From 8678e3edfd8f56b90d0847ba0a9a6ba615463152 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Sat, 21 Jan 2017 23:21:37 +1100
Subject: [PATCH] stmhal: Convert to use builtin help function.

---
 stmhal/Makefile       |  1 -
 stmhal/help.c         | 20 ++------------------
 stmhal/mpconfigport.h |  3 ++-
 3 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/stmhal/Makefile b/stmhal/Makefile
index f39818eb57..3735172dce 100644
--- a/stmhal/Makefile
+++ b/stmhal/Makefile
@@ -112,7 +112,6 @@ SRC_LIB = $(addprefix lib/,\
 	netutils/netutils.c \
 	timeutils/timeutils.c \
 	utils/pyexec.c \
-	utils/pyhelp.c \
 	)
 
 SRC_C = \
diff --git a/stmhal/help.c b/stmhal/help.c
index 21e81ebc0e..1d4803f750 100644
--- a/stmhal/help.c
+++ b/stmhal/help.c
@@ -24,11 +24,9 @@
  * THE SOFTWARE.
  */
 
-#include <stdio.h>
+#include "py/builtin.h"
 
-#include "lib/utils/pyhelp.h"
-
-STATIC const char *help_text =
+const char *stmhal_help_text =
 "Welcome to MicroPython!\n"
 "\n"
 "For online help please visit http://micropython.org/help/.\n"
@@ -70,17 +68,3 @@ STATIC const char *help_text =
 "\n"
 "For further help on a specific object, type help(obj)\n"
 ;
-
-STATIC mp_obj_t pyb_help(uint n_args, const mp_obj_t *args) {
-    if (n_args == 0) {
-        // print a general help message
-        printf("%s", help_text);
-
-    } else {
-        // try to print something sensible about the given object
-        pyhelp_print_obj(args[0]);
-    }
-
-    return mp_const_none;
-}
-MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_help_obj, 0, 1, pyb_help);
diff --git a/stmhal/mpconfigport.h b/stmhal/mpconfigport.h
index c9b5480c8b..100c38e4f6 100644
--- a/stmhal/mpconfigport.h
+++ b/stmhal/mpconfigport.h
@@ -76,6 +76,8 @@
 #define MICROPY_PY_BUILTINS_FROZENSET (1)
 #define MICROPY_PY_BUILTINS_EXECFILE (1)
 #define MICROPY_PY_BUILTINS_COMPILE (1)
+#define MICROPY_PY_BUILTINS_HELP    (1)
+#define MICROPY_PY_BUILTINS_HELP_TEXT stmhal_help_text
 #define MICROPY_PY_ALL_SPECIAL_METHODS (1)
 #define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
 #define MICROPY_PY_ARRAY_SLICE_ASSIGN (1)
@@ -130,7 +132,6 @@
 
 // extra built in names to add to the global namespace
 #define MICROPY_PORT_BUILTINS \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_help), (mp_obj_t)&mp_builtin_help_obj }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_input), (mp_obj_t)&mp_builtin_input_obj }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_open), (mp_obj_t)&mp_builtin_open_obj },