1、功能说明

	1、SPI 从模式全双工 DMA 发送和单线接收数据

2、使用环境

    软件开发环境： KEIL MDK-ARM V5.34.0.0
	硬件环境：    基于N32G032R8L7_STB V1.0开发

3、使用说明
	
	/* 描述相关模块配置方法；例如:时钟，I/O等 */
        SystemClock：48MHz
        GPIO：（主模式 DEMO 板）SPI1: SCK--PA5、 MISO--PA6、MOSI--PA7,
	          （从模式 DEMO 板）SPI1: SCK--PA5、 MISO--PA6、MOSI--PA7,
	
	日志打印：从模式 DEMO 板 PA9(TX)，波特率：115200
	

	/* 描述Demo的测试步骤和现象 */
        1.编译后下载程序复位运行；
	2.接好串口打印工具，上电，查看打印测试成功


4、注意事项
	需要两块 demo 板配合，一块板子烧录主模式程序，一块板子烧录从模式程序，两块板子需一起上电，连接两块板子的 VCC 和 GND
	
	
1. Functional Description:
    1. Perform SPI data transmission and reception in full-duplex mode in SPI slave mode using DMA for transmission and single-line reception.
	
2. Usage Environment:

	Software Development Environment: KEIL MDK-ARM V5.34.0.0
	Hardware Environment: Developed based on the evaluation board N32G032R8L7-STB V1.0

3. Usage Instructions:

	/* Describe the configuration methods for relevant modules, e.g., clock, I/O, etc */
	SystemClock: 48MHz
	GPIO:
		(Master Mode Demo Board) SPI1: SCK--PA5, MISO--PA6, MOSI--PA7
		(Slave Mode Demo Board)  SPI1: SCK--PA5, MISO--PA6, MOSI--PA7
	Logging: Connect to the UART TX pin of the Master Mode Demo Board (PA9) with a baud rate of 115200.

	/* Describe the testing steps and observed behavior of the demo */
	1. After compiling, download the program and reset the board.
	2. Connect a UART terminal, power on, and check that the print test is successful.

4. Notes:
	Two demo boards are required for this setup: one board is programmed as the master mode and the other as the slave mode. 
	Both boards need to be powered on simultaneously, and their VCC and GND should be connected.
	
	