Ilya I
Example program with HTTPServer and sensor data streaming over TCPSockets, using Donatien Garnier's Net APIs and services code on top of LWIP. Files StreamServer.h and .cpp encapsulate streaming over TCPSockets. Broadcast is done by sendToAll(), and all incoming data is echoed back to the client. Echo code can be replaced with some remote control of the streaming interface. See main() that shows how to periodically send some data to all subscribed clients. To subscribe, a client should open a socket at <mbed_ip> port 123. I used few lines in TCL code to set up a quick sink for the data. HTTP files are served on port 80 concurrently to the streaming.
drv/serial/usb/UsbSerial.cpp@1:3ee499525aa5, 2010-06-14 (annotated)
- Committer:
- iva2k
- Date:
- Mon Jun 14 03:24:33 2010 +0000
- Revision:
- 1:3ee499525aa5
- Parent:
- 0:e614f7875b60
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| iva2k | 0:e614f7875b60 | 1 | |
| iva2k | 0:e614f7875b60 | 2 | /* |
| iva2k | 0:e614f7875b60 | 3 | Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) |
| iva2k | 0:e614f7875b60 | 4 | |
| iva2k | 0:e614f7875b60 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| iva2k | 0:e614f7875b60 | 6 | of this software and associated documentation files (the "Software"), to deal |
| iva2k | 0:e614f7875b60 | 7 | in the Software without restriction, including without limitation the rights |
| iva2k | 0:e614f7875b60 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| iva2k | 0:e614f7875b60 | 9 | copies of the Software, and to permit persons to whom the Software is |
| iva2k | 0:e614f7875b60 | 10 | furnished to do so, subject to the following conditions: |
| iva2k | 0:e614f7875b60 | 11 | |
| iva2k | 0:e614f7875b60 | 12 | The above copyright notice and this permission notice shall be included in |
| iva2k | 0:e614f7875b60 | 13 | all copies or substantial portions of the Software. |
| iva2k | 0:e614f7875b60 | 14 | |
| iva2k | 0:e614f7875b60 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| iva2k | 0:e614f7875b60 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| iva2k | 0:e614f7875b60 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| iva2k | 0:e614f7875b60 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| iva2k | 0:e614f7875b60 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| iva2k | 0:e614f7875b60 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| iva2k | 0:e614f7875b60 | 21 | THE SOFTWARE. |
| iva2k | 0:e614f7875b60 | 22 | */ |
| iva2k | 0:e614f7875b60 | 23 | |
| iva2k | 0:e614f7875b60 | 24 | #include "UsbSerial.h" |
| iva2k | 0:e614f7875b60 | 25 | #include "usbserialif.h" |
| iva2k | 0:e614f7875b60 | 26 | #include "rpc.h" |
| iva2k | 0:e614f7875b60 | 27 | |
| iva2k | 0:e614f7875b60 | 28 | #include "netCfg.h" |
| iva2k | 0:e614f7875b60 | 29 | #if NET_USB_SERIAL |
