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usb_ser_hw.c
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1/*
2 ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
3 2011,2012 Giovanni Di Sirio.
4
5 This file is part of ChibiOS/RT.
6
7 ChibiOS/RT is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 ChibiOS/RT is distributed in the hope that it will be ueful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21
22
23#include <stdio.h>
24#include <string.h>
25#include "ch.h"
26#include "hal.h"
27#include "hal_serial_usb.h"
28#include "mcu_periph/usb_serial.h"
29
30#if HAL_USE_SERIAL_USB
31
32#ifndef SERIAL_USB
33#define SERIAL_USB USBD1
34#endif
35
39#ifndef USBD1_DATA_REQUEST_EP
40#define USBD1_DATA_REQUEST_EP 1
41#endif
42#ifndef USBD1_DATA_AVAILABLE_EP
43#define USBD1_DATA_AVAILABLE_EP 1
44#endif
45#ifndef USBD1_INTERRUPT_REQUEST_EP
46#define USBD1_INTERRUPT_REQUEST_EP 2
47#endif
48
52#define USB_NUM_INTERFACES 2
53#define USB_CDC_CIF_NUM0 0
54#define USB_CDC_DIF_NUM0 1
55
56
57//------------------------------ 2 serial USB --------------------------
58#if USBD_NUMBER >= 2
59#ifndef USBD2_DATA_REQUEST_EP
60#define USBD2_DATA_REQUEST_EP 3
61#endif
62#ifndef USBD2_DATA_AVAILABLE_EP
63#define USBD2_DATA_AVAILABLE_EP 3
64#endif
65#ifndef USBD2_INTERRUPT_REQUEST_EP
66#define USBD2_INTERRUPT_REQUEST_EP 4
67#endif
68#undef USB_NUM_INTERFACES
69#define USB_NUM_INTERFACES 4
70#define USB_CDC_CIF_NUM1 2
71#define USB_CDC_DIF_NUM1 3
72#endif
73
74
75#define USB_INTERRUPT_REQUEST_SIZE 0x10
76#define USB_DATA_SIZE 0x40
77
78
79
80#if (CH_KERNEL_MAJOR == 2)
81 static EventListener inputAvailEL = {NULL, NULL, 0, 0};
82#else
83 static event_listener_t inputAvailEL = {NULL, NULL, 0, 0, 0};
84#endif
85/*===========================================================================*/
86/* USB related stuff. */
87/*===========================================================================*/
88
89
90
91/*
92 * USB Device Descriptor.
93 */
94static const uint8_t vcom_device_descriptor_data[18] = {
95 USB_DESC_DEVICE (0x0200, /* bcdUSB (1.1). */
96 0xEF, /* bDeviceClass (misc). */
97 0x02, /* bDeviceSubClass (common). */
98 0x01, /* bDeviceProtocol (IAD). */
99 USB_DATA_SIZE, /* bMaxPacketSize. */
100 0x0483, /* idVendor (ST). */
101 0x5740, /* idProduct. */
102 0x0200, /* bcdDevice. */
103 1, /* iManufacturer. */
104 2, /* iProduct. */
105 3, /* iSerialNumber. */
106 1) /* bNumConfigurations. */
107};
108
109
110/*
111 * Device Descriptor wrapper.
