一、前言
最近需要做Windows平台 + Qt MinGW编译器做上位机与USB通信，USB芯片使用Cypress芯片。试了libusb，只能在Linux平台下使用，Windows平台用不了。所以只能使用Cypress提供的官方库CyAPI，但是Cypress官网只提供了vs版本的源码编译，在Qt下使用需要重新编译，苦于没有找到现成的资源只能自己编译，搞了一天，不过真心不难，只是没有注意细节。在此记录一下编译过程，也分享给需要的小伙伴。
不想自己编译的同学可以直接跳到下载地址：
静态库工程下载地址
二、 准备
需要准备好CyAPI源码，我是在官网下载的
官网下载地址
到这个链接下找到以下文件下载即可。
官网下载需要注册登录，觉得麻烦的小伙伴可以到这个地址下载（我自己上传的，也是想赚点积分。。）：
CyAPI源码下载地址
三、 编译
-
使用Qt Creator建立一个新工程，选择C++库，我选择了静态库，动态库应该也可以，但是我没试，有兴趣的同学可以试一下。
-
建好工程以后直接把下载好的源码导入到工程中来，然后把不需要的文件移除掉，以下是我建好的工程目录：
-
然后在pro文件中加入以下内容：
# 引入包含目录
INCLUDEPATH += $$PWD/inc
#添加依赖库
LIBS+=-L$$PWD -lsetupapi
#配置文件输出路径
greaterThan(QT_MAJOR_VERSION,4){
TARGET_ARCH=$${QT_ARCH}
}else{
TARGET_ARCH=$${QMAKE_HOST.arch}
}
contains(TARGET_ARCH, x86_64){
CONFIG(debug,debug|release){
MOC_DIR = build/x64/tmp_debug/moc
RCC_DIR = build/x64/tmp_debug/rcc
OBJECTS_DIR = build/x64/tmp_debug/obj
DESTDIR = build/x64/bin/debug/
}else{
MOC_DIR = build/x64/tmp_release/moc
RCC_DIR = build/x64/tmp_release/rcc
OBJECTS_DIR = build/x64/tmp_release/obj
DESTDIR = build/x64/bin/release/
}
}else{
CONFIG(debug,debug|release){
MOC_DIR = build/x86/tmp_debug/moc
RCC_DIR = build/x86/tmp_debug/rcc
OBJECTS_DIR = build/x86/tmp_debug/obj
DESTDIR = build/x86/bin/debug/
}else{
MOC_DIR = build/x86/tmp_release/moc
RCC_DIR = build/x86/tmp_release/rcc
OBJECTS_DIR = build/x86/tmp_release/obj
DESTDIR = build/x86/bin/release/
}
}
- 在Qt安装目录下找到libsetupapi.a库，拷贝到工程目录。我的路径在以下位置。
编译库的时候我只用了64位的setupapi库，实际测试程序时才需要根据实际情况替换32位或者64位的setupapi库。
// 32位
D:\Qt\Qt5.12.10\Tools\mingw730_32\i686-w64-mingw32\lib\libsetupapi.a
// 64位
D:\Qt\Qt5.12.10\Tools\mingw730_64\x86_64-w64-mingw32\lib\libsetupapi.a
- 以上几步完成后就可以开始编译了。
5.1 头文件中会显示很多错误，类似下图，不用理会，不会影响编译结果。
cpp文件中也会报错，以下错误不用理会
5.2 需要修改的地方
MessageBox(NULL,"Please correct firmware descriptor table","Wrong Device Configuration",NULL);
改为：
MessageBoxA(NULL,"Please correct firmware descriptor table","Wrong Device Configuration",NULL);
就是把MessageBox改成MessageBoxA，因为默认调用MessageBoxW，参数不匹配，所以会报错。报错的地方改一下就可以。这个错误应该是有两处，都在Open函数中。
5.3 然后找到以下函数整体替换，其实也是CHAR和WCHAR参数不匹配的问题：
bool CCyUSBDevice::CreateHandle(UCHAR dev){
Devices = DeviceCount();
if (!Devices) return false;
if (dev > (Devices - 1)) return false; //dev = Devices-1;
SP_DEVINFO_DATA devInfoData;
SP_DEVICE_INTERFACE_DATA devInterfaceData;
PSP_INTERFACE_DEVICE_DETAIL_DATA_A functionClassDeviceData; // 此处修改
SP_INTERFACE_DEVICE_DETAIL_DATA_A tmpInterfaceDeviceDetailData; // 此处修改
ULONG requiredLength = 0;
int deviceNumber = dev;
HANDLE hFile;
//Open a handle to the plug and play dev node.
