Donatien Garnier
NetServices Stack source
Dependents: HelloWorld ServoInterfaceBoardExample1 4180_Lab4
drv/serial/usb/UsbSerial.cpp@0:632c9925f013, 2010-06-11 (annotated)
- Committer:
- donatien
- Date:
- Fri Jun 11 16:05:15 2010 +0000
- Revision:
- 0:632c9925f013
- Child:
- 4:fd826cad83c0
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| donatien | 0:632c9925f013 | 1 | |
| donatien | 0:632c9925f013 | 2 | /* |
| donatien | 0:632c9925f013 | 3 | Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) |
| donatien | 0:632c9925f013 | 4 | |
| donatien | 0:632c9925f013 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| donatien | 0:632c9925f013 | 6 | of this software and associated documentation files (the "Software"), to deal |
| donatien | 0:632c9925f013 | 7 | in the Software without restriction, including without limitation the rights |
| donatien | 0:632c9925f013 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| donatien | 0:632c9925f013 | 9 | copies of the Software, and to permit persons to whom the Software is |
| donatien | 0:632c9925f013 | 10 | furnished to do so, subject to the following conditions: |
| donatien | 0:632c9925f013 | 11 | |
| donatien | 0:632c9925f013 | 12 | The above copyright notice and this permission notice shall be included in |
| donatien | 0:632c9925f013 | 13 | all copies or substantial portions of the Software. |
| donatien | 0:632c9925f013 | 14 | |
| donatien | 0:632c9925f013 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| donatien | 0:632c9925f013 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| donatien | 0:632c9925f013 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| donatien | 0:632c9925f013 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| donatien | 0:632c9925f013 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| donatien | 0:632c9925f013 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| donatien | 0:632c9925f013 | 21 | THE SOFTWARE. |
| donatien | 0:632c9925f013 | 22 | */ |
| donatien | 0:632c9925f013 | 23 | |
| donatien | 0:632c9925f013 | 24 | #include "UsbSerial.h" |
| donatien | 0:632c9925f013 | 25 | #include "usbserialif.h" |
| donatien | 0:632c9925f013 | 26 | #include "rpc.h" |
| donatien | 0:632c9925f013 | 27 | |
| donatien | 0:632c9925f013 | 28 | #include "netCfg.h" |
| donatien | 0:632c9925f013 | 29 | #if NET_USB_SERIAL |
| donatien | 0:632c9925f013 | 30 | |
| donatien | 0:632c9925f013 | 31 | namespace mbed { |
| donatien | 0:632c9925f013 | 32 | |
| donatien | 0:632c9925f013 | 33 | #define BUF_LEN 64 |
| donatien | 0:632c9925f013 | 34 | #define FLUSH_TMOUT 10000 //US |
| donatien | 0:632c9925f013 | 35 | |
| donatien | 0:632c9925f013 | 36 | UsbSerial::UsbSerial(int usbDev, int usbIf, const char *name /*= NULL*/) : Stream(name), m_txTimeout() { |
| donatien | 0:632c9925f013 | 37 | m_inBufEven = new char[BUF_LEN]; |
| donatien | 0:632c9925f013 | 38 | m_inBufOdd = new char[BUF_LEN]; |
| donatien | 0:632c9925f013 | 39 | m_pInBufPos = m_inBufUsr = m_inBufEven; |
| donatien | 0:632c9925f013 | 40 | m_inBufTrmt = m_inBufOdd; |
| donatien | 0:632c9925f013 | 41 | |
| donatien | 0:632c9925f013 | 42 | m_outBufEven = new char[BUF_LEN]; |
| donatien | 0:632c9925f013 | 43 | m_outBufOdd = new char[BUF_LEN]; |
| donatien | 0:632c9925f013 | 44 | m_pOutBufPos = m_outBufUsr = m_outBufEven; |
| donatien | 0:632c9925f013 | 45 | m_outBufTrmt = m_outBufOdd; |
| donatien | 0:632c9925f013 | 46 | |
| donatien | 0:632c9925f013 | 47 | m_inBufLen = m_outBufLen = 0; |
| donatien | 0:632c9925f013 | 48 | |
| donatien | 0:632c9925f013 | 49 | // startRx(); |
| donatien | 0:632c9925f013 | 50 | } |
| donatien | 0:632c9925f013 | 51 | |
| donatien | 0:632c9925f013 | 52 | UsbSerial::~UsbSerial() |
| donatien | 0:632c9925f013 | 53 | { |
