Vodafone K3770/K3772-Z modems driver & networking library
Dependencies: Socket USBHostWANDongle lwip-sys lwip
Dependents: VodafoneUSBModemHTTPClientTest VodafoneUSBModemNTPClientTest VodafoneUSBModemSMSTest VodafoneUSBModemUSSDTest ... more
Fork of VodafoneUSBModem_bleedingedge by
This is the driver for the Vodafone K3700 & K3772-Z Dongles:
More details and instructions can be found here.
ip/PPPIPInterface.cpp@12:66dc2c8eba2d, 2012-07-11 (annotated)
- Committer:
- donatien
- Date:
- Wed Jul 11 21:25:03 2012 +0000
- Revision:
- 12:66dc2c8eba2d
- Parent:
- 11:565b2ec40dea
- Child:
- 18:1789a11d1892
Link Monitoring / Dual serial port support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
donatien | 8:04b6a042595f | 1 | /* PPPIPInterface.cpp */ |
donatien | 8:04b6a042595f | 2 | /* |
donatien | 8:04b6a042595f | 3 | Copyright (C) 2012 ARM Limited. |
donatien | 8:04b6a042595f | 4 | |
donatien | 8:04b6a042595f | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy of |
donatien | 8:04b6a042595f | 6 | this software and associated documentation files (the "Software"), to deal in |
donatien | 8:04b6a042595f | 7 | the Software without restriction, including without limitation the rights to |
donatien | 8:04b6a042595f | 8 | use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
donatien | 8:04b6a042595f | 9 | of the Software, and to permit persons to whom the Software is furnished to do |
donatien | 8:04b6a042595f | 10 | so, subject to the following conditions: |
donatien | 8:04b6a042595f | 11 | |
donatien | 8:04b6a042595f | 12 | The above copyright notice and this permission notice shall be included in all |
donatien | 8:04b6a042595f | 13 | copies or substantial portions of the Software. |
donatien | 8:04b6a042595f | 14 | |
donatien | 8:04b6a042595f | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
donatien | 8:04b6a042595f | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
donatien | 8:04b6a042595f | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
donatien | 8:04b6a042595f | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
donatien | 8:04b6a042595f | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
donatien | 8:04b6a042595f | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
donatien | 8:04b6a042595f | 21 | SOFTWARE. |
donatien | 8:04b6a042595f | 22 | */ |
donatien | 8:04b6a042595f | 23 | |
donatien | 12:66dc2c8eba2d | 24 | #define MSISDN "*99#" |
donatien | 12:66dc2c8eba2d | 25 | |
donatien | 12:66dc2c8eba2d | 26 | #define CONNECT_CMD "ATD " MSISDN "\x0D" |
donatien | 12:66dc2c8eba2d | 27 | #define EXPECTED_RESP CONNECT_CMD "\x0D" "\x0A" "CONNECT" "\x0D" "\x0A" |
donatien | 12:66dc2c8eba2d | 28 | #define OK_RESP |
donatien | 12:66dc2c8eba2d | 29 | |
donatien | 12:66dc2c8eba2d | 30 | #define __DEBUG__ 0 //Maximum verbosity |
donatien | 8:04b6a042595f | 31 | #ifndef __MODULE__ |
donatien | 8:04b6a042595f | 32 | #define __MODULE__ "PPPIPInterface.cpp" |
donatien | 8:04b6a042595f | 33 | #endif |
donatien | 8:04b6a042595f | 34 | |
donatien | 8:04b6a042595f | 35 | #include "core/fwk.h" |
donatien | 8:04b6a042595f | 36 | #include "rtos.h" |
donatien | 8:04b6a042595f | 37 | |
donatien | 8:04b6a042595f | 38 | #include "PPPIPInterface.h" |
donatien | 8:04b6a042595f | 39 | |
