Arlindo Montagnoli / Mbed 2 deprecated ProjetoBB

ProjetoBB

Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_CORTEX_A/rt_Mailbox.c@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 2 * RL-ARM - RTX
DieterGraef 0:f9b6112278fe 3 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 4 * Name: RT_MAILBOX.C
DieterGraef 0:f9b6112278fe 5 * Purpose: Implements waits and wake-ups for mailbox messages
DieterGraef 0:f9b6112278fe 6 * Rev.: V4.70
DieterGraef 0:f9b6112278fe 7 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 8 *
DieterGraef 0:f9b6112278fe 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH
DieterGraef 0:f9b6112278fe 10 * All rights reserved.
DieterGraef 0:f9b6112278fe 11 * Redistribution and use in source and binary forms, with or without
DieterGraef 0:f9b6112278fe 12 * modification, are permitted provided that the following conditions are met:
DieterGraef 0:f9b6112278fe 13 * - Redistributions of source code must retain the above copyright
DieterGraef 0:f9b6112278fe 14 * notice, this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 15 * - Redistributions in binary form must reproduce the above copyright
DieterGraef 0:f9b6112278fe 16 * notice, this list of conditions and the following disclaimer in the
DieterGraef 0:f9b6112278fe 17 * documentation and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 18 * - Neither the name of ARM nor the names of its contributors may be used
DieterGraef 0:f9b6112278fe 19 * to endorse or promote products derived from this software without
DieterGraef 0:f9b6112278fe 20 * specific prior written permission.
DieterGraef 0:f9b6112278fe 21 *
DieterGraef 0:f9b6112278fe 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
DieterGraef 0:f9b6112278fe 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
DieterGraef 0:f9b6112278fe 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
DieterGraef 0:f9b6112278fe 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
DieterGraef 0:f9b6112278fe 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
DieterGraef 0:f9b6112278fe 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
DieterGraef 0:f9b6112278fe 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
DieterGraef 0:f9b6112278fe 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
DieterGraef 0:f9b6112278fe 32 * POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 33 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 #include "rt_TypeDef.h"
DieterGraef 0:f9b6112278fe 36 #include "RTX_Config.h"
DieterGraef 0:f9b6112278fe 37 #include "rt_System.h"
DieterGraef 0:f9b6112278fe 38 #include "rt_List.h"
DieterGraef 0:f9b6112278fe 39 #include "rt_Mailbox.h"
DieterGraef 0:f9b6112278fe 40 #include "rt_MemBox.h"
DieterGraef 0:f9b6112278fe 41 #include "rt_Task.h"
DieterGraef 0:f9b6112278fe 42 #ifdef __CORTEX_A9
DieterGraef 0:f9b6112278fe 43 #include "rt_HAL_CA.h"
DieterGraef 0:f9b6112278fe 44 #else
DieterGraef 0:f9b6112278fe 45 #include "rt_HAL_CM.h"
DieterGraef 0:f9b6112278fe 46 #endif
DieterGraef 0:f9b6112278fe 47
DieterGraef 0:f9b6112278fe 48
DieterGraef 0:f9b6112278fe 49 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 50 * Functions
DieterGraef 0:f9b6112278fe 51 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 52
DieterGraef 0:f9b6112278fe 53
DieterGraef 0:f9b6112278fe 54 /*--------------------------- rt_mbx_init -----------------------------------*/
