Yann Garcia / Mbed 2 deprecated DS130x_I2CApp

This short program illustrates how to use the DS130x_I2C library. My objective is to share the same RTC with Microchip 18F MCU.

Dependencies:   mbed DebugLibrary

NetServices/lwip/core/timers.c@1:995212d326ca, 2011-02-11 (annotated)

Committer:
Yann
Date:
Fri Feb 11 10:17:20 2011 +0000
Revision:
1:995212d326ca
Parent:
0:f30e2135b0db 
V0.0.0.2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Yann 0:f30e2135b0db 1 /**
Yann 0:f30e2135b0db 2 * @file
Yann 0:f30e2135b0db 3 * Stack-internal timers implementation.
Yann 0:f30e2135b0db 4 * This file includes timer callbacks for stack-internal timers as well as
Yann 0:f30e2135b0db 5 * functions to set up or stop timers and check for expired timers.
Yann 0:f30e2135b0db 6 *
Yann 0:f30e2135b0db 7 */
Yann 0:f30e2135b0db 8
Yann 0:f30e2135b0db 9 /*
Yann 0:f30e2135b0db 10 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
Yann 0:f30e2135b0db 11 * All rights reserved.
Yann 0:f30e2135b0db 12 *
Yann 0:f30e2135b0db 13 * Redistribution and use in source and binary forms, with or without modification,
Yann 0:f30e2135b0db 14 * are permitted provided that the following conditions are met:
Yann 0:f30e2135b0db 15 *
Yann 0:f30e2135b0db 16 * 1. Redistributions of source code must retain the above copyright notice,
Yann 0:f30e2135b0db 17 * this list of conditions and the following disclaimer.
Yann 0:f30e2135b0db 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
Yann 0:f30e2135b0db 19 * this list of conditions and the following disclaimer in the documentation
Yann 0:f30e2135b0db 20 * and/or other materials provided with the distribution.
Yann 0:f30e2135b0db 21 * 3. The name of the author may not be used to endorse or promote products
Yann 0:f30e2135b0db 22 * derived from this software without specific prior written permission.
Yann 0:f30e2135b0db 23 *
Yann 0:f30e2135b0db 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
Yann 0:f30e2135b0db 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
Yann 0:f30e2135b0db 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
Yann 0:f30e2135b0db 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
Yann 0:f30e2135b0db 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
Yann 0:f30e2135b0db 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Yann 0:f30e2135b0db 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Yann 0:f30e2135b0db 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
Yann 0:f30e2135b0db 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
Yann 0:f30e2135b0db 33 * OF SUCH DAMAGE.
Yann 0:f30e2135b0db 34 *
Yann 0:f30e2135b0db 35 * This file is part of the lwIP TCP/IP stack.
Yann 0:f30e2135b0db 36 *
Yann 0:f30e2135b0db 37 * Author: Adam Dunkels <adam@sics.se>
Yann 0:f30e2135b0db 38 * Simon Goldschmidt
Yann 0:f30e2135b0db 39 *
Yann 0:f30e2135b0db 40 */
Yann 0:f30e2135b0db 41
Yann 0:f30e2135b0db 42 #include "lwip/opt.h"
Yann 0:f30e2135b0db 43
Yann 0:f30e2135b0db 44 #include "lwip/timers.h"
Yann 0:f30e2135b0db 45
