mirror of
https://github.com/eddyem/stm32samples.git
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329 lines
11 KiB
C
329 lines
11 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 <stdint.h>
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#include <wchar.h>
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#ifndef _U_
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#define _U_ __attribute__((unused))
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#endif
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/******************************************************************
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* Hardware registers etc *
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*****************************************************************/
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#if defined STM32F0
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#include <stm32f0.h>
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#elif defined STM32F1
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#include <stm32f1.h>
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// there's no this define in standard header
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#define USB_BASE ((uint32_t)0x40005C00)
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#elif defined STM32F3
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#include <stm32f3.h>
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#endif
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// max endpoints number
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#define STM32ENDPOINTS 8
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/**
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* Buffers size definition
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**/
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// F0 - USB2_16; F1 - USB1_16; F3 - 1/2 depending on series
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#if !defined USB1_16 && !defined USB2_16
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#if defined STM32F0
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#define USB2_16
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#elif defined STM32F1
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#define USB1_16
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#else
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#error "Can't determine USB1_16 or USB2_16, define by hands"
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#endif
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#endif
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// BTABLE_SIZE FOR STM32F3:
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// In STM32F303/302xB/C, 512 bytes SRAM is not shared with CAN.
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// In STM32F302x6/x8 and STM32F30xxD/E, 726 bytes dedicated SRAM and 256 bytes shared SRAM with CAN i.e.
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// 1Kbytes dedicated SRAM in case CAN is disabled.
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// remember, that USB_BTABLE_SIZE will be divided by ACCESSZ, so don't divide it twice for 32-bit addressing
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#ifdef NOCAN
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#if defined STM32F0
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#define USB_BTABLE_SIZE 1024
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#elif defined STM32F3
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#define USB_BTABLE_SIZE 726
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//#warning "Please, check real buffer size due to docs"
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#else
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#error "define STM32F0 or STM32F3"
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#endif
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#else // !NOCAN: F0/F3 with CAN or F1 (can't simultaneously run CAN and USB)
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#if defined STM32F0
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#define USB_BTABLE_SIZE 768
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#elif defined STM32F3
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#define USB_BTABLE_SIZE 726
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//#warning "Please, check real buffer size due to docs"
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#else // STM32F103: 1024 bytes but with 32-bit addressing
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#define USB_BTABLE_SIZE 1024
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#endif
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#endif // NOCAN
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// first 64 bytes of USB_BTABLE are registers!
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#define USB_BTABLE_BASE 0x40006000
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#define USB ((USB_TypeDef *) USB_BASE)
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#ifdef USB_BTABLE
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#undef USB_BTABLE
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#endif
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#define USB_BTABLE ((USB_BtableDef *)(USB_BTABLE_BASE))
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#define USB_ISTR_EPID 0x0000000F
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#define USB_FNR_LSOF_0 0x00000800
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#define USB_FNR_lSOF_1 0x00001000
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#define USB_LPMCSR_BESL_0 0x00000010
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#define USB_LPMCSR_BESL_1 0x00000020
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#define USB_LPMCSR_BESL_2 0x00000040
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#define USB_LPMCSR_BESL_3 0x00000080
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#define USB_EPnR_CTR_RX 0x00008000
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#define USB_EPnR_DTOG_RX 0x00004000
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#define USB_EPnR_STAT_RX 0x00003000
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#define USB_EPnR_STAT_RX_0 0x00001000
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#define USB_EPnR_STAT_RX_1 0x00002000
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#define USB_EPnR_SETUP 0x00000800
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#define USB_EPnR_EP_TYPE 0x00000600
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#define USB_EPnR_EP_TYPE_0 0x00000200
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#define USB_EPnR_EP_TYPE_1 0x00000400
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#define USB_EPnR_EP_KIND 0x00000100
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#define USB_EPnR_CTR_TX 0x00000080
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#define USB_EPnR_DTOG_TX 0x00000040
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#define USB_EPnR_STAT_TX 0x00000030
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#define USB_EPnR_STAT_TX_0 0x00000010
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#define USB_EPnR_STAT_TX_1 0x00000020
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#define USB_EPnR_EA 0x0000000F
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#define USB_COUNTn_RX_BLSIZE 0x00008000
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#define USB_COUNTn_NUM_BLOCK 0x00007C00
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#define USB_COUNTn_RX 0x0000003F
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#define USB_TypeDef USB_TypeDef_custom
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typedef struct {
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__IO uint32_t EPnR[STM32ENDPOINTS];
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__IO uint32_t RESERVED[STM32ENDPOINTS];
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__IO uint32_t CNTR;
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__IO uint32_t ISTR;
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__IO uint32_t FNR;
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__IO uint32_t DADDR;
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__IO uint32_t BTABLE;
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#ifdef STM32F0
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__IO uint32_t LPMCSR;
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__IO uint32_t BCDR;
