TeamGyro / mbed-rtos

OS2

Dependents:   GYRO_MPU6050 Bluetooth_Powered_Multimeter_Using_STM32F429_and_RTOS fyp

rtx/TARGET_ARM7/rt_Mailbox.c@0:a7c449cd2d5a, 2020-02-03 (annotated)

Committer:
guilhemMBED
Date:
Mon Feb 03 13:41:14 2020 +0000
Revision:
0:a7c449cd2d5a
previous version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
guilhemMBED 0:a7c449cd2d5a 1 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 2 * RL-ARM - RTX
guilhemMBED 0:a7c449cd2d5a 3 *----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 4 * Name: RT_MAILBOX.C
guilhemMBED 0:a7c449cd2d5a 5 * Purpose: Implements waits and wake-ups for mailbox messages
guilhemMBED 0:a7c449cd2d5a 6 * Rev.: V4.60
guilhemMBED 0:a7c449cd2d5a 7 *----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 8 *
guilhemMBED 0:a7c449cd2d5a 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
guilhemMBED 0:a7c449cd2d5a 10 * All rights reserved.
guilhemMBED 0:a7c449cd2d5a 11 * Redistribution and use in source and binary forms, with or without
guilhemMBED 0:a7c449cd2d5a 12 * modification, are permitted provided that the following conditions are met:
guilhemMBED 0:a7c449cd2d5a 13 * - Redistributions of source code must retain the above copyright
guilhemMBED 0:a7c449cd2d5a 14 * notice, this list of conditions and the following disclaimer.
guilhemMBED 0:a7c449cd2d5a 15 * - Redistributions in binary form must reproduce the above copyright
guilhemMBED 0:a7c449cd2d5a 16 * notice, this list of conditions and the following disclaimer in the
guilhemMBED 0:a7c449cd2d5a 17 * documentation and/or other materials provided with the distribution.
guilhemMBED 0:a7c449cd2d5a 18 * - Neither the name of ARM nor the names of its contributors may be used
guilhemMBED 0:a7c449cd2d5a 19 * to endorse or promote products derived from this software without
guilhemMBED 0:a7c449cd2d5a 20 * specific prior written permission.
guilhemMBED 0:a7c449cd2d5a 21 *
guilhemMBED 0:a7c449cd2d5a 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
guilhemMBED 0:a7c449cd2d5a 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
guilhemMBED 0:a7c449cd2d5a 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
guilhemMBED 0:a7c449cd2d5a 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
guilhemMBED 0:a7c449cd2d5a 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
guilhemMBED 0:a7c449cd2d5a 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
guilhemMBED 0:a7c449cd2d5a 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
guilhemMBED 0:a7c449cd2d5a 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
guilhemMBED 0:a7c449cd2d5a 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
guilhemMBED 0:a7c449cd2d5a 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
guilhemMBED 0:a7c449cd2d5a 32 * POSSIBILITY OF SUCH DAMAGE.
