Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/drv/serial/lwip/sio.cpp@0:8d87bc453349, 2014-12-18 (annotated)

Committer:
ninoderkinderen
Date:
Thu Dec 18 09:35:49 2014 +0000
Revision:
0:8d87bc453349
Programma embedded C

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 0:8d87bc453349 1
ninoderkinderen 0:8d87bc453349 2 /*
ninoderkinderen 0:8d87bc453349 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
ninoderkinderen 0:8d87bc453349 4
ninoderkinderen 0:8d87bc453349 5 Permission is hereby granted, free of charge, to any person obtaining a copy
ninoderkinderen 0:8d87bc453349 6 of this software and associated documentation files (the "Software"), to deal
ninoderkinderen 0:8d87bc453349 7 in the Software without restriction, including without limitation the rights
ninoderkinderen 0:8d87bc453349 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ninoderkinderen 0:8d87bc453349 9 copies of the Software, and to permit persons to whom the Software is
ninoderkinderen 0:8d87bc453349 10 furnished to do so, subject to the following conditions:
ninoderkinderen 0:8d87bc453349 11
ninoderkinderen 0:8d87bc453349 12 The above copyright notice and this permission notice shall be included in
ninoderkinderen 0:8d87bc453349 13 all copies or substantial portions of the Software.
ninoderkinderen 0:8d87bc453349 14
ninoderkinderen 0:8d87bc453349 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ninoderkinderen 0:8d87bc453349 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ninoderkinderen 0:8d87bc453349 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ninoderkinderen 0:8d87bc453349 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ninoderkinderen 0:8d87bc453349 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ninoderkinderen 0:8d87bc453349 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ninoderkinderen 0:8d87bc453349 21 THE SOFTWARE.
ninoderkinderen 0:8d87bc453349 22 */
ninoderkinderen 0:8d87bc453349 23
ninoderkinderen 0:8d87bc453349 24 /*
ninoderkinderen 0:8d87bc453349 25
ninoderkinderen 0:8d87bc453349 26 This is a wrapper around Serial if for lwIP (acts as a serial driver)
ninoderkinderen 0:8d87bc453349 27
ninoderkinderen 0:8d87bc453349 28 See sio.h for functions to be implemented
ninoderkinderen 0:8d87bc453349 29
ninoderkinderen 0:8d87bc453349 30 sio_fd_t is a void* defined type, we use it as a SerialBuf ptr
ninoderkinderen 0:8d87bc453349 31
ninoderkinderen 0:8d87bc453349 32
ninoderkinderen 0:8d87bc453349 33
ninoderkinderen 0:8d87bc453349 34 */
ninoderkinderen 0:8d87bc453349 35
ninoderkinderen 0:8d87bc453349 36
ninoderkinderen 0:8d87bc453349 37 #include "netCfg.h"
ninoderkinderen 0:8d87bc453349 38 #if NET_PPP
ninoderkinderen 0:8d87bc453349 39
ninoderkinderen 0:8d87bc453349 40 //#define MAX_SERIAL_PORTS 8
ninoderkinderen 0:8d87bc453349 41
ninoderkinderen 0:8d87bc453349 42 #include "lwip/sio.h"
ninoderkinderen 0:8d87bc453349 43 #include "mbed.h"
ninoderkinderen 0:8d87bc453349 44 //#include "sioMgr.h"
ninoderkinderen 0:8d87bc453349 45 #include "drv/serial/buf/SerialBuf.h"
ninoderkinderen 0:8d87bc453349 46
ninoderkinderen 0:8d87bc453349 47 //#define __DEBUG
ninoderkinderen 0:8d87bc453349 48 #include "dbg/dbg.h"
ninoderkinderen 0:8d87bc453349 49
ninoderkinderen 0:8d87bc453349 50 //extern "C" {
ninoderkinderen 0:8d87bc453349 51
ninoderkinderen 0:8d87bc453349 52 /**
ninoderkinderen 0:8d87bc453349 53 * Opens a serial device for communication.
ninoderkinderen 0:8d87bc453349 54 *
ninoderkinderen 0:8d87bc453349 55 * @param devnum device number
ninoderkinderen 0:8d87bc453349 56 * @return handle to serial device if successful, NULL otherwise
ninoderkinderen 0:8d87bc453349 57 */
ninoderkinderen 0:8d87bc453349 58 sio_fd_t sio_open(u8_t devnum)
ninoderkinderen 0:8d87bc453349 59 {
ninoderkinderen 0:8d87bc453349 60 #if 0
ninoderkinderen 0:8d87bc453349 61 SerialBuf* pIf = SioMgr::getIf(devnum);
ninoderkinderen 0:8d87bc453349 62 if(pIf == NULL)
ninoderkinderen 0:8d87bc453349 63 return NULL;
ninoderkinderen 0:8d87bc453349 64
ninoderkinderen 0:8d87bc453349 65 //Got a SerialBuf* object
ninoderkinderen 0:8d87bc453349 66 //WARN: It HAS to be initialised (instanciated + attached to a Serial obj)
ninoderkinderen 0:8d87bc453349 67
ninoderkinderen 0:8d87bc453349 68 return (sio_fd_t) pIf;
ninoderkinderen 0:8d87bc453349 69 #endif
ninoderkinderen 0:8d87bc453349 70 return NULL;
ninoderkinderen 0:8d87bc453349 71 }
ninoderkinderen 0:8d87bc453349 72
ninoderkinderen 0:8d87bc453349 73 /**
ninoderkinderen 0:8d87bc453349 74 * Sends a single character to the serial device.