donatien | 8:04b6a042595f | 40 | extern "C" { |
donatien | 8:04b6a042595f | 41 | #include "lwip/ip_addr.h" |
donatien | 8:04b6a042595f | 42 | #include "lwip/inet.h" |
donatien | 8:04b6a042595f | 43 | #include "netif/ppp/ppp.h" |
donatien | 8:04b6a042595f | 44 | } |
donatien | 8:04b6a042595f | 45 | |
donatien | 8:04b6a042595f | 46 | PPPIPInterface::PPPIPInterface(IOStream* pStream) : LwIPInterface(), m_linkStatusSphre(1), m_pppErrCode(0), m_pStream(pStream), m_streamAvail(true), m_pppd(-1) |
donatien | 8:04b6a042595f | 47 | { |
donatien | 8:04b6a042595f | 48 | m_linkStatusSphre.wait(); |
donatien | 8:04b6a042595f | 49 | } |
donatien | 8:04b6a042595f | 50 | |
donatien | 8:04b6a042595f | 51 | /*virtual*/ PPPIPInterface::~PPPIPInterface() |
donatien | 8:04b6a042595f | 52 | { |
donatien | 8:04b6a042595f | 53 | |
donatien | 8:04b6a042595f | 54 | } |
donatien | 8:04b6a042595f | 55 | |
donatien | 8:04b6a042595f | 56 | /*virtual*/ int PPPIPInterface::init() //Init PPP-specific stuff, create the right bindings, etc |
donatien | 8:04b6a042595f | 57 | { |
donatien | 8:04b6a042595f | 58 | DBG("Initializing LwIP"); |
donatien | 8:04b6a042595f | 59 | LwIPInterface::init(); //Init LwIP, NOT including PPP |
donatien | 8:04b6a042595f | 60 | DBG("Initializing PPP"); |
donatien | 8:04b6a042595f | 61 | pppInit(); |
donatien | 8:04b6a042595f | 62 | DBG("Done"); |
donatien | 8:04b6a042595f | 63 | return OK; |
donatien | 8:04b6a042595f | 64 | } |
donatien | 8:04b6a042595f | 65 | |
donatien | 8:04b6a042595f | 66 | int PPPIPInterface::setup(const char* user, const char* pw) |
donatien | 8:04b6a042595f | 67 | { |
donatien | 8:04b6a042595f | 68 | DBG("Configuring PPP authentication method"); |
donatien | 8:04b6a042595f | 69 | pppSetAuth(PPPAUTHTYPE_ANY, user, pw); |
donatien | 8:04b6a042595f | 70 | DBG("Done"); |
donatien | 8:04b6a042595f | 71 | return OK; |
donatien | 8:04b6a042595f | 72 | } |
donatien | 8:04b6a042595f | 73 | |
donatien | 12:66dc2c8eba2d | 74 | /*virtual*/ int PPPIPInterface::connect() |
donatien | 8:04b6a042595f | 75 | { |
donatien | 9:3f077dde13c9 | 76 | int ret; |
donatien | 9:3f077dde13c9 | 77 | char buf[32]; |
donatien | 9:3f077dde13c9 | 78 | size_t len; |
donatien | 8:04b6a042595f | 79 | DBG("Trying to connect with PPP"); |
donatien | 9:3f077dde13c9 | 80 | |
donatien | 9:3f077dde13c9 | 81 | do //Clear buf |
donatien | 9:3f077dde13c9 | 82 | { |
donatien | 12:66dc2c8eba2d | 83 | ret = m_pStream->read((uint8_t*)buf, &len, 32, 0); |
donatien | 9:3f077dde13c9 | 84 | } while( (ret == OK) && (len > 0) ); |
donatien | 9:3f077dde13c9 | 85 | |
donatien | 12:66dc2c8eba2d | 86 | DBG("Sending %s", CONNECT_CMD); |
donatien | 9:3f077dde13c9 | 87 | |
donatien | 12:66dc2c8eba2d | 88 | ret = m_pStream->write((uint8_t*)CONNECT_CMD, strlen(CONNECT_CMD), osWaitForever); |
donatien | 9:3f077dde13c9 | 89 | if( ret != OK ) |
donatien | 9:3f077dde13c9 | 90 | { |
donatien | 9:3f077dde13c9 | 91 | return NET_UNKNOWN; |
donatien | 9:3f077dde13c9 | 92 | } |
donatien | 9:3f077dde13c9 | 93 | |
donatien | 12:66dc2c8eba2d | 94 | DBG("Expect %s [len %d]", EXPECTED_RESP, strlen(EXPECTED_RESP)); |
donatien | 12:66dc2c8eba2d | 95 | |
donatien | 12:66dc2c8eba2d | 96 | len = 0; |
