File content as of revision 3:a3872f7593e2:

// Simple USBHost for FRDM-KL46Z
#include "USBHost.h"
#include <algorithm>

template <bool>struct CtAssert;
template <>struct CtAssert<true> {};
#define CTASSERT(A) CtAssert<A>();


#ifdef _USB_DBG
#define USB_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\n");} while(0);
#define USB_DBG2(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\n");} while(0);
#define USB_DBG_HEX(A,B) debug_hex(A,B)
#define USB_DBG_ERRSTAT() report.print_errstat();
void debug_hex(uint8_t* buf, int size);
#else
#define USB_DBG(...) while(0)
#define USB_DBG2(...) while(0)
#define USB_DBG_HEX(A,B) while(0)
#define USB_DBG_ERRSTAT() while(0)
#endif

#define USB_TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
#define USB_TEST_ASSERT_FALSE(A) USB_TEST_ASSERT(!(A))

#define USB_INFO(...) do{fprintf(stderr,__VA_ARGS__);}while(0);

USBHost* USBHost::inst = NULL;

USBHost* USBHost::getHostInst()
{
    if (inst == NULL) {
        inst = new USBHost();
        inst->init();
    }
    return inst;
}

USBHost::USBHost() {
}

/* virtual */ bool USBHost::enumeration() {
    uint8_t desc[64];
    MaxPacketSize0 = 8;
    dev_addr = 0;
    USB0->ADDR = (lowSpeed ? USB_ADDR_LSEN_MASK : 0x00) | USB_ADDR_ADDR(dev_addr);
    wait_ms(100);
    SETUP_PACKET setup_get_descriptor = {0x80, GET_DESCRIPTOR, 1<<8, 0, 0};
    int result = ControlRead(&setup_get_descriptor, desc, 8);
    if (result < 8) {
        USB_DBG("result=%d %02x", result, LastStatus);
        USB_DBG_ERRSTAT();
        return false;
    }
    USB_DBG_HEX(desc, result);
    USB_DBG_ERRSTAT();
    DeviceDescriptor* dev_desc = reinterpret_cast<DeviceDescriptor*>(desc);
    MaxPacketSize0 = dev_desc->bMaxPacketSize;

    SETUP_PACKET setup_set_address = {0x00, SET_ADDRESS, 1, 0, 0};
    result = ControlWrite(&setup_set_address);
    if (result < 0) {
        USB_DBG("result=%d %02x", result, LastStatus);
        USB_DBG_ERRSTAT();
        return false;
    }
    wait_ms(100);
    dev_addr = 1;

    result = ControlRead(&setup_get_descriptor, desc, sizeof(desc));
    if (result < 8) {
        USB_DBG("result=%d", result);
        USB_DBG_ERRSTAT();
        return false;
    }
    USB_DBG_HEX(desc, result);
    USB_DBG_ERRSTAT();

    USB_INFO("VID: %04x, PID: %04x\n", dev_desc->idVendor, dev_desc->idProduct);
    if (dev_desc->bDeviceClass == HUB_CLASS) {
        USB_INFO("USB hub not supported.\n\n");
        exit(1);
    }

    setup_get_descriptor.wValue = 2<<8; // config descriptor
    result = ControlRead(&setup_get_descriptor, desc, 4);
    if (result != 4) {
        USB_DBG("result=%d", result);
        USB_DBG_ERRSTAT();
        return false;
    }
    USB_DBG_HEX(desc, 4);
    USB_DBG_ERRSTAT();

    int TotalLength = desc[2]|desc[3]<<8;
    uint8_t* buf = new uint8_t[TotalLength];
    result = ControlRead(&setup_get_descriptor, buf, TotalLength);
    if (result != TotalLength) {
        USB_DBG("result=%d TotalLength=%d %02x", result, TotalLength, LastStatus);
        USB_DBG_ERRSTAT();
        return false;
    }
    USB_DBG_HEX(buf, TotalLength);
    USB_DBG_ERRSTAT();

    for(int i = 0; i < TotalLength; ) {
        int Length = buf[i];
        uint8_t DescriptorType = buf[i+1];
        if (DescriptorType == 0x05) { // endpoint
            EndpointDescriptor* desc = reinterpret_cast<EndpointDescriptor*>(buf+i);
            USBEndpoint* ep = NULL;
            if (desc->bmAttributes == 0x03) { // interrupt
                if (desc->bEndpointAddress & 0x80) {
                    ep = &ep_int_in;
                }
            } else if (desc->bmAttributes == 0x02) { // bulk
                ep = (desc->bEndpointAddress & 0x80) ? &ep_bulk_in : &ep_bulk_out;
            }
            if (ep) {
                ep->setAddress(desc->bEndpointAddress);
                ep->setSize(desc->wMaxPacketSize);
            }
        }
        USB_DBG_HEX(buf+i, Length);
        i += Length;
    }
    delete[] buf;

    // config = 1
    SETUP_PACKET setup_set_config = {0x00, SET_CONFIGURATION, 1, 0, 0};
    result = ControlWrite(&setup_set_config);
    if (result < 0) {
        USB_DBG("set config: %02x", LastStatus);
        USB_DBG_ERRSTAT();
        if (lowSpeed && LastStatus == STALL) { // TODO:
            wait_ms(100);
            return true;
        }
        return false;
    }
    wait_ms(100);
    return true;
}

USB_TYPE USBHost::controlRead(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
    SETUP_PACKET setup = {requestType, request, value, index};
    int result = ControlRead(&setup, buf, len);
    USB_DBG2("result=%d %02x", result, LastStatus);
    return (result >= 0) ? USB_TYPE_OK : USB_TYPE_ERROR;
}

