added cli support

demos/host/src/cli.c

@@ -0,0 +1,160 @@
+/**************************************************************************/
+/*!
+    @file     cli.c
+    @author   hathach (tinyusb.org)
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2013, hathach (tinyusb.org)
+    All rights reserved.
+
+    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 of the copyright holders 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 ''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 HOLDER 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.
+*/
+/**************************************************************************/
+
+#include "cli.h"
+#include "ctype.h"
+
+#if TUSB_CFG_HOST_MSC
+
+// command, function, description
+#define CLI_COMMAND_TABLE(ENTRY)   \
+    ENTRY(unknow , cli_cmd_unknow, NULL) \
+    ENTRY(help   , cli_cmd_help, NULL)   \
+
+//--------------------------------------------------------------------+
+// Expands the function to have the standard function signature
+//--------------------------------------------------------------------+
+#define CLI_PROTOTYPE_EXPAND(command, function, description) \
+    tusb_error_t function(char const *);\
+
+CLI_COMMAND_TABLE(CLI_PROTOTYPE_EXPAND);
+
+//--------------------------------------------------------------------+
+// Expand to enum value
+//--------------------------------------------------------------------+
+#define CLI_ENUM_EXPAND(command, function, description)    CLI_CMDTYPE_##command,
+typedef enum {
+  CLI_COMMAND_TABLE(CLI_ENUM_EXPAND)
+  CLI_CMDTYPE_COUNT
+}cli_cmdtype_t;
+
+//--------------------------------------------------------------------+
+// Expand to string table
+//--------------------------------------------------------------------+
+#define CLI_STRING_EXPAND(command, function, description)    #command,
+char const* const cli_string_tbl[] =
+{
+  CLI_COMMAND_TABLE(CLI_STRING_EXPAND)
+  0
+};
+
+//--------------------------------------------------------------------+
+// Expand to Description table
+//--------------------------------------------------------------------+
+#define CLI_DESCRIPTION_EXPAND(command, function, description)    description,
+char const* const cli_description_tbl[] =
+{
+  CLI_COMMAND_TABLE(CLI_DESCRIPTION_EXPAND)
+  0
+};
+
+
+//--------------------------------------------------------------------+
+// Expand to Command Lookup Table
+//--------------------------------------------------------------------+
+#define CMD_LOOKUP_EXPAND(command, function, description)\
+  [CLI_CMDTYPE_##command] = function,\
+
+typedef tusb_error_t (* const cli_cmdfunc_t)(char const *);
+static cli_cmdfunc_t cli_command_tbl[] =
+{
+  CLI_COMMAND_TABLE(CMD_LOOKUP_EXPAND)
+};
+
+//--------------------------------------------------------------------+
+// IMPLEMENTATION
+//--------------------------------------------------------------------+
+tusb_error_t cli_cmd_unknow(char const * para)
+{
+  puts("unknown command, please type \"help\"");
+  return TUSB_ERROR_NONE;
+}
+
+tusb_error_t cli_cmd_help(char const * para)
+{
+  puts("current supported commands are:");
+  puts("cd\tchange directory");
+  puts("ls\tlist directory");
+
+  return TUSB_ERROR_NONE;
+}
+
+
+#define CLI_MAX_BUFFER   50
+static char cli_buffer[CLI_MAX_BUFFER];
+
+void cli_init(void)
+{
+  memclr_(cli_buffer, CLI_MAX_BUFFER);
+}
+
+void cli_poll(char ch)
+{
+  if ( isprint(ch) )
+  {
+    if (strlen(cli_buffer) < CLI_MAX_BUFFER)
+    {
+      cli_buffer[ strlen(cli_buffer) ] = ch;
+      putchar(ch);
+    }else
+    {
+      puts("cli buffer overflows");
+      memclr_(cli_buffer, CLI_MAX_BUFFER);
+    }
+  }
+  else if ( ch == '\r')
+  {
+    putchar('\n');
+    for(cli_cmdtype_t cmd_id = CLI_CMDTYPE_help; cmd_id < CLI_CMDTYPE_COUNT; cmd_id++)
+    {
+      if( 0 == strncmp(cli_buffer, cli_string_tbl[cmd_id], CLI_MAX_BUFFER) )
+      {
+        cli_command_tbl[cmd_id](NULL);
+        memclr_(cli_buffer, CLI_MAX_BUFFER);
+        return;
+      }
+    }
+
+    cli_cmd_unknow(NULL);
+    memclr_(cli_buffer, CLI_MAX_BUFFER);
+  }
+  else if (ch=='\t') // \t may be used for auto-complete later
+  {
+
+  }
+}
+
+#endif