-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathusb-control-endpoint.cpp
213 lines (163 loc) · 8.1 KB
/
usb-control-endpoint.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
namespace usbd {
/**
* @brief USB control endpoint implementation class.
*
* This class does not need to be subclassed. It may be used as is as member of
* UsbDevice subclass.
*
* Implements standard device requests. And forwards vendor specific requests to
* device, interfaces and endpoints.
*
*/
class UsbControlEndpoint : public UsbEndpoint {
int addressToSet;
public:
unsigned char rxBuffer[64];
unsigned char txBuffer[64];
void init() {
transferType = CONTROL;
rxBufferPtr = rxBuffer;
rxBufferSize = sizeof(rxBuffer);
txBufferPtr = txBuffer;
txBufferSize = sizeof(txBuffer);
UsbEndpoint::init();
}
void txComplete() {
if (addressToSet) {
device->setAddress(addressToSet);
addressToSet = 0;
}
}
void setup(SetupData *setupData) {
if (setupData->bmRequestType.recipient == DEVICE) {
if (setupData->bmRequestType.type == STANDARD) {
if (setupData->bRequest == STD_REQUEST_GET_DESCRIPTOR) {
int descriptorType = setupData->wValue >> 8;
int descriptorIndex = setupData->wValue & 0xFF;
if (descriptorType == DESCRIPTOR_TYPE_DEVICE) {
DeviceDescriptor *deviceDesriptor = (DeviceDescriptor *)txBufferPtr;
zeromem(deviceDesriptor, sizeof(DeviceDescriptor));
deviceDesriptor->bLength = sizeof(DeviceDescriptor);
deviceDesriptor->bDescriptorType = DESCRIPTOR_TYPE_DEVICE;
deviceDesriptor->bcdUSB = 0x200;
deviceDesriptor->bMaxPacketSize0 = rxPacketSize;
deviceDesriptor->iManufacturer = StringDescriptorID::MANUFACTURER;
deviceDesriptor->iProduct = StringDescriptorID::PRODUCT;
deviceDesriptor->iSerialNumber = StringDescriptorID::SERIAL;
deviceDesriptor->bNumConfigurations = 1;
device->checkDescriptor(deviceDesriptor);
startTx(setupData->wLength < sizeof(DeviceDescriptor) ? setupData->wLength : sizeof(DeviceDescriptor));
} else if (descriptorType == DESCRIPTOR_TYPE_CONFIGURATION) {
int totalLength = 0;
ConfigurationDescriptor *configurationDescriptor = (ConfigurationDescriptor *)(txBuffer + totalLength);
zeromem(configurationDescriptor, sizeof(ConfigurationDescriptor));
configurationDescriptor->bLength = sizeof(ConfigurationDescriptor);
configurationDescriptor->bDescriptorType = DESCRIPTOR_TYPE_CONFIGURATION;
configurationDescriptor->bConfigurationValue = 1;
configurationDescriptor->bmAttributes.reservedSetTo1 = 1;
configurationDescriptor->bMaxPower = 50;
totalLength += sizeof(ConfigurationDescriptor);
for (int i = 0; UsbInterface *interface = device->getInterface(i); i++) {
configurationDescriptor->bNumInterfaces++;
InterfaceDescriptor *interfaceDescriptor = (InterfaceDescriptor *)(txBuffer + totalLength);
zeromem(interfaceDescriptor, sizeof(InterfaceDescriptor));
interfaceDescriptor->bLength = sizeof(InterfaceDescriptor);
interfaceDescriptor->bDescriptorType = DESCRIPTOR_TYPE_INTERFACE;
interfaceDescriptor->bInterfaceNumber = i;
interfaceDescriptor->bInterfaceClass = 0xFF;
interfaceDescriptor->iInterface = StringDescriptorID::INTERFACE_BASE + i;
interface->checkDescriptor(interfaceDescriptor);
totalLength += sizeof(InterfaceDescriptor);
int classDescriptorLength = interface->getClassDescriptorLength();
if (classDescriptorLength) {
