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stm32samples/F3:F303/Seven_CDCs/usb_lib.c
eddyem 3c7687bb0e still have unknown problems
2023-04-26 23:15:52 +03:00

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/*
* This file is part of the SevenCDCs project.
* Copyright 2023 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include "debug.h"
#ifdef EBUG
#include "strfunc.h"
#endif
#include "usart.h"
#include "usb.h"
#include "usb_lib.h"
#include "usbhw.h"
ep_t endpoints[STM32ENDPOINTS];
static uint16_t USB_Addr = 0;
uint8_t ep0databuf[EP0DATABUF_SIZE], setupdatabuf[EP0DATABUF_SIZE];
config_pack_t *setup_packet = (config_pack_t*) setupdatabuf;
volatile uint8_t usbON = 0;
// definition of parts common for USB_DeviceDescriptor & USB_DeviceQualifierDescriptor
#define bcdUSB_L 0x00
#define bcdUSB_H 0x02
// Class - Misc (EF), subclass - common (2), protocol - interface association descr (1)
#define bDeviceClass 0xEF
#define bDeviceSubClass 0x02
#define bDeviceProtocol 0x01
#define bNumConfigurations 1
static const uint8_t USB_DeviceDescriptor[] = {
18, // bLength
0x01, // bDescriptorType - Device descriptor
bcdUSB_L, // bcdUSB_L - 1.10
bcdUSB_H, // bcdUSB_H
bDeviceClass, // bDeviceClass - USB_COMM
bDeviceSubClass, // bDeviceSubClass
bDeviceProtocol, // bDeviceProtocol
USB_EP0_BUFSZ, // bMaxPacketSize
// 0483:5740 (VID:PID) - stm32 VCP
0x83, 0x04, 0x40, 0x57,
0x00, // bcdDevice_Ver_L
0x02, // bcdDevice_Ver_H
iMANUFACTURER_DESCR, // iManufacturer
iPRODUCT_DESCR, // iProduct
iSERIAL_DESCR, // iSerialNumber
bNumConfigurations // bNumConfigurations
};
static const uint8_t USB_DeviceQualifierDescriptor[] = {
10, //bLength
0x06, // bDescriptorType - Device qualifier
bcdUSB_L, // bcdUSB_L
bcdUSB_H, // bcdUSB_H
bDeviceClass, // bDeviceClass
bDeviceSubClass, // bDeviceSubClass
bDeviceProtocol, // bDeviceProtocol
USB_EP0_BUFSZ, // bMaxPacketSize0
bNumConfigurations, // bNumConfigurations
0x00 // Reserved
};
static const uint8_t USB_ConfigDescriptor[] = {
/* Configuration Descriptor*/
0x09, /* bLength: Configuration Descriptor size */
0x02, /* bDescriptorType: Configuration */
0xD7, /* wTotalLength:no of returned bytes (9+7*66=471, 0x1D7 */
0x01,
14, /* bNumInterfaces: 14 interfaces (7*2) */
0x01, /* bConfigurationValue: Configuration value */
0x00, /* iConfiguration: Index of string descriptor describing the configuration */
0x80, /* bmAttributes - Bus powered */
0x32, /* MaxPower 100 mA */
/*---------------------------------------------------------------------------*/
// IAD0 (66 bytes)
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
0, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/* Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_CMD, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
0x01, /* bDataInterface: 1 */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
0x00, /* bMasterInterface: Communication class interface */
0x01, /* bSlaveInterface0: Data Class Interface */
/*Endpoint 10 Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x88, /* bEndpointAddress IN8 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
0x01, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
0x81, /* bEndpointAddress IN1 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
0x01, /* bEndpointAddress OUT1 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD1: interfaces 2&3, EP2
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 2, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 2, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_USART1, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 3, /* bDataInterface: 3 */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 2, /* bMasterInterface: Communication class interface */