Yann 0:f30e2135b0db 46 #if LWIP_TIMERS
Yann 0:f30e2135b0db 47
Yann 0:f30e2135b0db 48 #include "lwip/def.h"
Yann 0:f30e2135b0db 49 #include "lwip/memp.h"
Yann 0:f30e2135b0db 50 #include "lwip/tcpip.h"
Yann 0:f30e2135b0db 51
Yann 0:f30e2135b0db 52 #include "lwip/tcp_impl.h"
Yann 0:f30e2135b0db 53 #include "lwip/ip_frag.h"
Yann 0:f30e2135b0db 54 #include "netif/etharp.h"
Yann 0:f30e2135b0db 55 #include "lwip/dhcp.h"
Yann 0:f30e2135b0db 56 #include "lwip/autoip.h"
Yann 0:f30e2135b0db 57 #include "lwip/igmp.h"
Yann 0:f30e2135b0db 58 #include "lwip/dns.h"
Yann 0:f30e2135b0db 59
Yann 0:f30e2135b0db 60
Yann 0:f30e2135b0db 61 /** The one and only timeout list */
Yann 0:f30e2135b0db 62 static struct sys_timeo *next_timeout;
Yann 0:f30e2135b0db 63 #if NO_SYS
Yann 0:f30e2135b0db 64 static u32_t timeouts_last_time;
Yann 0:f30e2135b0db 65 #endif /* NO_SYS */
Yann 0:f30e2135b0db 66
Yann 0:f30e2135b0db 67 #if LWIP_TCP
Yann 0:f30e2135b0db 68 /** global variable that shows if the tcp timer is currently scheduled or not */
Yann 0:f30e2135b0db 69 static int tcpip_tcp_timer_active;
Yann 0:f30e2135b0db 70
Yann 0:f30e2135b0db 71 /**
Yann 0:f30e2135b0db 72 * Timer callback function that calls tcp_tmr() and reschedules itself.
Yann 0:f30e2135b0db 73 *
Yann 0:f30e2135b0db 74 * @param arg unused argument
Yann 0:f30e2135b0db 75 */
Yann 0:f30e2135b0db 76 static void
Yann 0:f30e2135b0db 77 tcpip_tcp_timer(void *arg)
Yann 0:f30e2135b0db 78 {
Yann 0:f30e2135b0db 79 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 80
Yann 0:f30e2135b0db 81 /* call TCP timer handler */
Yann 0:f30e2135b0db 82 tcp_tmr();
Yann 0:f30e2135b0db 83 /* timer still needed? */
Yann 0:f30e2135b0db 84 if (tcp_active_pcbs || tcp_tw_pcbs) {
Yann 0:f30e2135b0db 85 /* restart timer */
Yann 0:f30e2135b0db 86 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
Yann 0:f30e2135b0db 87 } else {
Yann 0:f30e2135b0db 88 /* disable timer */
Yann 0:f30e2135b0db 89 tcpip_tcp_timer_active = 0;
Yann 0:f30e2135b0db 90 }
Yann 0:f30e2135b0db 91 }
Yann 0:f30e2135b0db 92
Yann 0:f30e2135b0db 93 /**
Yann 0:f30e2135b0db 94 * Called from TCP_REG when registering a new PCB:
Yann 0:f30e2135b0db 95 * the reason is to have the TCP timer only running when
Yann 0:f30e2135b0db 96 * there are active (or time-wait) PCBs.
Yann 0:f30e2135b0db 97 */
Yann 0:f30e2135b0db 98 void
Yann 0:f30e2135b0db 99 tcp_timer_needed(void)
Yann 0:f30e2135b0db 100 {
Yann 0:f30e2135b0db 101 /* timer is off but needed again? */
Yann 0:f30e2135b0db 102 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
Yann 0:f30e2135b0db 103 /* enable and start timer */
Yann 0:f30e2135b0db 104 tcpip_tcp_timer_active = 1;
Yann 0:f30e2135b0db 105 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
Yann 0:f30e2135b0db 106 }
Yann 0:f30e2135b0db 107 }
Yann 0:f30e2135b0db 108 #endif /* LWIP_TCP */
Yann 0:f30e2135b0db 109
Yann 0:f30e2135b0db 110 #if IP_REASSEMBLY
Yann 0:f30e2135b0db 111 /**
Yann 0:f30e2135b0db 112 * Timer callback function that calls ip_reass_tmr() and reschedules itself.