112 */
113static const USBDescriptor vcom_device_descriptor = {
114 sizeof vcom_device_descriptor_data,
115 vcom_device_descriptor_data
116};
117
118#define CDC_IF_DESC_SET_SIZE \
119 (USB_DESC_INTERFACE_SIZE + 5 + 5 + 4 + 5 + USB_DESC_ENDPOINT_SIZE + \
120 USB_DESC_INTERFACE_SIZE + (USB_DESC_ENDPOINT_SIZE * 2))
121
122#define IAD_CDC_IF_DESC_SET_SIZE \
123 (USB_DESC_INTERFACE_ASSOCIATION_SIZE + CDC_IF_DESC_SET_SIZE)
124
125#define CONFIG_DESC_DATA_SIZE (USB_DESC_CONFIGURATION_SIZE + (IAD_CDC_IF_DESC_SET_SIZE*USBD_NUMBER))
126
127/* Configuration Descriptor tree for a CDC.*/
128static const uint8_t vcom_configuration_descriptor_data[CONFIG_DESC_DATA_SIZE] = {
129 /* Configuration Descriptor.*/
130 USB_DESC_CONFIGURATION(
131 CONFIG_DESC_DATA_SIZE, /* wTotalLength. */
132 USB_NUM_INTERFACES, /* bNumInterfaces. */
133 0x01, /* bConfigurationValue. */
134 0, /* iConfiguration. */
135 0x80, /* bmAttributes (self powered). */
136 50), /* bMaxPower (100mA). */
137
138
139 /* Interface Descriptor. USB serial 1.*/
140 USB_DESC_INTERFACE(
141 USB_CDC_CIF_NUM0, /* bInterfaceNumber. */
142 0x00, /* bAlternateSetting. */
143 0x01, /* bNumEndpoints. */
144 CDC_COMMUNICATION_INTERFACE_CLASS, /* bInterfaceClass */
145 CDC_ABSTRACT_CONTROL_MODEL, /* bInterfaceSubClass */
146 0x00, /* bInterfaceProtocol (CDC section 4.4)*/
147 4), /* iInterface: Descriptor index */
148 /* Header Functional Descriptor (CDC section 5.2.3).*/
149 USB_DESC_BYTE (5), /* bLength. */
150 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
151 USB_DESC_BYTE (CDC_HEADER), /* bDescriptorSubtype */
152 USB_DESC_BCD (0x0110), /* bcdCDC. */
153 /* Call Management Functional Descriptor. */
154 USB_DESC_BYTE (5), /* bFunctionLength. */
155 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
156 USB_DESC_BYTE (CDC_CALL_MANAGEMENT), /* bDescriptorSubtype */
157 USB_DESC_BYTE (0x00), /* bmCapabilities (D0+D1). */
158 USB_DESC_BYTE (USB_CDC_DIF_NUM0), /* bDataInterface. */
159 /* ACM Functional Descriptor.*/
160 USB_DESC_BYTE (4), /* bFunctionLength. */
161 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
162 USB_DESC_BYTE (CDC_ABSTRACT_CONTROL_MANAGEMENT), /* bDescriptorSubtype */
163 USB_DESC_BYTE (0x02), /* bmCapabilities. */
164 /* Union Functional Descriptor.*/
165 USB_DESC_BYTE (5), /* bFunctionLength. */
166 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
167 USB_DESC_BYTE (CDC_UNION), /* bDescriptorSubtype */
168 USB_DESC_BYTE (USB_CDC_CIF_NUM0), /* bMasterInterface */
169 USB_DESC_BYTE (USB_CDC_DIF_NUM0), /* bSlaveInterface0 */
170 /* Endpoint, Interrupt IN.*/
171 USB_DESC_ENDPOINT(
172 USB_ENDPOINT_IN(USBD1_INTERRUPT_REQUEST_EP),
173 USB_EP_MODE_TYPE_INTR, /* bmAttributes (Interrupt). */
174 USB_INTERRUPT_REQUEST_SIZE, /* wMaxPacketSize. */
175 0xFF), /* bInterval. */
176 /* Interface Descriptor.*/
177 USB_DESC_INTERFACE(
178 USB_CDC_DIF_NUM0, /* bInterfaceNumber. */
179 0x00, /* bAlternateSetting. */
180 0x02, /* bNumEndpoints. */
181 CDC_DATA_INTERFACE_CLASS, /* bInterfaceClass */
182 0x00, /* bInterfaceSubClass (CDC sec. 4.6)*/
183 0x00, /* bInterfaceProtocol (CDC sec. 4.7)*/
184 0x00), /* iInterface. */
185 /* Endpoint, Bulk OUT.*/
186 USB_DESC_ENDPOINT(
