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Dependencies:   mbed

NetServices/drv/serial/usb/UsbSerial.cpp@0:4edb816d21e1, 2015-10-16 (annotated)

Committer:
ICTFBI
Date:
Fri Oct 16 14:28:26 2015 +0000
Revision:
0:4edb816d21e1
Pre-update 16-10-15

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ICTFBI 0:4edb816d21e1 1
ICTFBI 0:4edb816d21e1 2 /*
ICTFBI 0:4edb816d21e1 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
ICTFBI 0:4edb816d21e1 4
ICTFBI 0:4edb816d21e1 5 Permission is hereby granted, free of charge, to any person obtaining a copy
ICTFBI 0:4edb816d21e1 6 of this software and associated documentation files (the "Software"), to deal
ICTFBI 0:4edb816d21e1 7 in the Software without restriction, including without limitation the rights
ICTFBI 0:4edb816d21e1 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ICTFBI 0:4edb816d21e1 9 copies of the Software, and to permit persons to whom the Software is
ICTFBI 0:4edb816d21e1 10 furnished to do so, subject to the following conditions:
ICTFBI 0:4edb816d21e1 11
ICTFBI 0:4edb816d21e1 12 The above copyright notice and this permission notice shall be included in
ICTFBI 0:4edb816d21e1 13 all copies or substantial portions of the Software.
ICTFBI 0:4edb816d21e1 14
ICTFBI 0:4edb816d21e1 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ICTFBI 0:4edb816d21e1 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ICTFBI 0:4edb816d21e1 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ICTFBI 0:4edb816d21e1 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ICTFBI 0:4edb816d21e1 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ICTFBI 0:4edb816d21e1 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ICTFBI 0:4edb816d21e1 21 THE SOFTWARE.
ICTFBI 0:4edb816d21e1 22 */
ICTFBI 0:4edb816d21e1 23
ICTFBI 0:4edb816d21e1 24 #include "rpc.h"
ICTFBI 0:4edb816d21e1 25
ICTFBI 0:4edb816d21e1 26 #include "UsbSerial.h"
ICTFBI 0:4edb816d21e1 27
ICTFBI 0:4edb816d21e1 28 //#define __DEBUG
ICTFBI 0:4edb816d21e1 29 #include "dbg/dbg.h"
ICTFBI 0:4edb816d21e1 30
ICTFBI 0:4edb816d21e1 31 #include "netCfg.h"
ICTFBI 0:4edb816d21e1 32 #if NET_USB_SERIAL
ICTFBI 0:4edb816d21e1 33
ICTFBI 0:4edb816d21e1 34 namespace mbed {
ICTFBI 0:4edb816d21e1 35
ICTFBI 0:4edb816d21e1 36 #define BUF_LEN 64
ICTFBI 0:4edb816d21e1 37 #define FLUSH_TMOUT 100000 //US
ICTFBI 0:4edb816d21e1 38
ICTFBI 0:4edb816d21e1 39 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),
ICTFBI 0:4edb816d21e1 40 m_pInCbItem(NULL), m_pInCbMeth(NULL), m_pOutCbItem(NULL), m_pOutCbMeth(NULL)
ICTFBI 0:4edb816d21e1 41 {
ICTFBI 0:4edb816d21e1 42 m_inBufEven = new char[BUF_LEN];
ICTFBI 0:4edb816d21e1 43 m_inBufOdd = new char[BUF_LEN];
ICTFBI 0:4edb816d21e1 44 m_pInBufPos = m_inBufUsr = m_inBufEven;
ICTFBI 0:4edb816d21e1 45 m_inBufTrmt = m_inBufOdd;
ICTFBI 0:4edb816d21e1 46
ICTFBI 0:4edb816d21e1 47 m_outBufEven = new char[BUF_LEN];
ICTFBI 0:4edb816d21e1 48 m_outBufOdd = new char[BUF_LEN];
