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DAC
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DACC_software_trigger_LFSR_noise
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readme.txt

readme.txt 2.3 KB
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  1. /*!
    2. 

  2.     \file    readme.txt
    3. 

  3.     \brief   description of DACC_software_trigger_LFSR_noise example
    4. 

  4.     
    5. 

  5.     \version 2017-02-10, V1.0.0, firmware for GD32F30x
    6. 

  6.     \version 2018-10-10, V1.1.0, firmware for GD32F30x
    7. 

  7.     \version 2018-12-25, V2.0.0, firmware for GD32F30x
    8. 

  8.     \version 2020-09-30, V2.1.0, firmware for GD32F30x
    9. 

  9. */
    10. 

  10. 

  11. /*
    12. 

  12.     Copyright (c) 2023, GigaDevice Semiconductor Inc.
    13. 

  13. 

  14.     Redistribution and use in source and binary forms, with or without modification, 
    15. 

  15. are permitted provided that the following conditions are met:
    16. 

  16. 

  17.     1. Redistributions of source code must retain the above copyright notice, this 
    18. 

  18.        list of conditions and the following disclaimer.
    19. 

  19.     2. Redistributions in binary form must reproduce the above copyright notice, 
    20. 

  20.        this list of conditions and the following disclaimer in the documentation 
    21. 

  21.        and/or other materials provided with the distribution.
    22. 

  22.     3. Neither the name of the copyright holder nor the names of its contributors 
    23. 

  23.        may be used to endorse or promote products derived from this software without 
    24. 

  24.        specific prior written permission.
    25. 

  25. 

  26.     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
    27. 

  27. AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
    28. 

  28. WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
    29. 

  29. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
    30. 

  30. INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
    31. 

  31. NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
    32. 

  32. PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
    33. 

  33. WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
    34. 

  34. ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
    35. 

  35. OF SUCH DAMAGE.
    36. 

  36. */
    37. 

  37. 

  38.   This example is based on the GD32F307C-EVAL-V1.1 board, it shows how to use DAC concurrent
    39. 

  39. mode software trigger to generate LFSR noise wave with different configurations.
    40. 

  40. 

  41.   DAC is configured as following:
    42. 

  42.   - Data 12-bit right alligned.
    43. 

  43.   - Software trigger DAC0_OUT0 and DAC0_OUT1.
    44. 

  44.   - DAC0_OUT0/DAC0_OUT1 is configured as PA4/PA5.
    45. 

  45.   - LFSR mode, with 0-9/0-10 bit masking and offset value 0x7f0.
    46. 

  46. 

  47.   After system start-up, the LFSR noise wave can be observed through the scilloscope.
    48.