joshua Elsdon / Mbed 2 deprecated Email2Screen

Mac addr added ICRS

Dependencies:   mbed

Fork of Email2Screen by Oliver Mattos

NetServicesProxy/drv/serial/lwip/sio.cpp@1:b38b745d1ea8, 2013-11-20 (annotated)

Committer:
je310
Date:
Wed Nov 20 21:22:22 2013 +0000
Revision:
1:b38b745d1ea8
Parent:
0:1619a6b826d7 
This is a maced version of olivers code ICRS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Hello1024 0:1619a6b826d7 1
Hello1024 0:1619a6b826d7 2 /*
Hello1024 0:1619a6b826d7 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Hello1024 0:1619a6b826d7 4
Hello1024 0:1619a6b826d7 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Hello1024 0:1619a6b826d7 6 of this software and associated documentation files (the "Software"), to deal
Hello1024 0:1619a6b826d7 7 in the Software without restriction, including without limitation the rights
Hello1024 0:1619a6b826d7 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Hello1024 0:1619a6b826d7 9 copies of the Software, and to permit persons to whom the Software is
Hello1024 0:1619a6b826d7 10 furnished to do so, subject to the following conditions:
Hello1024 0:1619a6b826d7 11
Hello1024 0:1619a6b826d7 12 The above copyright notice and this permission notice shall be included in
Hello1024 0:1619a6b826d7 13 all copies or substantial portions of the Software.
Hello1024 0:1619a6b826d7 14
Hello1024 0:1619a6b826d7 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Hello1024 0:1619a6b826d7 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Hello1024 0:1619a6b826d7 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Hello1024 0:1619a6b826d7 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Hello1024 0:1619a6b826d7 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Hello1024 0:1619a6b826d7 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Hello1024 0:1619a6b826d7 21 THE SOFTWARE.
Hello1024 0:1619a6b826d7 22 */
Hello1024 0:1619a6b826d7 23
Hello1024 0:1619a6b826d7 24 /*
Hello1024 0:1619a6b826d7 25
Hello1024 0:1619a6b826d7 26 This is a wrapper around Serial if for lwIP (acts as a serial driver)
Hello1024 0:1619a6b826d7 27
Hello1024 0:1619a6b826d7 28 See sio.h for functions to be implemented
Hello1024 0:1619a6b826d7 29
Hello1024 0:1619a6b826d7 30 sio_fd_t is a void* defined type, we use it as a SerialBuf ptr
Hello1024 0:1619a6b826d7 31
Hello1024 0:1619a6b826d7 32
Hello1024 0:1619a6b826d7 33
Hello1024 0:1619a6b826d7 34 */
Hello1024 0:1619a6b826d7 35
Hello1024 0:1619a6b826d7 36
Hello1024 0:1619a6b826d7 37 #include "netCfg.h"
Hello1024 0:1619a6b826d7 38 #if NET_PPP
Hello1024 0:1619a6b826d7 39
Hello1024 0:1619a6b826d7 40 //#define MAX_SERIAL_PORTS 8
Hello1024 0:1619a6b826d7 41
Hello1024 0:1619a6b826d7 42 #include "lwip/sio.h"
Hello1024 0:1619a6b826d7 43 #include "mbed.h"
Hello1024 0:1619a6b826d7 44 //#include "sioMgr.h"
Hello1024 0:1619a6b826d7 45 #include "drv/serial/buf/SerialBuf.h"
Hello1024 0:1619a6b826d7 46
Hello1024 0:1619a6b826d7 47 //#define __DEBUG
Hello1024 0:1619a6b826d7 48 #include "dbg/dbg.h"
Hello1024 0:1619a6b826d7 49
Hello1024 0:1619a6b826d7 50 //extern "C" {
Hello1024 0:1619a6b826d7 51
Hello1024 0:1619a6b826d7 52 /**
Hello1024 0:1619a6b826d7 53 * Opens a serial device for communication.
Hello1024 0:1619a6b826d7 54 *
Hello1024 0:1619a6b826d7 55 * @param devnum device number
Hello1024 0:1619a6b826d7 56 * @return handle to serial device if successful, NULL otherwise
Hello1024 0:1619a6b826d7 57 */
Hello1024 0:1619a6b826d7 58 sio_fd_t sio_open(u8_t devnum)