187 USB_ENDPOINT_OUT(USBD1_DATA_AVAILABLE_EP), /* bEndpointAddress. */
188 USB_EP_MODE_TYPE_BULK, /* bmAttributes (Bulk). */
189 USB_DATA_SIZE, /* wMaxPacketSize. */
190 0x00), /* bInterval. */
191 /* Endpoint, Bulk IN*/
192 USB_DESC_ENDPOINT(
193 USB_ENDPOINT_IN(USBD1_DATA_REQUEST_EP), /* bEndpointAddress. */
194 USB_EP_MODE_TYPE_BULK, /* bmAttributes (Bulk). */
195 USB_DATA_SIZE, /* wMaxPacketSize. */
196 0x00), /* bInterval. */
197
198
199
200#if USBD_NUMBER >= 2
201 /* Interface Descriptor. USB serial 2.*/
202 USB_DESC_INTERFACE(
203 USB_CDC_CIF_NUM1, /* bInterfaceNumber. */
204 0x00, /* bAlternateSetting. */
205 0x01, /* bNumEndpoints. */
206 CDC_COMMUNICATION_INTERFACE_CLASS, /* bInterfaceClass */
207 CDC_ABSTRACT_CONTROL_MODEL, /* bInterfaceSubClass */
208 0x00, /* bInterfaceProtocol (CDC section 4.4)*/
209 5), /* iInterface: Descriptor index */
210 /* Header Functional Descriptor (CDC section 5.2.3).*/
211 USB_DESC_BYTE (5), /* bLength. */
212 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
213 USB_DESC_BYTE (CDC_HEADER), /* bDescriptorSubtype */
214 USB_DESC_BCD (0x0110), /* bcdCDC. */
215 /* Call Management Functional Descriptor. */
216 USB_DESC_BYTE (5), /* bFunctionLength. */
217 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
218 USB_DESC_BYTE (CDC_CALL_MANAGEMENT), /* bDescriptorSubtype */
219 USB_DESC_BYTE (0x00), /* bmCapabilities (D0+D1). */
220 USB_DESC_BYTE (USB_CDC_DIF_NUM1), /* bDataInterface. */
221 /* ACM Functional Descriptor.*/
222 USB_DESC_BYTE (4), /* bFunctionLength. */
223 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
224 USB_DESC_BYTE (CDC_ABSTRACT_CONTROL_MANAGEMENT), /* bDescriptorSubtype */
225 USB_DESC_BYTE (0x02), /* bmCapabilities. */
226 /* Union Functional Descriptor.*/
227 USB_DESC_BYTE (5), /* bFunctionLength. */
228 USB_DESC_BYTE (CDC_CS_INTERFACE), /* bDescriptorType (CS_INTERFACE). */
229 USB_DESC_BYTE (CDC_UNION), /* bDescriptorSubtype */
230 USB_DESC_BYTE (USB_CDC_CIF_NUM1), /* bMasterInterface */
231 USB_DESC_BYTE (USB_CDC_DIF_NUM1), /* bSlaveInterface0 */
232 /* Endpoint, Interrupt IN.*/
233 USB_DESC_ENDPOINT(
234 USB_ENDPOINT_IN(USBD2_INTERRUPT_REQUEST_EP),
235 USB_EP_MODE_TYPE_INTR, /* bmAttributes (Interrupt). */
236 USB_INTERRUPT_REQUEST_SIZE, /* wMaxPacketSize. */
237 0xFF), /* bInterval. */
238 /* Interface Descriptor.*/
239 USB_DESC_INTERFACE(
240 USB_CDC_DIF_NUM1, /* bInterfaceNumber. */
241 0x00, /* bAlternateSetting. */
242 0x02, /* bNumEndpoints. */
243 CDC_DATA_INTERFACE_CLASS, /* bInterfaceClass */
244 0x00, /* bInterfaceSubClass (CDC sec. 4.6)*/
245 0x00, /* bInterfaceProtocol (CDC sec. 4.7)*/
246 0x00), /* iInterface. */
247 /* Endpoint, Bulk OUT.*/
248 USB_DESC_ENDPOINT(
249 USB_ENDPOINT_OUT(USBD2_DATA_AVAILABLE_EP), /* bEndpointAddress. */
250 USB_EP_MODE_TYPE_BULK, /* bmAttributes (Bulk). */
251 USB_DATA_SIZE, /* wMaxPacketSize. */
252 0x00), /* bInterval. */
253 /* Endpoint, Bulk IN*/
254 USB_DESC_ENDPOINT(
255 USB_ENDPOINT_IN(USBD2_DATA_REQUEST_EP), /* bEndpointAddress. */
256 USB_EP_MODE_TYPE_BULK, /* bmAttributes (Bulk). */
257 USB_DATA_SIZE, /* wMaxPacketSize. */
258 0x00) /* bInterval. */
259#endif
260};
261
262/*
263 * Configuration Descriptor wrapper.
