Add nuttx to the system framework, which is 10.1.0

2021-06-09 14:33:15 +08:00
parent 06c351e27c
commit 804bd57aa0
5000 changed files with 1488544 additions and 0 deletions
@@ -0,0 +1,191 @@
+/****************************************************************************
+ * examples/cpuhog/cpuhog_main.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Authors: Gregory Nutt <gnutt@nuttx.org>
+ *            Bob Doiron
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Example usage:
+ *
+ * NuttShell (NSH)
+ * nsh> cpuhog > /dev/ttyS1 &
+ * cpuhog [5:50]
+ * nsh> cpuhog > /dev/ttyS2 &
+ * cpuhog [7:50]
+ * nsh> cpuhog &
+ * cpuhog [8:50]
+ * nsh> cpuhog 2
+ * ps
+ * PID   PRI SCHD TYPE   NP STATE    CPU    NAME
+ *     0   0 FIFO TASK      READY      0.9% Idle Task()
+ *     1 192 FIFO KTHREAD   WAITSIG    0.0% work()
+ *     2 200 FIFO KTHREAD   WAITSIG    0.0% wdog()
+ *     3 100 FIFO TASK      RUNNING    0.0% init()
+ *     5  50 RR   TASK      WAITSEM   27.7% cpuhog(20009c70, 20009c80)
+ *     7  50 RR   TASK      WAITSEM   30.3% cpuhog(20008c00, 20008c10)
+ *     8  50 RR   TASK      READY     41.7% cpuhog()
+ * nsh>
+ *
+ ****************************************************************************/
+
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <nuttx/clock.h>
+#include <nuttx/arch.h>
+#include <semaphore.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define CPUHOG_FIFO_FNAME "/dev/cpuhogfifo"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct state_s
+{
+  volatile bool initialized;
+  sem_t sem;
+  int count;
+} g_state;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+  int id = -1;
+  char buf[256];
+  int fd = -1;
+
+  if (!g_state.initialized)
+    {
+      sem_init(&g_state.sem, 0, 1);
+      mkfifo(CPUHOG_FIFO_FNAME, 0666);
+      g_state.count = 0;
+      g_state.initialized = true;
+      printf("cpuhog initialized\n");
+    }
+
+  while(1)
+    {
+      /* To test semaphore interaction (debugging system crashes...) */
+
+      while (sem_wait(&g_state.sem) != 0)
+        {
+          DEBUGASSERT(errno == EINTR || errno == ECANCELED);
+        }
+
+      /* Burn some inside semlock */
+
+      up_udelay(3000);
+      sem_post(&g_state.sem);
+
+      /* Unassigned */
+
+      if (id == -1)
+        {
+          id = g_state.count++;
+          printf("cpuhog %d", id);
+          if (id == 0)
+            {
+              printf(": consumer\n");
+              fd = open(CPUHOG_FIFO_FNAME, O_RDONLY);
+            }
+          else if (id == 1)
+            {
+              printf(": producer\n");
+              fd = open(CPUHOG_FIFO_FNAME, O_WRONLY);
+            }
+          else
+            {
+              printf("\n");
+            }
+        }
+
+      /* Consumer */
+
+      else if (id == 0)
+        {
+          if (read(fd, buf, sizeof(buf)) > 0)
+            {
+              printf("-");
+            }
+          else
+            {
+              perror("fifo: ");
+            }
+        }
+
+      /* Producer */
+
+      else if (id == 1)
+        {
+          if (write(fd, buf, sizeof(buf)) > 0)
+            {
+              printf("+");
+            }
+          else
+            {
+              perror("fifo: ");
+            }
+        }
+
+      /* Otherwise just a cpu burner */
+
+      else
+        {
+          /* Burn some outside semlock */
+
+          up_udelay(3000);
+        }
+
+      fflush(stdout);
+    }
+
+  return 0;
+}