Hello1024 0:1619a6b826d7 59 {
Hello1024 0:1619a6b826d7 60 #if 0
Hello1024 0:1619a6b826d7 61 SerialBuf* pIf = SioMgr::getIf(devnum);
Hello1024 0:1619a6b826d7 62 if(pIf == NULL)
Hello1024 0:1619a6b826d7 63 return NULL;
Hello1024 0:1619a6b826d7 64
Hello1024 0:1619a6b826d7 65 //Got a SerialBuf* object
Hello1024 0:1619a6b826d7 66 //WARN: It HAS to be initialised (instanciated + attached to a Serial obj)
Hello1024 0:1619a6b826d7 67
Hello1024 0:1619a6b826d7 68 return (sio_fd_t) pIf;
Hello1024 0:1619a6b826d7 69 #endif
Hello1024 0:1619a6b826d7 70 return NULL;
Hello1024 0:1619a6b826d7 71 }
Hello1024 0:1619a6b826d7 72
Hello1024 0:1619a6b826d7 73 /**
Hello1024 0:1619a6b826d7 74 * Sends a single character to the serial device.
Hello1024 0:1619a6b826d7 75 *
Hello1024 0:1619a6b826d7 76 * @param c character to send
Hello1024 0:1619a6b826d7 77 * @param fd serial device handle
Hello1024 0:1619a6b826d7 78 *
Hello1024 0:1619a6b826d7 79 * @note This function will block until the character can be sent.
Hello1024 0:1619a6b826d7 80 */
Hello1024 0:1619a6b826d7 81 void sio_send(u8_t c, sio_fd_t fd)
Hello1024 0:1619a6b826d7 82 {
Hello1024 0:1619a6b826d7 83 SerialBuf* pIf = (SerialBuf*) fd;
Hello1024 0:1619a6b826d7 84 //while(!pIf->writeable());
Hello1024 0:1619a6b826d7 85 pIf->putc( (char) c );
Hello1024 0:1619a6b826d7 86 }
Hello1024 0:1619a6b826d7 87
Hello1024 0:1619a6b826d7 88 /**
Hello1024 0:1619a6b826d7 89 * Receives a single character from the serial device.
Hello1024 0:1619a6b826d7 90 *
Hello1024 0:1619a6b826d7 91 * @param fd serial device handle
Hello1024 0:1619a6b826d7 92 *
Hello1024 0:1619a6b826d7 93 * @note This function will block until a character is received.
Hello1024 0:1619a6b826d7 94 */
Hello1024 0:1619a6b826d7 95 u8_t sio_recv(sio_fd_t fd)
Hello1024 0:1619a6b826d7 96 {
Hello1024 0:1619a6b826d7 97 SerialBuf* pIf = (SerialBuf*) fd;
Hello1024 0:1619a6b826d7 98 pIf->setReadMode(false);
Hello1024 0:1619a6b826d7 99 while(!pIf->readable());
Hello1024 0:1619a6b826d7 100 return (u8_t) pIf->getc();
Hello1024 0:1619a6b826d7 101 }
Hello1024 0:1619a6b826d7 102
Hello1024 0:1619a6b826d7 103 /**
Hello1024 0:1619a6b826d7 104 * Reads from the serial device.
Hello1024 0:1619a6b826d7 105 *
Hello1024 0:1619a6b826d7 106 * @param fd serial device handle
Hello1024 0:1619a6b826d7 107 * @param data pointer to data buffer for receiving
Hello1024 0:1619a6b826d7 108 * @param len maximum length (in bytes) of data to receive
Hello1024 0:1619a6b826d7 109 * @return number of bytes actually received - may be 0 if aborted by sio_read_abort
Hello1024 0:1619a6b826d7 110 *
Hello1024 0:1619a6b826d7 111 * @note This function will block until data can be received. The blocking
Hello1024 0:1619a6b826d7 112 * can be cancelled by calling sio_read_abort().
Hello1024 0:1619a6b826d7 113 */
Hello1024 0:1619a6b826d7 114 static volatile bool m_abort = false;
Hello1024 0:1619a6b826d7 115 u32_t sio_read(sio_fd_t fd, u8_t *data, u32_t len)
Hello1024 0:1619a6b826d7 116 {
Hello1024 0:1619a6b826d7 117 u32_t recvd = 0; //bytes received
Hello1024 0:1619a6b826d7 118 SerialBuf* pIf = (SerialBuf*) fd;
Hello1024 0:1619a6b826d7 119 pIf->setReadMode(false);
Hello1024 0:1619a6b826d7 120 while(!m_abort && len)
Hello1024 0:1619a6b826d7 121 {
Hello1024 0:1619a6b826d7 122 while(!pIf->readable());
Hello1024 0:1619a6b826d7 123 *data = (u8_t) pIf->getc();
Hello1024 0:1619a6b826d7 124 data++;
Hello1024 0:1619a6b826d7 125 len--;
Hello1024 0:1619a6b826d7 126 recvd++;
Hello1024 0:1619a6b826d7 127 }
Hello1024 0:1619a6b826d7 128 m_abort = false;