USB_TYPE USBHost::controlWrite(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
    SETUP_PACKET setup = {requestType, request, value, index};
    int result = ControlWrite(&setup, buf, len);
    if (result >= 0) {
        return USB_TYPE_OK;
    }
    USB_DBG("result=%d %02x", result, LastStatus);
    USB_DBG_ERRSTAT();
    USB_DBG_HEX(buf, len);
    return USB_TYPE_ERROR;
}

USB_TYPE USBHost::bulkRead(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking) {
    USB_TEST_ASSERT(blocking);
    int result = BulkRead(buf, len);
    if (result >= 0) {
        return USB_TYPE_OK;
    }
    //USB_DBG2("result=%d %02x", result, host->LastStatus);
    return USB_TYPE_ERROR;
}

USB_TYPE USBHost::bulkWrite(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking) {
    USB_TEST_ASSERT(blocking);
    int result = BulkWrite(buf, len);
    if (result >= 0) {
        return USB_TYPE_OK;
    }
    USB_DBG2("result=%d %02x", result, LastStatus);
    return USB_TYPE_ERROR;
}

USB_TYPE USBHost::interruptWrite(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking) {
    USB_TEST_ASSERT(blocking);
    int result = InterruptRead(buf, len);
    if (result >= 0) {
        return USB_TYPE_OK;
    }
    return USB_TYPE_ERROR;
}

int USBHost::ControlRead(SETUP_PACKET* setup, uint8_t* data, int size) {
    setAddr(dev_addr);
    token_setup(setup, size); // setup stage
    if (LastStatus != ACK) {
        USB_DBG("setup %02x", LastStatus);
        return -1;
    }
    int read_len = 0;
    while(read_len < size) {
        int size2 = std::min(size-read_len, MaxPacketSize0);
        int result = token_in(0, data+read_len, size2);
        //USB_DBG("token_in result=%d %02x", result, LastStatus);
        if (result < 0) {
            USB_DBG("token_in %d/%d %02x", read_len, size, LastStatus);
            return result;
        }
        read_len += result;
        if (result < MaxPacketSize0) {
            break;
        }
    }    
    int result = token_out(0); // status stage
    if (result < 0) {
        USB_DBG("status token_out %02x", LastStatus);
        if (LastStatus == STALL) {
            return read_len;
        }
        return result;
    }
    return read_len;
}

int USBHost::ControlWrite(SETUP_PACKET* setup, uint8_t* data, int size) {
    setAddr(dev_addr);
    token_setup(setup, size); // setup stage
    if (LastStatus != ACK) {
        USB_DBG("setup %02x", LastStatus);
        return -1;
    }
    int write_len = 0;
    if (data != NULL) {
        write_len = token_out(0, data, size);
        if (write_len < 0) {
            return -1;
        }
    }
    int result = token_in(0); // status stage
    if (result < 0) {
        USB_DBG("result=%d %02x", result, LastStatus);
        //return result;
    }
    return write_len;
}

int USBHost::InterruptRead(uint8_t* data, int size) {
    setAddr(dev_addr);
    setEndpoint();
    const int retryLimit = 0;
    int max_packet_size = ep_int_in.getSize();
    int read_len = 0;
    for(int n = 0; read_len < size; n++) {
        int size2 = std::min(size-read_len, max_packet_size);
        int result = token_in(ep_int_in.getAddress() & 0x7f, data+read_len, size2, retryLimit);
        if (result < 0) {
            if (LastStatus == NAK) {
                if (n == 0) {
                    return -1;
                }
                break;
            }
            USB_DBG("token_in result=%d %02x", result, LastStatus);
            return result;
        }
        read_len += result;
        if (result < max_packet_size) {
            break;
        }
    }
    return read_len;
}

int USBHost::BulkRead(uint8_t* data, int size, int timeout_ms) {
    setAddr(dev_addr);
    setEndpoint();
    int max_packet_size = ep_bulk_in.getSize();
    int retryLimit = (timeout_ms == 0) ? 0 : 10;
    int read_len = 0;
    Timer t;
    for(int n = 0; read_len < size; n++) {
        int size2 = std::min(size-read_len, max_packet_size);
        int result = token_in(ep_bulk_in.getAddress() & 0x7f, data+read_len, size2, retryLimit);
        if (result < 0) {
            if (LastStatus == NAK) {
                if (n == 0) {
                    return -1;
                }
                break;
            }
            USB_DBG("token_in result=%d %02x", result, LastStatus);
            return result;
        }
        read_len += result;
        if (result < max_packet_size) {
            break;
        }
        if (timeout_ms > 0 && t.read_ms() > timeout_ms) {
            USB_DBG("timeout_ms: %d", timeout_ms);
            break;
        }
    }
    return read_len;
}

int USBHost::BulkWrite(const uint8_t* data, int size) {
    setAddr(dev_addr);
    setEndpoint();
    int max_packet_size = ep_bulk_out.getSize();
    int write_len = 0;
    for(int n = 0; write_len < size; n++) {
        int size2 = std::min(size-write_len, max_packet_size);
        int result = token_out(ep_bulk_out.getAddress(), data+write_len, size2);
        if (result < 0) {
            if (LastStatus == NAK) {
                if (n == 0) {
                    return -1;
                }
                break;
            }
            //USB_DBG("token_in result=%d %02x", result, LastStatus);
            return result;
        }
        write_len += result;
        if (result < max_packet_size) {
            break;
        }
    }
    return write_len;
}