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#endif
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} USB_TypeDef;
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// F303 D/E have 2x16 access scheme
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typedef struct{
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#if defined USB2_16
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__IO uint16_t USB_ADDR_TX;
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__IO uint16_t USB_COUNT_TX;
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__IO uint16_t USB_ADDR_RX;
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__IO uint16_t USB_COUNT_RX;
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#define ACCESSZ (1)
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#define BUFTYPE uint8_t
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#elif defined USB1_16
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__IO uint32_t USB_ADDR_TX;
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__IO uint32_t USB_COUNT_TX;
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__IO uint32_t USB_ADDR_RX;
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__IO uint32_t USB_COUNT_RX;
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#define ACCESSZ (2)
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#define BUFTYPE uint16_t
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#else
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#error "Define USB1_16 or USB2_16"
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#endif
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} USB_EPDATA_TypeDef;
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typedef struct{
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__IO USB_EPDATA_TypeDef EP[STM32ENDPOINTS];
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} USB_BtableDef;
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#define EP0DATABUF_SIZE (64)
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#define LASTADDR_DEFAULT (STM32ENDPOINTS * 8)
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/******************************************************************
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* Defines from usb.h *
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*****************************************************************/
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/*
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* Device and/or Interface Class codes
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*/
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#define USB_CLASS_PER_INTERFACE 0
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#define USB_CLASS_AUDIO 1
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#define USB_CLASS_COMM 2
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#define USB_CLASS_HID 3
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#define USB_CLASS_PRINTER 7
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#define USB_CLASS_PTP 6
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#define USB_CLASS_MASS_STORAGE 8
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#define USB_CLASS_HUB 9
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#define USB_CLASS_DATA 10
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#define USB_CLASS_MISC 0xef
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#define USB_CLASS_VENDOR_SPEC 0xff
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/*
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* Descriptor types
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*/
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#define USB_DT_DEVICE 0x01
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#define USB_DT_CONFIG 0x02
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#define USB_DT_STRING 0x03
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#define USB_DT_INTERFACE 0x04
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#define USB_DT_ENDPOINT 0x05
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#define USB_DT_QUALIFIER 0x06
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#define USB_DT_IAD 0x0B
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#define USB_DT_HID 0x21
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#define USB_DT_REPORT 0x22
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#define USB_DT_PHYSICAL 0x23
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#define USB_DT_CS_INTERFACE 0x24
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#define USB_DT_HUB 0x29
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/*
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* Descriptor sizes per descriptor type
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*/
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#define USB_DT_DEVICE_SIZE 18
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#define USB_DT_CONFIG_SIZE 9
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#define USB_DT_INTERFACE_SIZE 9
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#define USB_DT_HID_SIZE 9
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#define USB_DT_ENDPOINT_SIZE 7
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#define USB_DT_QUALIFIER_SIZE 10
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#define USB_DT_CS_INTERFACE_SIZE 5
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#define USB_DT_IAD_SIZE 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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//#define VENDOR_REQUEST 0x01
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// standard device requests
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#define GET_STATUS 0x00
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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 GET_DESCRIPTOR 0x06
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#define SET_DESCRIPTOR 0x07
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#define GET_CONFIGURATION 0x08
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#define SET_CONFIGURATION 0x09
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// and some standard interface requests
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#define GET_INTERFACE 0x0A
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#define SET_INTERFACE 0x0B
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// and some standard endpoint requests
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#define SYNC_FRAME 0x0C
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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 DEBUG_DESCRIPTOR 0x0a
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#define HID_REPORT_DESCRIPTOR 0x22
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// EP types for EP_init
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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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// EP types for descriptors
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#define USB_BM_ATTR_CONTROL 0x00
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#define USB_BM_ATTR_ISO 0x01
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#define USB_BM_ATTR_BULK 0x02
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#define USB_BM_ATTR_INTERRUPT 0x03
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/******************************************************************
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* Other stuff *
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*****************************************************************/
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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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#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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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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void USB_setup();
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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 usb_dev.c
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extern void usb_class_request(config_pack_t *packet, uint8_t *data, uint16_t datalen);
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extern void usb_vendor_request(config_pack_t *packet, uint8_t *data, uint16_t datalen);
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extern void set_configuration();
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