/**
@page ADC_SingleConversion_TriggerSW_IT ADC example
@verbatim
******************************************************************************
* @file Examples/ADC/ADC_SingleConversion_TriggerSW_IT/readme.txt
* @author MCD Application Team
* @brief Description of the ADC_SingleConversion_TriggerSW_IT 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
Use ADC to convert a single channel at each SW start,
conversion performed using programming model: interrupt
Example configuration:
ADC is configured to convert a single channel, in single conversion mode,
from SW trigger.
ADC interruption enabled: EOC (end of conversion of ADC group regular).
Example execution:
The ADC performs 1 conversion of the selected channel. When conversion is completed,
ADC interruption occurs. IRQ handler callback function reads conversion data from
ADC data register and stores it into a variable, LED2 is turned on.
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, if ADC channel and DAC channel are selected on the same GPIO.
Otherwise, connect a wire between DAC channel output and ADC input.
Other peripherals used:
1 GPIO for LED
1 GPIO for analog input: PA10 (Arduino connector CN8 pin 3, Morpho connector CN7 pin 32)
DAC
1 GPIO for DAC channel output PA10 (Arduino connector CN8 pin 3, Morpho connector CN7 pin 32)
1 GPIO for push button
Board settings:
- ADC is configured to convert ADC_CHANNEL_6 (Arduino connector CN8 pin 3, Morpho connector CN7 pin 32).
- The voltage input on ADC channel is provided from DAC (DAC_CHANNEL_1).
ADC input from pin PA10 and DAC output to pin PA10:
If same pin is used no connection is required, it is done internally. Otherwise, user need to connect a wire between Arduino connector CN8 pin 3, Morpho connector CN7 pin 32 and Arduino connector CN8 pin 3, Morpho connector CN7 pin 32
- Voltage is increasing at each click on User push-button (B1), from 0 to maximum range in 4 steps.
Clicks on User push-button (B1) follow circular cycles: At clicks counter maximum value reached, counter is set back to 0.
To observe voltage level applied on ADC channel through GPIO, connect a voltmeter on
pin PA10 (Arduino connector CN8 pin 3, Morpho connector CN7 pin 32).
NUCLEO-WL55JC RevC board LED is be used to monitor the program execution status:
- Normal operation: LED2 is turned-on/off in function of ADC conversion
result.
- "On" upon conversion completion
- "Off" during conversion
- Error: In case of error, LED2 is toggling twice at a frequency of 1Hz.
@par Keywords
ADC, analog digital converter, analog, conversion, voltage, channel, analog input, trigger
@par Directory contents
- ADC/ADC_SingleConversion_TriggerSW_IT/Inc/stm32wlxx_nucleo_conf.h BSP configuration file
- ADC/ADC_SingleConversion_TriggerSW_IT/Inc/stm32wlxx_hal_conf.h HAL configuration file
- ADC/ADC_SingleConversion_TriggerSW_IT/Inc/stm32wlxx_it.h Interrupt handlers header file
- ADC/ADC_SingleConversion_TriggerSW_IT/Inc/main.h Header for main.c module
- ADC/ADC_SingleConversion_TriggerSW_IT/Src/stm32wlxx_it.c Interrupt handlers
- ADC/ADC_SingleConversion_TriggerSW_IT/Src/main.c Main program
- ADC/ADC_SingleConversion_TriggerSW_IT/Src/stm32wlxx_hal_msp.c HAL MSP module
- ADC/ADC_SingleConversion_TriggerSW_IT/Src/system_stm32wlxx.c STM32WLxx system source file
@par Hardware and Software environment
- This example runs on STM32WLxx 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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