readme.txt 2.3 KB

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  1. /*!
  2. \file main.c
  3. \brief description of transmit/receive data using DMA interrupt
  4. \version 2017-02-10, V1.0.0, firmware for GD32F30x
  5. \version 2018-10-10, V1.1.0, firmware for GD32F30x
  6. \version 2018-12-25, V2.0.0, firmware for GD32F30x
  7. \version 2020-09-30, V2.1.0, firmware for GD32F30x
  8. */
  9. /*
  10. Copyright (c) 2020, GigaDevice Semiconductor Inc.
  11. Redistribution and use in source and binary forms, with or without modification,
  12. are permitted provided that the following conditions are met:
  13. 1. Redistributions of source code must retain the above copyright notice, this
  14. list of conditions and the following disclaimer.
  15. 2. Redistributions in binary form must reproduce the above copyright notice,
  16. this list of conditions and the following disclaimer in the documentation
  17. and/or other materials provided with the distribution.
  18. 3. Neither the name of the copyright holder nor the names of its contributors
  19. may be used to endorse or promote products derived from this software without
  20. specific prior written permission.
  21. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22. AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  23. WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  25. INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26. NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27. PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  28. WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29. ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  30. OF SUCH DAMAGE.
  31. */
  32. This demo is based on the GD32307C-EVAL-V1.1 board, it provides a description
  33. of how to use DMA channel3 to transmit data from RAM memory to USART data
  34. register and how to use DMA channel4 to receive data from USART data register
  35. to RAM memory.
  36. Firstly, the USART sends the strings to the hyperterminal and then waiting for
  37. receiving max 10 bytes data from the hyperterminal. If the number of data you enter
  38. equal with or more than 10 bytes, USART will send 10 bytes to the hyperterminal.