forked from vedderb/bldc
-
Notifications
You must be signed in to change notification settings - Fork 8
/
comm_usb_serial.c
334 lines (303 loc) · 11 KB
/
comm_usb_serial.c
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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
// NOTE: this file is created from the USB_CDC testhal example
#include "ch.h"
#include "hal.h"
#include "stm32f4xx_conf.h"
/*
* Endpoints to be used for USBD2.
*/
#define USBD2_DATA_REQUEST_EP 1
#define USBD2_DATA_AVAILABLE_EP 1
#define USBD2_INTERRUPT_REQUEST_EP 2
/*
* Serial over USB Driver structure.
*/
SerialUSBDriver SDU1;
/*
* USB Device Descriptor.
*/
static const uint8_t vcom_device_descriptor_data[18] = {
USB_DESC_DEVICE (0x0110, /* bcdUSB (1.1). */
0x02, /* bDeviceClass (CDC). */
0x00, /* bDeviceSubClass. */
0x00, /* bDeviceProtocol. */
0x40, /* bMaxPacketSize. */
0x0483, /* idVendor (ST). */
0x5740, /* idProduct. */
0x0200, /* bcdDevice. */
1, /* iManufacturer. */
2, /* iProduct. */
3, /* iSerialNumber. */
1) /* bNumConfigurations. */
};
/*
* Device Descriptor wrapper.
*/
static const USBDescriptor vcom_device_descriptor = {
sizeof vcom_device_descriptor_data,
vcom_device_descriptor_data
};
/* Configuration Descriptor tree for a CDC.*/
static const uint8_t vcom_configuration_descriptor_data[67] = {
/* Configuration Descriptor.*/
USB_DESC_CONFIGURATION(67, /* wTotalLength. */
0x02, /* bNumInterfaces. */
0x01, /* bConfigurationValue. */
0, /* iConfiguration. */
0xC0, /* bmAttributes (self powered). */
50), /* bMaxPower (100mA). */
/* Interface Descriptor.*/
USB_DESC_INTERFACE (0x00, /* bInterfaceNumber. */
0x00, /* bAlternateSetting. */
0x01, /* bNumEndpoints. */
0x02, /* bInterfaceClass (Communications
Interface Class, CDC section
4.2). */
0x02, /* bInterfaceSubClass (Abstract
Control Model, CDC section 4.3). */
0x01, /* bInterfaceProtocol (AT commands,
CDC section 4.4). */
0), /* iInterface. */
/* Header Functional Descriptor (CDC section 5.2.3).*/
USB_DESC_BYTE (5), /* bLength. */
USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
USB_DESC_BYTE (0x00), /* bDescriptorSubtype (Header
Functional Descriptor. */
USB_DESC_BCD (0x0110), /* bcdCDC. */
/* Call Management Functional Descriptor. */
USB_DESC_BYTE (5), /* bFunctionLength. */
USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
USB_DESC_BYTE (0x01), /* bDescriptorSubtype (Call Management
Functional Descriptor). */
USB_DESC_BYTE (0x00), /* bmCapabilities (D0+D1). */
USB_DESC_BYTE (0x01), /* bDataInterface. */
/* ACM Functional Descriptor.*/
USB_DESC_BYTE (4), /* bFunctionLength. */
USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
USB_DESC_BYTE (0x02), /* bDescriptorSubtype (Abstract
Control Management Descriptor). */
USB_DESC_BYTE (0x02), /* bmCapabilities. */
/* Union Functional Descriptor.*/
USB_DESC_BYTE (5), /* bFunctionLength. */
USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
USB_DESC_BYTE (0x06), /* bDescriptorSubtype (Union
Functional Descriptor). */
USB_DESC_BYTE (0x00), /* bMasterInterface (Communication
Class Interface). */
USB_DESC_BYTE (0x01), /* bSlaveInterface0 (Data Class
Interface). */
/* Endpoint 2 Descriptor.*/
USB_DESC_ENDPOINT (USBD2_INTERRUPT_REQUEST_EP|0x80,
0x03, /* bmAttributes (Interrupt). */
0x0008, /* wMaxPacketSize. */
0xFF), /* bInterval. */
/* Interface Descriptor.*/
USB_DESC_INTERFACE (0x01, /* bInterfaceNumber. */
0x00, /* bAlternateSetting. */
0x02, /* bNumEndpoints. */
0x0A, /* bInterfaceClass (Data Class
Interface, CDC section 4.5). */
0x00, /* bInterfaceSubClass (CDC section
4.6). */
0x00, /* bInterfaceProtocol (CDC section
4.7). */
0x00), /* iInterface. */
/* Endpoint 3 Descriptor.*/
USB_DESC_ENDPOINT (USBD2_DATA_AVAILABLE_EP, /* bEndpointAddress.*/
0x02, /* bmAttributes (Bulk). */
0x0040, /* wMaxPacketSize. */
0x00), /* bInterval. */
/* Endpoint 1 Descriptor.*/
USB_DESC_ENDPOINT (USBD2_DATA_REQUEST_EP|0x80, /* bEndpointAddress.*/
0x02, /* bmAttributes (Bulk). */
0x0040, /* wMaxPacketSize. */
0x00) /* bInterval. */
};
/*
* Configuration Descriptor wrapper.
*/
static const USBDescriptor vcom_configuration_descriptor = {
sizeof vcom_configuration_descriptor_data,
vcom_configuration_descriptor_data
};
/*
* U.S. English language identifier.
*/
static const uint8_t vcom_string0[] = {
USB_DESC_BYTE(4), /* bLength. */
USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
USB_DESC_WORD(0x0409) /* wLANGID (U.S. English). */
};
/*
* Vendor string.
