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63 lines
1.4 KiB
63 lines
1.4 KiB
/* |
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* Copyright (C) 2014 Freie Universität Berlin |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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/** |
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* @ingroup examples |
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* @{ |
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* |
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* @file |
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* @brief IPC pingpong application |
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* |
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* @author Kaspar Schleiser <kaspar@schleiser.de> |
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de> |
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* |
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* @} |
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*/ |
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#include <stdio.h> |
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#include "thread.h" |
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#include "msg.h" |
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void *second_thread(void *arg) |
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{ |
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(void) arg; |
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printf("2nd thread started, pid: %" PRIkernel_pid "\n", thread_getpid()); |
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msg_t m; |
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while (1) { |
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msg_receive(&m); |
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printf("2nd: Got msg from %" PRIkernel_pid "\n", m.sender_pid); |
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m.content.value++; |
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msg_reply(&m, &m); |
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} |
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return NULL; |
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} |
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char second_thread_stack[THREAD_STACKSIZE_MAIN]; |
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int main(void) |
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{ |
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printf("Starting IPC Ping-pong example...\n"); |
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printf("1st thread started, pid: %" PRIkernel_pid "\n", thread_getpid()); |
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msg_t m; |
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kernel_pid_t pid = thread_create(second_thread_stack, sizeof(second_thread_stack), |
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THREAD_PRIORITY_MAIN - 1, THREAD_CREATE_STACKTEST, |
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second_thread, NULL, "pong"); |
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m.content.value = 1; |
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while (1) { |
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msg_send_receive(&m, &m, pid); |
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printf("1st: Got msg with content %u\n", (unsigned int)m.content.value); |
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} |
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}
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