MG32F157 Standard Peripherals Firmware Library
SPI1 SPI_SimplexInterrupt example
  ****************** (C) COPYRIGHT 2023 Megawin Technology *******************
  * @file    SPI/SPI_SimplexInterrupt/readme.txt 
  * @author  Megawin Application Team
  * @version V0.0.4
  * @date    16-June-2023
  * @brief   Description of the SPI1 SimplexInterrupt 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
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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Example Description

This example describes how to use the SPi firmware library to operate the SPI peripheral, in the SPI single-line simplex mode to achieve the SPI host and SPI slave communication, while enabling the SPI host send interrupt and the SPI slave receive interrupt.

In this example, Main clock is from PLL clock and it is configured at 96MHz. The PLL clock is based on 8MHz HSE. APB1 clock is the 2 frequency division of the Main clock, APB2 clock is from Main clock.

This example does the following:

  • Initialize and configure the SPI1 communication rate to be 12 Mbit/s. As the SPI host, single-line only transmit mode is enabled. Enable the SPI transmit buffer to be an air break.
  • Initializes and configures the communication rate of SPI2 as 12 Mbit/s, acts as SPI slave, receives only in single-line mode, and enables the SPI receive buffer to be non-air disconnection.
  • Send data in an air break in the send buffer of SPI1 and receive data in a non-air break in the receive buffer of SPI2.
  • Use USART1 to print the sent and received data after the communication, and compare whether the sent and received data are consistent.
Directory contents
  • SPI/SPI_SimplexInterrupt/SPI_SimplexInterrupt.uvprojx MDK5 project file
  • SPI/SPI_SimplexInterrupt/SPI_SimplexInterrupt.uvoptx MDK5 project options file
  • SPI/SPI_SimplexInterrupt/JLinkSettings.ini Jlink settings file
  • SPI/SPI_SimplexInterrupt/main.c Main program
Hardware and Software environment
  • Hardware environment
    • HSE crystal is 8MHz
  • Chip pin connection is as follows:
    • PA4 pin is connected to PB12
    • PA5 Pin is connected to PB13
    • PA7 pin is connected to PB14
How to use it ?

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

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

    © COPYRIGHT 2023 Megawin Technology