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92 lines
4.2 KiB
Plaintext
92 lines
4.2 KiB
Plaintext
/**
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@page DAC_GenerateConstantSignal_TriggerSW DAC example
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@verbatim
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******************** (C) COPYRIGHT 2016 STMicroelectronics *******************
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* @file Examples_LL/DAC/DAC_GenerateConstantSignal_TriggerSW/readme.txt
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* @author MCD Application Team
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* @brief Description of the DAC_GenerateConstantSignal_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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How to use the DAC peripheral to generate a constant voltage signal. This
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example is based on the STM32F0xx DAC LL API. The peripheral
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initialization uses LL unitary service functions for optimization purposes
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(performance and size).
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Example configuration:
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One DAC channel (DAC1 channel1) is configured to connect DAC channel output on GPIO pin
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to get the samples from SW (no DMA transfer) and to get conversion trigger from SW.
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Example execution:
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From the main program execution, LED is toggling quickly while waiting for
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user button press.
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Then, the DAC is configured and activated: constant signal is generated on DAC output
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indefinitely.
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DAC channel output value is provided by SW, a new value is loaded
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at each press on push button: start from 0, increased by a quarter of Vdda and
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finishing at Vdda voltage.
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Finally, LED is turned-on.
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Connection needed:
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None.
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Oscilloscope for monitoring DAC channel output (cf pin below).
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Other peripheral used:
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1 GPIO for push button
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1 GPIO for DAC channel output PA.04 (Arduino connector CN8 pin A2, Morpho connector CN7 pin 32)
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@par Directory contents
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Inc/stm32f0xx_it.h Interrupt handlers header file
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Inc/main.h Header for main.c module
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Inc/stm32_assert.h Template file to include assert_failed function
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Src/stm32f0xx_it.c Interrupt handlers
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Src/main.c Main program
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- DAC/DAC_GenerateConstantSignal_TriggerSW/Src/system_stm32f0xx.c STM32F0xx system source file
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@par Hardware and Software environment
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- This example runs on STM32F072xx devices.
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- This example has been tested with STM32F072RB-Nucleo RevC 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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