| donatien | 0:632c9925f013 | 54 | delete[] m_inBufEven; |
| donatien | 0:632c9925f013 | 55 | delete[] m_inBufOdd; |
| donatien | 0:632c9925f013 | 56 | delete[] m_outBufEven; |
| donatien | 0:632c9925f013 | 57 | delete[] m_outBufOdd; |
| donatien | 0:632c9925f013 | 58 | } |
| donatien | 0:632c9925f013 | 59 | |
| donatien | 0:632c9925f013 | 60 | void UsbSerial::baud(int baudrate) { |
| donatien | 0:632c9925f013 | 61 | // |
| donatien | 0:632c9925f013 | 62 | } |
| donatien | 0:632c9925f013 | 63 | |
| donatien | 0:632c9925f013 | 64 | void UsbSerial::format(int bits, int parity, int stop) { |
| donatien | 0:632c9925f013 | 65 | // |
| donatien | 0:632c9925f013 | 66 | } |
| donatien | 0:632c9925f013 | 67 | |
| donatien | 0:632c9925f013 | 68 | int UsbSerial::_getc() { |
| donatien | 0:632c9925f013 | 69 | char c; |
| donatien | 0:632c9925f013 | 70 | c = *m_pInBufPos; |
| donatien | 0:632c9925f013 | 71 | m_pInBufPos++; |
| donatien | 0:632c9925f013 | 72 | return c; |
| donatien | 0:632c9925f013 | 73 | } |
| donatien | 0:632c9925f013 | 74 | |
| donatien | 0:632c9925f013 | 75 | int UsbSerial::_putc(int c) { |
| donatien | 0:632c9925f013 | 76 | m_txTimeout.detach(); //Do not want to be interrupted, accessing shared data here... |
| donatien | 0:632c9925f013 | 77 | *m_pOutBufPos = (char) c; |
| donatien | 0:632c9925f013 | 78 | m_pOutBufPos++; |
| donatien | 0:632c9925f013 | 79 | if( (m_pOutBufPos - m_outBufUsr) == BUF_LEN) //Must flush |
| donatien | 0:632c9925f013 | 80 | { |
| donatien | 0:632c9925f013 | 81 | startTx(); |
| donatien | 0:632c9925f013 | 82 | } |
| donatien | 0:632c9925f013 | 83 | else |
| donatien | 0:632c9925f013 | 84 | { |
| donatien | 0:632c9925f013 | 85 | m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); |
| donatien | 0:632c9925f013 | 86 | } |
| donatien | 0:632c9925f013 | 87 | return c; |
| donatien | 0:632c9925f013 | 88 | } |
| donatien | 0:632c9925f013 | 89 | |
| donatien | 0:632c9925f013 | 90 | int UsbSerial::readable() { |
| donatien | 0:632c9925f013 | 91 | if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) |
| donatien | 0:632c9925f013 | 92 | { |
| donatien | 0:632c9925f013 | 93 | // printf("\r\nREADABLE\r\n"); |
| donatien | 0:632c9925f013 | 94 | return true; |
| donatien | 0:632c9925f013 | 95 | } |
| donatien | 0:632c9925f013 | 96 | else |
| donatien | 0:632c9925f013 | 97 | { |
| donatien | 0:632c9925f013 | 98 | // printf("\r\nNOT READABLE\r\n"); |
| donatien | 0:632c9925f013 | 99 | startRx(); //Try to swap packets & start another transmission |
| donatien | 0:632c9925f013 | 100 | return ((m_pInBufPos - m_inBufUsr) < m_inBufLen )?true:false; |
| donatien | 0:632c9925f013 | 101 | } |
| donatien | 0:632c9925f013 | 102 | } |
| donatien | 0:632c9925f013 | 103 | |
| donatien | 0:632c9925f013 | 104 | int UsbSerial::writeable() { |
| donatien | 0:632c9925f013 | 105 | // printf("\r\nWRITEABLE???\r\n"); |
| donatien | 0:632c9925f013 | 106 | return (bool)( (m_pOutBufPos - m_outBufUsr) < BUF_LEN); |
| donatien | 0:632c9925f013 | 107 | } |
| donatien | 0:632c9925f013 | 108 | |
| donatien | 0:632c9925f013 | 109 | |
| donatien | 0:632c9925f013 | 110 | void UsbSerial::startTx() |
| donatien | 0:632c9925f013 | 111 | { |
| donatien | 0:632c9925f013 | 112 | if( SerialTransmitted() < 0 ) |
| donatien | 0:632c9925f013 | 113 | { |
| donatien | 0:632c9925f013 | 114 | //Wait & retry |
| donatien | 0:632c9925f013 | 115 | m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); |
| donatien | 0:632c9925f013 | 116 | return; |
| donatien | 0:632c9925f013 | 117 | } |
| donatien | 0:632c9925f013 | 118 | |
| donatien | 0:632c9925f013 | 119 | m_outBufLen = m_pOutBufPos - m_outBufUsr; |
| donatien | 0:632c9925f013 | 120 | |
| donatien | 0:632c9925f013 | 121 | //Swap buffers |