guilhemMBED 0:a7c449cd2d5a 33 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 34
guilhemMBED 0:a7c449cd2d5a 35 #include "rt_TypeDef.h"
guilhemMBED 0:a7c449cd2d5a 36 #include "RTX_Conf.h"
guilhemMBED 0:a7c449cd2d5a 37 #include "rt_System.h"
guilhemMBED 0:a7c449cd2d5a 38 #include "rt_List.h"
guilhemMBED 0:a7c449cd2d5a 39 #include "rt_Mailbox.h"
guilhemMBED 0:a7c449cd2d5a 40 #include "rt_MemBox.h"
guilhemMBED 0:a7c449cd2d5a 41 #include "rt_Task.h"
guilhemMBED 0:a7c449cd2d5a 42 #include "rt_HAL_CM.h"
guilhemMBED 0:a7c449cd2d5a 43
guilhemMBED 0:a7c449cd2d5a 44
guilhemMBED 0:a7c449cd2d5a 45 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 46 * Functions
guilhemMBED 0:a7c449cd2d5a 47 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 48
guilhemMBED 0:a7c449cd2d5a 49
guilhemMBED 0:a7c449cd2d5a 50 /*--------------------------- rt_mbx_init -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 51
guilhemMBED 0:a7c449cd2d5a 52 void rt_mbx_init (OS_ID mailbox, U16 mbx_size) {
guilhemMBED 0:a7c449cd2d5a 53 /* Initialize a mailbox */
guilhemMBED 0:a7c449cd2d5a 54 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 55
guilhemMBED 0:a7c449cd2d5a 56 p_MCB->cb_type = MCB;
guilhemMBED 0:a7c449cd2d5a 57 p_MCB->state = 0;
guilhemMBED 0:a7c449cd2d5a 58 p_MCB->isr_st = 0;
guilhemMBED 0:a7c449cd2d5a 59 p_MCB->p_lnk = NULL;
guilhemMBED 0:a7c449cd2d5a 60 p_MCB->first = 0;
guilhemMBED 0:a7c449cd2d5a 61 p_MCB->last = 0;
guilhemMBED 0:a7c449cd2d5a 62 p_MCB->count = 0;
guilhemMBED 0:a7c449cd2d5a 63 p_MCB->size = (mbx_size + sizeof(void *) - sizeof(struct OS_MCB)) /
guilhemMBED 0:a7c449cd2d5a 64 (U32)sizeof (void *);
guilhemMBED 0:a7c449cd2d5a 65 }
guilhemMBED 0:a7c449cd2d5a 66
guilhemMBED 0:a7c449cd2d5a 67
guilhemMBED 0:a7c449cd2d5a 68 /*--------------------------- rt_mbx_send -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 69
guilhemMBED 0:a7c449cd2d5a 70 OS_RESULT rt_mbx_send (OS_ID mailbox, void *p_msg, U16 timeout) {
guilhemMBED 0:a7c449cd2d5a 71 /* Send message to a mailbox */
guilhemMBED 0:a7c449cd2d5a 72 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 73 P_TCB p_TCB;
guilhemMBED 0:a7c449cd2d5a 74
guilhemMBED 0:a7c449cd2d5a 75 if ((p_MCB->p_lnk != NULL) && (p_MCB->state == 1)) {
guilhemMBED 0:a7c449cd2d5a 76 /* A task is waiting for message */
guilhemMBED 0:a7c449cd2d5a 77 p_TCB = rt_get_first ((P_XCB)p_MCB);
guilhemMBED 0:a7c449cd2d5a 78 #ifdef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 79 rt_ret_val2(p_TCB, 0x10/*osEventMessage*/, (U32)p_msg);
guilhemMBED 0:a7c449cd2d5a 80 #else
guilhemMBED 0:a7c449cd2d5a 81 *p_TCB->msg = p_msg;
guilhemMBED 0:a7c449cd2d5a 82 rt_ret_val (p_TCB, OS_R_MBX);
guilhemMBED 0:a7c449cd2d5a 83 #endif
guilhemMBED 0:a7c449cd2d5a 84 rt_rmv_dly (p_TCB);
guilhemMBED 0:a7c449cd2d5a 85 rt_dispatch (p_TCB);
guilhemMBED 0:a7c449cd2d5a 86 }
