#pragma once

#include <stm32f3.h>

#define USBPU_port  GPIOA
#define USBPU_pin   (1<<15)
#define USBPU_ON()  pin_clear(USBPU_port, USBPU_pin)
#define USBPU_OFF() pin_set(USBPU_port, USBPU_pin)

// max endpoints number
#define STM32ENDPOINTS          8
/**
 *                 Buffers size definition
 **/
#define USB_BTABLE_SIZE         512
// first 64 bytes of USB_BTABLE are registers!
//#define USB_EP0_BASEADDR        64
// for USB FS EP0 buffers are from 8 to 64 bytes long (64 for PL2303)
#define USB_EP0_BUFSZ           64
// USB transmit buffer size (64 for PL2303)
#define USB_TXBUFSZ             64
// USB receive buffer size (64 for PL2303)
#define USB_RXBUFSZ             64
// EP1 - interrupt - buffer size
#define USB_EP1BUFSZ            8

#define USB_BTABLE_BASE         0x40006000
#define USB                     ((USB_TypeDef *) USB_BASE)

#ifdef USB_BTABLE
#undef USB_BTABLE
#endif
#define USB_BTABLE              ((USB_BtableDef *)(USB_BTABLE_BASE))
#define USB_ISTR_EPID           0x0000000F
#define USB_FNR_LSOF_0          0x00000800
#define USB_FNR_lSOF_1          0x00001000
#define USB_LPMCSR_BESL_0       0x00000010
#define USB_LPMCSR_BESL_1       0x00000020
#define USB_LPMCSR_BESL_2       0x00000040
#define USB_LPMCSR_BESL_3       0x00000080
#define USB_EPnR_CTR_RX         0x00008000
#define USB_EPnR_DTOG_RX        0x00004000
#define USB_EPnR_STAT_RX        0x00003000
#define USB_EPnR_STAT_RX_0      0x00001000
#define USB_EPnR_STAT_RX_1      0x00002000
#define USB_EPnR_SETUP          0x00000800
#define USB_EPnR_EP_TYPE        0x00000600
#define USB_EPnR_EP_TYPE_0      0x00000200
#define USB_EPnR_EP_TYPE_1      0x00000400
#define USB_EPnR_EP_KIND        0x00000100
#define USB_EPnR_CTR_TX         0x00000080
#define USB_EPnR_DTOG_TX        0x00000040
#define USB_EPnR_STAT_TX        0x00000030
#define USB_EPnR_STAT_TX_0      0x00000010
#define USB_EPnR_STAT_TX_1      0x00000020
#define USB_EPnR_EA             0x0000000F
#define USB_COUNTn_RX_BLSIZE    0x00008000
#define USB_COUNTn_NUM_BLOCK    0x00007C00
#define USB_COUNTn_RX           0x0000003F

#define USB_TypeDef USB_TypeDef_custom

typedef struct {
    __IO uint32_t EPnR[STM32ENDPOINTS];
    __IO uint32_t RESERVED[STM32ENDPOINTS];
    __IO uint32_t CNTR;
    __IO uint32_t ISTR;
    __IO uint32_t FNR;
    __IO uint32_t DADDR;
    __IO uint32_t BTABLE;
} USB_TypeDef;

typedef struct{
    __IO uint32_t USB_ADDR_TX;
    __IO uint32_t USB_COUNT_TX;
    __IO uint32_t USB_ADDR_RX;
    __IO uint32_t USB_COUNT_RX;
} USB_EPDATA_TypeDef;

typedef struct{
    __IO USB_EPDATA_TypeDef EP[STM32ENDPOINTS];
} USB_BtableDef;

void USB_setup();
int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, void (*func)());