Hello1024 0:1619a6b826d7 129 return recvd;
Hello1024 0:1619a6b826d7 130 }
Hello1024 0:1619a6b826d7 131
Hello1024 0:1619a6b826d7 132 /**
Hello1024 0:1619a6b826d7 133 * Tries to read from the serial device. Same as sio_read but returns
Hello1024 0:1619a6b826d7 134 * immediately if no data is available and never blocks.
Hello1024 0:1619a6b826d7 135 *
Hello1024 0:1619a6b826d7 136 * @param fd serial device handle
Hello1024 0:1619a6b826d7 137 * @param data pointer to data buffer for receiving
Hello1024 0:1619a6b826d7 138 * @param len maximum length (in bytes) of data to receive
Hello1024 0:1619a6b826d7 139 * @return number of bytes actually received
Hello1024 0:1619a6b826d7 140 */
Hello1024 0:1619a6b826d7 141 u32_t sio_tryread(sio_fd_t fd, u8_t *data, u32_t len)
Hello1024 0:1619a6b826d7 142 {
Hello1024 0:1619a6b826d7 143 u32_t recvd = 0; //bytes received
Hello1024 0:1619a6b826d7 144 SerialBuf* pIf = (SerialBuf*) fd;
Hello1024 0:1619a6b826d7 145 pIf->setReadMode(false);
Hello1024 0:1619a6b826d7 146 while(len)
Hello1024 0:1619a6b826d7 147 {
Hello1024 0:1619a6b826d7 148 /* if(!pIf->readable())
Hello1024 0:1619a6b826d7 149 {
Hello1024 0:1619a6b826d7 150 wait_ms(4);
Hello1024 0:1619a6b826d7 151 }*/
Hello1024 0:1619a6b826d7 152 if(!pIf->readable())
Hello1024 0:1619a6b826d7 153 {
Hello1024 0:1619a6b826d7 154 return recvd;
Hello1024 0:1619a6b826d7 155 }
Hello1024 0:1619a6b826d7 156 *data = (u8_t) pIf->getc();
Hello1024 0:1619a6b826d7 157 data++;
Hello1024 0:1619a6b826d7 158 len--;
Hello1024 0:1619a6b826d7 159 recvd++;
Hello1024 0:1619a6b826d7 160 }
Hello1024 0:1619a6b826d7 161 return recvd;
Hello1024 0:1619a6b826d7 162 }
Hello1024 0:1619a6b826d7 163
Hello1024 0:1619a6b826d7 164 /**
Hello1024 0:1619a6b826d7 165 * Writes to the serial device.
Hello1024 0:1619a6b826d7 166 *
Hello1024 0:1619a6b826d7 167 * @param fd serial device handle
Hello1024 0:1619a6b826d7 168 * @param data pointer to data to send
Hello1024 0:1619a6b826d7 169 * @param len length (in bytes) of data to send
Hello1024 0:1619a6b826d7 170 * @return number of bytes actually sent
Hello1024 0:1619a6b826d7 171 *
Hello1024 0:1619a6b826d7 172 * @note This function will block until all data can be sent.
Hello1024 0:1619a6b826d7 173 */
Hello1024 0:1619a6b826d7 174 u32_t sio_write(sio_fd_t fd, u8_t *data, u32_t len)
Hello1024 0:1619a6b826d7 175 {
Hello1024 0:1619a6b826d7 176 u32_t sent = 0; //bytes sent
Hello1024 0:1619a6b826d7 177 SerialBuf* pIf = (SerialBuf*) fd;
Hello1024 0:1619a6b826d7 178 while(len)
Hello1024 0:1619a6b826d7 179 {
Hello1024 0:1619a6b826d7 180 while(!pIf->writeable());
Hello1024 0:1619a6b826d7 181 pIf->putc(*data);
Hello1024 0:1619a6b826d7 182 data++;
Hello1024 0:1619a6b826d7 183 len--;
Hello1024 0:1619a6b826d7 184 sent++;
Hello1024 0:1619a6b826d7 185 }
Hello1024 0:1619a6b826d7 186 return sent; //Well, this is bound to be len if no interrupt mechanism
Hello1024 0:1619a6b826d7 187 }
Hello1024 0:1619a6b826d7 188
Hello1024 0:1619a6b826d7 189 /**
Hello1024 0:1619a6b826d7 190 * Aborts a blocking sio_read() call.
Hello1024 0:1619a6b826d7 191 *
Hello1024 0:1619a6b826d7 192 * @param fd serial device handle
Hello1024 0:1619a6b826d7 193 */
Hello1024 0:1619a6b826d7 194 void sio_read_abort(sio_fd_t fd)
Hello1024 0:1619a6b826d7 195 {
Hello1024 0:1619a6b826d7 196 m_abort = true;
Hello1024 0:1619a6b826d7 197 }
Hello1024 0:1619a6b826d7 198
Hello1024 0:1619a6b826d7 199 //}
Hello1024 0:1619a6b826d7 200
Hello1024 0:1619a6b826d7 201 #endif
Hello1024 0:1619a6b826d7 202