unsigned char *classDescriptor = txBuffer + totalLength;
zeromem(classDescriptor, classDescriptorLength);
interface->checkClassDescriptor(classDescriptor);
totalLength += classDescriptorLength;
}
for (int e = 0; UsbEndpoint *endpoint = interface->getEndpoint(e); e++) {
for (int direction = 0; direction <= 1; direction++) {
int packetSize = direction ? endpoint->txPacketSize : endpoint->rxPacketSize;
if (packetSize) {
interfaceDescriptor->bNumEndpoints++;
EndpointDescriptor *endpointDescriptor = (EndpointDescriptor *)(txBuffer + totalLength);
zeromem(endpointDescriptor, sizeof(EndpointDescriptor));
endpointDescriptor->bLength = sizeof(EndpointDescriptor);
endpointDescriptor->bDescriptorType = DESCRIPTOR_TYPE_ENDPOINT;
endpointDescriptor->bEndpointAddress.direction = direction;
endpointDescriptor->bEndpointAddress.index = endpoint->index;
endpointDescriptor->bmAttributes.transferType = endpoint->transferType;
endpointDescriptor->bmAttributes.synchronizationType = NO_SYNCHRONIZATION;
endpointDescriptor->bmAttributes.usageType = DATA;
endpointDescriptor->wMaxPacketSize = packetSize;
endpointDescriptor->bInterval = endpoint->transferType == ISOCHRONOUS ? 1 : 10;
endpoint->checkDescriptor(endpointDescriptor);
totalLength += sizeof(EndpointDescriptor);
}
}
}
}
configurationDescriptor->wTotalLength = totalLength;
startTx(setupData->wLength < totalLength ? setupData->wLength : totalLength);
} else if (descriptorType == DESCRIPTOR_TYPE_STRING) {
StringDescriptor *stringDescriptor = (StringDescriptor *)txBuffer;
stringDescriptor->bDescriptorType = DESCRIPTOR_TYPE_STRING;
stringDescriptor->bLength = 2;
if (descriptorIndex == 0) {
stringDescriptor->unicodeData[0] = 0x0409;
stringDescriptor->bLength += 2;
} else {
const char *str =
descriptorIndex == StringDescriptorID::MANUFACTURER
? device->getManufacturer()
: descriptorIndex == StringDescriptorID::PRODUCT
? device->getProduct()
: descriptorIndex == StringDescriptorID::SERIAL
? device->getSerial()
: descriptorIndex >= StringDescriptorID::INTERFACE_BASE &&
device->getInterface(descriptorIndex - StringDescriptorID::INTERFACE_BASE)
? device->getInterface(descriptorIndex - StringDescriptorID::INTERFACE_BASE)
->getLabel()
: "";
if (!str) {
str = "";
}
for (int c = 0; str[c]; c++) {
stringDescriptor->unicodeData[c] = str[c];
stringDescriptor->bLength += 2;
}
}
startTx(setupData->wLength < stringDescriptor->bLength ? setupData->wLength : stringDescriptor->bLength);
} else {
startTx(0);
}
} else if (setupData->bRequest == STD_REQUEST_SET_ADDRESS) {
addressToSet = setupData->wValue;
startTx(0);
} else if (setupData->bRequest == STD_REQUEST_GET_CONFIGURATION) {
txBuffer[0] = 1;
startTx(1);
} else if (setupData->bRequest == STD_REQUEST_SET_CONFIGURATION) {
startTx(0);
} else if (setupData->bRequest == STD_REQUEST_GET_STATUS) {
txBuffer[0] = 0;
txBuffer[1] = 0;
startTx(2);
}
} else {
device->setup(setupData);
}
} else if (setupData->bmRequestType.recipient == INTERFACE) {
UsbInterface *interface = device->getInterface(setupData->wIndex);
if (interface) {
interface->setup(setupData);
}
} else if (setupData->bmRequestType.recipient == ENDPOINT) {
UsbEndpoint *endpoint = device->endpoints[setupData->wIndex & 0x0F];
if (endpoint && endpoint != this) {
endpoint->setup(setupData);
}
}
}
};
} // namespace usbd