Adaptation of the official mbed USBHost repository to work with the LPC4088 Display Module
Dependents: DMSupport DMSupport DMSupport DMSupport
Fork of DM_USBHost by
USBHostHub/USBHostHub.cpp
- Committer:
- embeddedartists
- Date:
- 2015-02-17
- Revision:
- 31:9a462d032742
- Parent:
- 28:a55c5a98d5e9
- Child:
- 32:f2d129436056
File content as of revision 31:9a462d032742:
/* 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 "USBHostHub.h" #if MAX_HUB_NB #include "USBHost.h" #include "dbg.h" #define GET_STATUS 0x00 #define CLEAR_FEATURE 0x01 #define GET_STATE 0x02 #define SET_FEATURE 0x03 #define GET_DESCRIPTOR 0x06 #define PORT_CONNECTION_FEATURE (0x00) #define PORT_ENABLE_FEATURE (0x01) #define PORT_RESET_FEATURE (0x04) #define PORT_POWER_FEATURE (0x08) #define C_PORT_CONNECTION_FEATURE (16) #define C_PORT_ENABLE_FEATURE (17) #define C_PORT_RESET_FEATURE (20) #define PORT_CONNECTION (1 << 0) #define PORT_ENABLE (1 << 1) #define PORT_SUSPEND (1 << 2) #define PORT_OVER_CURRENT (1 << 3) #define PORT_RESET (1 << 4) #define PORT_POWER (1 << 8) #define PORT_LOW_SPEED (1 << 9) #define C_PORT_CONNECTION (1 << 16) #define C_PORT_ENABLE (1 << 17) #define C_PORT_SUSPEND (1 << 18) #define C_PORT_OVER_CURRENT (1 << 19) #define C_PORT_RESET (1 << 20) USBHostHub::USBHostHub() { host = NULL; init(); buf = host->getSafeMem(sizeof(HubDescriptor)); } USBHostHub::~USBHostHub() { if (buf != NULL) { host->returnSafeMem(buf); buf = NULL; } } void USBHostHub::init() { dev_connected = false; dev = NULL; int_in = NULL; dev_connected = false; hub_intf = -1; hub_device_found = false; nb_port = 0; hub_characteristics = 0; for (int i = 0; i < MAX_HUB_PORT; i++) { device_children[i] = NULL; } } void USBHostHub::setHost(USBHost * host_) { host = host_; } bool USBHostHub::connected() { return dev_connected; } bool USBHostHub::connect(USBDeviceConnected * dev) { if (dev_connected) { return true; } if(host->enumerate(dev, this)) { init(); return false; } if (hub_device_found) { this->dev = dev; int_in = dev->getEndpoint(hub_intf, INTERRUPT_ENDPOINT, IN); if (!int_in) { init(); return false; } USB_INFO("New HUB: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, hub_intf); dev->setName("Hub", hub_intf); host->registerDriver(dev, hub_intf, this, &USBHostHub::disconnect); int_in->attach(this, &USBHostHub::rxHandler); // get HUB descriptor host->controlRead( dev, USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS, GET_DESCRIPTOR, 0x29 << 8, 0, buf, sizeof(HubDescriptor)); nb_port = buf[2]; hub_characteristics = buf[3]; USB_DBG("Hub has %d port", nb_port); for (uint8_t j = 1; j <= nb_port; j++) { setPortFeature(PORT_POWER_FEATURE, j); } Thread::wait(buf[5]*2); host->interruptRead(dev, int_in, buf, 1, false); dev_connected = true; return true; } return false; } void USBHostHub::disconnect() { init(); } /*virtual*/ void USBHostHub::setVidPid(uint16_t vid, uint16_t pid) { // we don't check VID/PID for MSD driver } /*virtual*/ bool USBHostHub::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed { if ((hub_intf == -1) && (intf_class == HUB_CLASS) && (intf_subclass == 0) && (intf_protocol == 0)) { hub_intf = intf_nb; return true; } return false; } /*virtual*/ bool USBHostHub::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used { if (intf_nb == hub_intf) { if ((type == INTERRUPT_ENDPOINT) && (dir == IN)) { hub_device_found = true; return true; } } return false; } void USBHostHub::deviceConnected(USBDeviceConnected * dev) { device_children[dev->getPort() - 1] = dev; } void USBHostHub::deviceDisconnected(USBDeviceConnected * dev) { device_children[dev->getPort() - 1] = NULL; } void USBHostHub::hubDisconnected() { for (uint8_t i = 0; i < MAX_HUB_PORT; i++) { if (device_children[i] != NULL) { host->freeDevice(device_children[i]); } } } void USBHostHub::rxHandler() { uint32_t status; if (int_in) { if (int_in->getState() == USB_TYPE_IDLE) { for (int port = 1; port <= nb_port; port++) { status = getPortStatus(port); USB_DBG("[hub handler hub: %d] status port %d [hub: %p]: 0x%X", dev->getHub(), port, dev, status); // if connection status has changed if (status & C_PORT_CONNECTION) { if (status & PORT_CONNECTION) { USB_DBG("[hub handler hub: %d - port: %d] new device connected", dev->getHub(), port); host->deviceConnected(dev->getHub() + 1, port, status & PORT_LOW_SPEED, this); } else { USB_DBG("[hub handler hub: %d - port: %d] device disconnected", dev->getHub(), port); host->deviceDisconnected(dev->getHub() + 1, port, this, 0); } clearPortFeature(C_PORT_CONNECTION_FEATURE, port); } if (status & C_PORT_RESET) { clearPortFeature(C_PORT_RESET_FEATURE, port); } if (status & C_PORT_ENABLE) { clearPortFeature(C_PORT_ENABLE_FEATURE, port); } if ((status & PORT_OVER_CURRENT)) { USB_ERR("OVER CURRENT DETECTED\r\n"); clearPortFeature(PORT_OVER_CURRENT, port); host->deviceDisconnected(dev->getHub() + 1, port, this, 0); } } } host->interruptRead(dev, int_in, buf, 1, false); } } void USBHostHub::portReset(uint8_t port) { // reset port uint32_t status; USB_DBG("reset port %d on hub: %p [this: %p]", port, dev, this); setPortFeature(PORT_RESET_FEATURE, port); while(1) { status = getPortStatus(port); if (status & (PORT_ENABLE | PORT_RESET)) break; if (status & PORT_OVER_CURRENT) { USB_ERR("OVER CURRENT DETECTED\r\n"); clearPortFeature(PORT_OVER_CURRENT, port); host->deviceDisconnected(dev->getHub() + 1, port, this, 0); break; } Thread::wait(10); } } void USBHostHub::setPortFeature(uint32_t feature, uint8_t port) { host->controlWrite( dev, USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT, SET_FEATURE, feature, port, NULL, 0); } void USBHostHub::clearPortFeature(uint32_t feature, uint8_t port) { host->controlWrite( dev, USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT, CLEAR_FEATURE, feature, port, NULL, 0); } uint32_t USBHostHub::getPortStatus(uint8_t port) { uint8_t* safe = host->getSafeMem(4); uint32_t st; host->controlRead( dev, USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT, GET_STATUS, 0, port, safe, 4); st = *((uint32_t*)safe); host->returnSafeMem(safe); return st; } #endif