DieterGraef 0:f9b6112278fe 55
DieterGraef 0:f9b6112278fe 56 void rt_mbx_init (OS_ID mailbox, U16 mbx_size) {
DieterGraef 0:f9b6112278fe 57 /* Initialize a mailbox */
DieterGraef 0:f9b6112278fe 58 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 59
DieterGraef 0:f9b6112278fe 60 p_MCB->cb_type = MCB;
DieterGraef 0:f9b6112278fe 61 p_MCB->state = 0;
DieterGraef 0:f9b6112278fe 62 p_MCB->isr_st = 0;
DieterGraef 0:f9b6112278fe 63 p_MCB->p_lnk = NULL;
DieterGraef 0:f9b6112278fe 64 p_MCB->first = 0;
DieterGraef 0:f9b6112278fe 65 p_MCB->last = 0;
DieterGraef 0:f9b6112278fe 66 p_MCB->count = 0;
DieterGraef 0:f9b6112278fe 67 p_MCB->size = (mbx_size + sizeof(void *) - sizeof(struct OS_MCB)) /
DieterGraef 0:f9b6112278fe 68 (U32)sizeof (void *);
DieterGraef 0:f9b6112278fe 69 }
DieterGraef 0:f9b6112278fe 70
DieterGraef 0:f9b6112278fe 71
DieterGraef 0:f9b6112278fe 72 /*--------------------------- rt_mbx_send -----------------------------------*/
DieterGraef 0:f9b6112278fe 73
DieterGraef 0:f9b6112278fe 74 OS_RESULT rt_mbx_send (OS_ID mailbox, void *p_msg, U16 timeout) {
DieterGraef 0:f9b6112278fe 75 /* Send message to a mailbox */
DieterGraef 0:f9b6112278fe 76 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 77 P_TCB p_TCB;
DieterGraef 0:f9b6112278fe 78
DieterGraef 0:f9b6112278fe 79 if ((p_MCB->p_lnk != NULL) && (p_MCB->state == 1)) {
DieterGraef 0:f9b6112278fe 80 /* A task is waiting for message */
DieterGraef 0:f9b6112278fe 81 p_TCB = rt_get_first ((P_XCB)p_MCB);
DieterGraef 0:f9b6112278fe 82 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 83 rt_ret_val2(p_TCB, 0x10/*osEventMessage*/, (U32)p_msg);
DieterGraef 0:f9b6112278fe 84 #else
DieterGraef 0:f9b6112278fe 85 *p_TCB->msg = p_msg;
DieterGraef 0:f9b6112278fe 86 rt_ret_val (p_TCB, OS_R_MBX);
DieterGraef 0:f9b6112278fe 87 #endif
DieterGraef 0:f9b6112278fe 88 rt_rmv_dly (p_TCB);
DieterGraef 0:f9b6112278fe 89 rt_dispatch (p_TCB);
DieterGraef 0:f9b6112278fe 90 }
DieterGraef 0:f9b6112278fe 91 else {
DieterGraef 0:f9b6112278fe 92 /* Store message in mailbox queue */
DieterGraef 0:f9b6112278fe 93 if (p_MCB->count == p_MCB->size) {
DieterGraef 0:f9b6112278fe 94 /* No free message entry, wait for one. If message queue is full, */
DieterGraef 0:f9b6112278fe 95 /* then no task is waiting for message. The 'p_MCB->p_lnk' list */
DieterGraef 0:f9b6112278fe 96 /* pointer can now be reused for send message waits task list. */
DieterGraef 0:f9b6112278fe 97 if (timeout == 0) {
DieterGraef 0:f9b6112278fe 98 return (OS_R_TMO);
DieterGraef 0:f9b6112278fe 99 }
DieterGraef 0:f9b6112278fe 100 if (p_MCB->p_lnk != NULL) {
DieterGraef 0:f9b6112278fe 101 rt_put_prio ((P_XCB)p_MCB, os_tsk.run);
DieterGraef 0:f9b6112278fe 102 }
DieterGraef 0:f9b6112278fe 103 else {
DieterGraef 0:f9b6112278fe 104 p_MCB->p_lnk = os_tsk.run;
DieterGraef 0:f9b6112278fe 105 os_tsk.run->p_lnk = NULL;
DieterGraef 0:f9b6112278fe 106 os_tsk.run->p_rlnk = (P_TCB)p_MCB;
DieterGraef 0:f9b6112278fe 107 /* Task is waiting to send a message */
DieterGraef 0:f9b6112278fe 108 p_MCB->state = 2;
DieterGraef 0:f9b6112278fe 109 }
DieterGraef 0:f9b6112278fe 110 os_tsk.run->msg = p_msg;
DieterGraef 0:f9b6112278fe 111 rt_block (timeout, WAIT_MBX);
DieterGraef 0:f9b6112278fe 112 return (OS_R_TMO);
DieterGraef 0:f9b6112278fe 113 }
