harmony 鸿蒙USB Usage Example
USB Usage Example
#include <cstdio>
#include <iostream>
#include <map>
#include <mutex>
#include <sstream>
#include <sys/time.h>
#include "if_system_ability_manager.h"
#include "ipc_skeleton.h"
#include "iremote_object.h"
#include "iservice_registry.h"
#include "iusb_srv.h"
#include "string_ex.h"
#include "system_ability_definition.h"
#include "usb_common.h"
#include "usb_device.h"
#include "usb_errors.h"
#include "usb_request.h"
#include "usb_server_proxy.h"
#include "usb_srv_client.h"
const int32_t REQUESTYPE = ((1 << 7)|(0 << 5)|(0 & 0x1f));
const int32_t REQUESTCMD = 6;
const int32_t VALUE = (2 << 8) + 0;
const int32_t TIMEOUT = 5000;
const int32_t ITFCLASS = 10;
const int32_t PRAMATYPE = 2;
const int32_t BUFFERLENGTH = 21;
void GetType(OHOS::USB::USBEndpoint &tep, OHOS::USB::USBEndpoint &outEp, bool &outEpFlg)
{
if ((tep.GetType() == PRAMATYPE)) {
if (tep.GetDirection() == 0) {
outEp = tep;
outEpFlg = true;
}
}
}
bool SelectEndpoint(OHOS::USB::USBConfig config,
std::vector<OHOS::USB::UsbInterface> interfaces,
OHOS::USB::UsbInterface &interface,
OHOS::USB::USBEndpoint &outEp,
bool &outEpFlg)
{
for (int32_t i = 0; i < config.GetInterfaceCount(); ++i) {
OHOS::USB::UsbInterface tif = interfaces[i];
std::vector<OHOS::USB::USBEndpoint> mEndpoints = tif.GetEndpoints();
for (int32_t j = 0; j < tif.GetEndpointCount(); ++j) {
OHOS::USB::USBEndpoint tep = mEndpoints[j];
if ((tif.GetClass() == ITFCLASS) && (tif.GetSubClass() == 0) && (tif.GetProtocol() == PRAMATYPE)) {
GetType(tep, outEp, outEpFlg);
}
}
if (outEpFlg) {
interface = interfaces[i];
return true;
}
std::cout << std::endl;
}
return false;
}
int OpenDeviceTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::UsbDevice device, OHOS::USB::USBDevicePipe &pip)
{
int ret = Instran.RequestRight(device.GetName());
std::cout << "device RequestRight ret = " << ret << std::endl;
if (0 != ret) {
std::cout << "device RequestRight failed = " << ret << std::endl;
}
ret = Instran.OpenDevice(device, pip);
return ret;
}
int CtrTransferTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::USBDevicePipe &pip)
{
std::cout << "usb_device_test : << Control Transfer >> " << std::endl;
std::vector<uint8_t> vData;
const OHOS::USB::UsbCtrlTransfer tctrl = {REQUESTYPE, REQUESTCMD, VALUE, 0, TIMEOUT};
int ret = Instran.ControlTransfer(pip, tctrl, vData);
if (ret != 0) {
std::cout << "control message read failed width ret = " << ret << std::endl;
} else {
}
std::cout << "control message read success" << std::endl;
return ret;
}
int ClaimTest(OHOS::USB::UsbSrvClient &Instran,
OHOS::USB::USBDevicePipe &pip,
OHOS::USB::UsbInterface &interface,
bool interfaceFlg)
{
if (interfaceFlg) {
std::cout << "ClaimInterface InterfaceInfo:" << interface.ToString() << std::endl;
int ret = Instran.ClaimInterface(pip, interface, true);
if (ret != 0) {
std::cout << "ClaimInterface failed width ret = " << ret << std::endl;
} else {
std::cout << "ClaimInterface success" << std::endl;
}
}
return 0;
}
int BulkTransferTest(OHOS::USB::UsbSrvClient &Instran,
OHOS::USB::USBDevicePipe &pip,
OHOS::USB::USBEndpoint &outEp,
bool interfaceFlg,
bool outEpFlg)
{
if (interfaceFlg) {
std::cout << "usb_device_test : << Bulk transfer start >> " << std::endl;
if (outEpFlg) {
uint8_t buffer[50] = "hello world 123456789";
std::vector<uint8_t> vData(buffer, buffer + BUFFERLENGTH);
int ret = Instran.BulkTransfer(pip, outEp, vData, TIMEOUT);
if (ret != 0) {
std::cout << "Bulk transfer write failed width ret = " << ret << std::endl;
} else {
std::cout << "Bulk transfer write success" << std::endl;
}
return ret;
}
}
return 0;
}
int main(int argc, char **argv)
{
std::cout << "usb_device_test " << std::endl;
static OHOS::USB::UsbSrvClient &Instran = OHOS::USB::UsbSrvClient::GetInstance();
// GetDevices
std::vector<OHOS::USB::UsbDevice> deviceList;
int32_t ret = Instran.GetDevices(deviceList);
if (ret != 0) {
return OHOS::USB::UEC_SERVICE_INVALID_VALUE;
}
if (deviceList.empty()) {
return OHOS::USB::UEC_SERVICE_INVALID_VALUE;
}
OHOS::USB::UsbDevice device = deviceList[0];
std::vector<OHOS::USB::USBConfig> configs = device.GetConfigs();
OHOS::USB::USBConfig config = configs[0];
std::vector<OHOS::USB::UsbInterface> interfaces = config.GetInterfaces();
OHOS::USB::UsbInterface interface;
OHOS::USB::USBEndpoint outEp;
bool interfaceFlg = false;
bool outEpFlg = false;
interfaceFlg = SelectEndpoint(config, interfaces, interface, outEp, outEpFlg);
// OpenDevice
std::cout << "usb_device_test : << OpenDevice >> test begin -> " << std::endl;
OHOS::USB::USBDevicePipe pip;
ret = OpenDeviceTest(Instran, device, pip);
if (ret != 0) {
return OHOS::USB::UEC_SERVICE_INVALID_VALUE;
}
// ControlTransfer
CtrTransferTest(Instran, pip);
// ClaimInterface
ClaimTest(Instran, pip, interface, interfaceFlg);
// BulkTransferWrite
BulkTransferTest(Instran, pip, outEp, interfaceFlg, outEpFlg);
// CloseDevice
std::cout << "usb_device_test : << Close Device >> " << std::endl;
ret = Instran.Close(pip);
if (ret == 0) {
std::cout << "Close device failed width ret = " << ret << std::endl;
return OHOS::USB::UEC_SERVICE_INVALID_VALUE;
} else {
std::cout << "Close Device success" << std::endl;
}
return 0;
}
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