:
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- "uhADCxConvertedData": ADC group regular conversion data
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- "uhADCxConvertedData_Voltage_mVolt": ADC conversion data computation to physical values
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Connection needed:
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None.
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Note: Optionally, a voltage can be supplied to the analog input pin (cf pin below),
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between 0V and Vdda=3.3V, to perform a ADC conversion on a determined
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voltage level.
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Otherwise, this pin can be let floating (in this case ADC conversion data
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will be undetermined).
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Other peripherals used:
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1 GPIO for User Button
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1 GPIO for LED2
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1 GPIO for analog input: PA.04 (Arduino connector CN8 pin A2, Morpho connector CN7 pin 32)
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@par Directory contents
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- ADC/ADC_SingleConversion_TriggerSW/Inc/stm32f4xx_it.h Interrupt handlers header file
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- ADC/ADC_SingleConversion_TriggerSW/Inc/main.h Header for main.c module
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- ADC/ADC_SingleConversion_TriggerSW/Inc/stm32_assert.h Template file to include assert_failed function
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- ADC/ADC_SingleConversion_TriggerSW/Src/stm32f4xx_it.c Interrupt handlers
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- ADC/ADC_SingleConversion_TriggerSW/Src/main.c Main program
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- ADC/ADC_SingleConversion_TriggerSW/Src/system_stm32f4xx.c STM32F4xx system source file
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@par Hardware and Software environment
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- This example runs on STM32F411xx devices.
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- This example has been tested with NUCLEO-F411RE board and can be
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easily tailored to any other supported device and development board.
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@par How to use it ?
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In order to make the program work, you must do the following :
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- Open your preferred toolchain
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- Rebuild all files and load your image into target memory
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- Run the example
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* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
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*/
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