/**/ 3, /* bSlaveInterface0: Data Class Interface */
/*Endpoint 11 Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x89, /* bEndpointAddress IN9 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 3, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x82, /* bEndpointAddress IN2 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x02, /* bEndpointAddress OUT2 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD2: interfaces 4&5, EP3
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 4, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 4, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_USART2, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 5, /* bDataInterface */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 4, /* bMasterInterface: Communication class interface */
/**/ 5, /* bSlaveInterface0: Data Class Interface */
/*Endpoint 11 Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x8a, /* bEndpointAddress IN10 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 5, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x83, /* bEndpointAddress IN3 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x03, /* bEndpointAddress OUT3 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD3: interfaces 6&7, EP4
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 6, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 6, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_USART3, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 7, /* bDataInterface */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 6, /* bMasterInterface: Communication class interface */
/**/ 7, /* bSlaveInterface0: Data Class Interface */
/* Interrupt Endpoint Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x8b, /* bEndpointAddress IN11 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 7, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x84, /* bEndpointAddress IN4 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x04, /* bEndpointAddress OUT4 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD4: interfaces 8&9, EP5
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 8, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 8, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
iINTERFACE_DESCR_USART4, /* bInterfaceProtocol */
0x00, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 9, /* bDataInterface */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 8, /* bMasterInterface: Communication class interface */
/**/ 9, /* bSlaveInterface0: Data Class Interface */
/* Interrupt Endpoint Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x8c, /* bEndpointAddress IN12 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 9, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x85, /* bEndpointAddress IN5 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x05, /* bEndpointAddress OUT5 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD5: interfaces 10&11, EP6
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 10, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 10, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_CAN, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 11, /* bDataInterface */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 10, /* bMasterInterface: Communication class interface */
/**/ 11, /* bSlaveInterface0: Data Class Interface */