264 */
265static const USBDescriptor vcom_configuration_descriptor = {
266 sizeof vcom_configuration_descriptor_data,
267 vcom_configuration_descriptor_data
268};
269
270/*
271 * U.S. English language identifier.
272 */
273static const uint8_t vcom_string0[] = {
274 USB_DESC_BYTE(4), /* bLength. */
275 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
276 USB_DESC_WORD(0x0409) /* wLANGID (U.S. English). */
277};
278
279/*
280 * Vendor string.
281 */
282static const uint8_t vcom_string1[] = {
283 USB_DESC_BYTE(28), /* bLength. */
284 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
285 'P', 0, 'a', 0, 'p', 0, 'a', 0, 'r', 0, 'a', 0, 'z', 0, 'z', 0,
286 'i', 0, ' ', 0, 'U', 0, 'A', 0, 'V', 0
287};
288
289/*
290 * Device Description string.
291 */
292static const uint8_t vcom_string2[] = {
293 USB_DESC_BYTE(34), /* bLength. */
294 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
295 'C', 0, 'D', 0, 'C', 0, ' ', 0, 'S', 0, 'e', 0, 'r', 0, 'i', 0,
296 'a', 0, 'l', 0, ' ', 0, 'S', 0, 'T', 0, 'M', 0, '3', 0, '2', 0
297};
298
299/*
300 * Serial Number string.
301 */
302static const uint8_t vcom_string3[] = {
303 USB_DESC_BYTE(8), /* bLength. */
304 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
305 '0' + CH_KERNEL_MAJOR, 0,
306 '0' + CH_KERNEL_MINOR, 0,
307 '0' + CH_KERNEL_PATCH, 0
308};
309
313static const uint8_t vcom_string4[] = {
314 USB_DESC_BYTE(58), /* bLength. */
315 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
316 'P', 0, 'a', 0, 'p', 0, 'a', 0, 'r', 0, 'a', 0, 'z', 0, 'z', 0,
317 'i', 0, ' ', 0, 'U', 0, 'A', 0, 'V', 0, ' ', 0, 't', 0, 'e', 0,
318 'l', 0, 'e', 0, 'm', 0, 'e', 0, 't', 0, 'r', 0, 'y', 0, ' ', 0,
319 'P', 0, 'o', 0, 'r', 0, 't', 0
320};
321
322#if USBD_NUMBER >= 2
326static const uint8_t vcom_string5[] = {
327 USB_DESC_BYTE(54), /* bLength. */
328 USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
329 'P', 0, 'a', 0, 'p', 0, 'a', 0, 'r', 0, 'a', 0, 'z', 0, 'z', 0,
330 'i', 0, ' ', 0, 'U', 0, 'A', 0, 'V', 0, ' ', 0, 'd', 0, 'e', 0,
331 'b', 0, 'u', 0, 'g', 0, ' ', 0, 'P', 0, 'o', 0, 'r', 0, 't', 0
332};
333#endif
334
335/*
336 * Strings wrappers array.
337 */
338static const USBDescriptor vcom_strings[] = {
339 {sizeof vcom_string0, vcom_string0},
340 {sizeof vcom_string1, vcom_string1},
341 {sizeof vcom_string2, vcom_string2},
342 {sizeof vcom_string3, vcom_string3},
343 {sizeof vcom_string4, vcom_string4},
344#if USBD_NUMBER >= 2
345 {sizeof vcom_string5, vcom_string5}
346#endif
347};
348
349
350static SerialUSBDriver SDU1;
351#if USBD_NUMBER >= 2
352static SerialUSBDriver SDU2;
353#endif
354
355/*
356 * Handles the GET_DESCRIPTOR callback. All required descriptors must be
357 * handled here.
