MG32F10x Standard Peripherals Firmware Library
DMAC_UartToMemory_MultiBlock example
  *************** (C) COPYRIGHT 2020 - 2023 megawin Technology ***************
  * @file    DMAC/DMAC_UartToMemory_MultiBlock/readme.txt 
  * @author  megawin Application Team
  * @version V0.1.10
  * @date    05-January-2023
  * @brief   Description of the DMAC DMAC_UartToMemory_MultiBlock example.
  ******************************************************************************
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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  * TIME. AS A RESULT, MEGAWIN SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
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  * THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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Example Description

This example describes how to use DMAC to continuously transfer data received by UART to Memory.

In this example, Main clock is from PLL clock and it is configured at 96MHz. The PLL clock is based on 8MHz HSE. APB1 and APB2 clock is from Main clock.

In this example, UART2->RBR is used as the source of DMA transfer, and memDst is used as the target of DMA transfer. DMAC2 Channel 0 enables the automatic target reload function. Whenever a Block transfer is completed, the target address will be reloaded, so that the transfer from UART to Memory is continuous. When this example runs, it will print out relevant information through UART1, and enter any character to start DMA transmission. Then every time the PC sends 40 characters to UART2, it will print out the string received from UART2 from UART1.

Directory contents
  • DMAC/DMAC_UartToMemory_MultiBlock/DMAC_UartToMemory_MultiBlock.uvprojx MDK5 project file
  • DMAC/DMAC_UartToMemory_MultiBlock/DMAC_UartToMemory_MultiBlock.uvoptx MDK5 project options file
  • DMAC/DMAC_UartToMemory_MultiBlock/JLinkSettings.ini Jlink settings file
  • DMAC/DMAC_UartToMemory_MultiBlock/main.c Main program
Hardware and Software environment
  • Hardware environment
    • HSE crystal is 8MHz
    • UART1 (PA9, PA10) is connected to PC serial port
    • UART2 RX (PA3) is connected to PC serial port
How to use it ?

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

  • Open DMAC_UartToMemory_MultiBlock.uvprojx from this example folder by Keil MDK5
  • Rebuild all files and load your image into target memory
  • Run the example

    © COPYRIGHT 2020 - 2023 megawin Technology