Yann 0:f30e2135b0db 113 *
Yann 0:f30e2135b0db 114 * @param arg unused argument
Yann 0:f30e2135b0db 115 */
Yann 0:f30e2135b0db 116 static void
Yann 0:f30e2135b0db 117 ip_reass_timer(void *arg)
Yann 0:f30e2135b0db 118 {
Yann 0:f30e2135b0db 119 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 120 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: ip_reass_tmr()\n"));
Yann 0:f30e2135b0db 121 ip_reass_tmr();
Yann 0:f30e2135b0db 122 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
Yann 0:f30e2135b0db 123 }
Yann 0:f30e2135b0db 124 #endif /* IP_REASSEMBLY */
Yann 0:f30e2135b0db 125
Yann 0:f30e2135b0db 126 #if LWIP_ARP
Yann 0:f30e2135b0db 127 /**
Yann 0:f30e2135b0db 128 * Timer callback function that calls etharp_tmr() and reschedules itself.
Yann 0:f30e2135b0db 129 *
Yann 0:f30e2135b0db 130 * @param arg unused argument
Yann 0:f30e2135b0db 131 */
Yann 0:f30e2135b0db 132 static void
Yann 0:f30e2135b0db 133 arp_timer(void *arg)
Yann 0:f30e2135b0db 134 {
Yann 0:f30e2135b0db 135 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 136 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: etharp_tmr()\n"));
Yann 0:f30e2135b0db 137 etharp_tmr();
Yann 0:f30e2135b0db 138 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
Yann 0:f30e2135b0db 139 }
Yann 0:f30e2135b0db 140 #endif /* LWIP_ARP */
Yann 0:f30e2135b0db 141
Yann 0:f30e2135b0db 142 #if LWIP_DHCP
Yann 0:f30e2135b0db 143 /**
Yann 0:f30e2135b0db 144 * Timer callback function that calls dhcp_coarse_tmr() and reschedules itself.
Yann 0:f30e2135b0db 145 *
Yann 0:f30e2135b0db 146 * @param arg unused argument
Yann 0:f30e2135b0db 147 */
Yann 0:f30e2135b0db 148 static void
Yann 0:f30e2135b0db 149 dhcp_timer_coarse(void *arg)
Yann 0:f30e2135b0db 150 {
Yann 0:f30e2135b0db 151 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 152 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
Yann 0:f30e2135b0db 153 dhcp_coarse_tmr();
Yann 0:f30e2135b0db 154 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
Yann 0:f30e2135b0db 155 }
Yann 0:f30e2135b0db 156
Yann 0:f30e2135b0db 157 /**
Yann 0:f30e2135b0db 158 * Timer callback function that calls dhcp_fine_tmr() and reschedules itself.
Yann 0:f30e2135b0db 159 *
Yann 0:f30e2135b0db 160 * @param arg unused argument
Yann 0:f30e2135b0db 161 */
Yann 0:f30e2135b0db 162 static void
Yann 0:f30e2135b0db 163 dhcp_timer_fine(void *arg)
Yann 0:f30e2135b0db 164 {
Yann 0:f30e2135b0db 165 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 166 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
Yann 0:f30e2135b0db 167 dhcp_fine_tmr();
Yann 0:f30e2135b0db 168 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
Yann 0:f30e2135b0db 169 }
Yann 0:f30e2135b0db 170 #endif /* LWIP_DHCP */
Yann 0:f30e2135b0db 171
Yann 0:f30e2135b0db 172 #if LWIP_AUTOIP
Yann 0:f30e2135b0db 173 /**
Yann 0:f30e2135b0db 174 * Timer callback function that calls autoip_tmr() and reschedules itself.
Yann 0:f30e2135b0db 175 *
Yann 0:f30e2135b0db 176 * @param arg unused argument
Yann 0:f30e2135b0db 177 */
Yann 0:f30e2135b0db 178 static void
Yann 0:f30e2135b0db 179 autoip_timer(void *arg)
Yann 0:f30e2135b0db 180 {
Yann 0:f30e2135b0db 181 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 182 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: autoip_tmr()\n"));
Yann 0:f30e2135b0db 183 autoip_tmr();
Yann 0:f30e2135b0db 184 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
Yann 0:f30e2135b0db 185 }
Yann 0:f30e2135b0db 186 #endif /* LWIP_AUTOIP */
Yann 0:f30e2135b0db 187
Yann 0:f30e2135b0db 188 #if LWIP_IGMP
Yann 0:f30e2135b0db 189 /**
Yann 0:f30e2135b0db 190 * Timer callback function that calls igmp_tmr() and reschedules itself.