ICTFBI 0:4edb816d21e1 49 m_pOutBufPos = m_outBufUsr = m_outBufEven;
ICTFBI 0:4edb816d21e1 50 m_outBufTrmt = m_outBufOdd;
ICTFBI 0:4edb816d21e1 51
ICTFBI 0:4edb816d21e1 52 m_inBufLen = m_outBufLen = 0;
ICTFBI 0:4edb816d21e1 53
ICTFBI 0:4edb816d21e1 54 DBG("Starting RX'ing on in ep\n");
ICTFBI 0:4edb816d21e1 55
ICTFBI 0:4edb816d21e1 56 m_timeout = false;
ICTFBI 0:4edb816d21e1 57
ICTFBI 0:4edb816d21e1 58 m_epIn.setOnCompletion(this, &UsbSerial::onEpInTransfer);
ICTFBI 0:4edb816d21e1 59 m_epOut.setOnCompletion(this, &UsbSerial::onEpOutTransfer);
ICTFBI 0:4edb816d21e1 60
ICTFBI 0:4edb816d21e1 61 startRx();
ICTFBI 0:4edb816d21e1 62 }
ICTFBI 0:4edb816d21e1 63
ICTFBI 0:4edb816d21e1 64 UsbSerial::~UsbSerial()
ICTFBI 0:4edb816d21e1 65 {
ICTFBI 0:4edb816d21e1 66 delete[] m_inBufEven;
ICTFBI 0:4edb816d21e1 67 delete[] m_inBufOdd;
ICTFBI 0:4edb816d21e1 68 delete[] m_outBufEven;
ICTFBI 0:4edb816d21e1 69 delete[] m_outBufOdd;
ICTFBI 0:4edb816d21e1 70 }
ICTFBI 0:4edb816d21e1 71
ICTFBI 0:4edb816d21e1 72 void UsbSerial::baud(int baudrate) {
ICTFBI 0:4edb816d21e1 73 //
ICTFBI 0:4edb816d21e1 74 }
ICTFBI 0:4edb816d21e1 75
ICTFBI 0:4edb816d21e1 76 void UsbSerial::format(int bits, int parity, int stop) {
ICTFBI 0:4edb816d21e1 77 //
ICTFBI 0:4edb816d21e1 78 }
ICTFBI 0:4edb816d21e1 79
ICTFBI 0:4edb816d21e1 80 #if 0 //For doc only
ICTFBI 0:4edb816d21e1 81 template <class T>
ICTFBI 0:4edb816d21e1 82 void attach(T* pCbItem, void (T::*pCbMeth)())
ICTFBI 0:4edb816d21e1 83 {
ICTFBI 0:4edb816d21e1 84 m_pCbItem = (CDummy*) pCbItem;
ICTFBI 0:4edb816d21e1 85 m_pCbMeth = (void (CDummy::*)()) pCbMeth;
ICTFBI 0:4edb816d21e1 86 }
ICTFBI 0:4edb816d21e1 87 #endif
ICTFBI 0:4edb816d21e1 88
ICTFBI 0:4edb816d21e1 89 int UsbSerial::_getc() {
ICTFBI 0:4edb816d21e1 90 NVIC_DisableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 91 NVIC_DisableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 92 char c;
ICTFBI 0:4edb816d21e1 93 c = *m_pInBufPos;
ICTFBI 0:4edb816d21e1 94 m_pInBufPos++;
ICTFBI 0:4edb816d21e1 95 NVIC_EnableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 96 NVIC_EnableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 97 return c;
ICTFBI 0:4edb816d21e1 98 }
ICTFBI 0:4edb816d21e1 99
ICTFBI 0:4edb816d21e1 100 int UsbSerial::_putc(int c) {
ICTFBI 0:4edb816d21e1 101 NVIC_DisableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 102 NVIC_DisableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 103 if( (m_pOutBufPos - m_outBufUsr) < BUF_LEN )
ICTFBI 0:4edb816d21e1 104 {
ICTFBI 0:4edb816d21e1 105 *m_pOutBufPos = (char) c;
ICTFBI 0:4edb816d21e1 106 m_pOutBufPos++;
ICTFBI 0:4edb816d21e1 107 }
ICTFBI 0:4edb816d21e1 108 else
ICTFBI 0:4edb816d21e1 109 {
ICTFBI 0:4edb816d21e1 110 DBG("NO WAY!!!\n");
ICTFBI 0:4edb816d21e1 111 }
ICTFBI 0:4edb816d21e1 112 #if 1
ICTFBI 0:4edb816d21e1 113 if( (m_pOutBufPos - m_outBufUsr) >= BUF_LEN ) //Must flush
ICTFBI 0:4edb816d21e1 114 {
ICTFBI 0:4edb816d21e1 115 if(m_timeout)
ICTFBI 0:4edb816d21e1 116 m_txTimeout.detach();
