Add I2C trace capability; Fix another STM32 I2C/FSMC bug; add verify command to the I2C tool

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3961 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 249 insertions, 0 deletions

diff --git a/apps/system/i2c/i2c_verf.c b/apps/system/i2c/i2c_verf.c
new file mode 100644
index 000000000..0fa34b96e
--- /dev/null
+++ b/apps/system/i2c/i2c_verf.c
@@ -0,0 +1,249 @@
+/****************************************************************************
+ * apps/system/i2c/i2c_verf.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdlib.h>
+
+#include <nuttx/i2c.h>
+
+#include "i2ctool.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: i2ccmd_verf
+ ****************************************************************************/
+
+int i2ccmd_verf(FAR struct i2ctool_s *i2ctool, int argc, FAR char **argv)
+{
+  FAR struct i2c_dev_s *dev;
+  FAR char *ptr;
+  uint16_t rdvalue;
+  uint8_t regaddr;
+  bool addrinaddr;
+  long wrvalue;
+  long repititions;
+  int nargs;
+  int argndx;
+  int ret;
+  int i;
+
+  /* Parse any command line arguments */
+
+  for (argndx = 1; argndx < argc; )
+    {
+      /* Break out of the look when the last option has been parsed */
+
+      ptr = argv[argndx];
+      if (*ptr != '-')
+        {
+          break;
+        }
+
+      /* Otherwise, check for common options */
+
+      nargs = common_args(i2ctool, &argv[argndx]);
+      if (nargs < 0)
+        {
+          return ERROR;
+        }
+      argndx += nargs;
+    }
+
+  /* The options may be followed by the optional wrvalue to be written.  If omitted, then
+   * the register address will be used as the wrvalue, providing an address-in-address
+   * test.
+   */
+
+  addrinaddr = true;
+  wrvalue    = 0;
+
+  if (argndx < argc)
+    {
+      wrvalue = strtol(argv[argndx], NULL, 16);
+      if (i2ctool->width == 8)
+        {
+          if (wrvalue < 0 || wrvalue > 255)
+            {
+              i2ctool_printf(i2ctool, g_i2cargrange, argv[0]);
+              return ERROR;
+            }
+        }
+      else if (wrvalue < 0 || wrvalue > 65535)
+        {
+          i2ctool_printf(i2ctool, g_i2cargrange, argv[0]);
+          return ERROR;
+        }
+
+      addrinaddr = false;
+      argndx++;
+    }
+
+  /* There may be one more thing on the command line:  The repitition
+   * count.
+   */
+
+  repititions = 1;
+  if (argndx < argc)
+    {
+      repititions = strtol(argv[argndx], NULL, 16);
+      if (repititions < 1)
+        {
+          i2ctool_printf(i2ctool, g_i2cargrange, argv[0]);
+          return ERROR;
+        }
+
+      argndx++;
+    }
+
+  if (argndx != argc)
+    {
+      i2ctool_printf(i2ctool, g_i2ctoomanyargs, argv[0]);
+      return ERROR;
+    }
+
+  /* Get a handle to the I2C bus */
+
+  dev = up_i2cinitialize(i2ctool->bus);
+  if (!dev)
+    {
+       i2ctool_printf(i2ctool, "Failed to get bus %d\n", i2ctool->bus);
+       return ERROR;
+    }
+
+  /* Set the frequency and the address (NOTE:  Only 7-bit address supported now) */
+
+  I2C_SETFREQUENCY(dev, i2ctool->freq);
+  I2C_SETADDRESS(dev, i2ctool->addr, 7);
+
+  /* Loop for the requested number of repititions */
+
+  regaddr = i2ctool->regaddr;
+  ret = OK;
+
+  for (i = 0; i < repititions; i++)
+    {
+      /* If we are performing an address-in-address test, then use the register
+       * address as the value to write.
+       */
+
+      if (addrinaddr)
+        {
+          wrvalue = regaddr;
+        }
+
+      /* Write to the I2C bus */
+
+      ret = i2ctool_set(i2ctool, dev, regaddr, (uint16_t)wrvalue);
+      if (ret == OK)
+        {
+          /* Read the value back from the I2C bus */
+
+          ret = i2ctool_get(i2ctool, dev, regaddr, &rdvalue);
+        }
+
+      /* Display the result */
+
+      if (ret == OK)
+        {
+          i2ctool_printf(i2ctool, "VERIFY Bus: %d Addr: %02x Subaddr: %02x Wrote: ",
+                         i2ctool->bus, i2ctool->addr, i2ctool->regaddr);
+
+          if (i2ctool->width == 8)
+            {
+              i2ctool_printf(i2ctool, "%02x Read: %02x", (int)wrvalue, (int)rdvalue);
+            }
+          else
+            {
+              i2ctool_printf(i2ctool, "%04x Read: %04x", (int)wrvalue, (int)rdvalue);
+            }
+
+          if (wrvalue != rdvalue)
+            {
+              i2ctool_printf(i2ctool, "  <<< FAILURE\n");
+            }
+          else
+            {
+              i2ctool_printf(i2ctool, "\n");
+            }
+        }
+      else
+        {
+          i2ctool_printf(i2ctool, g_i2cxfrerror, argv[0], -ret);
+          break;
+        }
+
+      /* Auto-increment the address if so configured */
+
+      if (i2ctool->autoincr)
+        {
+          regaddr++;
+        }
+    }
+
+  (void)up_i2cuninitialize(dev);
+  return ret;
+}