358 */
359static const USBDescriptor *get_descriptor(USBDriver *usbp,
360 uint8_t dtype,
361 uint8_t dindex,
362 uint16_t lang) {
363
364 (void)usbp;
365 (void)lang;
366 switch (dtype) {
367 case USB_DESCRIPTOR_DEVICE:
368 return &vcom_device_descriptor;
369 case USB_DESCRIPTOR_CONFIGURATION:
370 return &vcom_configuration_descriptor;
371 case USB_DESCRIPTOR_STRING:
372 if (dindex < 6)
373 return &vcom_strings[dindex];
374 }
375 return NULL;
376}
377
378
382static USBInEndpointState ep1instate;
383
387static USBOutEndpointState ep1outstate;
388
392static const USBEndpointConfig ep1config = {
393 USB_EP_MODE_TYPE_BULK,
394 NULL,
395 sduDataTransmitted,
396 sduDataReceived,
397 USB_DATA_SIZE,
398 USB_DATA_SIZE,
399 &ep1instate,
400 &ep1outstate,
401 2,
402 NULL
403};
404
408static USBInEndpointState ep2instate;
409
413static const USBEndpointConfig ep2config = {
414 USB_EP_MODE_TYPE_INTR,
415 NULL,
416 sduInterruptTransmitted,
417 NULL,
418 USB_INTERRUPT_REQUEST_SIZE,
419 0x0000,
420 &ep2instate,
421 NULL,
422 1,
423 NULL
424};
425
426#if USBD_NUMBER >= 2
430static USBInEndpointState ep3instate;
431
435static USBOutEndpointState ep3outstate;
436
440static const USBEndpointConfig ep3config = {
441 USB_EP_MODE_TYPE_BULK,
442 NULL,
443 sduDataTransmitted,
444 sduDataReceived,
445 USB_DATA_SIZE,
446 USB_DATA_SIZE,
447 &ep3instate,
448 &ep3outstate,
449 2,
450 NULL
451};
452
456static USBInEndpointState ep4instate;
457
461static const USBEndpointConfig ep4config = {
462 USB_EP_MODE_TYPE_INTR,
463 NULL,
464 sduInterruptTransmitted,
465 NULL,
466 USB_INTERRUPT_REQUEST_SIZE,
467 0x0000,
468 &ep4instate,
469 NULL,
470 1,
471 NULL
472};
473#endif
474
475
476
477/*
478 * Handles the USB driver global events.
479 */
480static void usb_event(USBDriver *usbp, usbevent_t event) {
481
482 switch (event) {
483 case USB_EVENT_RESET:
484 return;
485 case USB_EVENT_ADDRESS:
486 return;
487 case USB_EVENT_CONFIGURED:
488 chSysLockFromISR();
489
490
491 if (usbp->state == USB_ACTIVE) {
492 /* Enables the endpoints specified into the configuration.
493 Note, this callback is invoked from an ISR so I-Class functions
494 must be used.*/
495 usbInitEndpointI(usbp, USBD1_DATA_REQUEST_EP, &ep1config);
496 usbInitEndpointI(usbp, USBD1_INTERRUPT_REQUEST_EP, &ep2config);
497#if USBD_NUMBER >= 2
498 usbInitEndpointI(usbp, USBD2_DATA_REQUEST_EP, &ep3config);
499 usbInitEndpointI(usbp, USBD2_INTERRUPT_REQUEST_EP, &ep4config);
500#endif
501 /* Resetting the state of the CDC subsystem.*/
502 sduConfigureHookI(&SDU1);
503#if USBD_NUMBER >= 2
504 sduConfigureHookI(&SDU2);
505#endif
506 }
507 else if (usbp->state == USB_SELECTED) {
508 usbDisableEndpointsI(usbp);
509 }
510
511 chSysUnlockFromISR();
512 return;
513 case USB_EVENT_UNCONFIGURED:
514 return;
515 case USB_EVENT_SUSPEND:
516 chSysLockFromISR();
517
518 /* Disconnection event on suspend.*/
519 sduSuspendHookI(&SDU1);
520#if USBD_NUMBER >= 2
521 sduSuspendHookI(&SDU2);
522#endif
523 chSysUnlockFromISR();
524 return;
525 case USB_EVENT_WAKEUP:
526 return;
527 case USB_EVENT_STALLED:
528 return;
529 }
530 return;
531}
532
533/*
534 * Handles the USB driver global events.
