DAC Signals generation example

  ******************** (C) COPYRIGHT 2014 STMicroelectronics *******************
  * @file    DAC/DAC_SignalsGeneration/readme.txt 
  * @author  MCD Application Team
  * @version V1.4.0
  * @date    24-July-2014
  * @brief   Description of the DAC Signals generation example.
  ******************************************************************************
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
   

Example Description

This example provides a short description of how to use the DAC peripheral to generate several signals using DMA controller. When the user presses the Tamper push-button, DMA transfers the two selected waveforms to DAC. For each press on Tamper button, 2 signals has been selected and monitored on the two dac channels:

• Sine waveForm (Channel 1) and Escalator waveform (Channel 2).
• Noise waveform (Channel 1) and Triangle waveform (Channel 2).

Note:

The Dual DAC Channels is only available for the STM32F072, STM32F042 and STM32F091 devices.

For the STM32F051, STM32F031 and STM32F030 devices, one signal has been selected and monitored on the DAC Channel1

• Escalator waveForm (Channel 1).
• Sine waveform (Channel 1).

Directory contents

• DAC/DAC_SignalsGeneration/stm32f0xx_conf.h Library Configuration file
• DAC/DAC_SignalsGeneration/stm32f0xx_it.c Interrupt handlers
• DAC/DAC_SignalsGeneration/stm32f0xx_it.h Interrupt handlers header file
• DAC/DAC_SignalsGeneration/main.c Main program
• DAC/DAC_SignalsGeneration/main.h Header for main.c module
• DAC/DAC_SignalsGeneration/system_stm32f0xx.c STM32F0xx system source file

Note:

The "system_stm32f0xx.c" is generated by an automatic clock configuration tool and can be easily customized to meet user application requirements. To select different clock setup, use the "STM32F0xx_Clock_Configuration_VX.Y.Z.xls" provided with the AN4055 package available on ST Microcontrollers

Hardware and Software environment

• This example runs on STM32F0xx devices.

• This example has been tested with STMicroelectronics STM320518-EVAL and STM32072B-EVAL including respectively STM32F051R8T6 and STM32F072VBT6 devices and can be easily tailored to any other supported device and development board

• STM320518-EVAL Set-up
  • Use TAMPER push-button connected to PC13.
  • Connect PA4 (DAC Channel1) pin to an oscilloscope.
  • Make sure that JP13 is open.
• STM32072B-EVAL Set-up
  • Use TAMPER push-button connected to PC13.
  • Connect PA4 (DAC Channel1) and PA5 (DAC Channel2) pins to an oscilloscope.
  • Make sure that JP20 is open.

How to use it ?

In order to make the program work, you must do the following :

• Copy all source files from this example folder to the template folder under Project
• Open your preferred toolchain
• If the used device is STM32F051R8T6 choose STM32F051 project
  • Add the following files to the project source list
    • Utilities\STM32_EVAL\STM320518_EVAL\stm320518_eval.c
• If the used device is STM32F072VBT6 choose STM32F072 project
  • Add the following files to the project source list
    • Utilities\STM32_EVAL\STM32072B_EVAL\stm32072b_eval.c
• Rebuild all files and load your image into target memory
• Run the example

© COPYRIGHT STMicroelectronics