ICTFBI 0:4edb816d21e1 117 startTx();
ICTFBI 0:4edb816d21e1 118 }
ICTFBI 0:4edb816d21e1 119 else
ICTFBI 0:4edb816d21e1 120 {
ICTFBI 0:4edb816d21e1 121 /*if(m_timeout)
ICTFBI 0:4edb816d21e1 122 m_txTimeout.detach();
ICTFBI 0:4edb816d21e1 123 m_timeout = true;
ICTFBI 0:4edb816d21e1 124 m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT);*/
ICTFBI 0:4edb816d21e1 125 if(!m_timeout)
ICTFBI 0:4edb816d21e1 126 {
ICTFBI 0:4edb816d21e1 127 m_timeout = true;
ICTFBI 0:4edb816d21e1 128 m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT);
ICTFBI 0:4edb816d21e1 129 }
ICTFBI 0:4edb816d21e1 130 }
ICTFBI 0:4edb816d21e1 131 #endif
ICTFBI 0:4edb816d21e1 132 //startTx();
ICTFBI 0:4edb816d21e1 133 NVIC_EnableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 134 NVIC_EnableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 135 return c;
ICTFBI 0:4edb816d21e1 136 }
ICTFBI 0:4edb816d21e1 137
ICTFBI 0:4edb816d21e1 138 int UsbSerial::readable() {
ICTFBI 0:4edb816d21e1 139 NVIC_DisableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 140 NVIC_DisableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 141 int res;
ICTFBI 0:4edb816d21e1 142 if( (m_pInBufPos - m_inBufUsr) < m_inBufLen )
ICTFBI 0:4edb816d21e1 143 {
ICTFBI 0:4edb816d21e1 144 //DBG("\r\nREADABLE\r\n");
ICTFBI 0:4edb816d21e1 145 res = true;
ICTFBI 0:4edb816d21e1 146 }
ICTFBI 0:4edb816d21e1 147 else
ICTFBI 0:4edb816d21e1 148 {
ICTFBI 0:4edb816d21e1 149 //DBG("\r\nNOT READABLE\r\n");
ICTFBI 0:4edb816d21e1 150 startRx(); //Try to swap packets & start another transmission
ICTFBI 0:4edb816d21e1 151 res = ((m_pInBufPos - m_inBufUsr) < m_inBufLen )?true:false;
ICTFBI 0:4edb816d21e1 152 }
ICTFBI 0:4edb816d21e1 153 NVIC_EnableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 154 NVIC_EnableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 155 return (bool)res;
ICTFBI 0:4edb816d21e1 156 }
ICTFBI 0:4edb816d21e1 157
ICTFBI 0:4edb816d21e1 158 int UsbSerial::writeable() {
ICTFBI 0:4edb816d21e1 159 NVIC_DisableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 160 NVIC_DisableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 161 // DBG("\r\nWRITEABLE???\r\n");
ICTFBI 0:4edb816d21e1 162 int res = (bool)( (m_pOutBufPos - m_outBufUsr) < BUF_LEN);
ICTFBI 0:4edb816d21e1 163 NVIC_EnableIRQ(USB_IRQn);
ICTFBI 0:4edb816d21e1 164 NVIC_EnableIRQ(US_TICKER_TIMER_IRQn);
ICTFBI 0:4edb816d21e1 165 return res;
ICTFBI 0:4edb816d21e1 166 }
ICTFBI 0:4edb816d21e1 167
ICTFBI 0:4edb816d21e1 168 void UsbSerial::onReadable()
ICTFBI 0:4edb816d21e1 169 {
ICTFBI 0:4edb816d21e1 170 if(m_pInCbItem && m_pInCbMeth)
ICTFBI 0:4edb816d21e1 171 (m_pInCbItem->*m_pInCbMeth)();
ICTFBI 0:4edb816d21e1 172 }
ICTFBI 0:4edb816d21e1 173
ICTFBI 0:4edb816d21e1 174 void UsbSerial::onWriteable()
ICTFBI 0:4edb816d21e1 175 {
ICTFBI 0:4edb816d21e1 176 if(m_pOutCbItem && m_pOutCbMeth)
ICTFBI 0:4edb816d21e1 177 (m_pOutCbItem->*m_pOutCbMeth)();
ICTFBI 0:4edb816d21e1 178 }
ICTFBI 0:4edb816d21e1 179