535 */
536static void sof_handler(USBDriver *usbp)
537{
538 (void)usbp;
539
540 chSysLockFromISR();
541 sduSOFHookI(&SDU1);
542#if USBD_NUMBER >= 2
543 sduSOFHookI(&SDU2);
544#endif
545 chSysUnlockFromISR();
546}
547
548/*
549 * Serial over USB driver configuration.
550 */
551static const USBConfig usbcfg = {
552 usb_event,
553 get_descriptor,
554 sduRequestsHook,
555 sof_handler
556};
557
558static SerialUSBConfig serusbcfg1;
559#if USBD_NUMBER >= 2
560static SerialUSBConfig serusbcfg2;
561#endif
562
563USBDriver *usbGetDriver (void)
564{
565 return serusbcfg1.usbp;
566}
567
568
569
570bool isUsbConnected(void)
571{
572 static bool hasEverReceive = FALSE;
573
574#if (CH_KERNEL_MAJOR <= 3)
575 if (inputAvailEL.el_listener == NULL)
576#else
577 if (inputAvailEL.listener == NULL)
578#endif
579 return FALSE;
580
581 if (hasEverReceive)
582 return TRUE;
583 else
584 return ((hasEverReceive = chEvtGetAndClearFlags(&inputAvailEL)) != 0);
585}
586
587
588
589
590void usbSerialReset(SerialUSBDriver *sdu)
591{
592 usbStop(serusbcfg1.usbp);
593 usbDisconnectBus(serusbcfg1.usbp);
594 sduStop (sdu);
595
596 chThdSleepMilliseconds(10);
597 sduStart(sdu, &serusbcfg1);
598 usbDisconnectBus(serusbcfg1.usbp);
599 chThdSleepMilliseconds(900);
600 usbStart(serusbcfg1.usbp, &usbcfg);
601 usbConnectBus(serusbcfg1.usbp);
602}
603
604
605/*
606 * For USB telemetry & generic device API
607 */
608// Periph with generic device API
609struct usb_serial_periph usb_serial;
610#if USBD_NUMBER >= 2
611struct usb_serial_periph usb_serial_debug;
612#endif
613
614// Functions for the generic device API
615static int usb_serial_check_free_space(struct usb_serial_periph *p __attribute__((unused)),
616 long *fd __attribute__((unused)),
617 uint16_t len)
618{
619 return len;
620}
621
622static void usb_serial_transmit(struct usb_serial_periph *p __attribute__((unused)),
623 long fd __attribute__((unused)),
624 uint8_t byte)
625{
626 obqPutTimeout(&((SerialUSBDriver *)p->reg_addr)->obqueue, byte, TIME_IMMEDIATE);
627}
628
629static void usb_serial_transmit_buffer(struct usb_serial_periph *p __attribute__((unused)),
630 long fd __attribute__((unused)),
631 uint8_t *data, uint16_t len)
632{
633 obqWriteTimeout(&((SerialUSBDriver *)p->reg_addr)->obqueue, data, len, TIME_IMMEDIATE);
634}
635
636static void usb_serial_send(struct usb_serial_periph *p __attribute__((unused)), long fd __attribute__((unused)))
637{
638 // TODO
639}
640
641static int usb_serial_char_available(struct usb_serial_periph *p __attribute__((unused)))
642{
643 // some bytes in the buffer
644 if(p->nb_bytes > 0) {
645 return p->nb_bytes;
646 }
647
648 uint16_t write_idx = (p->rx_read_idx + p->nb_bytes) % USB_RX_BUFFER_SIZE;
649
650 // no bytes in the buffer, try to get one
651 msg_t res = ibqGetTimeout(&(((SerialUSBDriver*)(p->reg_addr))->ibqueue), TIME_IMMEDIATE);
652 if(res >= 0) {
653 // got a byte. put it in the buffer.
654 p->rx_buf[write_idx] = (uint8_t) res;
655 p->nb_bytes++;
656 return p->nb_bytes;
657 } else {
658 // timeout or queue suspended. No data available.