Yann 0:f30e2135b0db 191 *
Yann 0:f30e2135b0db 192 * @param arg unused argument
Yann 0:f30e2135b0db 193 */
Yann 0:f30e2135b0db 194 static void
Yann 0:f30e2135b0db 195 igmp_timer(void *arg)
Yann 0:f30e2135b0db 196 {
Yann 0:f30e2135b0db 197 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 198 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: igmp_tmr()\n"));
Yann 0:f30e2135b0db 199 igmp_tmr();
Yann 0:f30e2135b0db 200 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
Yann 0:f30e2135b0db 201 }
Yann 0:f30e2135b0db 202 #endif /* LWIP_IGMP */
Yann 0:f30e2135b0db 203
Yann 0:f30e2135b0db 204 #if LWIP_DNS
Yann 0:f30e2135b0db 205 /**
Yann 0:f30e2135b0db 206 * Timer callback function that calls dns_tmr() and reschedules itself.
Yann 0:f30e2135b0db 207 *
Yann 0:f30e2135b0db 208 * @param arg unused argument
Yann 0:f30e2135b0db 209 */
Yann 0:f30e2135b0db 210 static void
Yann 0:f30e2135b0db 211 dns_timer(void *arg)
Yann 0:f30e2135b0db 212 {
Yann 0:f30e2135b0db 213 LWIP_UNUSED_ARG(arg);
Yann 0:f30e2135b0db 214 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dns_tmr()\n"));
Yann 0:f30e2135b0db 215 dns_tmr();
Yann 0:f30e2135b0db 216 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
Yann 0:f30e2135b0db 217 }
Yann 0:f30e2135b0db 218 #endif /* LWIP_DNS */
Yann 0:f30e2135b0db 219
Yann 0:f30e2135b0db 220 /** Initialize this module */
Yann 0:f30e2135b0db 221 void sys_timeouts_init(void)
Yann 0:f30e2135b0db 222 {
Yann 0:f30e2135b0db 223 #if IP_REASSEMBLY
Yann 0:f30e2135b0db 224 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
Yann 0:f30e2135b0db 225 #endif /* IP_REASSEMBLY */
Yann 0:f30e2135b0db 226 #if LWIP_ARP
Yann 0:f30e2135b0db 227 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
Yann 0:f30e2135b0db 228 #endif /* LWIP_ARP */
Yann 0:f30e2135b0db 229 #if LWIP_DHCP
Yann 0:f30e2135b0db 230 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
Yann 0:f30e2135b0db 231 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
Yann 0:f30e2135b0db 232 #endif /* LWIP_DHCP */
Yann 0:f30e2135b0db 233 #if LWIP_AUTOIP
Yann 0:f30e2135b0db 234 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
Yann 0:f30e2135b0db 235 #endif /* LWIP_AUTOIP */
Yann 0:f30e2135b0db 236 #if LWIP_IGMP
Yann 0:f30e2135b0db 237 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
Yann 0:f30e2135b0db 238 #endif /* LWIP_IGMP */
Yann 0:f30e2135b0db 239 #if LWIP_DNS
Yann 0:f30e2135b0db 240 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
Yann 0:f30e2135b0db 241 #endif /* LWIP_DNS */
Yann 0:f30e2135b0db 242
Yann 0:f30e2135b0db 243 #if NO_SYS
Yann 0:f30e2135b0db 244 /* Initialise timestamp for sys_check_timeouts */
Yann 0:f30e2135b0db 245 timeouts_last_time = sys_now();
Yann 0:f30e2135b0db 246 #endif
Yann 0:f30e2135b0db 247 }
Yann 0:f30e2135b0db 248
Yann 0:f30e2135b0db 249 /**
Yann 0:f30e2135b0db 250 * Create a one-shot timer (aka timeout). Timeouts are processed in the
Yann 0:f30e2135b0db 251 * following cases:
Yann 0:f30e2135b0db 252 * - while waiting for a message using sys_timeouts_mbox_fetch()
