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