ninoderkinderen 0:8d87bc453349 75 *
ninoderkinderen 0:8d87bc453349 76 * @param c character to send
ninoderkinderen 0:8d87bc453349 77 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 78 *
ninoderkinderen 0:8d87bc453349 79 * @note This function will block until the character can be sent.
ninoderkinderen 0:8d87bc453349 80 */
ninoderkinderen 0:8d87bc453349 81 void sio_send(u8_t c, sio_fd_t fd)
ninoderkinderen 0:8d87bc453349 82 {
ninoderkinderen 0:8d87bc453349 83 SerialBuf* pIf = (SerialBuf*) fd;
ninoderkinderen 0:8d87bc453349 84 //while(!pIf->writeable());
ninoderkinderen 0:8d87bc453349 85 pIf->putc( (char) c );
ninoderkinderen 0:8d87bc453349 86 }
ninoderkinderen 0:8d87bc453349 87
ninoderkinderen 0:8d87bc453349 88 /**
ninoderkinderen 0:8d87bc453349 89 * Receives a single character from the serial device.
ninoderkinderen 0:8d87bc453349 90 *
ninoderkinderen 0:8d87bc453349 91 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 92 *
ninoderkinderen 0:8d87bc453349 93 * @note This function will block until a character is received.
ninoderkinderen 0:8d87bc453349 94 */
ninoderkinderen 0:8d87bc453349 95 u8_t sio_recv(sio_fd_t fd)
ninoderkinderen 0:8d87bc453349 96 {
ninoderkinderen 0:8d87bc453349 97 SerialBuf* pIf = (SerialBuf*) fd;
ninoderkinderen 0:8d87bc453349 98 pIf->setReadMode(false);
ninoderkinderen 0:8d87bc453349 99 while(!pIf->readable());
ninoderkinderen 0:8d87bc453349 100 return (u8_t) pIf->getc();
ninoderkinderen 0:8d87bc453349 101 }
ninoderkinderen 0:8d87bc453349 102
ninoderkinderen 0:8d87bc453349 103 /**
ninoderkinderen 0:8d87bc453349 104 * Reads from the serial device.
ninoderkinderen 0:8d87bc453349 105 *
ninoderkinderen 0:8d87bc453349 106 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 107 * @param data pointer to data buffer for receiving
ninoderkinderen 0:8d87bc453349 108 * @param len maximum length (in bytes) of data to receive
ninoderkinderen 0:8d87bc453349 109 * @return number of bytes actually received - may be 0 if aborted by sio_read_abort
ninoderkinderen 0:8d87bc453349 110 *
ninoderkinderen 0:8d87bc453349 111 * @note This function will block until data can be received. The blocking
ninoderkinderen 0:8d87bc453349 112 * can be cancelled by calling sio_read_abort().
ninoderkinderen 0:8d87bc453349 113 */
ninoderkinderen 0:8d87bc453349 114 static volatile bool m_abort = false;
ninoderkinderen 0:8d87bc453349 115 u32_t sio_read(sio_fd_t fd, u8_t *data, u32_t len)
ninoderkinderen 0:8d87bc453349 116 {
ninoderkinderen 0:8d87bc453349 117 u32_t recvd = 0; //bytes received
ninoderkinderen 0:8d87bc453349 118 SerialBuf* pIf = (SerialBuf*) fd;
ninoderkinderen 0:8d87bc453349 119 pIf->setReadMode(false);
ninoderkinderen 0:8d87bc453349 120 while(!m_abort && len)
ninoderkinderen 0:8d87bc453349 121 {
ninoderkinderen 0:8d87bc453349 122 while(!pIf->readable());
ninoderkinderen 0:8d87bc453349 123 *data = (u8_t) pIf->getc();
ninoderkinderen 0:8d87bc453349 124 data++;
ninoderkinderen 0:8d87bc453349 125 len--;
ninoderkinderen 0:8d87bc453349 126 recvd++;
ninoderkinderen 0:8d87bc453349 127 }
ninoderkinderen 0:8d87bc453349 128 m_abort = false;
ninoderkinderen 0:8d87bc453349 129 return recvd;
ninoderkinderen 0:8d87bc453349 130 }
ninoderkinderen 0:8d87bc453349 131
ninoderkinderen 0:8d87bc453349 132 /**
ninoderkinderen 0:8d87bc453349 133 * Tries to read from the serial device. Same as sio_read but returns
ninoderkinderen 0:8d87bc453349 134 * immediately if no data is available and never blocks.