Yann 0:f30e2135b0db 253 * - by calling sys_check_timeouts() (NO_SYS==1 only)
Yann 0:f30e2135b0db 254 *
Yann 0:f30e2135b0db 255 * @param msecs time in milliseconds after that the timer should expire
Yann 0:f30e2135b0db 256 * @param handler callback function to call when msecs have elapsed
Yann 0:f30e2135b0db 257 * @param arg argument to pass to the callback function
Yann 0:f30e2135b0db 258 */
Yann 0:f30e2135b0db 259 #if LWIP_DEBUG_TIMERNAMES
Yann 0:f30e2135b0db 260 void
Yann 0:f30e2135b0db 261 sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name)
Yann 0:f30e2135b0db 262 #else /* LWIP_DEBUG_TIMERNAMES */
Yann 0:f30e2135b0db 263 void
Yann 0:f30e2135b0db 264 sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
Yann 0:f30e2135b0db 265 #endif /* LWIP_DEBUG_TIMERNAMES */
Yann 0:f30e2135b0db 266 {
Yann 0:f30e2135b0db 267 struct sys_timeo *timeout, *t;
Yann 0:f30e2135b0db 268
Yann 0:f30e2135b0db 269 timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT);
Yann 0:f30e2135b0db 270 if (timeout == NULL) {
Yann 0:f30e2135b0db 271 LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL);
Yann 0:f30e2135b0db 272 return;
Yann 0:f30e2135b0db 273 }
Yann 0:f30e2135b0db 274 timeout->next = NULL;
Yann 0:f30e2135b0db 275 timeout->h = handler;
Yann 0:f30e2135b0db 276 timeout->arg = arg;
Yann 0:f30e2135b0db 277 timeout->time = msecs;
Yann 0:f30e2135b0db 278 #if LWIP_DEBUG_TIMERNAMES
Yann 0:f30e2135b0db 279 timeout->handler_name = handler_name;
Yann 0:f30e2135b0db 280 LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p msecs=%"U32_F" handler=%s arg=%p\n",
Yann 0:f30e2135b0db 281 (void *)timeout, msecs, handler_name, (void *)arg));
Yann 0:f30e2135b0db 282 #endif /* LWIP_DEBUG_TIMERNAMES */
Yann 0:f30e2135b0db 283
Yann 0:f30e2135b0db 284 if (next_timeout == NULL) {
Yann 0:f30e2135b0db 285 next_timeout = timeout;
Yann 0:f30e2135b0db 286 return;
Yann 0:f30e2135b0db 287 }
Yann 0:f30e2135b0db 288
Yann 0:f30e2135b0db 289 if (next_timeout->time > msecs) {
Yann 0:f30e2135b0db 290 next_timeout->time -= msecs;
Yann 0:f30e2135b0db 291 timeout->next = next_timeout;
Yann 0:f30e2135b0db 292 next_timeout = timeout;
Yann 0:f30e2135b0db 293 } else {
Yann 0:f30e2135b0db 294 for(t = next_timeout; t != NULL; t = t->next) {
Yann 0:f30e2135b0db 295 timeout->time -= t->time;
Yann 0:f30e2135b0db 296 if (t->next == NULL || t->next->time > timeout->time) {
Yann 0:f30e2135b0db 297 if (t->next != NULL) {
Yann 0:f30e2135b0db 298 t->next->time -= timeout->time;
Yann 0:f30e2135b0db 299 }
Yann 0:f30e2135b0db 300 timeout->next = t->next;
Yann 0:f30e2135b0db 301 t->next = timeout;
Yann 0:f30e2135b0db 302 break;
Yann 0:f30e2135b0db 303 }
Yann 0:f30e2135b0db 304 }
Yann 0:f30e2135b0db 305 }
Yann 0:f30e2135b0db 306 }
Yann 0:f30e2135b0db 307
Yann 0:f30e2135b0db 308 /**
Yann 0:f30e2135b0db 309 * Go through timeout list (for this task only) and remove the first matching
Yann 0:f30e2135b0db 310 * entry, even though the timeout has not triggered yet.