guilhemMBED 0:a7c449cd2d5a 87 else {
guilhemMBED 0:a7c449cd2d5a 88 /* Store message in mailbox queue */
guilhemMBED 0:a7c449cd2d5a 89 if (p_MCB->count == p_MCB->size) {
guilhemMBED 0:a7c449cd2d5a 90 /* No free message entry, wait for one. If message queue is full, */
guilhemMBED 0:a7c449cd2d5a 91 /* then no task is waiting for message. The 'p_MCB->p_lnk' list */
guilhemMBED 0:a7c449cd2d5a 92 /* pointer can now be reused for send message waits task list. */
guilhemMBED 0:a7c449cd2d5a 93 if (timeout == 0) {
guilhemMBED 0:a7c449cd2d5a 94 return (OS_R_TMO);
guilhemMBED 0:a7c449cd2d5a 95 }
guilhemMBED 0:a7c449cd2d5a 96 if (p_MCB->p_lnk != NULL) {
guilhemMBED 0:a7c449cd2d5a 97 rt_put_prio ((P_XCB)p_MCB, os_tsk.run);
guilhemMBED 0:a7c449cd2d5a 98 }
guilhemMBED 0:a7c449cd2d5a 99 else {
guilhemMBED 0:a7c449cd2d5a 100 p_MCB->p_lnk = os_tsk.run;
guilhemMBED 0:a7c449cd2d5a 101 os_tsk.run->p_lnk = NULL;
guilhemMBED 0:a7c449cd2d5a 102 os_tsk.run->p_rlnk = (P_TCB)p_MCB;
guilhemMBED 0:a7c449cd2d5a 103 /* Task is waiting to send a message */
guilhemMBED 0:a7c449cd2d5a 104 p_MCB->state = 2;
guilhemMBED 0:a7c449cd2d5a 105 }
guilhemMBED 0:a7c449cd2d5a 106 os_tsk.run->msg = p_msg;
guilhemMBED 0:a7c449cd2d5a 107 rt_block (timeout, WAIT_MBX);
guilhemMBED 0:a7c449cd2d5a 108 return (OS_R_TMO);
guilhemMBED 0:a7c449cd2d5a 109 }
guilhemMBED 0:a7c449cd2d5a 110 /* Yes, there is a free entry in a mailbox. */
guilhemMBED 0:a7c449cd2d5a 111 p_MCB->msg[p_MCB->first] = p_msg;
guilhemMBED 0:a7c449cd2d5a 112 rt_inc (&p_MCB->count);
guilhemMBED 0:a7c449cd2d5a 113 if (++p_MCB->first == p_MCB->size) {
guilhemMBED 0:a7c449cd2d5a 114 p_MCB->first = 0;
guilhemMBED 0:a7c449cd2d5a 115 }
guilhemMBED 0:a7c449cd2d5a 116 }
guilhemMBED 0:a7c449cd2d5a 117 return (OS_R_OK);
guilhemMBED 0:a7c449cd2d5a 118 }
guilhemMBED 0:a7c449cd2d5a 119
guilhemMBED 0:a7c449cd2d5a 120
guilhemMBED 0:a7c449cd2d5a 121 /*--------------------------- rt_mbx_wait -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 122
guilhemMBED 0:a7c449cd2d5a 123 OS_RESULT rt_mbx_wait (OS_ID mailbox, void **message, U16 timeout) {
guilhemMBED 0:a7c449cd2d5a 124 /* Receive a message; possibly wait for it */
guilhemMBED 0:a7c449cd2d5a 125 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 126 P_TCB p_TCB;
guilhemMBED 0:a7c449cd2d5a 127
guilhemMBED 0:a7c449cd2d5a 128 /* If a message is available in the fifo buffer */
guilhemMBED 0:a7c449cd2d5a 129 /* remove it from the fifo buffer and return. */
guilhemMBED 0:a7c449cd2d5a 130 if (p_MCB->count) {
guilhemMBED 0:a7c449cd2d5a 131 *message = p_MCB->msg[p_MCB->last];
guilhemMBED 0:a7c449cd2d5a 132 if (++p_MCB->last == p_MCB->size) {
guilhemMBED 0:a7c449cd2d5a 133 p_MCB->last = 0;
guilhemMBED 0:a7c449cd2d5a 134 }
guilhemMBED 0:a7c449cd2d5a 135 if ((p_MCB->p_lnk != NULL) && (p_MCB->state == 2)) {
guilhemMBED 0:a7c449cd2d5a 136 /* A task is waiting to send message */
