Finished C5471 Integration

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@48 7fd9a85b-ad96-42d3-883c-3090e2eb8679

nuttx/ChangeLog

@@ -0,0 +1,5 @@
+0.1.0 2007-03-09  Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Initial Release
+	* Support for Linux user mode simulation and TI
+	  TMS320C5471 (Arm7) provided

nuttx/Documentation/NuttX.html

@@ -28,8 +28,8 @@
     NuttX operates on the ARM7 of this dual core processor.
     This port uses the <a href="http://www.spectrumdigital.com/">Spectrum Digital</a>
     evaluation board with a GNU arm-elf toolchain*.
-    This port is in progress and partially functional (However,
+    This port is complete, verified, and included in the initial NuttX
-    my board is dead at the moment so it will be awhile before I fix it)</li>
+    release.</li>
 <li><b>8051 Microcontroller</b>.
     This port uses the <a href="http://www.pjrc.com/">PJRC</a> 87C52 development system
     and the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain.
@@ -43,17 +43,18 @@ is available that be used to build a NuttX-compatible arm-elf toolchain.</blockq
 
 <h1>Memory Footprint</h1>
 
-<p>Details to be provided</p>
+<p><b>C5471 (Arm7)</b>
-
+  The build for this ARM7 target that includes most of the OS features and
-<p>
+  a broad range of OS tests.  The size of this executable as given by the
-  I have a complete build for an ARM7 target that includes most of the OS
+  Linux <tt>size</tt> command is:
-  features and a broad range of OS tests.
-  That builds to an executable that requires about 85Kb for .text, .data., and .bss.
 </p>
-<p>
+<pre>
-  I have a stripped down OS test for the 8051 target that requires only
+   text    data     bss     dec     hex filename
-  18Kb.  A substantial effort was required to get to this size
+  53272     428    3568   57268    dfb4 nuttx
-  (see <a href="codesize-070301.xls">spreadsheet</a> for details).
+</pre>
+<p><b>87C52</b>
+  A reduced functionality OS test for the 8051 target requires only
+  about 18Kb (see <a href="codesize-070301.xls">spreadsheet</a> for details).
 </p>
 
 <h1>Licensing</h1>

nuttx/Documentation/NuttxUserGuide.html

@@ -27,7 +27,7 @@ Gregory Nutt
 <H1>1.0 <A NAME="Introduction">Introduction</A></H1>
 
 <P>
-This user's manual is divided into five sections:
+This user's manual is divided into three sections:
 <UL>
 <LI><B>Section 1.0, <A HREF="#Introduction">Introduction</A></B>:
 This section provides an overview of the Nuttx user's manual.
@@ -48,8 +48,6 @@ into several paragraphs that describe different groups of OS interfaces:
 <LI><B>Section 3.0, <A HREF="#Data_Structures">OS Data Structures</A></B>:
 This section documents the data structures that are used at the Nuttx
 interface.
-<LI><B>Section 4.0, <A HREF="#Problems">Known Problems</A></B>.  This section
-lists known problems in the latest release of Nuttx.
 </UL>
 <HR>
 
@@ -4113,28 +4111,5 @@ notify a task when a message is available on a queue.
   have to do some redesign.
 </p>
 
-<HR>
-
-<H1>4.0 <A NAME="Problems">Known Problems</A></H1>
-
-<P>
-This section documents know problems with Nuttx at the time
-of this writing.
-<P>
-<HR>
-<B>Problem</B>: 
-There is a problem with the unblock logic in os_signal.c when message queue
-becomes not-empty -- sig_mqnotempty() calls sig_received().
-sig_received() relies on task_state == TSTATE_WAIT_SIG and will ignore
-tasks that are waiting on a message queue to become non-empty.
-<P>
-<B>Priority</B>: <B>LOW</B>.  If a task is blocked a waiting for a message
-queue to become non-empty, it will be re-started anyway.
-<HR>
-
-<B>Problem</B>: task_restart won't restart a running task
-<P>
-<B>Priority</B>: <B>LOW</B>.
-
 </BODY>
 </HTML>

nuttx/ReleaseNotes

@@ -0,0 +1,12 @@
+Nuttx-0.1.0
+^^^^^^^^^^^
+
+This is the initial.  This initial includes the complete NuttX RTOS
+with support for the Linux user mode simulation and the TI TMS320C5471
+(Arm7) processor.  Partial support for the 87C52 is included.
+
+This release has been verified on both the Linux user-mode and C5471
+platforms using the test program under examples/ostest.  Test results
+for the C5471 can be found in arch/c5471/doc/test-results.txt.
+
+This tarball contains a complete CVS snapshot from March 9,2007.

nuttx/arch/c5471/src/up_internal.h

@@ -51,7 +51,7 @@
 
 #undef  CONFIG_SUPPRESS_INTERRUPTS    /* Do not enable interrupts */
 #undef  CONFIG_SUPPRESS_TIMER_INTS    /* No timer */
-#define CONFIG_SUPPRESS_SERIAL_INTS 1 /* Console will poll */
+#undef  CONFIG_SUPPRESS_SERIAL_INTS   /* Console will poll */
 #undef  CONFIG_SUPPRESS_UART_CONFIG   /* Do not reconfig UART */
 #undef  CONFIG_DUMP_ON_EXIT           /* Dumpt task state on exit */
 

nuttx/arch/c5471/src/up_serial.c

@@ -79,10 +79,11 @@ struct uart_regs_s
 
 struct uart_buffer_s
 {
-  int   head;
+  sem_t  sem;    /* Used to control exclusive access to the buffer */
-  int   tail;
+  sint16 head;   /* Index to the head [IN] index in the buffer */
-  int   size;
+  sint16 tail;   /* Index to the tail [OUT] index in the buffer */
-  char *buffer;
+  sint16 size;   /* The allocated size of the buffer */
+  char  *buffer; /* Pointer to the allocated buffer memory */
 };
 
 struct up_dev_s
@@ -608,6 +609,7 @@ static void up_putxmitchar(up_dev_t *dev, int ch)
         }
       else
         {
+#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_SERIAL_INTS)
           /* Transfer some characters with interrupts disabled */
 
           up_xmitchars(dev);
@@ -621,20 +623,23 @@ static void up_putxmitchar(up_dev_t *dev, int ch)
             {
               /* Still no space */
 