Yann 0:f30e2135b0db 311 *
Yann 0:f30e2135b0db 312 * @note This function only works as expected if there is only one timeout
Yann 0:f30e2135b0db 313 * calling 'handler' in the list of timeouts.
Yann 0:f30e2135b0db 314 *
Yann 0:f30e2135b0db 315 * @param handler callback function that would be called by the timeout
Yann 0:f30e2135b0db 316 * @param arg callback argument that would be passed to handler
Yann 0:f30e2135b0db 317 */
Yann 0:f30e2135b0db 318 void
Yann 0:f30e2135b0db 319 sys_untimeout(sys_timeout_handler handler, void *arg)
Yann 0:f30e2135b0db 320 {
Yann 0:f30e2135b0db 321 struct sys_timeo *prev_t, *t;
Yann 0:f30e2135b0db 322
Yann 0:f30e2135b0db 323 if (next_timeout == NULL) {
Yann 0:f30e2135b0db 324 return;
Yann 0:f30e2135b0db 325 }
Yann 0:f30e2135b0db 326
Yann 0:f30e2135b0db 327 for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) {
Yann 0:f30e2135b0db 328 if ((t->h == handler) && (t->arg == arg)) {
Yann 0:f30e2135b0db 329 /* We have a match */
Yann 0:f30e2135b0db 330 /* Unlink from previous in list */
Yann 0:f30e2135b0db 331 if (prev_t == NULL) {
Yann 0:f30e2135b0db 332 next_timeout = t->next;
Yann 0:f30e2135b0db 333 } else {
Yann 0:f30e2135b0db 334 prev_t->next = t->next;
Yann 0:f30e2135b0db 335 }
Yann 0:f30e2135b0db 336 /* If not the last one, add time of this one back to next */
Yann 0:f30e2135b0db 337 if (t->next != NULL) {
Yann 0:f30e2135b0db 338 t->next->time += t->time;
Yann 0:f30e2135b0db 339 }
Yann 0:f30e2135b0db 340 memp_free(MEMP_SYS_TIMEOUT, t);
Yann 0:f30e2135b0db 341 return;
Yann 0:f30e2135b0db 342 }
Yann 0:f30e2135b0db 343 }
Yann 0:f30e2135b0db 344 return;
Yann 0:f30e2135b0db 345 }
Yann 0:f30e2135b0db 346
Yann 0:f30e2135b0db 347 #if NO_SYS
Yann 0:f30e2135b0db 348
Yann 0:f30e2135b0db 349 /** Handle timeouts for NO_SYS==1 (i.e. without using
Yann 0:f30e2135b0db 350 * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout
Yann 0:f30e2135b0db 351 * handler functions when timeouts expire.
Yann 0:f30e2135b0db 352 *
Yann 0:f30e2135b0db 353 * Must be called periodically from your main loop.
