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- associate descriptors with device

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- update and get descriptors

git-svn-id: https://svn.code.sf.net/p/libusbjava/code/trunk@198 94ad28fe-ef68-46b1-9651-e7ae4fcf1c4c
This commit is contained in:
schlaepfer
2006-11-20 08:52:00 +00:00
parent 77b6d90492
commit c4337f3793
2 changed files with 146 additions and 72 deletions
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196
java/src/ch/ntb/usb/Device.java
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@@ -26,9 +26,14 @@ public class Device {
private boolean resetOnFirstOpen, resetDone;
private int resetTimeout = 1000;
private int resetTimeout = 2000;
private Usb_Device dev;
private boolean initUSBDone;
protected Device(short idVendor, short idProduct) {
initUSBDone = false;
resetOnFirstOpen = false;
resetDone = false;
maxPacketSize = -1;
@@ -36,6 +41,111 @@ public class Device {
this.idProduct = idProduct;
}
private void initUSB() {
LibusbWin.usb_init();
initUSBDone = true;
}
private Usb_Bus initBus() throws USBException {
LibusbWin.usb_find_busses();
LibusbWin.usb_find_devices();
Usb_Bus bus = LibusbWin.usb_get_busses();
if (bus == null) {
throw new USBException("LibusbWin.usb_get_busses(): "
+ LibusbWin.usb_strerror());
}
return bus;
}
private void updateMaxPacketSize(Usb_Device device) throws USBException {
maxPacketSize = -1;
Usb_Config_Descriptor[] confDesc = device.config;
for (int i = 0; i < confDesc.length; i++) {
Usb_Interface[] int_ = confDesc[i].interface_;
for (int j = 0; j < int_.length; j++) {
Usb_Interface_Descriptor[] intDesc = int_[j].altsetting;
for (int k = 0; k < intDesc.length; k++) {
Usb_Endpoint_Descriptor[] epDesc = intDesc[k].endpoint;
for (int l = 0; l < epDesc.length; l++) {
maxPacketSize = Math.max(epDesc[l].wMaxPacketSize,
maxPacketSize);
}
}
}
}
if (maxPacketSize <= 0) {
throw new USBException(
"No USB endpoints found. Check the device configuration");
}
}
private Usb_Device initDevice() throws USBException {
Usb_Bus bus = initBus();
Usb_Device device = null;
// search for device
while (bus != null) {
device = bus.devices;
while (device != null) {
Usb_Device_Descriptor devDesc = device.descriptor;
if ((devDesc.idVendor == idVendor)
&& (devDesc.idProduct == idProduct)) {
logger.info("Device found: " + device.filename);
updateMaxPacketSize(device);
return device;
}
device = device.next;
}
bus = bus.next;
}
return null;
}
/**
* Updates the device and descriptor information from the bus.<br>
* The descriptors can be read with {@link #getDeviceDescriptor()} and
* {@link #getConfigDescriptors()}.
*
* @throws USBException
*/
public void updateDescriptors() throws USBException {
if (!initUSBDone)
initUSB();
dev = initDevice();
}
/**
* Returns the device descriptor associated with this device.<br>
* The descriptor is updated by calling {@link #updateDescriptors()} or
* {@link #open(int, int, int)}.
*
* @return the device descriptor associated with this device or
* <code>null</code>
*/
public Usb_Device_Descriptor getDeviceDescriptor() {
if (dev == null) {
return null;
}
return dev.descriptor;
}
/**
* Returns the configuration descriptors associated with this device.<br>
* The descriptors are updated by calling {@link #updateDescriptors()} or
* {@link #open(int, int, int)}.
*
* @return the configuration descriptors associated with this device or
* <code>null</code>
*/
public Usb_Config_Descriptor[] getConfigDescriptors() {
if (dev == null) {
return null;
}
return dev.config;
}
/**
* Opens the device and claims the specified configuration, interface and
* altinterface.<br>
@@ -58,65 +168,24 @@ public class Device {
this.dev_interface = interface_;
this.dev_altinterface = altinterface;
Usb_Bus bus;
if (usbDevHandle > 0) {
throw new USBException("device opened, close or reset first");
}
// open bus
LibusbWin.usb_init();
LibusbWin.usb_find_busses();
LibusbWin.usb_find_devices();
initUSB();
bus = LibusbWin.usb_get_busses();
if (bus == null) {
throw new USBException("LibusbWin.usb_get_busses(): "
+ LibusbWin.usb_strerror());
}
dev = initDevice();
maxPacketSize = -1;
// search for device
while (bus != null) {
Usb_Device dev = bus.devices;
while (dev != null) {
Usb_Device_Descriptor devDesc = dev.descriptor;
if ((devDesc.idVendor == idVendor)
&& (devDesc.idProduct == idProduct)) {
logger.info("Open device: " + dev.filename);
int res = LibusbWin.usb_open(dev);
if (res <= 0) {
throw new USBException("LibusbWin.usb_open: "
+ LibusbWin.usb_strerror());
}
usbDevHandle = res;
// get endpoint wMaxPacketSize
Usb_Config_Descriptor[] confDesc = dev.config;
for (int i = 0; i < confDesc.length; i++) {
Usb_Interface[] int_ = confDesc[i].interface_;
for (int j = 0; j < int_.length; j++) {
Usb_Interface_Descriptor[] intDesc = int_[j].altsetting;
for (int k = 0; k < intDesc.length; k++) {
Usb_Endpoint_Descriptor[] epDesc = intDesc[k].endpoint;
for (int l = 0; l < epDesc.length; l++) {
maxPacketSize = Math.max(
epDesc[l].wMaxPacketSize,
maxPacketSize);
}
}
}
}
if (maxPacketSize <= 0) {
throw new USBException(
"No USB endpoints found. Check the device configuration");
}
}
dev = dev.next;
if (dev != null) {
int res = LibusbWin.usb_open(dev);
if (res <= 0) {
throw new USBException("LibusbWin.usb_open: "
+ LibusbWin.usb_strerror());
}
bus = bus.next;
usbDevHandle = res;
}
if (usbDevHandle <= 0) {
if (dev == null || usbDevHandle <= 0) {
throw new USBException("USB device with idVendor 0x"
+ Integer.toHexString(idVendor & 0xFFFF)
+ " and idProduct 0x"
@@ -492,8 +561,8 @@ public class Device {
}
/**
* Returns the alternative interface. This value is only valid after opening
* the device.<br>
* Returns the alternative interface.<br>
* This value is only valid after opening the device.
*
* @return the alternative interface. This value is only valid after opening
* the device.
@@ -503,8 +572,8 @@ public class Device {
}
/**
* Returns the current configuration used. This value is only valid after
* opening the device.<br>
* Returns the current configuration used.<br>
* This value is only valid after opening the device.
*
* @return the current configuration used. This value is only valid after
* opening the device.
@@ -514,8 +583,8 @@ public class Device {
}
/**
* Returns the current interface. This value is only valid after opening the
* device.<br>
* Returns the current interface.<br>
* This value is only valid after opening the device.
*
* @return the current interface. This value is only valid after opening the
* device.
@@ -524,17 +593,6 @@ public class Device {
return dev_interface;
}
/**
* Returns the current device handle. This value is only valid after opening
* the device.<br>
*
* @return the current device handle. This value is only valid after opening
* the device.
*/
public int getUsbDevHandle() {
return usbDevHandle;
}
/**
* Returns the maximum packet size in bytes which is allowed to be
* transmitted at once.<br>