/* Interrupt Endpoint Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x8d, /* bEndpointAddress IN13 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 11, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x86, /* bEndpointAddress IN6 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x06, /* bEndpointAddress OUT6 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
// IAD6: interfaces 12&13, EP7
0x08, // bLength: Interface Descriptor size
0x0B, // bDescriptorType: IAD
/**/ 12, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass: CDC
0x02, // bFunctionSubClass
0x00, // bFunctionProtocol
0x00, // iFunction
/*---------------------------------------------------------------------------*/
/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: Interface */
/**/ 12, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x00, /* bInterfaceProtocol */
iINTERFACE_DESCR_DBG, /* iInterface: */
/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
/**/ 13, /* bDataInterface */
/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
/**/ 12, /* bMasterInterface: Communication class interface */
/**/ 13, /* bSlaveInterface0: Data Class Interface */
/* Interrupt Endpoint Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x8e, /* bEndpointAddress IN14 - non-existant! */
0x03, /* bmAttributes: Interrupt */
(USB_EP1BUFSZ & 0xff), /* wMaxPacketSize LO: */
(USB_EP1BUFSZ >> 8), /* wMaxPacketSize HI: */
0x10, /* bInterval: */
/*---------------------------------------------------------------------------*/
/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
0x04, /* bDescriptorType: */
/**/ 13, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x02, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint IN Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x87, /* bEndpointAddress IN7 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint OUT Descriptor */
0x07, /* bLength: Endpoint Descriptor size */
0x05, /* bDescriptorType: Endpoint */
/**/0x07, /* bEndpointAddress OUT7 */
0x02, /* bmAttributes: Bulk */
(USB_TRBUFSZ & 0xff), /* wMaxPacketSize: 64 */
(USB_TRBUFSZ >> 8),
0x00, /* bInterval: ignore for Bulk transfer */
/*---------------------------------------------------------------------------*/
};
_USB_LANG_ID_(LD, LANG_US);
_USB_STRING_(SD, u"0.0.1");
_USB_STRING_(MD, u"Emelianov E.V.");
_USB_STRING_(PD, u"USB multiserial controller");
_USB_STRING_(ID0, u"serial-cmd");
_USB_STRING_(ID1, u"serial-usart1_");
_USB_STRING_(ID2, u"serial-usart2_");
_USB_STRING_(ID3, u"serial-usart3_");
_USB_STRING_(ID4, u"serial-usart4_");
_USB_STRING_(ID5, u"serial-can");
_USB_STRING_(ID6, u"serial-debug");
static void const *StringDescriptor[iDESCR_AMOUNT] = {
[iLANGUAGE_DESCR] = &LD,
[iMANUFACTURER_DESCR] = &MD,
[iPRODUCT_DESCR] = &PD,
[iSERIAL_DESCR] = &SD,
[iINTERFACE_DESCR_CMD] = &ID0,
[iINTERFACE_DESCR_USART1] = &ID1,
[iINTERFACE_DESCR_USART2] = &ID2,
[iINTERFACE_DESCR_USART3] = &ID3,
[iINTERFACE_DESCR_USART4] = &ID4,
[iINTERFACE_DESCR_CAN] = &ID5,
[iINTERFACE_DESCR_DBG] = &ID6
};
static void wr0(const uint8_t *buf, uint16_t size){
if(setup_packet->wLength < size) size = setup_packet->wLength; // shortened request
if(size < endpoints[0].txbufsz){
EP_WriteIRQ(0, buf, size);
return;
}
while(size){
uint16_t l = size;
if(l > endpoints[0].txbufsz) l = endpoints[0].txbufsz;
EP_WriteIRQ(0, buf, l);
buf += l;
size -= l;
uint8_t needzlp = (l == endpoints[0].txbufsz) ? 1 : 0;
if(size || needzlp){ // send last data buffer
uint16_t status = KEEP_DTOG(USB->EPnR[0]);
// keep DTOGs, clear CTR_RX,TX, set TX VALID, leave stat_Rx
USB->EPnR[0] = (status & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX|USB_EPnR_STAT_RX))
