Diff: USBHost/USBHost.cpp

Revision:

0:148fca6fd246

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost/USBHost.cpp	Fri Apr 25 05:18:55 2014 +0000
@@ -0,0 +1,317 @@
+/* mbed USBHost Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "USBHost.h"
+#define USB_DEBUG
+#include "BaseUsbHostDebug.h"
+#define TEST
+#include "BaseUsbHostTest.h"
+
+USBHost* USBHost::inst = NULL;
+
+USBHost* USBHost::getHostInst() {
+    if (inst == NULL) {
+        inst = new USBHost();
+        inst->init();
+    }
+    return inst;
+}
+
+void USBHost::poll()
+{
+    if (inst) {
+        inst->task();
+    }
+}
+
+USBHost::USBHost() {
+}
+
+/* virtual */ bool USBHost::addDevice(USBDeviceConnected* parent, int port, bool lowSpeed) {
+    USBDeviceConnected* dev = new USBDeviceConnected;
+    USBEndpoint* ep = new USBEndpoint(dev);
+    dev->init(0, port, lowSpeed);
+    dev->setAddress(0);
+    dev->setEpCtl(ep);
+    uint8_t desc[18];
+    wait_ms(100);
+
+    int rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 1<<8, 0, desc, 8);
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    if (rc != USB_TYPE_OK) {
+        USB_ERR("ADD DEVICE FAILD");
+    }
+    USB_DBG_HEX(desc, 8);
+    DeviceDescriptor* dev_desc = reinterpret_cast<DeviceDescriptor*>(desc);
+    ep->setSize(dev_desc->bMaxPacketSize);
+
+    int new_addr = USBDeviceConnected::getNewAddress();
+    rc = controlWrite(dev, 0x00, SET_ADDRESS, new_addr, 0, NULL, 0);
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    dev->setAddress(new_addr);
+    wait_ms(100);
+
+    rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 1<<8, 0, desc, sizeof(desc));
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    USB_DBG_HEX(desc, sizeof(desc));
+
+    dev->setVid(dev_desc->idVendor);
+    dev->setPid(dev_desc->idProduct);
+    dev->setClass(dev_desc->bDeviceClass);
+    USB_INFO("parent:%p port:%d speed:%s VID:%04x PID:%04x class:%02x addr:%d",
+        parent, port, (lowSpeed ? "low " : "full"), dev->getVid(), dev->getPid(), dev->getClass(),
+        dev->getAddress());
+
+    DeviceLists.push_back(dev);
+
+    if (dev->getClass() == HUB_CLASS) {
+        const int config = 1;
+        int rc = controlWrite(dev, 0x00, SET_CONFIGURATION, config, 0, NULL, 0);
+        USB_TEST_ASSERT(rc == USB_TYPE_OK);
+        wait_ms(100);
+        Hub(dev);
+    }
+    return true;
+}
+
+// enumerate a device with the control USBEndpoint
+USB_TYPE USBHost::enumerate(USBDeviceConnected * dev, IUSBEnumerator* pEnumerator)
+{
+    if (dev->getClass() == HUB_CLASS) { // skip hub class
+        return USB_TYPE_OK;
+    }
+    uint8_t desc[18];
+    USB_TYPE rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 1<<8, 0, desc, sizeof(desc));
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    USB_DBG_HEX(desc, sizeof(desc));
+    if (rc != USB_TYPE_OK) {
+        return rc;
+    }
+    DeviceDescriptor* dev_desc = reinterpret_cast<DeviceDescriptor*>(desc);
+    dev->setClass(dev_desc->bDeviceClass);
+    pEnumerator->setVidPid(dev->getVid(), dev->getPid());
+
+    rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 2<<8, 0, desc, 4);
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    USB_DBG_HEX(desc, 4);
+
+    int TotalLength = desc[2]|desc[3]<<8;
+    uint8_t* buf = new uint8_t[TotalLength];
+    rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 2<<8, 0, buf, TotalLength);
+    USB_TEST_ASSERT(rc == USB_TYPE_OK);
+    //USB_DBG_HEX(buf, TotalLength);
+
+    // Parse the configuration descriptor
+    parseConfDescr(dev, buf, TotalLength, pEnumerator);
+    delete[] buf;
+    // only set configuration if not enumerated before
+    if (!dev->isEnumerated()) {
+        USB_DBG("Set configuration 1 on dev: %p", dev);
+        // sixth step: set configuration (only 1 supported)
+        int config = 1;
+        USB_TYPE res = controlWrite(dev, 0x00, SET_CONFIGURATION, config, 0, NULL, 0);
+        if (res != USB_TYPE_OK) {
+            USB_ERR("SET CONF FAILED");
+            return res;
+        }
+        // Some devices may require this delay
+        wait_ms(100);
+        dev->setEnumerated();
+        // Now the device is enumerated!
