File content as of revision 3:54f9b5e0d12d:

// USBHostBTstack.cpp
#include "USBHostBTstack.h"

//#define BTSTACK_DEBUG

#ifdef BTSTACK_DEBUG
#define BT_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#define BT_DBG_BYTES(STR,BUF,LEN) _debug_bytes(__PRETTY_FUNCTION__,__LINE__,STR,BUF,LEN)
#else
#define BT_DBG(...)  while(0);
#define BT_DBG_BYTES(S,BUF,LEN) while(0);
#endif

#define HCI_COMMAND_DATA_PACKET 0x01
#define HCI_ACL_DATA_PACKET     0x02
#define HCI_SCO_DATA_PACKET     0x03
#define HCI_EVENT_PACKET        0x04

USBHostBTstack::USBHostBTstack()
{
    host = USBHost::getHostInst();
    m_pCb = NULL;
}

bool USBHostBTstack::connected()
{
    return true;
}

bool USBHostBTstack::connect()
{
    return true;
}

int USBHostBTstack::open()
{
    return 0;
}

int USBHostBTstack::send_packet(uint8_t packet_type, uint8_t* packet, int size)
{
    USB_TYPE res;
    switch(packet_type){
        case HCI_COMMAND_DATA_PACKET:
            BT_DBG_BYTES("HCI_CMD:", packet, size);
            res = host->controlWrite(dev,
                    USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_DEVICE, 
                    0, 0, 0, packet, size);
            TEST_ASSERT(res == USB_TYPE_OK);
            break;
        case HCI_ACL_DATA_PACKET:
            BT_DBG_BYTES("ACL_SND:", packet, size);
            res = host->bulkWrite(dev, bulk_out, packet, size);
            TEST_ASSERT(res == USB_TYPE_OK);
            break;
        default:
            TEST_ASSERT(0);
    }
    return 0;
}

void USBHostBTstack::register_packet_handler(void (*pMethod)(uint8_t, uint8_t*, uint16_t) )
{
    BT_DBG("pMethod: %p", pMethod);
    m_pCb = pMethod;
}

void USBHostBTstack::poll()
{
    int result = host->InterruptRead(int_report, sizeof(int_report));
    if (result >= 0) {
        BT_DBG_BYTES("HCI_EVT:", int_report, result);
        if (m_pCb) {
            m_pCb(HCI_EVENT_PACKET, int_report, result);
        }    
    }
    result = host->BulkRead(bulk_report, sizeof(bulk_report), 0);
    if (result >= 0) {
        BT_DBG_BYTES("HCI_ACL_RECV:", bulk_report, result);
        if (m_pCb) {
            m_pCb(HCI_ACL_DATA_PACKET, bulk_report, result);
        }    
    }
}

void _debug_bytes(const char* pretty, int line, const char* s, uint8_t* buf, int len)
{
    printf("[%s:%d]\n%s", pretty, line, s);
    for(int i = 0; i < len; i++) {
        printf(" %02x", buf[i]);
    }
    printf("\n");
}