mirror of
https://github.com/eddyem/stm32samples.git
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166 lines
5.4 KiB
C
166 lines
5.4 KiB
C
/*
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* This file is part of the SevenCDCs project.
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* Copyright 2023 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <wchar.h>
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#include "usbhw.h"
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#define EP0DATABUF_SIZE (64)
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#define LASTADDR_DEFAULT (STM32ENDPOINTS * 8)
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// bmRequestType & 0x7f
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#define STANDARD_DEVICE_REQUEST_TYPE 0
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#define STANDARD_ENDPOINT_REQUEST_TYPE 2
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#define VENDOR_REQUEST_TYPE 0x40
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#define CONTROL_REQUEST_TYPE 0x21
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// bRequest, standard; for bmRequestType == 0x80
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#define GET_STATUS 0x00
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#define GET_DESCRIPTOR 0x06
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#define GET_CONFIGURATION 0x08
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// for bmRequestType == 0
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#define CLEAR_FEATURE 0x01
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#define SET_FEATURE 0x03 // unused
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#define SET_ADDRESS 0x05
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#define SET_DESCRIPTOR 0x07 // unused
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#define SET_CONFIGURATION 0x09
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// for bmRequestType == 0x81, 1 or 0xB2
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#define GET_INTERFACE 0x0A // unused
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#define SET_INTERFACE 0x0B // unused
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#define SYNC_FRAME 0x0C // unused
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#define VENDOR_REQUEST 0x01 // unused
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// Class-Specific Control Requests
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#define SEND_ENCAPSULATED_COMMAND 0x00 // unused
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#define GET_ENCAPSULATED_RESPONSE 0x01 // unused
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#define SET_COMM_FEATURE 0x02 // unused
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#define GET_COMM_FEATURE 0x03 // unused
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#define CLEAR_COMM_FEATURE 0x04 // unused
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#define SET_LINE_CODING 0x20
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#define GET_LINE_CODING 0x21
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#define SET_CONTROL_LINE_STATE 0x22
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#define SEND_BREAK 0x23
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// control line states
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#define CONTROL_DTR 0x01
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#define CONTROL_RTS 0x02
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// string descriptors
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enum{
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iLANGUAGE_DESCR,
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iMANUFACTURER_DESCR,
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iPRODUCT_DESCR,
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iSERIAL_DESCR,
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iINTERFACE_DESCR_CMD,
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iINTERFACE_DESCR_USART1,
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iINTERFACE_DESCR_USART2,
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iINTERFACE_DESCR_USART3,
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iINTERFACE_DESCR_USART4,
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iINTERFACE_DESCR_CAN,
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iINTERFACE_DESCR_DBG,
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iDESCR_AMOUNT
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};
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// Types of descriptors
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#define DEVICE_DESCRIPTOR 0x01
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#define CONFIGURATION_DESCRIPTOR 0x02
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#define STRING_DESCRIPTOR 0x03
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#define DEVICE_QUALIFIER_DESCRIPTOR 0x06
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#define RX_FLAG(epstat) (epstat & USB_EPnR_CTR_RX)
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#define TX_FLAG(epstat) (epstat & USB_EPnR_CTR_TX)
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#define SETUP_FLAG(epstat) (epstat & USB_EPnR_SETUP)
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// EPnR bits manipulation
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#define KEEP_DTOG_STAT(EPnR) (EPnR & ~(USB_EPnR_STAT_RX|USB_EPnR_STAT_TX|USB_EPnR_DTOG_RX|USB_EPnR_DTOG_TX))
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#define KEEP_DTOG(EPnR) (EPnR & ~(USB_EPnR_DTOG_RX|USB_EPnR_DTOG_TX))
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// EP types
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#define EP_TYPE_BULK 0x00
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#define EP_TYPE_CONTROL 0x01
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#define EP_TYPE_ISO 0x02
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#define EP_TYPE_INTERRUPT 0x03
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#define LANG_US (uint16_t)0x0409
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#define _USB_STRING_(name, str) \
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static const struct name \
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{ \
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uint8_t bLength; \
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uint8_t bDescriptorType; \
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uint16_t bString[(sizeof(str) - 2) / 2]; \
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\
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} \
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name = {sizeof(name), 0x03, str}
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#define _USB_LANG_ID_(name, lng_id) \
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\
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static const struct name \
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{ \
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uint8_t bLength; \
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uint8_t bDescriptorType; \
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uint16_t bString; \
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\
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} \
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name = {0x04, 0x03, lng_id}
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// EP0 configuration packet
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typedef struct {
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uint8_t bmRequestType;
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uint8_t bRequest;
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uint16_t wValue;
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uint16_t wIndex;
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uint16_t wLength;
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} config_pack_t;
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// endpoints state
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typedef struct{
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uint16_t *tx_buf; // transmission buffer address
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uint16_t txbufsz; // transmission buffer size
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uint8_t *rx_buf; // reception buffer address
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void (*func)(uint8_t epno); // endpoint action function
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unsigned rx_cnt : 10; // received data counter
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} ep_t;
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typedef struct {
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uint32_t dwDTERate;
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uint8_t bCharFormat;
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#define USB_CDC_1_STOP_BITS 0
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#define USB_CDC_1_5_STOP_BITS 1
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#define USB_CDC_2_STOP_BITS 2
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uint8_t bParityType;
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#define USB_CDC_NO_PARITY 0
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#define USB_CDC_ODD_PARITY 1
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#define USB_CDC_EVEN_PARITY 2
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#define USB_CDC_MARK_PARITY 3
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#define USB_CDC_SPACE_PARITY 4
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uint8_t bDataBits;
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} __attribute__ ((packed)) usb_LineCoding;
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extern ep_t endpoints[];
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extern volatile uint8_t usbON;
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extern config_pack_t *setup_packet;
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extern uint8_t ep0databuf[], setupdatabuf[];
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void EP0_Handler(uint8_t epno);
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void EP_WriteIRQ(uint8_t number, const uint8_t *buf, uint16_t size);
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void EP_Write(uint8_t number, const uint8_t *buf, uint16_t size);
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int EP_Read(uint8_t number, uint8_t *buf);
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