+        USB_DBG("dev %p is enumerated", dev);
+    }
+    return USB_TYPE_OK;
+}
+
+// this method fills the USBDeviceConnected object: class,.... . It also add endpoints found in the descriptor.
+void USBHost::parseConfDescr(USBDeviceConnected * dev, uint8_t * conf_descr, uint32_t len, IUSBEnumerator* pEnumerator)
+{
+    uint32_t index = 0;
+    uint32_t len_desc = 0;
+    uint8_t id = 0;
+    USBEndpoint * ep = NULL;
+    uint8_t intf_nb = 0;
+    bool parsing_intf = false;
+    uint8_t current_intf = 0;
+    EndpointDescriptor* ep_desc;
+
+    while (index < len) {
+        len_desc = conf_descr[index];
+        id = conf_descr[index+1];
+        USB_DBG_HEX(conf_descr+index, len_desc);
+        switch (id) {
+            case CONFIGURATION_DESCRIPTOR:
+                USB_DBG("dev: %p has %d intf", dev, conf_descr[4]);
+                dev->setNbIntf(conf_descr[4]);
+                break;
+            case INTERFACE_DESCRIPTOR:
+                if(pEnumerator->parseInterface(conf_descr[index + 2], conf_descr[index + 5], conf_descr[index + 6], conf_descr[index + 7])) {
+                    intf_nb++;
+                    current_intf = conf_descr[index + 2];
+                    dev->addInterface(current_intf, conf_descr[index + 5], conf_descr[index + 6], conf_descr[index + 7]);
+                    USB_DBG("ADD INTF %d on device %p: class: %d, subclass: %d, proto: %d", current_intf, dev, conf_descr[index + 5],conf_descr[index + 6],conf_descr[index + 7]);
+                    parsing_intf = true;
+                } else {
+                    parsing_intf = false;
+                }
+                break;
+            case ENDPOINT_DESCRIPTOR:
+                ep_desc = reinterpret_cast<EndpointDescriptor*>(conf_descr+index);
+                if (parsing_intf && (intf_nb <= MAX_INTF) ) {
+                    ENDPOINT_TYPE type = (ENDPOINT_TYPE)(ep_desc->bmAttributes & 0x03);
+                    ENDPOINT_DIRECTION dir = (ep_desc->bEndpointAddress & 0x80) ? IN : OUT;
+                    if(pEnumerator->useEndpoint(current_intf, type, dir)) {
+                        ep = new USBEndpoint(dev);
+                        ep->init(type, dir, ep_desc->wMaxPacketSize, ep_desc->bEndpointAddress);
+                        USB_DBG("ADD USBEndpoint %p, on interf %d on device %p", ep, current_intf, dev);
+                        dev->addEndpoint(current_intf, ep);
+                    }
+                }
+                break;
+            case HID_DESCRIPTOR:
+                //lenReportDescr = conf_descr[index + 7] | (conf_descr[index + 8] << 8);
+                break;
+            default:
+                break;
+        }
+        index += len_desc;
+    }
+}
+
+USB_TYPE USBHost::controlRead(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
+    USBEndpoint* ep = dev->getEpCtl();
+    return controlRead(ep, requestType, request, value, index, buf, len);
+}
+
+USB_TYPE USBHost::controlWrite(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
+    USBEndpoint* ep = dev->getEpCtl();
+    return controlWrite(ep, requestType, request, value, index, buf, len);
+}
+
