Used in Live Traffic Update Nokia LCD Display Project
Fork of NetServices by
drv/serial/usb/UsbSerial.cpp
- Committer:
- segundo
- Date:
- 2010-11-09
- Revision:
- 0:ac1725ba162c
File content as of revision 0:ac1725ba162c:
/* Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) 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 "rpc.h" #include "UsbSerial.h" //#define __DEBUG #include "dbg/dbg.h" #include "netCfg.h" #if NET_USB_SERIAL namespace mbed { #define BUF_LEN 64 #define FLUSH_TMOUT 100000 //US UsbSerial::UsbSerial(UsbDevice* pDevice, int epIn, int epOut, const char* name /*= NULL*/) : Stream(name), m_epIn(pDevice, epIn, true, USB_BULK, BUF_LEN), m_epOut(pDevice, epOut, false, USB_BULK, BUF_LEN), m_pInCbItem(NULL), m_pInCbMeth(NULL), m_pOutCbItem(NULL), m_pOutCbMeth(NULL) { m_inBufEven = new char[BUF_LEN]; m_inBufOdd = new char[BUF_LEN]; m_pInBufPos = m_inBufUsr = m_inBufEven; m_inBufTrmt = m_inBufOdd; m_outBufEven = new char[BUF_LEN]; m_outBufOdd = new char[BUF_LEN]; m_pOutBufPos = m_outBufUsr = m_outBufEven; m_outBufTrmt = m_outBufOdd; m_inBufLen = m_outBufLen = 0; DBG("Starting RX'ing on in ep\n"); m_timeout = false; m_epIn.setOnCompletion(this, &UsbSerial::onEpInTransfer); m_epOut.setOnCompletion(this, &UsbSerial::onEpOutTransfer); startRx(); } UsbSerial::~UsbSerial() { delete[] m_inBufEven; delete[] m_inBufOdd; delete[] m_outBufEven; delete[] m_outBufOdd; } void UsbSerial::baud(int baudrate) { // } void UsbSerial::format(int bits, int parity, int stop) { // } #if 0 //For doc only template <class T> void attach(T* pCbItem, void (T::*pCbMeth)()) { m_pCbItem = (CDummy*) pCbItem; m_pCbMeth = (void (CDummy::*)()) pCbMeth; } #endif int UsbSerial::_getc() { NVIC_DisableIRQ(US_TICKER_TIMER_IRQn); NVIC_DisableIRQ(USB_IRQn); char c; c = *m_pInBufPos; m_pInBufPos++; NVIC_EnableIRQ(USB_IRQn); NVIC_EnableIRQ(US_TICKER_TIMER_IRQn); return c; } int UsbSerial::_putc(int c) { NVIC_DisableIRQ(US_TICKER_TIMER_IRQn); NVIC_DisableIRQ(USB_IRQn); if( (m_pOutBufPos - m_outBufUsr) < BUF_LEN ) { *m_pOutBufPos = (char) c; m_pOutBufPos++; } else { DBG("NO WAY!!!\n"); } #if 1 if( (m_pOutBufPos - m_outBufUsr) >= BUF_LEN ) //Must flush { if(m_timeout) m_txTimeout.detach(); startTx(); } else { /*if(m_timeout) m_txTimeout.detach(); m_timeout = true; m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT);*/ if(!m_timeout) { m_timeout = true; m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); } } #endif //startTx(); NVIC_EnableIRQ(USB_IRQn); NVIC_EnableIRQ(US_TICKER_TIMER_IRQn); return c; } int UsbSerial::readable() { NVIC_DisableIRQ(US_TICKER_TIMER_IRQn); NVIC_DisableIRQ(USB_IRQn); int res; if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) { //DBG("\r\nREADABLE\r\n"); res = true; } else { //DBG("\r\nNOT READABLE\r\n"); startRx(); //Try to swap packets & start another transmission res = ((m_pInBufPos - m_inBufUsr) < m_inBufLen )?true:false; } NVIC_EnableIRQ(USB_IRQn); NVIC_EnableIRQ(US_TICKER_TIMER_IRQn); return (bool)res; } int UsbSerial::writeable() { NVIC_DisableIRQ(US_TICKER_TIMER_IRQn); NVIC_DisableIRQ(USB_IRQn); // DBG("\r\nWRITEABLE???