| iva2k | 0:e614f7875b60 | 30 | |
| iva2k | 0:e614f7875b60 | 31 | namespace mbed { |
| iva2k | 0:e614f7875b60 | 32 | |
| iva2k | 0:e614f7875b60 | 33 | #define BUF_LEN 64 |
| iva2k | 0:e614f7875b60 | 34 | #define FLUSH_TMOUT 10000 //US |
| iva2k | 0:e614f7875b60 | 35 | |
| iva2k | 0:e614f7875b60 | 36 | UsbSerial::UsbSerial(int usbDev, int usbIf, const char *name /*= NULL*/) : Stream(name), m_txTimeout() { |
| iva2k | 0:e614f7875b60 | 37 | m_inBufEven = new char[BUF_LEN]; |
| iva2k | 0:e614f7875b60 | 38 | m_inBufOdd = new char[BUF_LEN]; |
| iva2k | 0:e614f7875b60 | 39 | m_pInBufPos = m_inBufUsr = m_inBufEven; |
| iva2k | 0:e614f7875b60 | 40 | m_inBufTrmt = m_inBufOdd; |
| iva2k | 0:e614f7875b60 | 41 | |
| iva2k | 0:e614f7875b60 | 42 | m_outBufEven = new char[BUF_LEN]; |
| iva2k | 0:e614f7875b60 | 43 | m_outBufOdd = new char[BUF_LEN]; |
| iva2k | 0:e614f7875b60 | 44 | m_pOutBufPos = m_outBufUsr = m_outBufEven; |
| iva2k | 0:e614f7875b60 | 45 | m_outBufTrmt = m_outBufOdd; |
| iva2k | 0:e614f7875b60 | 46 | |
| iva2k | 0:e614f7875b60 | 47 | m_inBufLen = m_outBufLen = 0; |
| iva2k | 0:e614f7875b60 | 48 | |
| iva2k | 0:e614f7875b60 | 49 | // startRx(); |
| iva2k | 0:e614f7875b60 | 50 | } |
| iva2k | 0:e614f7875b60 | 51 | |
| iva2k | 0:e614f7875b60 | 52 | UsbSerial::~UsbSerial() |
| iva2k | 0:e614f7875b60 | 53 | { |
| iva2k | 0:e614f7875b60 | 54 | delete[] m_inBufEven; |
| iva2k | 0:e614f7875b60 | 55 | delete[] m_inBufOdd; |
| iva2k | 0:e614f7875b60 | 56 | delete[] m_outBufEven; |
| iva2k | 0:e614f7875b60 | 57 | delete[] m_outBufOdd; |
| iva2k | 0:e614f7875b60 | 58 | } |
| iva2k | 0:e614f7875b60 | 59 | |
| iva2k | 0:e614f7875b60 | 60 | void UsbSerial::baud(int baudrate) { |
| iva2k | 0:e614f7875b60 | 61 | // |
| iva2k | 0:e614f7875b60 | 62 | } |
| iva2k | 0:e614f7875b60 | 63 | |
| iva2k | 0:e614f7875b60 | 64 | void UsbSerial::format(int bits, int parity, int stop) { |
| iva2k | 0:e614f7875b60 | 65 | // |
| iva2k | 0:e614f7875b60 | 66 | } |
| iva2k | 0:e614f7875b60 | 67 | |
| iva2k | 0:e614f7875b60 | 68 | int UsbSerial::_getc() { |
| iva2k | 0:e614f7875b60 | 69 | char c; |
| iva2k | 0:e614f7875b60 | 70 | c = *m_pInBufPos; |
| iva2k | 0:e614f7875b60 | 71 | m_pInBufPos++; |
| iva2k | 0:e614f7875b60 | 72 | return c; |
| iva2k | 0:e614f7875b60 | 73 | } |
| iva2k | 0:e614f7875b60 | 74 | |
| iva2k | 0:e614f7875b60 | 75 | int UsbSerial::_putc(int c) { |
| iva2k | 0:e614f7875b60 | 76 | m_txTimeout.detach(); //Do not want to be interrupted, accessing shared data here... |
| iva2k | 0:e614f7875b60 | 77 | *m_pOutBufPos = (char) c; |
| iva2k | 0:e614f7875b60 | 78 | m_pOutBufPos++; |
| iva2k | 0:e614f7875b60 | 79 | if( (m_pOutBufPos - m_outBufUsr) == BUF_LEN) //Must flush |
| iva2k | 0:e614f7875b60 | 80 | { |
| iva2k | 0:e614f7875b60 | 81 | startTx(); |
| iva2k | 0:e614f7875b60 | 82 | } |