+USB_TYPE USBHost::controlRead(USBEndpoint* ep, 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, len);
+    int result = token_setup(ep, &setup, len); // setup stage
+    if (result < 0) {
+        return USB_TYPE_ERROR;
+    }
+
+    result = token_in(ep, buf, len); // data stage
+    if (result < 0) {
+        return USB_TYPE_ERROR;
+    }
+    int read_len = result;
+
+    ep->m_pED->setToggleDATA1();
+    result = token_out(ep); // status stage
+    if (result < 0) {
+        return USB_TYPE_ERROR;
+    }
+    ep->setLengthTransferred(read_len);
+    return USB_TYPE_OK;
+}
+
+USB_TYPE USBHost::controlWrite(USBEndpoint* ep, 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, len);
+    int result = token_setup(ep, &setup, len); // setup stage
+    if (result < 0) {
+        return USB_TYPE_ERROR;
+    }
+    int write_len = 0;
+    if (buf != NULL) {
+        result = token_out(ep, buf, len); // data stage
+        if (result < 0) {
+            return USB_TYPE_ERROR;
+        }
+        write_len = result;
+    }
+    ep->m_pED->setToggleDATA1();
+    result = token_in(ep); // status stage
+    if (result < 0) {
+        return USB_TYPE_ERROR;
+    }
+    ep->setLengthTransferred(write_len);
+    return USB_TYPE_OK;
+}
+
+USB_TYPE USBHost::bulkRead(USBDeviceConnected* dev, USBEndpoint* ep, uint8_t* buf, uint32_t len, bool blocking) {
+    if (!blocking) {
+        ep->setBuffer(buf, len);
+        ep_queue.push(ep);
+        token_inNB(ep, buf, len);
+        return USB_TYPE_PROCESSING;
+    }
+    int result = token_in(ep, buf, len);
+    if (result >= 0) {
+        ep->setLengthTransferred(result);
+        return USB_TYPE_OK;
+    }
+    return USB_TYPE_ERROR;
+}
+
+USB_TYPE USBHost::bulkWrite(USBDeviceConnected * dev, USBEndpoint* ep, uint8_t * buf, uint32_t len, bool blocking)
+{
+    int result = token_out(ep, buf, len);
+    if (result >= 0) {
+        ep->setLengthTransferred(result);
+        return USB_TYPE_OK;
+    }    
+    return USB_TYPE_ERROR;
+}
+
+USB_TYPE USBHost::interruptRead(USBDeviceConnected * dev, USBEndpoint* ep, uint8_t* buf, uint32_t len, bool blocking) {
+    if (!blocking) {
+        ep->setBuffer(buf, len);
+        ep_queue.push(ep);
+        token_inNB(ep, buf, len);
+        return USB_TYPE_PROCESSING;
+    }
+    int result = token_in(ep, buf, len);
+    if (result >= 0) {
+        ep->setLengthTransferred(result);
+        return USB_TYPE_OK;
+    }
+    return USB_TYPE_ERROR;
+}
+
+int USBHost::interruptReadNB(USBEndpoint* ep, uint8_t* data, int size) {
+    if (ep->getState() != USB_TYPE_PROCESSING) {
+        ep->setState(USB_TYPE_PROCESSING);
+        ep->setBuffer(data, size);
+        token_inNB(ep, data, size);
+    }
+    if (token_inNB_result(ep) != USB_TYPE_PROCESSING) {
+        return ep->getLengthTransferred();
+    }
+    return -1;
+}
+
+int USBHost::bulkReadNB(USBEndpoint*ep, uint8_t* data, int size) {
+    return interruptReadNB(ep, data, size);
+}
+
+void USBHost::task() {
+    USBEndpoint* ep = ep_queue.pop();
+    if (ep) {
+        if (token_inNB_result(ep) == USB_TYPE_OK) {
+            ep->call();
+        } else {
+            ep_queue.push(ep);
+        }
+    }
+}
+