悟空派全志H3开发板基础外设功能测试

//1、系统默认关闭了SPI,打开该文件：
vi /boot/orangepiEnv.txt

//2、输入以下内容：
overlays=spi-spidev
param_spidev_spi_bus=1 #修改为开发板所支持的对应的spi 总线号

//3、保存后重启
reboot

root@orangepizerolts:~# ls
SPI_test.zip
root@orangepizerolts:~# unzip SPI_test.zip
Archive:  SPI_test.zip
  inflating: SPI_test/Makefile
  inflating: SPI_test/spi_main.cpp
  inflating: SPI_test/SpiDevice.cpp
  inflating: SPI_test/SpiDevice.h
root@orangepizerolts:~# ls
SPI_test  SPI_test.zip
root@orangepizerolts:~# cd SPI_test/
root@orangepizerolts:~/SPI_test# ls Makefile SpiDevice.cpp SpiDevice.h spi_main.cpp root@orangepizerolts:~/SPI_test# make make: Warning: File 'Makefile' has modification time 27539 s in the future g++ -Wall -std=c++11 -c spi_main.cpp spi_main.cpp: In function ‘int main()’: spi_main.cpp:22:9: warning: unused variable ‘num’ [-Wunused-variable] int num =10;
         ^~~
g++ -Wall -std=c++11 -c SpiDevice.cpp
g++ -Wall -std=c++11 -o spi_test spi_main.o SpiDevice.o
make: warning:  Clock skew detected.  Your build may be incomplete.
root@orangepizerolts:~/SPI_test# ls
Makefile  SpiDevice.cpp  SpiDevice.h  SpiDevice.o  spi_main.cpp  spi_main.o  spi_test
root@orangepizerolts:~/SPI_test# ./spi_test
Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0x0 0x0 0x0

Received data: 0x0 0x0 0x0

Received data: 0x0 0x0 0x0

Received data: 0x0 0x0 0x0

Received data: 0x0 0x0 0x0

Received data: 0x0 0x0 0x0

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

Received data: 0xaa 0xbb 0xcc

^C
root@orangepizerolts:~/SPI_test#

//1、系统默认关闭了uart1，uart2,打开该文件：
vi /boot/orangepiEnv.txt

//2、输入以下内容：
overlays=uart1 uart2

//3、保存后重启
reboot