From 1836082a7a7fa835829ca56b22d1ca203c9b200f Mon Sep 17 00:00:00 2001
From: "Brian S. Dean" <bsd@bsdhome.com>
Date: Fri, 21 Feb 2003 18:46:51 +0000
Subject: [PATCH] Add port name defaults to the config file instead of
 hard-coding. This adds 'default_parallel' and 'default_serial' keywords to
 the grammar, which take quoted string arguments.

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@214 81a1dc3b-b13d-400b-aceb-764788c761c2
---
 avrdude/avrdude.conf.sample |  7 +++++++
 avrdude/config.c            |  3 +++
 avrdude/config.h            |  4 ++++
 avrdude/config_gram.y       | 17 ++++++++++++++++-
 avrdude/lexer.l             |  2 ++
 avrdude/main.c              | 25 +++++++++++++++++++------
 6 files changed, 51 insertions(+), 7 deletions(-)

diff --git a/avrdude/avrdude.conf.sample b/avrdude/avrdude.conf.sample
index 8a853257..158d55bf 100644
--- a/avrdude/avrdude.conf.sample
+++ b/avrdude/avrdude.conf.sample
@@ -169,6 +169,13 @@
 #define AT89S52	    0xE1
 
 
+#
+# Overall avrdude defaults
+#
+default_parallel = "/dev/ppi0";
+default_serial   = "/dev/cuaa0";
+
+
 #
 # PROGRAMMER DEFINITIONS
 #
diff --git a/avrdude/config.c b/avrdude/config.c
index 618850c8..f66e9a8f 100644
--- a/avrdude/config.c
+++ b/avrdude/config.c
@@ -30,6 +30,9 @@
 #include "config.h"
 #include "config_gram.h"
 
+char default_parallel[PATH_MAX];
+char default_serial[PATH_MAX];
+
 char string_buf[MAX_STR_CONST];
 char *string_buf_ptr;
 
diff --git a/avrdude/config.h b/avrdude/config.h
index 00fb4b91..3e34b0ae 100644
--- a/avrdude/config.h
+++ b/avrdude/config.h
@@ -53,6 +53,10 @@ extern int          lineno;
 extern char       * infile;
 extern LISTID       string_list;
 extern LISTID       number_list;
+extern char         default_parallel[];
+extern char         default_serial[];
+
+
 
 #if !defined(HAS_YYSTYPE)
 #define YYSTYPE struct token_t *
diff --git a/avrdude/config_gram.y b/avrdude/config_gram.y
index 4ed73bd2..e06f3a1f 100644
--- a/avrdude/config_gram.y
+++ b/avrdude/config_gram.y
@@ -67,6 +67,8 @@ static int parse_cmdbits(OPCODE * op);
 %token K_BUFF
 %token K_CHIP_ERASE_DELAY
 %token K_DEDICATED
+%token K_DEFAULT_PARALLEL
+%token K_DEFAULT_SERIAL
 %token K_DESC
 %token K_DEVICECODE
 %token K_EEPROM
@@ -126,7 +128,20 @@ config :
 
 def :
   prog_def TKN_SEMI |
-  part_def TKN_SEMI
+
+  part_def TKN_SEMI |
+
+  K_DEFAULT_PARALLEL TKN_EQUAL TKN_STRING TKN_SEMI {
+    strncpy(default_parallel, $3->value.string, PATH_MAX);
+    default_parallel[PATH_MAX-1] = 0;
+    free_token($3);
+  } |
+
+  K_DEFAULT_SERIAL TKN_EQUAL TKN_STRING TKN_SEMI {
+    strncpy(default_serial, $3->value.string, PATH_MAX);
+    default_serial[PATH_MAX-1] = 0;
+    free_token($3);
+  }
 ;
 
 
diff --git a/avrdude/lexer.l b/avrdude/lexer.l
index c9f2d91d..26440d70 100644
--- a/avrdude/lexer.l
+++ b/avrdude/lexer.l
@@ -121,6 +121,8 @@ bs2              { yylval=NULL; return K_BS2; }
 buff             { yylval=NULL; return K_BUFF; }
 chip_erase_delay { yylval=NULL; return K_CHIP_ERASE_DELAY; }
 desc             { yylval=NULL; return K_DESC; }
+default_parallel { yylval=NULL; return K_DEFAULT_PARALLEL; }
+default_serial   { yylval=NULL; return K_DEFAULT_SERIAL; }
 devicecode       { yylval=NULL; return K_DEVICECODE; }
 eeprom           { yylval=NULL; return K_EEPROM; }
 errled           { yylval=NULL; return K_ERRLED; }
diff --git a/avrdude/main.c b/avrdude/main.c
index fb132e7b..f10a9257 100644
--- a/avrdude/main.c
+++ b/avrdude/main.c
@@ -86,9 +86,6 @@
 #include "term.h"
 
 
-#define DEFAULT_PARALLEL "/dev/ppi0"
-#define DEFAULT_SERIAL   "/dev/cuaa0"
-
 char * version      = "3.1.0";
 
 int    verbose;     /* verbose output */
@@ -308,11 +305,14 @@ int main(int argc, char * argv [])
   else
     progname = argv[0];
 
+  default_parallel[0] = 0;
+  default_serial[0]   = 0;
+
   init_config();
 
   partdesc      = NULL;
   readorwrite   = 0;
-  port          = DEFAULT_PARALLEL;
+  port          = default_parallel;
   outputf       = NULL;
   inputf        = NULL;
   doread        = 1;
@@ -381,8 +381,8 @@ int main(int argc, char * argv [])
       case 'c': /* pin configuration */
         pinconfig = optarg;
         if (strcmp(pinconfig, "stk500") == 0) {
-          if (port == DEFAULT_PARALLEL) {
-            port = DEFAULT_SERIAL;
+          if (port == default_parallel) {
+            port = default_serial;
           }
         }
         break;
@@ -613,6 +613,19 @@ int main(int argc, char * argv [])
   /*
    * open the programmer
    */
+  if (port[0] == 0) {
+    fprintf(stderr, "\n%s: no port has been specified on the command or the "
+            "config file\n", 
+            progname);
+    fprintf(stderr, "%sSpecify a port using the -P option and try again\n\n",
+            progbuf);
+    exit(1);
+  }
+
+  if (verbose) {
+    fprintf(stderr, "%sUsing Port            : %s\n", progbuf, port);
+  }
+
   pgm->open(pgm, port);
 
   if (verbose) {