mirror of
https://github.com/eddyem/stm32samples.git
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145 lines
4.8 KiB
C
145 lines
4.8 KiB
C
/*
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* Copyright 2024 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 & 0x80 == dev2host (1) or host2dev (0)
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// recipient: bmRequestType & 0x1f
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#define REQUEST_RECIPIENT(b) (b & 0x1f)
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#define REQ_RECIPIENT_DEVICE 0
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#define REQ_RECIPIENT_INTERFACE 1
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#define REQ_RECIPIENT_ENDPOINT 2
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#define REQ_RECIPIENT_OTHER 3
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// type: [bmRequestType & 0x60 >> 5]
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#define REQUEST_TYPE(b) ((b&0x60)>>5)
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#define REQ_TYPE_STANDARD 0
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#define REQ_TYPE_CLASS 1
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#define REQ_TYPE_VENDOR 2
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#define REQ_TYPE_RESERVED 3
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// deprecated defines:
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#define STANDARD_DEVICE_REQUEST_TYPE 0
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#define STANDARD_INTERFACE_REQUEST_TYPE 1
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#define STANDARD_ENDPOINT_REQUEST_TYPE 2
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#define STANDARD_OTHER_REQUEST_TYPE 3
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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
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#define SET_ADDRESS 0x05
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#define SET_DESCRIPTOR 0x07
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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
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#define SET_INTERFACE 0x0B
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#define SYNC_FRAME 0x0C
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#define VENDOR_REQUEST 0x01
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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,
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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)(); // endpoint action function
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unsigned rx_cnt : 10; // received data counter
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} ep_t;
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extern volatile uint8_t usbON;
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int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, void (*func)());
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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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// could be [re]defined in usbdev.c
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extern void usb_class_request(config_pack_t *packet, uint8_t *data, unsigned int datalen);
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extern void usb_vendor_request(config_pack_t *packet, uint8_t *data, unsigned int datalen);
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extern void set_configuration(uint16_t configuration);
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