-#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_SERIAL_INTS)
               up_waittxfifonotfull(dev);
-#else
-              dev->xmitwaiting = TRUE;
-
-              /* Wait for some characters to be sent from the buffer
-               * with the TX interrupt disabled.
-               */
-
-              up_enabletxint(dev);
-              up_takesem(&dev->xmitsem);
-              up_disabletxint(dev);
-#endif
             }
+#else
+          /* Inform the interrupt level logic that we are waiting */
+
+          dev->xmitwaiting = TRUE;
+
+          /* Wait for some characters to be sent from the buffer
+           * with the TX interrupt enabled.  When the TX interrupt
+           * is enabled, up_xmitchars should execute and remove
+           * some of the data from the TX buffer.
+           */
+
+          up_enabletxint(dev);
+          up_takesem(&dev->xmitsem);
+          up_disabletxint(dev);
+#endif
         }
     }
 }
@@ -805,6 +810,10 @@ static ssize_t up_write(struct file *filep, const char *buffer, size_t buflen)
   up_dev_t     *dev      = inode->i_private;
   ssize_t       ret      = buflen;
 
+  /* Only one user can be accessing dev->xmit.head at once */
+
+  up_takesem(&dev->xmit.sem);
+
   /* Loop while we still have data to copy to the transmit buffer.
    * we add data to the head of the buffer; up_xmitchars takes the
    * data from the end of the buffer.
@@ -829,13 +838,14 @@ static ssize_t up_write(struct file *filep, const char *buffer, size_t buflen)
 
   if (dev->xmit.head != dev->xmit.tail)
     {
+#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_SERIAL_INTS)
       up_xmitchars(dev);
-      if (dev->xmit.head != dev->xmit.tail)
+#else
-        {
+      up_enabletxint(dev);
-          up_enabletxint(dev);
+#endif
-        }
     }
 
+  up_givesem(&dev->xmit.sem);
   return ret;
 }
 
@@ -849,6 +859,10 @@ static ssize_t up_read(struct file *filep, char *buffer, size_t buflen)
   up_dev_t     *dev   = inode->i_private;
   ssize_t       ret   = buflen;
 
+  /* Only one user can be accessing dev->recv.tail at once */
+
+  up_takesem(&dev->recv.sem);
+
   /* Loop while we still have data to copy to the receive buffer.
    * we add data to the head of the buffer; up_xmitchars takes the
    * data from the end of the buffer.
@@ -862,7 +876,7 @@ static ssize_t up_read(struct file *filep, char *buffer, size_t buflen)
           *buffer++ = dev->recv.buffer[dev->recv.tail];
           buflen--;
 
-          if (++dev->recv.tail >= dev->recv.size)
+          if (++(dev->recv.tail) >= dev->recv.size)
             {
               dev->recv.tail = 0;
             }
@@ -881,7 +895,7 @@ static ssize_t up_read(struct file *filep, char *buffer, size_t buflen)
     }
 
   up_enablerxint(dev);
-
+  up_takesem(&dev->recv.sem);
   return ret;
 }
 
@@ -1068,8 +1082,11 @@ static void up_devinit(up_dev_t *dev,
    * statically initialized.
    */
 
+  sem_init(&dev->xmit.sem, 0, 1);
   dev->xmit.size   = txbufsize;
   dev->xmit.buffer = txbuffer;
+
+  sem_init(&dev->recv.sem, 0, 1);
   dev->recv.size   = rxbufsize;
   dev->recv.buffer = rxbuffer;
 

nuttx/examples/ostest/sighand.c

@@ -216,16 +216,19 @@ void sighand_test(void)
     }
   else
     {
-       printf("sighand_test: Started waiter_main pid=%d\n" , waiterpid);
+      printf("sighand_test: Started waiter_main pid=%d\n", waiterpid);
     }
 
   /* Wait a bit */
 
   fflush(stdout);
-  usleep(500*1000);
+  sleep(2);
 
   /* Then signal the waiter thread. */
 
+  printf("sighand_test: Signaling pid=%d with signo=%d sigvalue=%d\n",
+         waiterpid, WAKEUP_SIGNAL, SIGVALUE_INT);
+
   sigvalue.sival_int = SIGVALUE_INT;
 #ifdef CONFIG_CAN_PASS_STRUCTS
   status = sigqueue(waiterpid, WAKEUP_SIGNAL, sigvalue);
@@ -241,7 +244,7 @@ void sighand_test(void)
   /* Wait a bit */
 
   fflush(stdout);
-  usleep(500*1000);
+  sleep(2);
 
   /* Then check the result */
 

nuttx/examples/ostest/timedwait.c

@@ -161,6 +161,7 @@ void timedwait_test(void)
     }
 
   printf("timedwait_test: Joining\n");
+  fflush(stdout);
   status = pthread_join(waiter, &result);
   if (status != 0)
     {