659 return 0;
660 }
661}
662
663static uint8_t usb_serial_getch(struct usb_serial_periph *p __attribute__((unused)))
664{
665 if(p->nb_bytes > 0) {
666 uint8_t ret = p->rx_buf[p->rx_read_idx];
667 p->rx_read_idx = (p->rx_read_idx + 1) % USB_RX_BUFFER_SIZE;
668 p->nb_bytes--;
669 return ret;
670 } else {
671 return ibqGetTimeout(&((SerialUSBDriver *)p->reg_addr)->ibqueue, TIME_IMMEDIATE);
672 }
673}
674
675
676
677
678/*
679 * usb init
680 */
681void VCOM_init()
682{
683 serusbcfg1.usbp = &SERIAL_USB;
684 serusbcfg1.bulk_in = USBD1_DATA_REQUEST_EP;
685 serusbcfg1.bulk_out = USBD1_DATA_AVAILABLE_EP;
686 serusbcfg1.int_in = USBD1_INTERRUPT_REQUEST_EP;
687#if USBD_NUMBER >= 2
688 serusbcfg2.usbp = &SERIAL_USB;
689 serusbcfg2.bulk_in = USBD2_DATA_REQUEST_EP;
690 serusbcfg2.bulk_out = USBD2_DATA_AVAILABLE_EP;
691 serusbcfg2.int_in = USBD2_INTERRUPT_REQUEST_EP;
692#endif
693
694 sduObjectInit(&SDU1);
695 sduStart(&SDU1, &serusbcfg1);
696#if USBD_NUMBER >= 2
697 sduObjectInit(&SDU2);
698 sduStart(&SDU2, &serusbcfg2);
699#endif
700
701 usbDisconnectBus(serusbcfg1.usbp);
702 chThdSleepMilliseconds(1000);
703 usbStart(serusbcfg1.usbp, &usbcfg);
704 usbConnectBus(serusbcfg1.usbp);
705
706 chEvtRegisterMask(chnGetEventSource(&SDU1), &inputAvailEL, CHN_INPUT_AVAILABLE);
707
708
709
710 usb_serial.nb_bytes = 0;
711 usb_serial.rx_read_idx = 0;
712 usb_serial.reg_addr = &SDU1;
713 // Configure generic device
714 usb_serial.device.periph = (void *)(&usb_serial);
715 usb_serial.device.check_free_space = (check_free_space_t) usb_serial_check_free_space;
716 usb_serial.device.put_byte = (put_byte_t) usb_serial_transmit;
717 usb_serial.device.put_buffer = (put_buffer_t) usb_serial_transmit_buffer;
718 usb_serial.device.send_message = (send_message_t) usb_serial_send;
719 usb_serial.device.char_available = (char_available_t) usb_serial_char_available;
720 usb_serial.device.get_byte = (get_byte_t) usb_serial_getch;
721
722
723#if USBD_NUMBER >= 2
724 usb_serial_debug.nb_bytes = 0;
725 usb_serial_debug.rx_read_idx = 0;
726 usb_serial_debug.reg_addr = &SDU2;
727 // Configure generic device
728 usb_serial_debug.device.periph = (void *)(&usb_serial_debug);
729 usb_serial_debug.device.check_free_space = (check_free_space_t) usb_serial_check_free_space;
730 usb_serial_debug.device.put_byte = (put_byte_t) usb_serial_transmit;
731 usb_serial_debug.device.put_buffer = (put_buffer_t) usb_serial_transmit_buffer;
732 usb_serial_debug.device.send_message = (send_message_t) usb_serial_send;
733 usb_serial_debug.device.char_available = (char_available_t) usb_serial_char_available;
734 usb_serial_debug.device.get_byte = (get_byte_t) usb_serial_getch;
735#endif
736}
737
738
739int VCOM_putchar(int c) {
740 if(!isUsbConnected()) {
741 return -1;
742 }
743 streamPut((SerialUSBDriver*)(usb_serial.reg_addr), c);
744 return c;
745
746}
747
748int VCOM_getchar(void) {
749 return usb_serial_getch(&usb_serial);
750}
751
752int VCOM_peekchar(int ofs __attribute__((unused))) {
753 // Dummy implementation
754 return 0;
755}
756
757bool VCOM_check_free_space(uint16_t len __attribute__((unused))) {
758 return true;
759}
760
761int VCOM_check_available(void) {
762 return usb_serial_char_available(&usb_serial);
763}
764
765void VCOM_set_linecoding(uint8_t mode __attribute__((unused))) {}
766
767void VCOM_allow_linecoding(uint8_t mode __attribute__((unused))) {}
768
769void VCOM_send_message(void) {}
770
771void VCOM_event(void) {}
772
773
774#endif // HAL_USE_SERIAL_USB
p
static float p[2][2]
Definition ins_alt_float.c:273
foo
uint16_t foo
Definition main_demo5.c:58
fd
int fd
Definition serial.c:26
mode
static uint8_t mode
mode holds the current sonar mode mode = 0 used at high altitude, uses 16 wave patterns mode = 1 used...