DieterGraef 0:f9b6112278fe 114 /* Yes, there is a free entry in a mailbox. */
DieterGraef 0:f9b6112278fe 115 p_MCB->msg[p_MCB->first] = p_msg;
DieterGraef 0:f9b6112278fe 116 rt_inc (&p_MCB->count);
DieterGraef 0:f9b6112278fe 117 if (++p_MCB->first == p_MCB->size) {
DieterGraef 0:f9b6112278fe 118 p_MCB->first = 0;
DieterGraef 0:f9b6112278fe 119 }
DieterGraef 0:f9b6112278fe 120 }
DieterGraef 0:f9b6112278fe 121 return (OS_R_OK);
DieterGraef 0:f9b6112278fe 122 }
DieterGraef 0:f9b6112278fe 123
DieterGraef 0:f9b6112278fe 124
DieterGraef 0:f9b6112278fe 125 /*--------------------------- rt_mbx_wait -----------------------------------*/
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 OS_RESULT rt_mbx_wait (OS_ID mailbox, void **message, U16 timeout) {
DieterGraef 0:f9b6112278fe 128 /* Receive a message; possibly wait for it */
DieterGraef 0:f9b6112278fe 129 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 130 P_TCB p_TCB;
DieterGraef 0:f9b6112278fe 131
DieterGraef 0:f9b6112278fe 132 /* If a message is available in the fifo buffer */
DieterGraef 0:f9b6112278fe 133 /* remove it from the fifo buffer and return. */
DieterGraef 0:f9b6112278fe 134 if (p_MCB->count) {
DieterGraef 0:f9b6112278fe 135 *message = p_MCB->msg[p_MCB->last];
DieterGraef 0:f9b6112278fe 136 if (++p_MCB->last == p_MCB->size) {
DieterGraef 0:f9b6112278fe 137 p_MCB->last = 0;
DieterGraef 0:f9b6112278fe 138 }
DieterGraef 0:f9b6112278fe 139 if ((p_MCB->p_lnk != NULL) && (p_MCB->state == 2)) {
DieterGraef 0:f9b6112278fe 140 /* A task is waiting to send message */
DieterGraef 0:f9b6112278fe 141 p_TCB = rt_get_first ((P_XCB)p_MCB);
DieterGraef 0:f9b6112278fe 142 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 143 rt_ret_val(p_TCB, 0/*osOK*/);
DieterGraef 0:f9b6112278fe 144 #else
DieterGraef 0:f9b6112278fe 145 rt_ret_val(p_TCB, OS_R_OK);
DieterGraef 0:f9b6112278fe 146 #endif
DieterGraef 0:f9b6112278fe 147 p_MCB->msg[p_MCB->first] = p_TCB->msg;
DieterGraef 0:f9b6112278fe 148 if (++p_MCB->first == p_MCB->size) {
DieterGraef 0:f9b6112278fe 149 p_MCB->first = 0;
DieterGraef 0:f9b6112278fe 150 }
DieterGraef 0:f9b6112278fe 151 rt_rmv_dly (p_TCB);
DieterGraef 0:f9b6112278fe 152 rt_dispatch (p_TCB);
DieterGraef 0:f9b6112278fe 153 }
DieterGraef 0:f9b6112278fe 154 else {
DieterGraef 0:f9b6112278fe 155 rt_dec (&p_MCB->count);
DieterGraef 0:f9b6112278fe 156 }
DieterGraef 0:f9b6112278fe 157 return (OS_R_OK);
DieterGraef 0:f9b6112278fe 158 }
DieterGraef 0:f9b6112278fe 159 /* No message available: wait for one */
DieterGraef 0:f9b6112278fe 160 if (timeout == 0) {
DieterGraef 0:f9b6112278fe 161 return (OS_R_TMO);
DieterGraef 0:f9b6112278fe 162 }
DieterGraef 0:f9b6112278fe 163 if (p_MCB->p_lnk != NULL) {
DieterGraef 0:f9b6112278fe 164 rt_put_prio ((P_XCB)p_MCB, os_tsk.run);
DieterGraef 0:f9b6112278fe 165 }
DieterGraef 0:f9b6112278fe 166 else {
DieterGraef 0:f9b6112278fe 167 p_MCB->p_lnk = os_tsk.run;
DieterGraef 0:f9b6112278fe 168 os_tsk.run->p_lnk = NULL;
DieterGraef 0:f9b6112278fe 169 os_tsk.run->p_rlnk = (P_TCB)p_MCB;
DieterGraef 0:f9b6112278fe 170 /* Task is waiting to receive a message */
DieterGraef 0:f9b6112278fe 171 p_MCB->state = 1;
DieterGraef 0:f9b6112278fe 172 }
DieterGraef 0:f9b6112278fe 173 rt_block(timeout, WAIT_MBX);
DieterGraef 0:f9b6112278fe 174 #ifndef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 175 os_tsk.run->msg = message;