guilhemMBED 0:a7c449cd2d5a 137 p_TCB = rt_get_first ((P_XCB)p_MCB);
guilhemMBED 0:a7c449cd2d5a 138 #ifdef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 139 rt_ret_val(p_TCB, 0/*osOK*/);
guilhemMBED 0:a7c449cd2d5a 140 #else
guilhemMBED 0:a7c449cd2d5a 141 rt_ret_val(p_TCB, OS_R_OK);
guilhemMBED 0:a7c449cd2d5a 142 #endif
guilhemMBED 0:a7c449cd2d5a 143 p_MCB->msg[p_MCB->first] = p_TCB->msg;
guilhemMBED 0:a7c449cd2d5a 144 if (++p_MCB->first == p_MCB->size) {
guilhemMBED 0:a7c449cd2d5a 145 p_MCB->first = 0;
guilhemMBED 0:a7c449cd2d5a 146 }
guilhemMBED 0:a7c449cd2d5a 147 rt_rmv_dly (p_TCB);
guilhemMBED 0:a7c449cd2d5a 148 rt_dispatch (p_TCB);
guilhemMBED 0:a7c449cd2d5a 149 }
guilhemMBED 0:a7c449cd2d5a 150 else {
guilhemMBED 0:a7c449cd2d5a 151 rt_dec (&p_MCB->count);
guilhemMBED 0:a7c449cd2d5a 152 }
guilhemMBED 0:a7c449cd2d5a 153 return (OS_R_OK);
guilhemMBED 0:a7c449cd2d5a 154 }
guilhemMBED 0:a7c449cd2d5a 155 /* No message available: wait for one */
guilhemMBED 0:a7c449cd2d5a 156 if (timeout == 0) {
guilhemMBED 0:a7c449cd2d5a 157 return (OS_R_TMO);
guilhemMBED 0:a7c449cd2d5a 158 }
guilhemMBED 0:a7c449cd2d5a 159 if (p_MCB->p_lnk != NULL) {
guilhemMBED 0:a7c449cd2d5a 160 rt_put_prio ((P_XCB)p_MCB, os_tsk.run);
guilhemMBED 0:a7c449cd2d5a 161 }
guilhemMBED 0:a7c449cd2d5a 162 else {
guilhemMBED 0:a7c449cd2d5a 163 p_MCB->p_lnk = os_tsk.run;
guilhemMBED 0:a7c449cd2d5a 164 os_tsk.run->p_lnk = NULL;
guilhemMBED 0:a7c449cd2d5a 165 os_tsk.run->p_rlnk = (P_TCB)p_MCB;
guilhemMBED 0:a7c449cd2d5a 166 /* Task is waiting to receive a message */
guilhemMBED 0:a7c449cd2d5a 167 p_MCB->state = 1;
guilhemMBED 0:a7c449cd2d5a 168 }
guilhemMBED 0:a7c449cd2d5a 169 rt_block(timeout, WAIT_MBX);
guilhemMBED 0:a7c449cd2d5a 170 #ifndef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 171 os_tsk.run->msg = message;
guilhemMBED 0:a7c449cd2d5a 172 #endif
guilhemMBED 0:a7c449cd2d5a 173 return (OS_R_TMO);
guilhemMBED 0:a7c449cd2d5a 174 }
guilhemMBED 0:a7c449cd2d5a 175
guilhemMBED 0:a7c449cd2d5a 176
guilhemMBED 0:a7c449cd2d5a 177 /*--------------------------- rt_mbx_check ----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 178
guilhemMBED 0:a7c449cd2d5a 179 OS_RESULT rt_mbx_check (OS_ID mailbox) {
guilhemMBED 0:a7c449cd2d5a 180 /* Check for free space in a mailbox. Returns the number of messages */
guilhemMBED 0:a7c449cd2d5a 181 /* that can be stored to a mailbox. It returns 0 when mailbox is full. */
guilhemMBED 0:a7c449cd2d5a 182 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 183
guilhemMBED 0:a7c449cd2d5a 184 return (p_MCB->size - p_MCB->count);
guilhemMBED 0:a7c449cd2d5a 185 }
guilhemMBED 0:a7c449cd2d5a 186
guilhemMBED 0:a7c449cd2d5a 187
guilhemMBED 0:a7c449cd2d5a 188 /*--------------------------- isr_mbx_send ----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 189