| iva2k | 0:e614f7875b60 | 83 | else |
| iva2k | 0:e614f7875b60 | 84 | { |
| iva2k | 0:e614f7875b60 | 85 | m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); |
| iva2k | 0:e614f7875b60 | 86 | } |
| iva2k | 0:e614f7875b60 | 87 | return c; |
| iva2k | 0:e614f7875b60 | 88 | } |
| iva2k | 0:e614f7875b60 | 89 | |
| iva2k | 0:e614f7875b60 | 90 | int UsbSerial::readable() { |
| iva2k | 0:e614f7875b60 | 91 | if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) |
| iva2k | 0:e614f7875b60 | 92 | { |
| iva2k | 0:e614f7875b60 | 93 | // printf("\r\nREADABLE\r\n"); |
| iva2k | 0:e614f7875b60 | 94 | return true; |
| iva2k | 0:e614f7875b60 | 95 | } |
| iva2k | 0:e614f7875b60 | 96 | else |
| iva2k | 0:e614f7875b60 | 97 | { |
| iva2k | 0:e614f7875b60 | 98 | // printf("\r\nNOT READABLE\r\n"); |
| iva2k | 0:e614f7875b60 | 99 | startRx(); //Try to swap packets & start another transmission |
| iva2k | 0:e614f7875b60 | 100 | return ((m_pInBufPos - m_inBufUsr) < m_inBufLen )?true:false; |
| iva2k | 0:e614f7875b60 | 101 | } |
| iva2k | 0:e614f7875b60 | 102 | } |
| iva2k | 0:e614f7875b60 | 103 | |
| iva2k | 0:e614f7875b60 | 104 | int UsbSerial::writeable() { |
| iva2k | 0:e614f7875b60 | 105 | // printf("\r\nWRITEABLE???\r\n"); |
| iva2k | 0:e614f7875b60 | 106 | return (bool)( (m_pOutBufPos - m_outBufUsr) < BUF_LEN); |
| iva2k | 0:e614f7875b60 | 107 | } |
| iva2k | 0:e614f7875b60 | 108 | |
| iva2k | 0:e614f7875b60 | 109 | |
| iva2k | 0:e614f7875b60 | 110 | void UsbSerial::startTx() |
| iva2k | 0:e614f7875b60 | 111 | { |
| iva2k | 0:e614f7875b60 | 112 | if( SerialTransmitted() < 0 ) |
| iva2k | 0:e614f7875b60 | 113 | { |
| iva2k | 0:e614f7875b60 | 114 | //Wait & retry |
| iva2k | 0:e614f7875b60 | 115 | m_txTimeout.attach_us(this, &UsbSerial::startTx, FLUSH_TMOUT); |
| iva2k | 0:e614f7875b60 | 116 | return; |
| iva2k | 0:e614f7875b60 | 117 | } |
| iva2k | 0:e614f7875b60 | 118 | |
| iva2k | 0:e614f7875b60 | 119 | m_outBufLen = m_pOutBufPos - m_outBufUsr; |
| iva2k | 0:e614f7875b60 | 120 | |
| iva2k | 0:e614f7875b60 | 121 | //Swap buffers |
| iva2k | 0:e614f7875b60 | 122 | volatile char* swapBuf = m_outBufUsr; |
| iva2k | 0:e614f7875b60 | 123 | m_outBufUsr = m_outBufTrmt; |
| iva2k | 0:e614f7875b60 | 124 | m_outBufTrmt = swapBuf; |
| iva2k | 0:e614f7875b60 | 125 | |
| iva2k | 0:e614f7875b60 | 126 | SerialTx((volatile USB_INT08U*)m_outBufTrmt, m_outBufLen); |
| iva2k | 0:e614f7875b60 | 127 | |
| iva2k | 0:e614f7875b60 | 128 | m_pOutBufPos = m_outBufUsr; |
| iva2k | 0:e614f7875b60 | 129 | |
| iva2k | 0:e614f7875b60 | 130 | } |
| iva2k | 0:e614f7875b60 | 131 | |
| iva2k | 0:e614f7875b60 | 132 | void UsbSerial::startRx() |
| iva2k | 0:e614f7875b60 | 133 | { |
| iva2k | 0:e614f7875b60 | 134 | if( (m_pInBufPos - m_inBufUsr) < m_inBufLen ) |
| iva2k | 0:e614f7875b60 | 135 | { |