| donatien | 0:632c9925f013 | 122 | volatile char* swapBuf = m_outBufUsr; |
| donatien | 0:632c9925f013 | 123 | m_outBufUsr = m_outBufTrmt; |
| donatien | 0:632c9925f013 | 124 | m_outBufTrmt = swapBuf; |
| donatien | 0:632c9925f013 | 125 | |
| donatien | 0:632c9925f013 | 126 | SerialTx((volatile USB_INT08U*)m_outBufTrmt, m_outBufLen); |
| donatien | 0:632c9925f013 | 127 | |
| donatien | 0:632c9925f013 | 128 | m_pOutBufPos = m_outBufUsr; |
| donatien | 0:632c9925f013 | 129 | |
| donatien | 0:632c9925f013 | 130 | } |
| donatien | 0:632c9925f013 | 131 | |
| donatien | 0:632c9925f013 | 132 | void UsbSerial::startRx() |
| donatien | 0:632c9925f013 | 133 | { |
| donatien | 0:632c9925f013 | 134 | if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) |
| donatien | 0:632c9925f013 | 135 | { |
| donatien | 0:632c9925f013 | 136 | //User buf is not empty, cannot swap now... |
| donatien | 0:632c9925f013 | 137 | return; |
| donatien | 0:632c9925f013 | 138 | } |
| donatien | 0:632c9925f013 | 139 | int len = SerialReceived(); |
| donatien | 0:632c9925f013 | 140 | if( len < 0 ) |
| donatien | 0:632c9925f013 | 141 | { |
| donatien | 0:632c9925f013 | 142 | //Previous transmission not completed |
| donatien | 0:632c9925f013 | 143 | return; |
| donatien | 0:632c9925f013 | 144 | } |
| donatien | 0:632c9925f013 | 145 | |
| donatien | 0:632c9925f013 | 146 | m_inBufLen = len; |
| donatien | 0:632c9925f013 | 147 | |
| donatien | 0:632c9925f013 | 148 | //Swap buffers |
| donatien | 0:632c9925f013 | 149 | volatile char* swapBuf = m_inBufUsr; |
| donatien | 0:632c9925f013 | 150 | m_inBufUsr = m_inBufTrmt; |
| donatien | 0:632c9925f013 | 151 | m_inBufTrmt = swapBuf; |
| donatien | 0:632c9925f013 | 152 | |
| donatien | 0:632c9925f013 | 153 | SerialRx((volatile USB_INT08U*)m_inBufTrmt, BUF_LEN); //Start another transmission |
| donatien | 0:632c9925f013 | 154 | |
| donatien | 0:632c9925f013 | 155 | m_pInBufPos = m_inBufUsr; |
| donatien | 0:632c9925f013 | 156 | |
| donatien | 0:632c9925f013 | 157 | } |
| donatien | 0:632c9925f013 | 158 | |
| donatien | 0:632c9925f013 | 159 | |
| donatien | 0:632c9925f013 | 160 | |
| donatien | 0:632c9925f013 | 161 | const struct rpc_method *UsbSerial::get_rpc_methods() { |
| donatien | 0:632c9925f013 | 162 | static const rpc_method methods[] = { |
| donatien | 0:632c9925f013 | 163 | { "baud", rpc_method_caller<UsbSerial, int, &UsbSerial::baud> }, |
| donatien | 0:632c9925f013 | 164 | { "format", rpc_method_caller<UsbSerial, int, int, int, &UsbSerial::format> }, |
| donatien | 0:632c9925f013 | 165 | { "readable", rpc_method_caller<int, UsbSerial, &UsbSerial::readable> }, |
| donatien | 0:632c9925f013 | 166 | { "writeable", rpc_method_caller<int, UsbSerial, &UsbSerial::writeable> }, |
| donatien | 0:632c9925f013 | 167 | RPC_METHOD_SUPER(Stream) |
| donatien | 0:632c9925f013 | 168 | }; |
| donatien | 0:632c9925f013 | 169 | return methods; |
| donatien | 0:632c9925f013 | 170 | } |
| donatien | 0:632c9925f013 | 171 | |
| donatien | 0:632c9925f013 | 172 | struct rpc_class *UsbSerial::get_rpc_class() { |
| donatien | 0:632c9925f013 | 173 | static const rpc_function funcs[] = { |
| donatien | 0:632c9925f013 | 174 | { "new", rpc_function_caller<const char*, int, int, const char*, Base::construct<UsbSerial,int,int,const char*> > }, |
| donatien | 0:632c9925f013 | 175 | RPC_METHOD_END |
| donatien | 0:632c9925f013 | 176 | }; |
| donatien | 0:632c9925f013 | 177 | static rpc_class c = { "UsbSerial", funcs, NULL }; |
| donatien | 0:632c9925f013 | 178 | return &c; |
| donatien | 0:632c9925f013 | 179 | } |
| donatien | 0:632c9925f013 | 180 | |
| donatien | 0:632c9925f013 | 181 | } // namespace mbed |
| donatien | 0:632c9925f013 | 182 | |
| donatien | 0:632c9925f013 | 183 | #endif |
| donatien | 0:632c9925f013 | 184 |