Yann 0:f30e2135b0db 354 */
Yann 0:f30e2135b0db 355 void
Yann 0:f30e2135b0db 356 sys_check_timeouts(void)
Yann 0:f30e2135b0db 357 {
Yann 0:f30e2135b0db 358 struct sys_timeo *tmptimeout;
Yann 0:f30e2135b0db 359 u32_t diff;
Yann 0:f30e2135b0db 360 sys_timeout_handler handler;
Yann 0:f30e2135b0db 361 void *arg;
Yann 0:f30e2135b0db 362 int had_one;
Yann 0:f30e2135b0db 363 u32_t now;
Yann 0:f30e2135b0db 364
Yann 0:f30e2135b0db 365 now = sys_now();
Yann 0:f30e2135b0db 366 if (next_timeout) {
Yann 0:f30e2135b0db 367 /* this cares for wraparounds */
Yann 0:f30e2135b0db 368 diff = LWIP_U32_DIFF(now, timeouts_last_time);
Yann 0:f30e2135b0db 369 do
Yann 0:f30e2135b0db 370 {
Yann 0:f30e2135b0db 371 had_one = 0;
Yann 0:f30e2135b0db 372 tmptimeout = next_timeout;
Yann 0:f30e2135b0db 373 if (tmptimeout->time <= diff) {
Yann 0:f30e2135b0db 374 /* timeout has expired */
Yann 0:f30e2135b0db 375 had_one = 1;
Yann 0:f30e2135b0db 376 timeouts_last_time = now;
Yann 0:f30e2135b0db 377 diff -= tmptimeout->time;
Yann 0:f30e2135b0db 378 next_timeout = tmptimeout->next;
Yann 0:f30e2135b0db 379 handler = tmptimeout->h;
Yann 0:f30e2135b0db 380 arg = tmptimeout->arg;
Yann 0:f30e2135b0db 381 #if LWIP_DEBUG_TIMERNAMES
Yann 0:f30e2135b0db 382 if (handler != NULL) {
Yann 0:f30e2135b0db 383 LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s arg=%p\n",
Yann 0:f30e2135b0db 384 tmptimeout->handler_name, arg));
Yann 0:f30e2135b0db 385 }
Yann 0:f30e2135b0db 386 #endif /* LWIP_DEBUG_TIMERNAMES */
Yann 0:f30e2135b0db 387 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
Yann 0:f30e2135b0db 388 if (handler != NULL) {
Yann 0:f30e2135b0db 389 handler(arg);
Yann 0:f30e2135b0db 390 }
Yann 0:f30e2135b0db 391 }
Yann 0:f30e2135b0db 392 /* repeat until all expired timers have been called */
Yann 0:f30e2135b0db 393 }while(had_one);
Yann 0:f30e2135b0db 394 }
Yann 0:f30e2135b0db 395 }
Yann 0:f30e2135b0db 396
Yann 0:f30e2135b0db 397 /** Set back the timestamp of the last call to sys_check_timeouts()
Yann 0:f30e2135b0db 398 * This is necessary if sys_check_timeouts() hasn't been called for a long
Yann 0:f30e2135b0db 399 * time (e.g. while saving energy) to prevent all timer functions of that
Yann 0:f30e2135b0db 400 * period being called.
Yann 0:f30e2135b0db 401 */
Yann 0:f30e2135b0db 402 void
Yann 0:f30e2135b0db 403 sys_restart_timeouts(void)
Yann 0:f30e2135b0db 404 {
Yann 0:f30e2135b0db 405 timeouts_last_time = sys_now();
Yann 0:f30e2135b0db 406 }
Yann 0:f30e2135b0db 407
Yann 0:f30e2135b0db 408 #else /* NO_SYS */
Yann 0:f30e2135b0db 409
Yann 0:f30e2135b0db 410 /**
Yann 0:f30e2135b0db 411 * Wait (forever) for a message to arrive in an mbox.
Yann 0:f30e2135b0db 412 * While waiting, timeouts are processed.