*/
static const uint8_t vcom_string1[] = {
USB_DESC_BYTE(38), /* bLength. */
USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
'S', 0, 'T', 0, 'M', 0, 'i', 0, 'c', 0, 'r', 0, 'o', 0, 'e', 0,
'l', 0, 'e', 0, 'c', 0, 't', 0, 'r', 0, 'o', 0, 'n', 0, 'i', 0,
'c', 0, 's', 0
};
/*
* Device Description string.
*/
static const uint8_t vcom_string2[] = {
USB_DESC_BYTE(56), /* bLength. */
USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
'C', 0, 'h', 0, 'i', 0, 'b', 0, 'i', 0, 'O', 0, 'S', 0, '/', 0,
'R', 0, 'T', 0, ' ', 0, 'V', 0, 'i', 0, 'r', 0, 't', 0, 'u', 0,
'a', 0, 'l', 0, ' ', 0, 'C', 0, 'O', 0, 'M', 0, ' ', 0, 'P', 0,
'o', 0, 'r', 0, 't', 0
};
/*
* Serial Number string.
*/
static const uint8_t vcom_string3[] = {
USB_DESC_BYTE(8), /* bLength. */
USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
'0' + CH_KERNEL_MAJOR, 0,
'0' + CH_KERNEL_MINOR, 0,
'0' + CH_KERNEL_PATCH, 0
};
/*
* Strings wrappers array.
*/
static const USBDescriptor vcom_strings[] = {
{sizeof vcom_string0, vcom_string0},
{sizeof vcom_string1, vcom_string1},
{sizeof vcom_string2, vcom_string2},
{sizeof vcom_string3, vcom_string3}
};
/*
* Handles the GET_DESCRIPTOR callback. All required descriptors must be
* handled here.
*/
static const USBDescriptor *get_descriptor(USBDriver *usbp,
uint8_t dtype,
uint8_t dindex,
uint16_t lang) {
(void)usbp;
(void)lang;
switch (dtype) {
case USB_DESCRIPTOR_DEVICE:
return &vcom_device_descriptor;
case USB_DESCRIPTOR_CONFIGURATION:
return &vcom_configuration_descriptor;
case USB_DESCRIPTOR_STRING:
if (dindex < 4)
return &vcom_strings[dindex];
}
return NULL;
}
/**
* @brief IN EP1 state.
*/
static USBInEndpointState ep1instate;
/**
* @brief OUT EP1 state.
*/
static USBOutEndpointState ep1outstate;
/**
* @brief EP1 initialization structure (both IN and OUT).
*/
static const USBEndpointConfig ep1config = {
USB_EP_MODE_TYPE_BULK,
NULL,
sduDataTransmitted,
sduDataReceived,
0x0040,
0x0040,
&ep1instate,
&ep1outstate,
2,
NULL
};
/**
* @brief IN EP2 state.
*/
static USBInEndpointState ep2instate;
/**
* @brief EP2 initialization structure (IN only).
*/
static const USBEndpointConfig ep2config = {
USB_EP_MODE_TYPE_INTR,
NULL,
sduInterruptTransmitted,
NULL,
0x0010,
0x0000,
&ep2instate,
NULL,
1,
NULL
};
/*
* Handles the USB driver global events.
*/
static void usb_event(USBDriver *usbp, usbevent_t event) {
switch (event) {
case USB_EVENT_RESET:
return;
case USB_EVENT_ADDRESS:
return;
case USB_EVENT_CONFIGURED:
chSysLockFromISR();
/* Enables the endpoints specified into the configuration.
Note, this callback is invoked from an ISR so I-Class functions
must be used.*/
usbInitEndpointI(usbp, USBD2_DATA_REQUEST_EP, &ep1config);
usbInitEndpointI(usbp, USBD2_INTERRUPT_REQUEST_EP, &ep2config);
/* Resetting the state of the CDC subsystem.*/
sduConfigureHookI(&SDU1);
chSysUnlockFromISR();
return;
case USB_EVENT_SUSPEND:
return;
case USB_EVENT_WAKEUP:
return;
case USB_EVENT_STALLED:
return;
}
return;
}
/*
* USB driver configuration.
*/
static const USBConfig usbcfg = {
usb_event,
get_descriptor,
sduRequestsHook,
NULL
};
/*
* Serial over USB driver configuration.
*/
const SerialUSBConfig serusbcfg = {
&USBD1,
USBD2_DATA_REQUEST_EP,
USBD2_DATA_AVAILABLE_EP,
USBD2_INTERRUPT_REQUEST_EP
};
void comm_usb_serial_init(void) {
palSetPadMode(GPIOA, 11,
PAL_MODE_ALTERNATE(GPIO_AF_OTG_FS) |
PAL_STM32_OTYPE_PUSHPULL |
PAL_STM32_OSPEED_MID1);
palSetPadMode(GPIOA, 12,
PAL_MODE_ALTERNATE(GPIO_AF_OTG_FS) |
PAL_STM32_OTYPE_PUSHPULL |
PAL_STM32_OSPEED_MID1);
sduObjectInit(&SDU1);
sduStart(&SDU1, &serusbcfg);
/*
* Activates the USB driver and then the USB bus pull-up on D+.
* Note, a delay is inserted in order to not have to disconnect the cable
* after a reset.
*/
usbDisconnectBus(serusbcfg.usbp);
chThdSleepMilliseconds(1500);
usbStart(serusbcfg.usbp, &usbcfg);
usbConnectBus(serusbcfg.usbp);
}
int comm_usb_serial_is_active(void) {
return SDU1.config->usbp->state == USB_ACTIVE;
}