^ USB_EPnR_STAT_TX;
uint32_t ctr = 1000000;
while(--ctr && (USB->ISTR & USB_ISTR_CTR) == 0){IWDG->KR = IWDG_REFRESH;};
if((USB->ISTR & USB_ISTR_CTR) == 0){
return;
}
if(needzlp) EP_WriteIRQ(0, (uint8_t*)0, 0);
}
}
}
static inline void get_descriptor(){
uint8_t descrtype = setup_packet->wValue >> 8,
descridx = setup_packet->wValue & 0xff;
switch(descrtype){
case DEVICE_DESCRIPTOR:
wr0(USB_DeviceDescriptor, sizeof(USB_DeviceDescriptor));
break;
case CONFIGURATION_DESCRIPTOR:
wr0(USB_ConfigDescriptor, sizeof(USB_ConfigDescriptor));
break;
case STRING_DESCRIPTOR:
if(descridx < iDESCR_AMOUNT) wr0((const uint8_t *)StringDescriptor[descridx], *((uint8_t*)StringDescriptor[descridx]));
else EP_WriteIRQ(0, (uint8_t*)0, 0);
break;
case DEVICE_QUALIFIER_DESCRIPTOR:
wr0(USB_DeviceQualifierDescriptor, USB_DeviceQualifierDescriptor[0]);
break;
default:
break;
}
}
static uint16_t configuration = 0; // reply for GET_CONFIGURATION (==1 if configured)
static inline void std_d2h_req(){
uint16_t status = 0; // bus powered
switch(setup_packet->bRequest){
case GET_DESCRIPTOR:
get_descriptor();
break;
case GET_STATUS:
EP_WriteIRQ(0, (uint8_t *)&status, 2); // send status: Bus Powered
break;
case GET_CONFIGURATION:
EP_WriteIRQ(0, (uint8_t*)&configuration, 1);
break;
default:
break;
}
}
// Rx and Tx handlers for EP1..EP7
static void rxtx_Handler(uint8_t epno){
uint8_t buf[USB_TRBUFSZ];
int idx = epno - 1;
uint16_t epstatus = KEEP_DTOG(USB->EPnR[epno]);
//uint16_t epstatus = USB->EPnR[epno];
if(RX_FLAG(epstatus)){
epstatus = (epstatus & ~(USB_EPnR_STAT_TX|USB_EPnR_CTR_RX)) ^ USB_EPnR_STAT_RX; // keep stat Tx & set valid RX, clear CTR Rx
USB->EPnR[epno] = epstatus;
//USB->EPnR[epno] = (KEEP_DTOG(epstatus) & ~USB_EPnR_CTR_RX) ^ USB_EPnR_STAT_RX;
uint8_t sz = EP_Read(epno, (uint8_t*)buf);
if(sz){
if(RB_write((ringbuffer*)&rbin[idx], buf, sz) != sz) bufovrfl[idx] = 1;
}
// set ACK Rx
USB->EPnR[epno] = (KEEP_DTOG(USB->EPnR[epno]) & ~(USB_EPnR_STAT_TX)) ^ USB_EPnR_STAT_RX;
}else{
USB->EPnR[epno] = (epstatus & ~(USB_EPnR_STAT_TX|USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_RX; // clear TX ctr
//USB->EPnR[epno] = (KEEP_DTOG_STAT(epstatus) & ~(USB_EPnR_CTR_TX)); // clear TX ctr
send_next(idx);
}
}
static inline void std_h2d_req(){
switch(setup_packet->bRequest){
case SET_ADDRESS:
// new address will be assigned later - after acknowlegement or request to host
USB_Addr = setup_packet->wValue;
break;
case SET_CONFIGURATION:
// Now device configured
configuration = setup_packet->wValue;
for(uint8_t i = 1; i <= WORK_EPs; ++i){
EP_Init(i, EP_TYPE_BULK, USB_TRBUFSZ, USB_TRBUFSZ, rxtx_Handler);
}
break;
default:
break;
}
}
/*
bmRequestType: 76543210
7 direction: 0 - host->device, 1 - device->host
65 type: 0 - standard, 1 - class, 2 - vendor
4..0 getter: 0 - device, 1 - interface, 2 - endpoint, 3 - other
*/
/**
* Endpoint0 (control) handler
*/
void EP0_Handler(uint8_t __attribute__((unused)) epno){
uint16_t epstatus = USB->EPnR[0]; // EP0R on input -> return this value after modifications
uint8_t reqtype = setup_packet->bmRequestType & 0x7f;
uint8_t dev2host = (setup_packet->bmRequestType & 0x80) ? 1 : 0;
int rxflag = RX_FLAG(epstatus);
usb_LineCoding *lc;
// calculate iFno (EP number minus 1) by setup_packet->wIndex (bInterfaceNumber): iFno = wIndex >> 1
int iFno = setup_packet->wIndex >> 1;
DBGmesg(uhex2str(epstatus));
DBGmesg(" - "); hexdump(DBG_IDX, (uint8_t*)setup_packet, sizeof(config_pack_t));
if(rxflag && SETUP_FLAG(epstatus)){
switch(reqtype){
case STANDARD_DEVICE_REQUEST_TYPE: // standard device request