DieterGraef 0:f9b6112278fe 176 #endif
DieterGraef 0:f9b6112278fe 177 return (OS_R_TMO);
DieterGraef 0:f9b6112278fe 178 }
DieterGraef 0:f9b6112278fe 179
DieterGraef 0:f9b6112278fe 180
DieterGraef 0:f9b6112278fe 181 /*--------------------------- rt_mbx_check ----------------------------------*/
DieterGraef 0:f9b6112278fe 182
DieterGraef 0:f9b6112278fe 183 OS_RESULT rt_mbx_check (OS_ID mailbox) {
DieterGraef 0:f9b6112278fe 184 /* Check for free space in a mailbox. Returns the number of messages */
DieterGraef 0:f9b6112278fe 185 /* that can be stored to a mailbox. It returns 0 when mailbox is full. */
DieterGraef 0:f9b6112278fe 186 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 187
DieterGraef 0:f9b6112278fe 188 return (p_MCB->size - p_MCB->count);
DieterGraef 0:f9b6112278fe 189 }
DieterGraef 0:f9b6112278fe 190
DieterGraef 0:f9b6112278fe 191
DieterGraef 0:f9b6112278fe 192 /*--------------------------- isr_mbx_send ----------------------------------*/
DieterGraef 0:f9b6112278fe 193
DieterGraef 0:f9b6112278fe 194 void isr_mbx_send (OS_ID mailbox, void *p_msg) {
DieterGraef 0:f9b6112278fe 195 /* Same function as "os_mbx_send", but to be called by ISRs. */
DieterGraef 0:f9b6112278fe 196 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 197
DieterGraef 0:f9b6112278fe 198 rt_psq_enq (p_MCB, (U32)p_msg);
DieterGraef 0:f9b6112278fe 199 rt_psh_req ();
DieterGraef 0:f9b6112278fe 200 }
DieterGraef 0:f9b6112278fe 201
DieterGraef 0:f9b6112278fe 202
DieterGraef 0:f9b6112278fe 203 /*--------------------------- isr_mbx_receive -------------------------------*/
DieterGraef 0:f9b6112278fe 204
DieterGraef 0:f9b6112278fe 205 OS_RESULT isr_mbx_receive (OS_ID mailbox, void **message) {
DieterGraef 0:f9b6112278fe 206 /* Receive a message in the interrupt function. The interrupt function */
DieterGraef 0:f9b6112278fe 207 /* should not wait for a message since this would block the rtx os. */
DieterGraef 0:f9b6112278fe 208 P_MCB p_MCB = mailbox;
DieterGraef 0:f9b6112278fe 209
DieterGraef 0:f9b6112278fe 210 if (p_MCB->count) {
DieterGraef 0:f9b6112278fe 211 /* A message is available in the fifo buffer. */
DieterGraef 0:f9b6112278fe 212 *message = p_MCB->msg[p_MCB->last];
DieterGraef 0:f9b6112278fe 213 if (p_MCB->state == 2) {
DieterGraef 0:f9b6112278fe 214 /* A task is locked waiting to send message */
DieterGraef 0:f9b6112278fe 215 rt_psq_enq (p_MCB, 0);
DieterGraef 0:f9b6112278fe 216 rt_psh_req ();
DieterGraef 0:f9b6112278fe 217 }
DieterGraef 0:f9b6112278fe 218 rt_dec (&p_MCB->count);
DieterGraef 0:f9b6112278fe 219 if (++p_MCB->last == p_MCB->size) {
DieterGraef 0:f9b6112278fe 220 p_MCB->last = 0;
DieterGraef 0:f9b6112278fe 221 }
DieterGraef 0:f9b6112278fe 222 return (OS_R_MBX);
DieterGraef 0:f9b6112278fe 223 }
DieterGraef 0:f9b6112278fe 224 return (OS_R_OK);
DieterGraef 0:f9b6112278fe 225 }
DieterGraef 0:f9b6112278fe 226
DieterGraef 0:f9b6112278fe 227
DieterGraef 0:f9b6112278fe 228 /*--------------------------- rt_mbx_psh ------------------------------------*/
DieterGraef 0:f9b6112278fe 229
DieterGraef 0:f9b6112278fe 230 void rt_mbx_psh (P_MCB p_CB, void *p_msg) {
DieterGraef 0:f9b6112278fe 231 /* Store the message to the mailbox queue or pass it to task directly. */
DieterGraef 0:f9b6112278fe 232 P_TCB p_TCB;
DieterGraef 0:f9b6112278fe 233 void *mem;
DieterGraef 0:f9b6112278fe 234
