File content as of revision 1:c072d9e580b0:

// Simple USBHost for FRDM-KL46Z
#include "mbed.h"
#pragma once

struct SETUP_PACKET {
    uint8_t bmRequestType;
    uint8_t bRequest;
    uint16_t wValue;
    uint16_t wIndex;
    uint16_t wLength;
};

#define SET_ADDRESS 5
#define GET_DESCRIPTOR 6
#define GET_CONFIGURATION 8
#define SET_CONFIGURATION 9

// TOK_PID[5:2]
#define DATA0 0x03
#define DATA1 0x0b
#define ACK   0x02
#define STALL 0x0e
#define NAK   0x0a
#define Bus_Timeout 0x00
#define Data_Error 0x0f

enum ODD_EVEN {
    ODD = 0,
    EVEN = 1,
};

class USBHost {
public:
    static USBHost* getHostInst();
    int InterruptRead(uint8_t* data, int size);
    int ControlRead(SETUP_PACKET* setup, uint8_t* data, int size);
    int ControlWrite(SETUP_PACKET* setup, uint8_t* data = NULL, int size = 0);
    int BulkRead(uint8_t* data, int size);
    int BulkWrite(const uint8_t* data, int size);
    uint8_t LastStatus;

protected:
    USBHost();
    void init();
    void wait_attach();
    bool enumeration();
    uint8_t ep_int_in;
    uint8_t ep_bulk_in;
    uint8_t ep_bulk_out;
    int MaxPacketSize0;
    bool lowSpeed;
    int dev_addr;

private:
    static void _usbisr(void);
    int token_setup(SETUP_PACKET* setup, uint16_t wLength = 0);
    int token_in(uint8_t ep, uint8_t* data = NULL, int size = 0);
    int token_out(uint8_t ep, const uint8_t* data = NULL, int size = 0);
    void token_ready();
    void UsbIrqhandler();
    __IO bool attach_done;
    __IO bool token_done;
    ODD_EVEN tx_ptr;
    ODD_EVEN rx_ptr;
    uint8_t tx_data01[16];
    uint8_t rx_data01[16];
    static USBHost* inst;
};