if(dev2host){
std_d2h_req();
}else{
std_h2d_req();
EP_WriteIRQ(0, (uint8_t *)0, 0);
}
break;
case STANDARD_ENDPOINT_REQUEST_TYPE: // standard endpoint request
if(setup_packet->bRequest == CLEAR_FEATURE){
EP_WriteIRQ(0, (uint8_t *)0, 0);
}
break;
case CONTROL_REQUEST_TYPE:
switch(setup_packet->bRequest){
case GET_LINE_CODING:
DBG("GLC");
lc = getLineCoding(iFno);
if(!lc) EP_WriteIRQ(0, (uint8_t *)0, 0);
else EP_WriteIRQ(0, (uint8_t*)&lc, sizeof(usb_LineCoding));
break;
case SET_LINE_CODING: // omit this for next stage, when data will come
DBG("SLC");
break;
case SET_CONTROL_LINE_STATE:
DBG("SCLS");
usbON |= 1 << iFno; // now this interface is connected
break;
case SEND_BREAK:
DBG("B");
usbON &= ~(1<<iFno); // interface is disconnected
break;
default:
DBG("U");
break;
}
if(setup_packet->bRequest != GET_LINE_CODING) EP_WriteIRQ(0, (uint8_t *)0, 0); // write acknowledgement
break;
default:
EP_WriteIRQ(0, (uint8_t *)0, 0);
}
}else if(rxflag){ // got data over EP0 or host acknowlegement
if(endpoints[0].rx_cnt){
if(setup_packet->bRequest == SET_LINE_CODING){
usart_config(iFno + 1 - USART1_EPNO, (usb_LineCoding*)ep0databuf);
}
}
} else if(TX_FLAG(epstatus)){ // package transmitted
// now we can change address after enumeration
if ((USB->DADDR & USB_DADDR_ADD) != USB_Addr){
USB->DADDR = USB_DADDR_EF | USB_Addr;
}
}
epstatus = KEEP_DTOG(USB->EPnR[0]);
if(rxflag) epstatus ^= USB_EPnR_STAT_TX; // start ZLP/data transmission
else epstatus &= ~USB_EPnR_STAT_TX; // or leave unchanged
// keep DTOGs, clear CTR_RX,TX, set RX VALID
USB->EPnR[0] = (epstatus & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_RX;
}
/**
* Write data to EP buffer (called from IRQ handler)
* @param number - EP number
* @param *buf - array with data
* @param size - its size
*/
void EP_WriteIRQ(uint8_t number, const uint8_t *buf, uint16_t size){
if(size > endpoints[number].txbufsz) size = endpoints[number].txbufsz;
uint16_t N2 = (size + 1) >> 1;
// the buffer is 16-bit, so we should copy data as it would be uint16_t
uint16_t *buf16 = (uint16_t *)buf;
#if defined USB1_16
// very bad: what if `size` is odd?
uint32_t *out = (uint32_t *)endpoints[number].tx_buf;
for(int i = 0; i < N2; ++i, ++out){
*out = buf16[i];
}
#elif defined USB2_16
// use memcpy instead?
for(int i = 0; i < N2; i++){
endpoints[number].tx_buf[i] = buf16[i];
}
#else
#error "Define USB1_16 or USB2_16"
#endif
USB_BTABLE->EP[number].USB_COUNT_TX = size;
}
/**
* Write data to EP buffer (called outside IRQ handler)
* @param number - EP number
* @param *buf - array with data
* @param size - its size
*/
void EP_Write(uint8_t number, const uint8_t *buf, uint16_t size){
EP_WriteIRQ(number, buf, size);
uint16_t status = KEEP_DTOG(USB->EPnR[number]);
// keep DTOGs, clear CTR_TX & set TX VALID to start transmission
USB->EPnR[number] = (status & ~(USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_TX;
}
/*
* Copy data from EP buffer into user buffer area
* @param *buf - user array for data
* @return amount of data read
*/
int EP_Read(uint8_t number, uint8_t *buf){
int sz = endpoints[number].rx_cnt;
if(!sz) return 0;
endpoints[number].rx_cnt = 0;
#if defined USB1_16
int n = (sz + 1) >> 1;
uint32_t *in = (uint32_t*)endpoints[number].rx_buf;
uint16_t *out = (uint16_t*)buf;
for(int i = 0; i < n; ++i, ++in)
out[i] = *(uint16_t*)in;
#elif defined USB2_16
// use memcpy instead?
for(int i = 0; i < sz; ++i)
buf[i] = endpoints[number].rx_buf[i];
#else
#error "Define USB1_16 or USB2_16"
#endif
return sz;
}
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