guilhemMBED 0:a7c449cd2d5a 190 void isr_mbx_send (OS_ID mailbox, void *p_msg) {
guilhemMBED 0:a7c449cd2d5a 191 /* Same function as "os_mbx_send", but to be called by ISRs. */
guilhemMBED 0:a7c449cd2d5a 192 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 193
guilhemMBED 0:a7c449cd2d5a 194 rt_psq_enq (p_MCB, (U32)p_msg);
guilhemMBED 0:a7c449cd2d5a 195 rt_psh_req ();
guilhemMBED 0:a7c449cd2d5a 196 }
guilhemMBED 0:a7c449cd2d5a 197
guilhemMBED 0:a7c449cd2d5a 198
guilhemMBED 0:a7c449cd2d5a 199 /*--------------------------- isr_mbx_receive -------------------------------*/
guilhemMBED 0:a7c449cd2d5a 200
guilhemMBED 0:a7c449cd2d5a 201 OS_RESULT isr_mbx_receive (OS_ID mailbox, void **message) {
guilhemMBED 0:a7c449cd2d5a 202 /* Receive a message in the interrupt function. The interrupt function */
guilhemMBED 0:a7c449cd2d5a 203 /* should not wait for a message since this would block the rtx os. */
guilhemMBED 0:a7c449cd2d5a 204 P_MCB p_MCB = mailbox;
guilhemMBED 0:a7c449cd2d5a 205
guilhemMBED 0:a7c449cd2d5a 206 if (p_MCB->count) {
guilhemMBED 0:a7c449cd2d5a 207 /* A message is available in the fifo buffer. */
guilhemMBED 0:a7c449cd2d5a 208 *message = p_MCB->msg[p_MCB->last];
guilhemMBED 0:a7c449cd2d5a 209 if (p_MCB->state == 2) {
guilhemMBED 0:a7c449cd2d5a 210 /* A task is locked waiting to send message */
guilhemMBED 0:a7c449cd2d5a 211 rt_psq_enq (p_MCB, 0);
guilhemMBED 0:a7c449cd2d5a 212 rt_psh_req ();
guilhemMBED 0:a7c449cd2d5a 213 }
guilhemMBED 0:a7c449cd2d5a 214 rt_dec (&p_MCB->count);
guilhemMBED 0:a7c449cd2d5a 215 if (++p_MCB->last == p_MCB->size) {
guilhemMBED 0:a7c449cd2d5a 216 p_MCB->last = 0;
guilhemMBED 0:a7c449cd2d5a 217 }
guilhemMBED 0:a7c449cd2d5a 218 return (OS_R_MBX);
guilhemMBED 0:a7c449cd2d5a 219 }
guilhemMBED 0:a7c449cd2d5a 220 return (OS_R_OK);
guilhemMBED 0:a7c449cd2d5a 221 }
guilhemMBED 0:a7c449cd2d5a 222
guilhemMBED 0:a7c449cd2d5a 223
guilhemMBED 0:a7c449cd2d5a 224 /*--------------------------- rt_mbx_psh ------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 225
guilhemMBED 0:a7c449cd2d5a 226 void rt_mbx_psh (P_MCB p_CB, void *p_msg) {
guilhemMBED 0:a7c449cd2d5a 227 /* Store the message to the mailbox queue or pass it to task directly. */
guilhemMBED 0:a7c449cd2d5a 228 P_TCB p_TCB;
guilhemMBED 0:a7c449cd2d5a 229 void *mem;
guilhemMBED 0:a7c449cd2d5a 230
guilhemMBED 0:a7c449cd2d5a 231 if (p_CB->p_lnk != NULL) switch (p_CB->state) {
guilhemMBED 0:a7c449cd2d5a 232 #ifdef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 233 case 3:
guilhemMBED 0:a7c449cd2d5a 234 /* Task is waiting to allocate memory, remove it from the waiting list */
guilhemMBED 0:a7c449cd2d5a 235 mem = rt_alloc_box(p_msg);
guilhemMBED 0:a7c449cd2d5a 236 if (mem == NULL) break;
guilhemMBED 0:a7c449cd2d5a 237 p_TCB = rt_get_first ((P_XCB)p_CB);
guilhemMBED 0:a7c449cd2d5a 238 rt_ret_val(p_TCB, (U32)mem);