donatien | 12:66dc2c8eba2d | 97 | while(len < strlen(EXPECTED_RESP)) |
donatien | 9:3f077dde13c9 | 98 | { |
donatien | 12:66dc2c8eba2d | 99 | size_t readLen; |
donatien | 12:66dc2c8eba2d | 100 | ret = m_pStream->read((uint8_t*)buf + len, &readLen, strlen(EXPECTED_RESP) - len, 10000); |
donatien | 12:66dc2c8eba2d | 101 | if( ret != OK ) |
donatien | 12:66dc2c8eba2d | 102 | { |
donatien | 9:3f077dde13c9 | 103 | return NET_UNKNOWN; |
donatien | 12:66dc2c8eba2d | 104 | } |
donatien | 12:66dc2c8eba2d | 105 | len += readLen; |
donatien | 9:3f077dde13c9 | 106 | } |
donatien | 9:3f077dde13c9 | 107 | |
donatien | 12:66dc2c8eba2d | 108 | buf[len]=0; |
donatien | 12:66dc2c8eba2d | 109 | |
donatien | 12:66dc2c8eba2d | 110 | DBG("Got %s[len %d]", buf, len); |
donatien | 12:66dc2c8eba2d | 111 | |
donatien | 12:66dc2c8eba2d | 112 | if( memcmp(EXPECTED_RESP, buf, strlen(EXPECTED_RESP)) != 0 ) |
donatien | 9:3f077dde13c9 | 113 | { |
donatien | 9:3f077dde13c9 | 114 | //Discard buffer |
donatien | 9:3f077dde13c9 | 115 | do //Clear buf |
donatien | 9:3f077dde13c9 | 116 | { |
donatien | 12:66dc2c8eba2d | 117 | ret = m_pStream->read((uint8_t*)buf, &len, 32, 0); |
donatien | 9:3f077dde13c9 | 118 | } while( (ret == OK) && (len > 0) ); |
donatien | 9:3f077dde13c9 | 119 | return NET_CONN; |
donatien | 9:3f077dde13c9 | 120 | } |
donatien | 9:3f077dde13c9 | 121 | |
donatien | 9:3f077dde13c9 | 122 | DBG("Transport link open"); |
donatien | 8:04b6a042595f | 123 | m_linkStatusSphre.wait(0); |
donatien | 8:04b6a042595f | 124 | if((m_pppd != -1) && (m_pppErrCode == 0)) //Already connected |
donatien | 8:04b6a042595f | 125 | { |
donatien | 8:04b6a042595f | 126 | return NET_INVALID; |
donatien | 8:04b6a042595f | 127 | } |
donatien | 12:66dc2c8eba2d | 128 | |
donatien | 12:66dc2c8eba2d | 129 | ret = pppOverSerialOpen(this, PPPIPInterface::linkStatusCb, this); |
donatien | 8:04b6a042595f | 130 | if(ret < 0) |
donatien | 8:04b6a042595f | 131 | { |
donatien | 8:04b6a042595f | 132 | switch(ret) |
donatien | 8:04b6a042595f | 133 | { |
donatien | 8:04b6a042595f | 134 | case PPPERR_OPEN: |
donatien | 8:04b6a042595f | 135 | default: |
donatien | 8:04b6a042595f | 136 | return NET_FULL; //All available resources are already used |
donatien | 8:04b6a042595f | 137 | } |
donatien | 8:04b6a042595f | 138 | } |
donatien | 8:04b6a042595f | 139 | m_pppd = ret; //PPP descriptor |
donatien | 8:04b6a042595f | 140 | m_linkStatusSphre.wait(); //Block indefinitely; there should be a timeout there |
donatien | 8:04b6a042595f | 141 | if(m_pppErrCode != PPPERR_NONE) |
donatien | 8:04b6a042595f | 142 | { |
donatien | 8:04b6a042595f | 143 | m_pppd = -1; |
donatien | 8:04b6a042595f | 144 | } |
donatien | 8:04b6a042595f | 145 | switch(m_pppErrCode) |
donatien | 8:04b6a042595f | 146 | { |
donatien | 8:04b6a042595f | 147 | case PPPERR_NONE: //Connected OK |
donatien | 8:04b6a042595f | 148 | return OK; |
donatien | 8:04b6a042595f | 149 | case PPPERR_CONNECT: //Connection lost |
donatien | 8:04b6a042595f | 150 | return NET_INTERRUPTED; |
donatien | 8:04b6a042595f | 151 | case PPPERR_AUTHFAIL: //Authentication failed |
donatien | 8:04b6a042595f | 152 | return NET_AUTH; |
donatien | 8:04b6a042595f | 153 | case PPPERR_PROTOCOL: //Protocol error |
donatien | 8:04b6a042595f | 154 | return NET_PROTOCOL; |