DieterGraef 0:f9b6112278fe 235 if (p_CB->p_lnk != NULL) switch (p_CB->state) {
DieterGraef 0:f9b6112278fe 236 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 237 case 3:
DieterGraef 0:f9b6112278fe 238 /* Task is waiting to allocate memory, remove it from the waiting list */
DieterGraef 0:f9b6112278fe 239 mem = rt_alloc_box(p_msg);
DieterGraef 0:f9b6112278fe 240 if (mem == NULL) break;
DieterGraef 0:f9b6112278fe 241 p_TCB = rt_get_first ((P_XCB)p_CB);
DieterGraef 0:f9b6112278fe 242 rt_ret_val(p_TCB, (U32)mem);
DieterGraef 0:f9b6112278fe 243 p_TCB->state = READY;
DieterGraef 0:f9b6112278fe 244 rt_rmv_dly (p_TCB);
DieterGraef 0:f9b6112278fe 245 rt_put_prio (&os_rdy, p_TCB);
DieterGraef 0:f9b6112278fe 246 break;
DieterGraef 0:f9b6112278fe 247 #endif
DieterGraef 0:f9b6112278fe 248 case 2:
DieterGraef 0:f9b6112278fe 249 /* Task is waiting to send a message, remove it from the waiting list */
DieterGraef 0:f9b6112278fe 250 p_TCB = rt_get_first ((P_XCB)p_CB);
DieterGraef 0:f9b6112278fe 251 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 252 rt_ret_val(p_TCB, 0/*osOK*/);
DieterGraef 0:f9b6112278fe 253 #else
DieterGraef 0:f9b6112278fe 254 rt_ret_val(p_TCB, OS_R_OK);
DieterGraef 0:f9b6112278fe 255 #endif
DieterGraef 0:f9b6112278fe 256 p_CB->msg[p_CB->first] = p_TCB->msg;
DieterGraef 0:f9b6112278fe 257 rt_inc (&p_CB->count);
DieterGraef 0:f9b6112278fe 258 if (++p_CB->first == p_CB->size) {
DieterGraef 0:f9b6112278fe 259 p_CB->first = 0;
DieterGraef 0:f9b6112278fe 260 }
DieterGraef 0:f9b6112278fe 261 p_TCB->state = READY;
DieterGraef 0:f9b6112278fe 262 rt_rmv_dly (p_TCB);
DieterGraef 0:f9b6112278fe 263 rt_put_prio (&os_rdy, p_TCB);
DieterGraef 0:f9b6112278fe 264 break;
DieterGraef 0:f9b6112278fe 265 case 1:
DieterGraef 0:f9b6112278fe 266 /* Task is waiting for a message, pass the message to the task directly */
DieterGraef 0:f9b6112278fe 267 p_TCB = rt_get_first ((P_XCB)p_CB);
DieterGraef 0:f9b6112278fe 268 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 269 rt_ret_val2(p_TCB, 0x10/*osEventMessage*/, (U32)p_msg);
DieterGraef 0:f9b6112278fe 270 #else
DieterGraef 0:f9b6112278fe 271 *p_TCB->msg = p_msg;
DieterGraef 0:f9b6112278fe 272 rt_ret_val (p_TCB, OS_R_MBX);
DieterGraef 0:f9b6112278fe 273 #endif
DieterGraef 0:f9b6112278fe 274 p_TCB->state = READY;
DieterGraef 0:f9b6112278fe 275 rt_rmv_dly (p_TCB);
DieterGraef 0:f9b6112278fe 276 rt_put_prio (&os_rdy, p_TCB);
DieterGraef 0:f9b6112278fe 277 break;
DieterGraef 0:f9b6112278fe 278 } else {
DieterGraef 0:f9b6112278fe 279 /* No task is waiting for a message, store it to the mailbox queue */
DieterGraef 0:f9b6112278fe 280 if (p_CB->count < p_CB->size) {
DieterGraef 0:f9b6112278fe 281 p_CB->msg[p_CB->first] = p_msg;
DieterGraef 0:f9b6112278fe 282 rt_inc (&p_CB->count);
DieterGraef 0:f9b6112278fe 283 if (++p_CB->first == p_CB->size) {
DieterGraef 0:f9b6112278fe 284 p_CB->first = 0;
DieterGraef 0:f9b6112278fe 285 }
DieterGraef 0:f9b6112278fe 286 }
DieterGraef 0:f9b6112278fe 287 else {
DieterGraef 0:f9b6112278fe 288 os_error (OS_ERR_MBX_OVF);
DieterGraef 0:f9b6112278fe 289 }
DieterGraef 0:f9b6112278fe 290 }
DieterGraef 0:f9b6112278fe 291 }
DieterGraef 0:f9b6112278fe 292
DieterGraef 0:f9b6112278fe 293 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 294 * end of file
DieterGraef 0:f9b6112278fe 295 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 296