Adaptation of the official mbed USBHost repository to work with the LPC4088 Display Module
Dependents: DMSupport DMSupport DMSupport DMSupport
Fork of DM_USBHost by
USBHost3GModule/WANDongleSerialPort.cpp
- Committer:
- mbed_official
- Date:
- 2013-10-16
- Revision:
- 17:c7b1b8451598
- Child:
- 18:37c948cf0dbf
File content as of revision 17:c7b1b8451598:
/* Copyright (c) 2010-2012 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "USBHostConf.h" #ifdef USBHOST_3GMODULE #define __DEBUG__ 0 #ifndef __MODULE__ #define __MODULE__ "WANDongleSerialPort.cpp" #endif #include "core/dbg.h" #include <cstdint> #include "rtos.h" #include "WANDongleSerialPort.h" WANDongleSerialPort::WANDongleSerialPort() : cb_tx_en(false), cb_rx_en(false), listener(NULL) { reset(); } void WANDongleSerialPort::init(USBHost* pHost) { host = pHost; } void WANDongleSerialPort::reset() { tx_mtx.lock(); rx_mtx.lock(); bulk_in = NULL; bulk_out = NULL; buf_out_len = 0; max_out_size = 0; lock_tx = false; cb_tx_pending = false; buf_in_len = 0; buf_in_read_pos = 0; lock_rx = false; cb_rx_pending = false; tx_mtx.unlock(); rx_mtx.unlock(); } int WANDongleSerialPort::readPacket() { DBG("Read packet on %p", this); rx_mtx.lock(); if(lock_rx) { ERR("Fail"); rx_mtx.unlock(); return -1; } if( bulk_in == NULL ) { WARN("Port is disconnected"); rx_mtx.unlock(); return -1; } lock_rx = true; //Receiving rx_mtx.unlock(); // DBG("readPacket"); //lock_rx.lock(); USB_TYPE res = host->bulkRead(dev, (USBEndpoint *)bulk_in, buf_in, ((USBEndpoint *)bulk_in)->getSize(), false); //Queue transfer if(res != USB_TYPE_PROCESSING) { //lock_rx.unlock(); ERR("host->bulkRead() returned %d", res); Thread::wait(100); return -1; } return 0; } int WANDongleSerialPort::writePacket() { tx_mtx.lock(); if(lock_tx) { ERR("Fail"); tx_mtx.unlock(); return -1; } if( bulk_out == NULL ) { WARN("Port is disconnected"); tx_mtx.unlock(); return -1; } lock_tx = true; //Transmitting tx_mtx.unlock(); // DBG("writePacket"); //lock_tx.lock(); USB_TYPE res = host->bulkWrite(dev, (USBEndpoint *)bulk_out, buf_out, buf_out_len, false); //Queue transfer if(res != USB_TYPE_PROCESSING) { //lock_tx.unlock(); ERR("host->bulkWrite() returned %d", res); Thread::wait(100); return -1; } return 0; } int WANDongleSerialPort::putc(int c) { tx_mtx.lock(); if(!lock_tx) { if(buf_out_len < max_out_size) { buf_out[buf_out_len] = (uint8_t)c; buf_out_len++; } } else { ERR("CAN'T WRITE!"); } tx_mtx.unlock(); return c; } int WANDongleSerialPort::getc() { rx_mtx.lock(); int c = 0; if(!lock_rx) { if(buf_in_read_pos < buf_in_len) { c = (int)buf_in[buf_in_read_pos]; buf_in_read_pos++; } } else { ERR("CAN'T READ!"); } rx_mtx.unlock(); return c; } int WANDongleSerialPort::readable() { rx_mtx.lock(); if (lock_rx) { rx_mtx.unlock(); return 0; } /* if( !lock_rx.trylock() ) { return 0; }*/ int res = buf_in_len - buf_in_read_pos; //lock_rx.unlock(); rx_mtx.unlock(); return res; } int WANDongleSerialPort::writeable() { tx_mtx.lock(); if (lock_tx) { tx_mtx.unlock(); return 0; } /*if( !lock_tx.trylock() ) { return 0; }*/ int res = max_out_size - buf_out_len; tx_mtx.unlock(); //lock_tx.unlock(); return res; } void WANDongleSerialPort::attach(IUSBHostSerialListener* pListener) { if(pListener == NULL) { setupIrq(false, RxIrq); setupIrq(false, TxIrq); } listener = pListener; if(pListener != NULL) { setupIrq(true, RxIrq); setupIrq(true, TxIrq); } } void WANDongleSerialPort::setupIrq(bool en, IrqType irq /*= RxIrq*/) { switch(irq) { case RxIrq: rx_mtx.lock(); cb_rx_en = en; if(en && cb_rx_pending) { cb_rx_pending = false; rx_mtx.unlock(); listener->readable(); //Process the interrupt that was raised } else { rx_mtx.unlock(); } break; case TxIrq: tx_mtx.lock(); cb_tx_en = en; if(en && cb_tx_pending) { cb_tx_pending = false; tx_mtx.unlock(); listener->writeable(); //Process the interrupt that was raised } else { tx_mtx.unlock(); } break; } } void WANDongleSerialPort::connect( USBDeviceConnected* pDev, USBEndpoint* pInEp, USBEndpoint* pOutEp ) { dev = pDev; bulk_in = pInEp; bulk_out = pOutEp; max_out_size = bulk_out->getSize(); if( max_out_size > WANDONGLE_MAX_OUTEP_SIZE ) { max_out_size = WANDONGLE_MAX_OUTEP_SIZE; } bulk_in->attach(this, &WANDongleSerialPort::rxHandler); bulk_out->attach(this, &WANDongleSerialPort::txHandler); readPacket(); //Start receiving data } void WANDongleSerialPort::disconnect( ) { reset(); } //Private methods void WANDongleSerialPort::rxHandler() { if (((USBEndpoint *) bulk_in)->getState() == USB_TYPE_IDLE) //Success { buf_in_read_pos = 0; buf_in_len = ((USBEndpoint *) bulk_in)->getLengthTransferred(); //Update length //lock_rx.unlock(); rx_mtx.lock(); lock_rx = false; //Transmission complete if(cb_rx_en) { rx_mtx.unlock(); listener->readable(); //Call handler from the IRQ context //readPacket() should be called by the handler subsequently once the buffer has been emptied } else { cb_rx_pending = true; //Queue the callback rx_mtx.unlock(); } } else //Error, try reading again { //lock_rx.unlock(); DBG("Trying again"); readPacket(); } } void WANDongleSerialPort::txHandler() { if (((USBEndpoint *) bulk_out)->getState() == USB_TYPE_IDLE) //Success { tx_mtx.lock(); buf_out_len = 0; //Reset length lock_tx = false; //Transmission complete //lock_tx.unlock(); if(cb_tx_en) { tx_mtx.unlock(); listener->writeable(); //Call handler from the IRQ context //writePacket() should be called by the handler subsequently once the buffer has been filled } else { cb_tx_pending = true; //Queue the callback tx_mtx.unlock(); } } else //Error, try reading again { //lock_tx.unlock(); writePacket(); } } #endif /* USBHOST_3GMODULE */