donatien | 8:04b6a042595f | 155 | default: |
donatien | 8:04b6a042595f | 156 | return NET_UNKNOWN; |
donatien | 8:04b6a042595f | 157 | } |
donatien | 8:04b6a042595f | 158 | } |
donatien | 8:04b6a042595f | 159 | |
donatien | 8:04b6a042595f | 160 | /*virtual*/ int PPPIPInterface::disconnect() |
donatien | 8:04b6a042595f | 161 | { |
donatien | 8:04b6a042595f | 162 | int ret = m_linkStatusSphre.wait(0); |
donatien | 8:04b6a042595f | 163 | if(ret > 0) //Already disconnected? |
donatien | 8:04b6a042595f | 164 | { |
donatien | 8:04b6a042595f | 165 | m_pppd = -1; //Discard PPP descriptor |
donatien | 8:04b6a042595f | 166 | switch(m_pppErrCode) |
donatien | 8:04b6a042595f | 167 | { |
donatien | 8:04b6a042595f | 168 | case PPPERR_CONNECT: //Connection terminated |
donatien | 8:04b6a042595f | 169 | case PPPERR_AUTHFAIL: //Authentication failed |
donatien | 8:04b6a042595f | 170 | case PPPERR_PROTOCOL: //Protocol error |
donatien | 8:04b6a042595f | 171 | case PPPERR_USER: |
donatien | 8:04b6a042595f | 172 | return OK; |
donatien | 8:04b6a042595f | 173 | default: |
donatien | 8:04b6a042595f | 174 | return NET_UNKNOWN; |
donatien | 8:04b6a042595f | 175 | } |
donatien | 8:04b6a042595f | 176 | } |
donatien | 8:04b6a042595f | 177 | else |
donatien | 8:04b6a042595f | 178 | { |
donatien | 8:04b6a042595f | 179 | if(m_pppd == -1) |
donatien | 8:04b6a042595f | 180 | { |
donatien | 8:04b6a042595f | 181 | return NET_INVALID; |
donatien | 8:04b6a042595f | 182 | } |
donatien | 8:04b6a042595f | 183 | pppClose(m_pppd); |
donatien | 8:04b6a042595f | 184 | do |
donatien | 8:04b6a042595f | 185 | { |
donatien | 8:04b6a042595f | 186 | m_linkStatusSphre.wait(); //Block indefinitely; there should be a timeout there |
donatien | 8:04b6a042595f | 187 | DBG("Received PPP err code %d", m_pppErrCode); |
donatien | 8:04b6a042595f | 188 | } while(m_pppErrCode != PPPERR_USER); |
donatien | 8:04b6a042595f | 189 | m_pppd = -1; //Discard PPP descriptor |
donatien | 8:04b6a042595f | 190 | } |
donatien | 8:04b6a042595f | 191 | return OK; |
donatien | 8:04b6a042595f | 192 | } |
donatien | 8:04b6a042595f | 193 | |
donatien | 8:04b6a042595f | 194 | /*static*/ void PPPIPInterface::linkStatusCb(void *ctx, int errCode, void *arg) //PPP link status |
donatien | 8:04b6a042595f | 195 | { |
donatien | 8:04b6a042595f | 196 | PPPIPInterface* pIf = (PPPIPInterface*)ctx; |
donatien | 8:04b6a042595f | 197 | struct ppp_addrs* addrs = (struct ppp_addrs*) arg; |
donatien | 8:04b6a042595f | 198 | |
donatien | 8:04b6a042595f | 199 | switch(errCode) |
donatien | 8:04b6a042595f | 200 | { |
donatien | 8:04b6a042595f | 201 | case PPPERR_NONE: |
donatien | 8:04b6a042595f | 202 | WARN("Connected via PPP."); |
donatien | 8:04b6a042595f | 203 | DBG("Local IP address: %s", inet_ntoa(addrs->our_ipaddr)); |
donatien | 8:04b6a042595f | 204 | DBG("Netmask: %s", inet_ntoa(addrs->netmask)); |
donatien | 8:04b6a042595f | 205 | DBG("Remote IP address: %s", inet_ntoa(addrs->his_ipaddr)); |
donatien | 8:04b6a042595f | 206 | DBG("Primary DNS: %s", inet_ntoa(addrs->dns1)); |
donatien | 8:04b6a042595f | 207 | DBG("Secondary DNS: %s", inet_ntoa(addrs->dns2)); |
donatien | 10:21a6f09d5631 | 208 | pIf->setConnected(true); |