ICTFBI 0:4edb816d21e1 180 void UsbSerial::onEpInTransfer()
ICTFBI 0:4edb816d21e1 181 {
ICTFBI 0:4edb816d21e1 182 int len = m_epIn.status();
ICTFBI 0:4edb816d21e1 183 DBG("RX transfer completed w len=%d\n",len);
ICTFBI 0:4edb816d21e1 184 startRx();
ICTFBI 0:4edb816d21e1 185 if(len > 0)
ICTFBI 0:4edb816d21e1 186 onReadable();
ICTFBI 0:4edb816d21e1 187 }
ICTFBI 0:4edb816d21e1 188
ICTFBI 0:4edb816d21e1 189 void UsbSerial::onEpOutTransfer()
ICTFBI 0:4edb816d21e1 190 {
ICTFBI 0:4edb816d21e1 191 int len = m_epOut.status();
ICTFBI 0:4edb816d21e1 192 DBG("TX transfer completed w len=%d\n",len);
ICTFBI 0:4edb816d21e1 193 if(m_timeout)
ICTFBI 0:4edb816d21e1 194 m_txTimeout.detach();
ICTFBI 0:4edb816d21e1 195 startTx();
ICTFBI 0:4edb816d21e1 196 if(len > 0)
ICTFBI 0:4edb816d21e1 197 onWriteable();
ICTFBI 0:4edb816d21e1 198 }
ICTFBI 0:4edb816d21e1 199
ICTFBI 0:4edb816d21e1 200 void UsbSerial::startTx()
ICTFBI 0:4edb816d21e1 201 {
ICTFBI 0:4edb816d21e1 202
ICTFBI 0:4edb816d21e1 203 DBG("Transfer>\n");
ICTFBI 0:4edb816d21e1 204
ICTFBI 0:4edb816d21e1 205 m_timeout = false;
ICTFBI 0:4edb816d21e1 206
ICTFBI 0:4edb816d21e1 207 // m_txTimeout.detach();
ICTFBI 0:4edb816d21e1 208
ICTFBI 0:4edb816d21e1 209 if(!(m_pOutBufPos - m_outBufUsr))
ICTFBI 0:4edb816d21e1 210 {
ICTFBI 0:4edb816d21e1 211 DBG("?!?!?\n");
ICTFBI 0:4edb816d21e1 212 return;
ICTFBI 0:4edb816d21e1 213 }
ICTFBI 0:4edb816d21e1 214
ICTFBI 0:4edb816d21e1 215 if( m_epOut.status() == USBERR_PROCESSING )
ICTFBI 0:4edb816d21e1 216 {
ICTFBI 0:4edb816d21e1 217 //Wait & retry
ICTFBI 0:4edb816d21e1 218 //m_timeout = true;
ICTFBI 0:4edb816d21e1 219 //m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT);
ICTFBI 0:4edb816d21e1 220 DBG("Ep is busy...\n");
ICTFBI 0:4edb816d21e1 221 return;
ICTFBI 0:4edb816d21e1 222 }
ICTFBI 0:4edb816d21e1 223
ICTFBI 0:4edb816d21e1 224 if( m_epOut.status() < 0 )
ICTFBI 0:4edb816d21e1 225 {
ICTFBI 0:4edb816d21e1 226 DBG("Tx trying again...\n");
ICTFBI 0:4edb816d21e1 227 m_epOut.transfer((volatile uint8_t*)m_outBufTrmt, m_outBufLen);
ICTFBI 0:4edb816d21e1 228 return;
ICTFBI 0:4edb816d21e1 229 }
ICTFBI 0:4edb816d21e1 230
ICTFBI 0:4edb816d21e1 231 m_outBufLen = m_pOutBufPos - m_outBufUsr;
ICTFBI 0:4edb816d21e1 232
ICTFBI 0:4edb816d21e1 233 //Swap buffers
ICTFBI 0:4edb816d21e1 234 volatile char* swapBuf = m_outBufUsr;
ICTFBI 0:4edb816d21e1 235 m_outBufUsr = m_outBufTrmt;
ICTFBI 0:4edb816d21e1 236 m_outBufTrmt = swapBuf;
ICTFBI 0:4edb816d21e1 237
ICTFBI 0:4edb816d21e1 238 m_epOut.transfer((volatile uint8_t*)m_outBufTrmt, m_outBufLen);
ICTFBI 0:4edb816d21e1 239
ICTFBI 0:4edb816d21e1 240 m_pOutBufPos = m_outBufUsr;
ICTFBI 0:4edb816d21e1 241
ICTFBI 0:4edb816d21e1 242 }
ICTFBI 0:4edb816d21e1 243
ICTFBI 0:4edb816d21e1 244 void UsbSerial::startRx()
ICTFBI 0:4edb816d21e1 245 {
ICTFBI 0:4edb816d21e1 246 if( (m_pInBufPos - m_inBufUsr) < m_inBufLen )
ICTFBI 0:4edb816d21e1 247 {
ICTFBI 0:4edb816d21e1 248 //User buf is not empty, cannot swap now...