guilhemMBED 0:a7c449cd2d5a 239 p_TCB->state = READY;
guilhemMBED 0:a7c449cd2d5a 240 rt_rmv_dly (p_TCB);
guilhemMBED 0:a7c449cd2d5a 241 rt_put_prio (&os_rdy, p_TCB);
guilhemMBED 0:a7c449cd2d5a 242 break;
guilhemMBED 0:a7c449cd2d5a 243 #endif
guilhemMBED 0:a7c449cd2d5a 244 case 2:
guilhemMBED 0:a7c449cd2d5a 245 /* Task is waiting to send a message, remove it from the waiting list */
guilhemMBED 0:a7c449cd2d5a 246 p_TCB = rt_get_first ((P_XCB)p_CB);
guilhemMBED 0:a7c449cd2d5a 247 #ifdef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 248 rt_ret_val(p_TCB, 0/*osOK*/);
guilhemMBED 0:a7c449cd2d5a 249 #else
guilhemMBED 0:a7c449cd2d5a 250 rt_ret_val(p_TCB, OS_R_OK);
guilhemMBED 0:a7c449cd2d5a 251 #endif
guilhemMBED 0:a7c449cd2d5a 252 p_CB->msg[p_CB->first] = p_TCB->msg;
guilhemMBED 0:a7c449cd2d5a 253 rt_inc (&p_CB->count);
guilhemMBED 0:a7c449cd2d5a 254 if (++p_CB->first == p_CB->size) {
guilhemMBED 0:a7c449cd2d5a 255 p_CB->first = 0;
guilhemMBED 0:a7c449cd2d5a 256 }
guilhemMBED 0:a7c449cd2d5a 257 p_TCB->state = READY;
guilhemMBED 0:a7c449cd2d5a 258 rt_rmv_dly (p_TCB);
guilhemMBED 0:a7c449cd2d5a 259 rt_put_prio (&os_rdy, p_TCB);
guilhemMBED 0:a7c449cd2d5a 260 break;
guilhemMBED 0:a7c449cd2d5a 261 case 1:
guilhemMBED 0:a7c449cd2d5a 262 /* Task is waiting for a message, pass the message to the task directly */
guilhemMBED 0:a7c449cd2d5a 263 p_TCB = rt_get_first ((P_XCB)p_CB);
guilhemMBED 0:a7c449cd2d5a 264 #ifdef __CMSIS_RTOS
guilhemMBED 0:a7c449cd2d5a 265 rt_ret_val2(p_TCB, 0x10/*osEventMessage*/, (U32)p_msg);
guilhemMBED 0:a7c449cd2d5a 266 #else
guilhemMBED 0:a7c449cd2d5a 267 *p_TCB->msg = p_msg;
guilhemMBED 0:a7c449cd2d5a 268 rt_ret_val (p_TCB, OS_R_MBX);
guilhemMBED 0:a7c449cd2d5a 269 #endif
guilhemMBED 0:a7c449cd2d5a 270 p_TCB->state = READY;
guilhemMBED 0:a7c449cd2d5a 271 rt_rmv_dly (p_TCB);
guilhemMBED 0:a7c449cd2d5a 272 rt_put_prio (&os_rdy, p_TCB);
guilhemMBED 0:a7c449cd2d5a 273 break;
guilhemMBED 0:a7c449cd2d5a 274 } else {
guilhemMBED 0:a7c449cd2d5a 275 /* No task is waiting for a message, store it to the mailbox queue */
guilhemMBED 0:a7c449cd2d5a 276 if (p_CB->count < p_CB->size) {
guilhemMBED 0:a7c449cd2d5a 277 p_CB->msg[p_CB->first] = p_msg;
guilhemMBED 0:a7c449cd2d5a 278 rt_inc (&p_CB->count);
guilhemMBED 0:a7c449cd2d5a 279 if (++p_CB->first == p_CB->size) {
guilhemMBED 0:a7c449cd2d5a 280 p_CB->first = 0;
guilhemMBED 0:a7c449cd2d5a 281 }
guilhemMBED 0:a7c449cd2d5a 282 }
guilhemMBED 0:a7c449cd2d5a 283 else {
guilhemMBED 0:a7c449cd2d5a 284 os_error (OS_ERR_MBX_OVF);
guilhemMBED 0:a7c449cd2d5a 285 }
guilhemMBED 0:a7c449cd2d5a 286 }
guilhemMBED 0:a7c449cd2d5a 287 }
guilhemMBED 0:a7c449cd2d5a 288
guilhemMBED 0:a7c449cd2d5a 289 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 290 * end of file
guilhemMBED 0:a7c449cd2d5a 291 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 292