donatien | 10:21a6f09d5631 | 209 | pIf->setIPAddress(inet_ntoa(addrs->our_ipaddr)); |
donatien | 8:04b6a042595f | 210 | break; |
donatien | 8:04b6a042595f | 211 | case PPPERR_CONNECT: //Connection lost |
donatien | 8:04b6a042595f | 212 | WARN("Connection lost/terminated"); |
donatien | 10:21a6f09d5631 | 213 | pIf->setConnected(false); |
donatien | 8:04b6a042595f | 214 | break; |
donatien | 8:04b6a042595f | 215 | case PPPERR_AUTHFAIL: //Authentication failed |
donatien | 8:04b6a042595f | 216 | WARN("Authentication failed"); |
donatien | 10:21a6f09d5631 | 217 | pIf->setConnected(false); |
donatien | 8:04b6a042595f | 218 | break; |
donatien | 8:04b6a042595f | 219 | case PPPERR_PROTOCOL: //Protocol error |
donatien | 8:04b6a042595f | 220 | WARN("Protocol error"); |
donatien | 10:21a6f09d5631 | 221 | pIf->setConnected(false); |
donatien | 8:04b6a042595f | 222 | break; |
donatien | 8:04b6a042595f | 223 | case PPPERR_USER: |
donatien | 8:04b6a042595f | 224 | WARN("Disconnected by user"); |
donatien | 10:21a6f09d5631 | 225 | pIf->setConnected(false); |
donatien | 8:04b6a042595f | 226 | break; |
donatien | 8:04b6a042595f | 227 | default: |
donatien | 8:04b6a042595f | 228 | WARN("Unknown error (%d)", errCode); |
donatien | 10:21a6f09d5631 | 229 | pIf->setConnected(false); |
donatien | 8:04b6a042595f | 230 | break; |
donatien | 8:04b6a042595f | 231 | } |
donatien | 8:04b6a042595f | 232 | |
donatien | 8:04b6a042595f | 233 | pIf->m_linkStatusSphre.wait(0); //If previous event has not been handled, "delete" it now |
donatien | 8:04b6a042595f | 234 | pIf->m_pppErrCode = errCode; |
donatien | 8:04b6a042595f | 235 | pIf->m_linkStatusSphre.release(); |
donatien | 8:04b6a042595f | 236 | } |
donatien | 8:04b6a042595f | 237 | |
donatien | 8:04b6a042595f | 238 | //LwIP PPP implementation |
donatien | 8:04b6a042595f | 239 | extern "C" |
donatien | 8:04b6a042595f | 240 | { |
donatien | 8:04b6a042595f | 241 | |
donatien | 8:04b6a042595f | 242 | /** |
donatien | 8:04b6a042595f | 243 | * Writes to the serial device. |
donatien | 8:04b6a042595f | 244 | * |
donatien | 8:04b6a042595f | 245 | * @param fd serial device handle |
donatien | 8:04b6a042595f | 246 | * @param data pointer to data to send |
donatien | 8:04b6a042595f | 247 | * @param len length (in bytes) of data to send |
donatien | 8:04b6a042595f | 248 | * @return number of bytes actually sent |
donatien | 8:04b6a042595f | 249 | * |
donatien | 8:04b6a042595f | 250 | * @note This function will block until all data can be sent. |
donatien | 8:04b6a042595f | 251 | */ |
donatien | 8:04b6a042595f | 252 | u32_t sio_write(sio_fd_t fd, u8_t *data, u32_t len) |
donatien | 8:04b6a042595f | 253 | { |
donatien | 8:04b6a042595f | 254 | DBG("sio_write"); |
donatien | 8:04b6a042595f | 255 | PPPIPInterface* pIf = (PPPIPInterface*)fd; |
donatien | 8:04b6a042595f | 256 | int ret; |
donatien | 8:04b6a042595f | 257 | if(!pIf->m_streamAvail) //If stream is not available (it is a shared resource) don't go further |
donatien | 8:04b6a042595f | 258 | { |
donatien | 8:04b6a042595f | 259 | return 0; |
donatien | 8:04b6a042595f | 260 | } |
donatien | 8:04b6a042595f | 261 | ret = pIf->m_pStream->write(data, len, osWaitForever); //Blocks until all data is sent or an error happens |
donatien | 8:04b6a042595f | 262 | if(ret != OK) |