ninoderkinderen 0:8d87bc453349 135 *
ninoderkinderen 0:8d87bc453349 136 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 137 * @param data pointer to data buffer for receiving
ninoderkinderen 0:8d87bc453349 138 * @param len maximum length (in bytes) of data to receive
ninoderkinderen 0:8d87bc453349 139 * @return number of bytes actually received
ninoderkinderen 0:8d87bc453349 140 */
ninoderkinderen 0:8d87bc453349 141 u32_t sio_tryread(sio_fd_t fd, u8_t *data, u32_t len)
ninoderkinderen 0:8d87bc453349 142 {
ninoderkinderen 0:8d87bc453349 143 u32_t recvd = 0; //bytes received
ninoderkinderen 0:8d87bc453349 144 SerialBuf* pIf = (SerialBuf*) fd;
ninoderkinderen 0:8d87bc453349 145 pIf->setReadMode(false);
ninoderkinderen 0:8d87bc453349 146 while(len)
ninoderkinderen 0:8d87bc453349 147 {
ninoderkinderen 0:8d87bc453349 148 /* if(!pIf->readable())
ninoderkinderen 0:8d87bc453349 149 {
ninoderkinderen 0:8d87bc453349 150 wait_ms(4);
ninoderkinderen 0:8d87bc453349 151 }*/
ninoderkinderen 0:8d87bc453349 152 if(!pIf->readable())
ninoderkinderen 0:8d87bc453349 153 {
ninoderkinderen 0:8d87bc453349 154 return recvd;
ninoderkinderen 0:8d87bc453349 155 }
ninoderkinderen 0:8d87bc453349 156 *data = (u8_t) pIf->getc();
ninoderkinderen 0:8d87bc453349 157 data++;
ninoderkinderen 0:8d87bc453349 158 len--;
ninoderkinderen 0:8d87bc453349 159 recvd++;
ninoderkinderen 0:8d87bc453349 160 }
ninoderkinderen 0:8d87bc453349 161 return recvd;
ninoderkinderen 0:8d87bc453349 162 }
ninoderkinderen 0:8d87bc453349 163
ninoderkinderen 0:8d87bc453349 164 /**
ninoderkinderen 0:8d87bc453349 165 * Writes to the serial device.
ninoderkinderen 0:8d87bc453349 166 *
ninoderkinderen 0:8d87bc453349 167 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 168 * @param data pointer to data to send
ninoderkinderen 0:8d87bc453349 169 * @param len length (in bytes) of data to send
ninoderkinderen 0:8d87bc453349 170 * @return number of bytes actually sent
ninoderkinderen 0:8d87bc453349 171 *
ninoderkinderen 0:8d87bc453349 172 * @note This function will block until all data can be sent.
ninoderkinderen 0:8d87bc453349 173 */
ninoderkinderen 0:8d87bc453349 174 u32_t sio_write(sio_fd_t fd, u8_t *data, u32_t len)
ninoderkinderen 0:8d87bc453349 175 {
ninoderkinderen 0:8d87bc453349 176 u32_t sent = 0; //bytes sent
ninoderkinderen 0:8d87bc453349 177 SerialBuf* pIf = (SerialBuf*) fd;
ninoderkinderen 0:8d87bc453349 178 while(len)
ninoderkinderen 0:8d87bc453349 179 {
ninoderkinderen 0:8d87bc453349 180 while(!pIf->writeable());
ninoderkinderen 0:8d87bc453349 181 pIf->putc(*data);
ninoderkinderen 0:8d87bc453349 182 data++;
ninoderkinderen 0:8d87bc453349 183 len--;
ninoderkinderen 0:8d87bc453349 184 sent++;
ninoderkinderen 0:8d87bc453349 185 }
ninoderkinderen 0:8d87bc453349 186 return sent; //Well, this is bound to be len if no interrupt mechanism
ninoderkinderen 0:8d87bc453349 187 }
ninoderkinderen 0:8d87bc453349 188
ninoderkinderen 0:8d87bc453349 189 /**
ninoderkinderen 0:8d87bc453349 190 * Aborts a blocking sio_read() call.
ninoderkinderen 0:8d87bc453349 191 *
ninoderkinderen 0:8d87bc453349 192 * @param fd serial device handle
ninoderkinderen 0:8d87bc453349 193 */
ninoderkinderen 0:8d87bc453349 194 void sio_read_abort(sio_fd_t fd)
ninoderkinderen 0:8d87bc453349 195 {
ninoderkinderen 0:8d87bc453349 196 m_abort = true;
ninoderkinderen 0:8d87bc453349 197 }
ninoderkinderen 0:8d87bc453349 198
ninoderkinderen 0:8d87bc453349 199 //}
ninoderkinderen 0:8d87bc453349 200
ninoderkinderen 0:8d87bc453349 201 #endif
ninoderkinderen 0:8d87bc453349 202