\r\n"); int res = (bool)( (m_pOutBufPos - m_outBufUsr) < BUF_LEN); NVIC_EnableIRQ(USB_IRQn); NVIC_EnableIRQ(US_TICKER_TIMER_IRQn); return res; } void UsbSerial::onReadable() { if(m_pInCbItem && m_pInCbMeth) (m_pInCbItem->*m_pInCbMeth)(); } void UsbSerial::onWriteable() { if(m_pOutCbItem && m_pOutCbMeth) (m_pOutCbItem->*m_pOutCbMeth)(); } void UsbSerial::onEpInTransfer() { int len = m_epIn.status(); DBG("RX transfer completed w len=%d\n",len); startRx(); if(len > 0) onReadable(); } void UsbSerial::onEpOutTransfer() { int len = m_epOut.status(); DBG("TX transfer completed w len=%d\n",len); if(m_timeout) m_txTimeout.detach(); startTx(); if(len > 0) onWriteable(); } void UsbSerial::startTx() { DBG("Transfer>\n"); m_timeout = false; // m_txTimeout.detach(); if(!(m_pOutBufPos - m_outBufUsr)) { DBG("?!?!?\n"); return; } if( m_epOut.status() == USBERR_PROCESSING ) { //Wait & retry //m_timeout = true; //m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); DBG("Ep is busy...\n"); return; } if( m_epOut.status() < 0 ) { DBG("Tx trying again...\n"); m_epOut.transfer((volatile uint8_t*)m_outBufTrmt, m_outBufLen); return; } m_outBufLen = m_pOutBufPos - m_outBufUsr; //Swap buffers volatile char* swapBuf = m_outBufUsr; m_outBufUsr = m_outBufTrmt; m_outBufTrmt = swapBuf; m_epOut.transfer((volatile uint8_t*)m_outBufTrmt, m_outBufLen); m_pOutBufPos = m_outBufUsr; } void UsbSerial::startRx() { if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) { //User buf is not empty, cannot swap now... return; } int len = m_epIn.status(); if( len == USBERR_PROCESSING ) { //Previous transmission not completed return; } if( len < 0 ) { DBG("Rx trying again...\n"); m_epIn.transfer((volatile uint8_t*)m_inBufTrmt, BUF_LEN); //Start another transmission return; } m_inBufLen = len; //Swap buffers volatile char* swapBuf = m_inBufUsr; m_inBufUsr = m_inBufTrmt; m_inBufTrmt = swapBuf; m_pInBufPos = m_inBufUsr; DBG("Starting new transfer\n"); m_epIn.transfer((volatile uint8_t*)m_inBufTrmt, BUF_LEN); //Start another transmission } #ifdef MBED_RPC const struct rpc_method *UsbSerial::get_rpc_methods() { static const rpc_method methods[] = { { "readable", rpc_method_caller<int, UsbSerial, &UsbSerial::readable> }, { "writeable", rpc_method_caller<int, UsbSerial, &UsbSerial::writeable> }, RPC_METHOD_SUPER(Stream) }; return methods; } struct rpc_class *UsbSerial::get_rpc_class() { static const rpc_function funcs[] = { /*{ "new", rpc_function_caller<const char*, UsbDevice*, int, int, const char*, Base::construct<UsbSerial,UsbDevice*,int,int,const char*> > },*/ //RPC is buggy RPC_METHOD_END }; static rpc_class c = { "UsbSerial", funcs, NULL }; return &c; } #endif } // namespace mbed #endif