donatien | 8:04b6a042595f | 263 | { |
donatien | 8:04b6a042595f | 264 | return 0; |
donatien | 8:04b6a042595f | 265 | } |
donatien | 8:04b6a042595f | 266 | return len; |
donatien | 8:04b6a042595f | 267 | } |
donatien | 8:04b6a042595f | 268 | |
donatien | 8:04b6a042595f | 269 | /** |
donatien | 8:04b6a042595f | 270 | * Reads from the serial device. |
donatien | 8:04b6a042595f | 271 | * |
donatien | 8:04b6a042595f | 272 | * @param fd serial device handle |
donatien | 8:04b6a042595f | 273 | * @param data pointer to data buffer for receiving |
donatien | 8:04b6a042595f | 274 | * @param len maximum length (in bytes) of data to receive |
donatien | 8:04b6a042595f | 275 | * @return number of bytes actually received - may be 0 if aborted by sio_read_abort |
donatien | 8:04b6a042595f | 276 | * |
donatien | 8:04b6a042595f | 277 | * @note This function will block until data can be received. The blocking |
donatien | 8:04b6a042595f | 278 | * can be cancelled by calling sio_read_abort(). |
donatien | 8:04b6a042595f | 279 | */ |
donatien | 8:04b6a042595f | 280 | u32_t sio_read(sio_fd_t fd, u8_t *data, u32_t len) |
donatien | 8:04b6a042595f | 281 | { |
donatien | 8:04b6a042595f | 282 | DBG("sio_read"); |
donatien | 8:04b6a042595f | 283 | PPPIPInterface* pIf = (PPPIPInterface*)fd; |
donatien | 8:04b6a042595f | 284 | int ret; |
donatien | 8:04b6a042595f | 285 | size_t readLen; |
donatien | 8:04b6a042595f | 286 | if(!pIf->m_streamAvail) //If stream is not available (it is a shared resource) don't go further |
donatien | 8:04b6a042595f | 287 | { |
donatien | 8:04b6a042595f | 288 | WARN("EXIT NOT AVAIL"); |
donatien | 8:04b6a042595f | 289 | return 0; |
donatien | 8:04b6a042595f | 290 | } |
donatien | 8:04b6a042595f | 291 | ret = pIf->m_pStream->read(data, &readLen, len, osWaitForever); //Blocks until some data is received or an error happens |
donatien | 8:04b6a042595f | 292 | if(ret != OK) |
donatien | 8:04b6a042595f | 293 | { |
donatien | 8:04b6a042595f | 294 | return 0; |
donatien | 8:04b6a042595f | 295 | } |
donatien | 8:04b6a042595f | 296 | DBG("ret"); |
donatien | 8:04b6a042595f | 297 | return readLen; |
donatien | 8:04b6a042595f | 298 | } |
donatien | 8:04b6a042595f | 299 | |
donatien | 8:04b6a042595f | 300 | /** |
donatien | 8:04b6a042595f | 301 | * Aborts a blocking sio_read() call. |
donatien | 8:04b6a042595f | 302 | * |
donatien | 8:04b6a042595f | 303 | * @param fd serial device handle |
donatien | 8:04b6a042595f | 304 | */ |
donatien | 8:04b6a042595f | 305 | void sio_read_abort(sio_fd_t fd) |
donatien | 8:04b6a042595f | 306 | { |
donatien | 8:04b6a042595f | 307 | DBG("sio_read_abort"); |
donatien | 8:04b6a042595f | 308 | PPPIPInterface* pIf = (PPPIPInterface*)fd; |
donatien | 8:04b6a042595f | 309 | if(!pIf->m_streamAvail) //If stream is not available (it is a shared resource) don't go further |
donatien | 8:04b6a042595f | 310 | { |
donatien | 8:04b6a042595f | 311 | return; |
donatien | 8:04b6a042595f | 312 | } |
donatien | 8:04b6a042595f | 313 | pIf->m_pStream->abortRead(); |
donatien | 8:04b6a042595f | 314 | DBG("ret"); |
donatien | 8:04b6a042595f | 315 | } |
donatien | 8:04b6a042595f | 316 | |
donatien | 8:04b6a042595f | 317 | } |
donatien | 8:04b6a042595f | 318 |