Definition sonar_bebop.c:65
TRUE
#define TRUE
Definition std.h:4
FALSE
#define FALSE
Definition std.h:5
VCOM_event
void VCOM_event(void)
Poll usb (required by libopencm3).
Definition usb_ser_hw.c:468
VCOM_getchar
int VCOM_getchar(void)
Reads one character from VCOM port.
Definition usb_ser_hw.c:425
VCOM_putchar
int VCOM_putchar(int c)
Writes one character to VCOM port fifo.
Definition usb_ser_hw.c:397
usb_serial_check_free_space
static int usb_serial_check_free_space(struct usb_serial_periph *p, long *fd, uint16_t len)
Definition usb_ser_hw.c:526
usb_serial_transmit_buffer
static void usb_serial_transmit_buffer(struct usb_serial_periph *p, long fd, uint8_t *data, uint16_t len)
Definition usb_ser_hw.c:540
usb_serial_transmit
static void usb_serial_transmit(struct usb_serial_periph *p, long fd, uint8_t byte)
Definition usb_ser_hw.c:533
VCOM_check_available
int VCOM_check_available(void)
Checks if data available in VCOM buffer.
Definition usb_ser_hw.c:459
VCOM_peekchar
int VCOM_peekchar(int ofs)
Reads one character from VCOM port without removing it from the queue.
Definition usb_ser_hw.c:438
VCOM_init
void VCOM_init(void)
Definition usb_ser_hw.c:565
VCOM_send_message
void VCOM_send_message(void)
Send data from fifo right now.
Definition usb_ser_hw.c:487
usb_serial
struct usb_serial_periph usb_serial
Definition usb_ser_hw.c:523
usb_serial_getch
static uint8_t usb_serial_getch(struct usb_serial_periph *p)
Definition usb_ser_hw.c:560
usb_serial_send
static void usb_serial_send(struct usb_serial_periph *p, long fd)
Definition usb_ser_hw.c:550
usb_serial_char_available
static int usb_serial_char_available(struct usb_serial_periph *p)
Definition usb_ser_hw.c:555
VCOM_check_free_space
bool VCOM_check_free_space(uint16_t len)
Checks if buffer free in VCOM buffer.
Definition usb_ser_hw.c:450
usb_serial.h
arch independent USB API
usb_serial_periph::rx_read_idx
uint16_t rx_read_idx
Definition usb_serial.h:54
VCOM_set_linecoding
void VCOM_set_linecoding(uint8_t mode)
usb_serial_periph::device
struct link_device device
Generic device interface.
Definition usb_serial.h:59
VCOM_allow_linecoding
void VCOM_allow_linecoding(uint8_t mode)
usb_serial_periph::reg_addr
void * reg_addr
Definition usb_serial.h:56
USB_RX_BUFFER_SIZE
#define USB_RX_BUFFER_SIZE
Definition usb_serial.h:38
usb_serial_periph::nb_bytes
uint16_t nb_bytes
Definition usb_serial.h:55
usb_serial_periph
Definition usb_serial.h:51
uint16_t
unsigned short uint16_t
Typedef defining 16 bit unsigned short type.
Definition vl53l1_types.h:88
uint8_t
unsigned char uint8_t
Typedef defining 8 bit unsigned char type.
Definition vl53l1_types.h:98