| iva2k | 0:e614f7875b60 | 136 | //User buf is not empty, cannot swap now... |
| iva2k | 0:e614f7875b60 | 137 | return; |
| iva2k | 0:e614f7875b60 | 138 | } |
| iva2k | 0:e614f7875b60 | 139 | int len = SerialReceived(); |
| iva2k | 0:e614f7875b60 | 140 | if( len < 0 ) |
| iva2k | 0:e614f7875b60 | 141 | { |
| iva2k | 0:e614f7875b60 | 142 | //Previous transmission not completed |
| iva2k | 0:e614f7875b60 | 143 | return; |
| iva2k | 0:e614f7875b60 | 144 | } |
| iva2k | 0:e614f7875b60 | 145 | |
| iva2k | 0:e614f7875b60 | 146 | m_inBufLen = len; |
| iva2k | 0:e614f7875b60 | 147 | |
| iva2k | 0:e614f7875b60 | 148 | //Swap buffers |
| iva2k | 0:e614f7875b60 | 149 | volatile char* swapBuf = m_inBufUsr; |
| iva2k | 0:e614f7875b60 | 150 | m_inBufUsr = m_inBufTrmt; |
| iva2k | 0:e614f7875b60 | 151 | m_inBufTrmt = swapBuf; |
| iva2k | 0:e614f7875b60 | 152 | |
| iva2k | 0:e614f7875b60 | 153 | SerialRx((volatile USB_INT08U*)m_inBufTrmt, BUF_LEN); //Start another transmission |
| iva2k | 0:e614f7875b60 | 154 | |
| iva2k | 0:e614f7875b60 | 155 | m_pInBufPos = m_inBufUsr; |
| iva2k | 0:e614f7875b60 | 156 | |
| iva2k | 0:e614f7875b60 | 157 | } |
| iva2k | 0:e614f7875b60 | 158 | |
| iva2k | 0:e614f7875b60 | 159 | |
| iva2k | 0:e614f7875b60 | 160 | |
| iva2k | 0:e614f7875b60 | 161 | const struct rpc_method *UsbSerial::get_rpc_methods() { |
| iva2k | 0:e614f7875b60 | 162 | static const rpc_method methods[] = { |
| iva2k | 0:e614f7875b60 | 163 | { "baud", rpc_method_caller<UsbSerial, int, &UsbSerial::baud> }, |
| iva2k | 0:e614f7875b60 | 164 | { "format", rpc_method_caller<UsbSerial, int, int, int, &UsbSerial::format> }, |
| iva2k | 0:e614f7875b60 | 165 | { "readable", rpc_method_caller<int, UsbSerial, &UsbSerial::readable> }, |
| iva2k | 0:e614f7875b60 | 166 | { "writeable", rpc_method_caller<int, UsbSerial, &UsbSerial::writeable> }, |
| iva2k | 0:e614f7875b60 | 167 | RPC_METHOD_SUPER(Stream) |
| iva2k | 0:e614f7875b60 | 168 | }; |
| iva2k | 0:e614f7875b60 | 169 | return methods; |
| iva2k | 0:e614f7875b60 | 170 | } |
| iva2k | 0:e614f7875b60 | 171 | |
| iva2k | 0:e614f7875b60 | 172 | struct rpc_class *UsbSerial::get_rpc_class() { |
| iva2k | 0:e614f7875b60 | 173 | static const rpc_function funcs[] = { |
| iva2k | 0:e614f7875b60 | 174 | { "new", rpc_function_caller<const char*, int, int, const char*, Base::construct<UsbSerial,int,int,const char*> > }, |
| iva2k | 0:e614f7875b60 | 175 | RPC_METHOD_END |
| iva2k | 0:e614f7875b60 | 176 | }; |
| iva2k | 0:e614f7875b60 | 177 | static rpc_class c = { "UsbSerial", funcs, NULL }; |
| iva2k | 0:e614f7875b60 | 178 | return &c; |
| iva2k | 0:e614f7875b60 | 179 | } |
| iva2k | 0:e614f7875b60 | 180 | |
| iva2k | 0:e614f7875b60 | 181 | } // namespace mbed |
| iva2k | 0:e614f7875b60 | 182 | |
| iva2k | 0:e614f7875b60 | 183 | #endif |
| iva2k | 0:e614f7875b60 | 184 |