ICTFBI 0:4edb816d21e1 249 return;
ICTFBI 0:4edb816d21e1 250 }
ICTFBI 0:4edb816d21e1 251 int len = m_epIn.status();
ICTFBI 0:4edb816d21e1 252 if( len == USBERR_PROCESSING )
ICTFBI 0:4edb816d21e1 253 {
ICTFBI 0:4edb816d21e1 254 //Previous transmission not completed
ICTFBI 0:4edb816d21e1 255 return;
ICTFBI 0:4edb816d21e1 256 }
ICTFBI 0:4edb816d21e1 257 if( len < 0 )
ICTFBI 0:4edb816d21e1 258 {
ICTFBI 0:4edb816d21e1 259 DBG("Rx trying again...\n");
ICTFBI 0:4edb816d21e1 260 m_epIn.transfer((volatile uint8_t*)m_inBufTrmt, BUF_LEN); //Start another transmission
ICTFBI 0:4edb816d21e1 261 return;
ICTFBI 0:4edb816d21e1 262 }
ICTFBI 0:4edb816d21e1 263
ICTFBI 0:4edb816d21e1 264 m_inBufLen = len;
ICTFBI 0:4edb816d21e1 265
ICTFBI 0:4edb816d21e1 266 //Swap buffers
ICTFBI 0:4edb816d21e1 267 volatile char* swapBuf = m_inBufUsr;
ICTFBI 0:4edb816d21e1 268 m_inBufUsr = m_inBufTrmt;
ICTFBI 0:4edb816d21e1 269 m_inBufTrmt = swapBuf;
ICTFBI 0:4edb816d21e1 270 m_pInBufPos = m_inBufUsr;
ICTFBI 0:4edb816d21e1 271
ICTFBI 0:4edb816d21e1 272 DBG("Starting new transfer\n");
ICTFBI 0:4edb816d21e1 273 m_epIn.transfer((volatile uint8_t*)m_inBufTrmt, BUF_LEN); //Start another transmission
ICTFBI 0:4edb816d21e1 274
ICTFBI 0:4edb816d21e1 275 }
ICTFBI 0:4edb816d21e1 276
ICTFBI 0:4edb816d21e1 277 #ifdef MBED_RPC
ICTFBI 0:4edb816d21e1 278 const struct rpc_method *UsbSerial::get_rpc_methods() {
ICTFBI 0:4edb816d21e1 279 static const rpc_method methods[] = {
ICTFBI 0:4edb816d21e1 280 { "readable", rpc_method_caller<int, UsbSerial, &UsbSerial::readable> },
ICTFBI 0:4edb816d21e1 281 { "writeable", rpc_method_caller<int, UsbSerial, &UsbSerial::writeable> },
ICTFBI 0:4edb816d21e1 282 RPC_METHOD_SUPER(Stream)
ICTFBI 0:4edb816d21e1 283 };
ICTFBI 0:4edb816d21e1 284 return methods;
ICTFBI 0:4edb816d21e1 285 }
ICTFBI 0:4edb816d21e1 286
ICTFBI 0:4edb816d21e1 287 struct rpc_class *UsbSerial::get_rpc_class() {
ICTFBI 0:4edb816d21e1 288 static const rpc_function funcs[] = {
ICTFBI 0:4edb816d21e1 289 /*{ "new", rpc_function_caller<const char*, UsbDevice*, int, int, const char*, Base::construct<UsbSerial,UsbDevice*,int,int,const char*> > },*/ //RPC is buggy
ICTFBI 0:4edb816d21e1 290 RPC_METHOD_END
ICTFBI 0:4edb816d21e1 291 };
ICTFBI 0:4edb816d21e1 292 static rpc_class c = { "UsbSerial", funcs, NULL };
ICTFBI 0:4edb816d21e1 293 return &c;
ICTFBI 0:4edb816d21e1 294 }
ICTFBI 0:4edb816d21e1 295 #endif
ICTFBI 0:4edb816d21e1 296
ICTFBI 0:4edb816d21e1 297 } // namespace mbed
ICTFBI 0:4edb816d21e1 298
ICTFBI 0:4edb816d21e1 299 #endif
ICTFBI 0:4edb816d21e1 300