//SetupDiGetClassDevs() returns a device information set that contains info on all
// installed devices of a specified class which are present.
HDEVINFO hwDeviceInfo = SetupDiGetClassDevsA ( (LPGUID) &DrvGuid,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE); // 此处修改
if (hwDeviceInfo != INVALID_HANDLE_VALUE) {
//SetupDiEnumDeviceInterfaces() returns information about device interfaces
// exposed by one or more devices. Each call returns information about one interface.
//The routine can be called repeatedly to get information about several interfaces
// exposed by one or more devices.
devInterfaceData.cbSize = sizeof(devInterfaceData);
if (SetupDiEnumDeviceInterfaces ( hwDeviceInfo, 0, (LPGUID) &DrvGuid,
deviceNumber, &devInterfaceData)) {
//Allocate a function class device data structure to receive the goods about this
// particular device.
SetupDiGetInterfaceDeviceDetailA ( hwDeviceInfo, &devInterfaceData, NULL, 0,
&requiredLength, NULL); // 此处修改
ULONG predictedLength = requiredLength;
functionClassDeviceData = (PSP_INTERFACE_DEVICE_DETAIL_DATA_A) malloc (predictedLength); // 此处修改
functionClassDeviceData->cbSize = sizeof (SP_INTERFACE_DEVICE_DETAIL_DATA_A);
devInfoData.cbSize = sizeof(devInfoData); // 此处修改
//Retrieve the information from Plug and Play */
// 此处修改
if (SetupDiGetInterfaceDeviceDetailA (hwDeviceInfo,
&devInterfaceData,
functionClassDeviceData,
predictedLength,
&requiredLength,
&devInfoData)) {
/* NOTE : x64 packing issue ,requiredLength return 5byte size of the (SP_INTERFACE_DEVICE_DETAIL_DATA) and functionClassDeviceData needed sizeof functionClassDeviceData 8byte */
int pathLen = requiredLength - (sizeof (tmpInterfaceDeviceDetailData.cbSize)+sizeof (tmpInterfaceDeviceDetailData.DevicePath));
//int pathLen = requiredLength - functionClassDeviceData->cbSize;
memcpy (DevPath, functionClassDeviceData->DevicePath, pathLen);
DevPath[pathLen] = 0;
// 此处修改
hFile = CreateFileA (DevPath,
GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_WRITE | FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
DWORD errCode = GetLastError();
free(functionClassDeviceData);
SetupDiDestroyDeviceInfoList(hwDeviceInfo);
if (hFile == INVALID_HANDLE_VALUE)
{
LastError = GetLastError();
return false;
}
// hDevice, DevNum, USBDeviceDescriptor, and Configs are data members
hDevice = hFile;
return true;
}
}
SetupDiDestroyDeviceInfoList(hwDeviceInfo);
}
// Got here by failing at some point
hDevice = INVALID_HANDLE_VALUE;
DevNum = 0;
return false;
}
5.4 DeviceCount函数修改一行或者直接替换：
UCHAR CCyUSBDevice::DeviceCount(void){
//SP_DEVINFO_DATA devInfoData;
SP_DEVICE_INTERFACE_DATA devInterfaceData;
//Open a handle to the plug and play dev node.
//SetupDiGetClassDevs() returns a device information set that contains info on all
// installed devices of a specified class which are present.
// 此函数修改
HDEVINFO hwDeviceInfo = SetupDiGetClassDevsA ( (LPGUID) &DrvGuid,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
Devices = 0;
if (hwDeviceInfo != INVALID_HANDLE_VALUE) {
//SetupDiEnumDeviceInterfaces() returns information about device interfaces
// exposed by one or more devices. Each call returns information about one interface.
//The routine can be called repeatedly to get information about several interfaces
// exposed by one or more devices.
devInterfaceData.cbSize = sizeof(devInterfaceData);
// Count the number of devices
int i=0;
Devices = 0;
bool bDone = false;
while (!bDone) {
BOOL bRetVal = SetupDiEnumDeviceInterfaces (hwDeviceInfo, 0, (LPGUID) &DrvGuid,
i, &devInterfaceData);
if (bRetVal)
Devices++;
else {
DWORD dwLastError = GetLastError();
if (dwLastError == ERROR_NO_MORE_ITEMS) bDone = TRUE;
}
i++;
}
SetupDiDestroyDeviceInfoList(hwDeviceInfo);
}
return Devices;
}
到此就修改完毕可以成功编译了，编译完成后到配置好的路径下找到编译好的库文件就可以使用了。
四、下载
我的工程上传到此，需要的可以下载。
静态库工程下载地址