38 lines
2.1 KiB
Markdown
38 lines
2.1 KiB
Markdown
1、功能说明
|
||
1.SPI在单线模式下使用中断发送和接收数据。
|
||
2、使用环境
|
||
软件开发环境：KEIL MDK-ARM V5.34.0.0
|
||
IAR EWARM V8.50.1
|
||
硬件环境：基于N32G430C8L7-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 */
|
||
1.系统时钟：128MHz
|
||
2.GPIO：SPI1：NSS--PA4 <--> SPI2：NSS--PB12
|
||
SPI1：SCK--PA5 <--> SPI2：SCK--PB13
|
||
SPI1：MOSI--PA7 <--> SPI2：MISO--PB14
|
||
/* 描述Demo的测试步骤和现象 */
|
||
1.编译完成后，下载程序复位运行；
|
||
2. SPI1使用中断发送数据，SPI2使用中断接收数据，发送完成后，
|
||
比较发送和接收的数据，通过串口打印PASSS，失败打印ERR；
|
||
4、注意事项
|
||
如果使用“单线”模式，主机使用的是MOSI引脚，从机使用的是MISO引脚
|
||
如果CLKPOL设置为HIGH，设置SPI_SCK GPIO需要设置为上拉GPIO_PULL_UP，其他情况设置为下拉GPIO_PULL_DOWN
|
||
|
||
1. Function description
|
||
1. SPI uses interrupt to send and receive data in single mode.
|
||
2. Use environment
|
||
Software development environment: KEIL MDK-ARM V5.34.0.0
|
||
Hardware environment: Developed based on the evaluation board N32G430C8L7-STB V1.0
|
||
3. Instructions for use
|
||
/* Describe related module configuration methods; for example: clock, I/O, etc. */
|
||
1、SystemClock：128MHz
|
||
2、GPIO:SPI1: NSS--PA4 <--> SPI2: NSS--PB12
|
||
SPI1: SCK--PA5 <--> SPI2: SCK--PB13
|
||
SPI1: MOSI--PA7 <--> SPI2: MISO--PB14
|
||
/* Describe the test steps and phenomena of the Demo */
|
||
1. After compiling, download the program to reset and run;
|
||
2. SPI1 uses interrupt to send data, SPI2 uses interrupt to receive data, after the transmission is completed,
|
||
compare the sent and received data, use the serial port to print PASSS if it passes, and print ERR if it fails;
|
||
4. Matters needing attention
|
||
The "single wire" data lines are MOSI pins on the master side and MISO pins on the slave side
|
||
If CLKPOL is HIGH, set SPI_SCK GPIO to GPIO_PULL_UP, otherwise set to GPIO_PULL_DOWN |