Yann 0:f30e2135b0db 413 *
Yann 0:f30e2135b0db 414 * @param mbox the mbox to fetch the message from
Yann 0:f30e2135b0db 415 * @param msg the place to store the message
Yann 0:f30e2135b0db 416 */
Yann 0:f30e2135b0db 417 void
Yann 0:f30e2135b0db 418 sys_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
Yann 0:f30e2135b0db 419 {
Yann 0:f30e2135b0db 420 u32_t time_needed;
Yann 0:f30e2135b0db 421 struct sys_timeo *tmptimeout;
Yann 0:f30e2135b0db 422 sys_timeout_handler handler;
Yann 0:f30e2135b0db 423 void *arg;
Yann 0:f30e2135b0db 424
Yann 0:f30e2135b0db 425 again:
Yann 0:f30e2135b0db 426 if (!next_timeout) {
Yann 0:f30e2135b0db 427 time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
Yann 0:f30e2135b0db 428 } else {
Yann 0:f30e2135b0db 429 if (next_timeout->time > 0) {
Yann 0:f30e2135b0db 430 time_needed = sys_arch_mbox_fetch(mbox, msg, next_timeout->time);
Yann 0:f30e2135b0db 431 } else {
Yann 0:f30e2135b0db 432 time_needed = SYS_ARCH_TIMEOUT;
Yann 0:f30e2135b0db 433 }
Yann 0:f30e2135b0db 434
Yann 0:f30e2135b0db 435 if (time_needed == SYS_ARCH_TIMEOUT) {
Yann 0:f30e2135b0db 436 /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
Yann 0:f30e2135b0db 437 could be fetched. We should now call the timeout handler and
Yann 0:f30e2135b0db 438 deallocate the memory allocated for the timeout. */
Yann 0:f30e2135b0db 439 tmptimeout = next_timeout;
Yann 0:f30e2135b0db 440 next_timeout = tmptimeout->next;
Yann 0:f30e2135b0db 441 handler = tmptimeout->h;
Yann 0:f30e2135b0db 442 arg = tmptimeout->arg;
Yann 0:f30e2135b0db 443 #if LWIP_DEBUG_TIMERNAMES
Yann 0:f30e2135b0db 444 if (handler != NULL) {
Yann 0:f30e2135b0db 445 LWIP_DEBUGF(TIMERS_DEBUG, ("stmf calling h=%s arg=%p\n",
Yann 0:f30e2135b0db 446 tmptimeout->handler_name, arg));
Yann 0:f30e2135b0db 447 }
Yann 0:f30e2135b0db 448 #endif /* LWIP_DEBUG_TIMERNAMES */
Yann 0:f30e2135b0db 449 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
Yann 0:f30e2135b0db 450 if (handler != NULL) {
Yann 0:f30e2135b0db 451 /* For LWIP_TCPIP_CORE_LOCKING, lock the core before calling the
Yann 0:f30e2135b0db 452 timeout handler function. */
Yann 0:f30e2135b0db 453 LOCK_TCPIP_CORE();
Yann 0:f30e2135b0db 454 handler(arg);
Yann 0:f30e2135b0db 455 UNLOCK_TCPIP_CORE();
Yann 0:f30e2135b0db 456 }
Yann 0:f30e2135b0db 457 LWIP_TCPIP_THREAD_ALIVE();
Yann 0:f30e2135b0db 458
Yann 0:f30e2135b0db 459 /* We try again to fetch a message from the mbox. */
Yann 0:f30e2135b0db 460 goto again;
Yann 0:f30e2135b0db 461 } else {
Yann 0:f30e2135b0db 462 /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
Yann 0:f30e2135b0db 463 occured. The time variable is set to the number of
Yann 0:f30e2135b0db 464 milliseconds we waited for the message. */
Yann 0:f30e2135b0db 465 if (time_needed < next_timeout->time) {
Yann 0:f30e2135b0db 466 next_timeout->time -= time_needed;
Yann 0:f30e2135b0db 467 } else {
Yann 0:f30e2135b0db 468 next_timeout->time = 0;
Yann 0:f30e2135b0db 469 }
Yann 0:f30e2135b0db 470 }
Yann 0:f30e2135b0db 471 }
Yann 0:f30e2135b0db 472 }
Yann 0:f30e2135b0db 473
Yann 0:f30e2135b0db 474 #endif /* NO_SYS */
Yann 0:f30e2135b0db 475
Yann 0:f30e2135b0db 476 #else /* LWIP_TIMERS */
Yann 0:f30e2135b0db 477 /* Satisfy the TCP code which calls this function */
Yann 0:f30e2135b0db 478 void
Yann 0:f30e2135b0db 479 tcp_timer_needed(void)
Yann 0:f30e2135b0db 480 {
Yann 0:f30e2135b0db 481 }
Yann 0:f30e2135b0db 482 #endif /* LWIP_TIMERS */