官方SDK提供的demo是C++的示例

x86_64的linux

  • 使用官方c++示例

    • 修改demo/linux下makefile名字

    • 执行make clean

    • 执行make

  • 使用c自己写

    • 删除无用文件，libusb-1.0.so 才是真正使用的，libusb-1.0.so.0,libusb-1.0.2.0用不到也能删

      下载

    • 修改include/HCUsbSDK.h

      #if defined _WIN32 || defined _WIN64
#define USB_SDK_API  extern "C" __declspec(dllimport)
#elif defined __linux__ || defined __APPLE__
#define USB_SDK_API  extern "C"
#endif

      改成

      #if defined _WIN32 || defined _WIN64
#define USB_SDK_API  extern "C" __declspec(dllimport)
#elif defined __linux__ || defined __APPLE__
  #ifdef __cplusplus
    #define USB_SDK_API  extern "C"
  #else
    #define USB_SDK_API //extern "C"  是c++的语法，c不支持
  #endif
#endif

    • 编写makefile

      CC = gcc
CFLAGS = -g -O0 -Wall
INCLUDE = -I. -I../../include
LDLIBS = -lHCUSBSDK -lpthread
LIBPATH = ../../library/linux64 

SRCS = $(wildcard *.c)
OBJS = $(SRCS:.c=.o)
TARGET = usb_demo

$(TARGET): $(OBJS)
	$(CC) $(CFLAGS) $^ -o $@ -L$(LIBPATH) $(LDLIBS) -Wl,-rpath=$(LIBPATH)
	cp $@ $(LIBPATH)

%.o: %.c
	$(CC) $(CFLAGS) $(INCLUDE) -c $< -o $@

all: $(TARGET)
	@echo "Build $(TARGET) Finished"

clean:
	rm -f $(OBJS) $(TARGET) $(LIBPATH)/$(TARGET)

    • 编写测试

      #include <stdio.h>
#include "../../include/HCUsbSDK.h"
int main(void)
{
    USB_Init();
    
    printf("SDK_version=%d\n",USB_GetSDKVersion());
    printf("DeviceCount=%d\n", USB_GetDeviceCount());
    return 0;
}

    • 注意点

      1. 编写的应用程序必须在.so依赖同级目录。

        library/linux64/
├── usb_demo              ← 程序
├── libHCUSBSDK.so        ← SDK
├── libhpr.so
├── libusb-1.0.so         ← 被  libHCUSBSDK.so dlopen
└── libuvc.so             ← 被  libHCUSBSDK.so dlopen

  • 其他示例

    前往其他地方