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Add USB CDC and loop-back test

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fruchti 2020-10-11 22:37:46 +02:00
commit 7234eb8360
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136
stm32f103c8t6/src/usb.h Normal file
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#pragma once
#include <string.h>
#include <stdbool.h>
#include "stm32f103x6.h"
#include "pinning.h"
#include "debug.h"
#define USB_TOKEN_OUT 0b0001
#define USB_TOKEN_IN 0x1001
#define USB_TOKEN_SOF 0b0101
#define USB_TOKEN_SETUP 0b1101
#define USB_TOKEN_DATA0 0b0011
#define USB_TOKEN_DATA1 0b1011
#define USB_TOKEN_DATA2 0b0111
#define USB_TOKEN_ACK 0b0010
#define USB_TOKEN_NAK 0b1010
#define USB_TOKEN_STALL 0b1110
#define USB_TOKEN_NYET 0b0110
#define USB_TOKEN_PRE 0b1100
#define USB_TOKEN_ERR 0b1100
#define USB_TOKEN_SPLIT 0b1000
#define USB_TOKEN_PING 0b0100
#define USB_REQUEST_DIRECTION (1 << 7)
#define USB_REQUEST_DIRECTION_OUT 0
#define USB_REQUEST_DIRECTION_IN (1 << 7)
#define USB_REQUEST_TYPE (0x3 << 5)
#define USB_REQUEST_TYPE_STANDARD 0
#define USB_REQUEST_TYPE_CLASS (1 << 5)
#define USB_REQUEST_TYPE_VENDOR (2 << 5)
#define USB_REQUEST_TYPE_RESERVED (3 << 5)
#define USB_REQUEST_RECIPIENT 0x1f
#define USB_REQUEST_RECIPIENT_DEVICE 0
#define USB_REQUEST_RECIPIENT_INTERFACE 1
#define USB_REQUEST_RECIPIENT_ENDPOINT 2
#define USB_REQUEST_RECIPIENT_OTHER 3
#define USB_REQUEST_CLEAR_FEATURE 1
// wValue = <feature>, wIndex = 0|<interface>|<endpoint>, wLength = 0
#define USB_REQUEST_GET_CONFIGURATION 8
// wValue = 0, wIndex = 0, wLength = 1
#define USB_REQUEST_GET_DESCRIPTOR 6
// wValue = <descriptor type>:<descriptor index>, wIndex = 0|<language>,
// wLength = <descriptor length>
#define USB_REQUEST_GET_INTERFACE 10
// wValue = 0, wIndex = <interface>, wLength = 1
#define USB_REQUEST_GET_STATUS 0
// wValue = 0, wIndex = 0|<interface>|<endpoint>, wLength = 2
#define USB_REQUEST_SET_ADDRESS 5
// wValue = <address>, wIndex = 0, wLength = 0
#define USB_REQUEST_SET_CONFIGURATION 9
// wValue = <configuration value>, wIndex = 0, wLength = 0
#define USB_REQUEST_SET_DESCRIPTOR 7
// wValue = <descriptor type>:<descriptor index>, wIndex = 0|<language>,
// wLength = <descriptor length>
#define USB_REQUEST_SET_FEATURE 3
// wValue = <feature selector>, wIndex = 0|<interface>|<endpoint>,
// wLength = 0
#define USB_REQUEST_SET_INTERFACE 11
// wValue = <alternate setting>, wIndex = <interface>, wLength = 0
#define USB_REQUEST_SYNCH_FRAME 12
// wValue = 0, wIndex = <endpoint>, wLength = 2
#define USB_EPR_STAT_TX_DISABLED 0x00
#define USB_EPR_STAT_TX_STALL USB_EP0R_STAT_TX_0
#define USB_EPR_STAT_TX_NAK USB_EP0R_STAT_TX_1
#define USB_EPR_STAT_TX_VALID (USB_EP0R_STAT_TX_0 \
| USB_EP0R_STAT_TX_1)
#define USB_EPR_STAT_RX_DISABLED 0x00
#define USB_EPR_STAT_RX_STALL USB_EP0R_STAT_RX_0
#define USB_EPR_STAT_RX_NAK USB_EP0R_STAT_RX_1
#define USB_EPR_STAT_RX_VALID (USB_EP0R_STAT_RX_0 \
| USB_EP0R_STAT_RX_1)
#define USB_EPR_EP_TYPE_BULK 0x00
#define USB_EPR_EP_TYPE_CONTROL USB_EP0R_EP_TYPE_0
#define USB_EPR_EP_TYPE_ISO USB_EP0R_EP_TYPE_1
#define USB_EPR_EP_TYPE_INTERRUPT (USB_EP0R_EP_TYPE_0 \
| USB_EP0R_EP_TYPE_1)
#define USB_PMA_ADDR 0x40006000UL
#define USB_BTABLE_OFFSET 0x00
#define USB_EP_RXCOUNT_BL_SIZE (1 << 15)
typedef struct
{
volatile union
{
volatile uint16_t ADDR_TX;
volatile uint16_t ADDR_RX_0;
volatile uint16_t ADDR_TX_0;
};
volatile uint16_t rsvd1;
volatile union
{
volatile uint16_t COUNT_TX;
volatile uint16_t COUNT_RX_0;
volatile uint16_t COUNT_TX_0;
};
volatile uint16_t rsvd2;
volatile union
{
volatile uint16_t ADDR_RX;
volatile uint16_t ADDR_RX_1;
volatile uint16_t ADDR_TX_1;
};
volatile uint16_t rsvd3;
volatile union
{
volatile uint16_t COUNT_RX;
volatile uint16_t COUNT_RX_1;
volatile uint16_t COUNT_TX_1;
};
volatile uint16_t rsvd4;
} __attribute__((packed, aligned(4))) USB_BufferTableEntry_t;
typedef struct
{
uint8_t bmRequestType;
uint8_t bRequest;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
} __attribute__((packed, aligned(2))) USB_SetupPacket_t;
#define USB_BTABLE_ENTRIES \
((volatile USB_BufferTableEntry_t*)(USB_PMA_ADDR + USB_BTABLE_OFFSET))
typedef void (*USB_PacketHandler_t)(int length);
extern USB_PacketHandler_t USB_EP0OutPacketHandler;
void USB_Init(void);