Matthew Sims / mbed

Lab 1 Program C

Dependents:   Lab1C

Fork of mbed by -deleted-

Base.h@11:1c1ebd0324fa, 2009-08-28 (annotated)

Committer:
rolf.meyer@arm.com
Date:
Fri Aug 28 12:10:11 2009 +0000
Revision:
11:1c1ebd0324fa
Parent:
8:00a04e5cd407
Child:
27:7110ebee3484
A shiny new version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon.ford@mbed.co.uk 0:82220227f4fa 1 /* mbed Microcontroller Library - Base
simon.ford@mbed.co.uk 4:5d1359a283bc 2 * Copyright (c) 2006-2008 ARM Limited. All rights reserved.
simon.ford@mbed.co.uk 4:5d1359a283bc 3 * sford, jbrawn
simon.ford@mbed.co.uk 0:82220227f4fa 4 */
simon.ford@mbed.co.uk 4:5d1359a283bc 5
simon.ford@mbed.co.uk 0:82220227f4fa 6 #ifndef MBED_BASE_H
simon.ford@mbed.co.uk 0:82220227f4fa 7 #define MBED_BASE_H
simon.ford@mbed.co.uk 0:82220227f4fa 8
rolf.meyer@arm.com 11:1c1ebd0324fa 9 #include "platform.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 10 #include "PinNames.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 11 #include "PeripheralNames.h"
simon.ford@mbed.co.uk 4:5d1359a283bc 12 #include <cstdlib>
simon.ford@mbed.co.uk 8:00a04e5cd407 13 #include "DirHandle.h"
simon.ford@mbed.co.uk 0:82220227f4fa 14
simon.ford@mbed.co.uk 0:82220227f4fa 15 namespace mbed {
simon.ford@mbed.co.uk 0:82220227f4fa 16
rolf.meyer@arm.com 11:1c1ebd0324fa 17 #ifdef MBED_RPC
simon.ford@mbed.co.uk 5:62573be585e9 18 struct rpc_function {
simon.ford@mbed.co.uk 5:62573be585e9 19 const char *name;
simon.ford@mbed.co.uk 5:62573be585e9 20 void (*caller)(const char*, char*);
simon.ford@mbed.co.uk 5:62573be585e9 21 };
simon.ford@mbed.co.uk 5:62573be585e9 22
simon.ford@mbed.co.uk 5:62573be585e9 23 struct rpc_class {
simon.ford@mbed.co.uk 5:62573be585e9 24 const char *name;
simon.ford@mbed.co.uk 5:62573be585e9 25 const rpc_function *static_functions;
simon.ford@mbed.co.uk 5:62573be585e9 26 struct rpc_class *next;
simon.ford@mbed.co.uk 5:62573be585e9 27 };
rolf.meyer@arm.com 11:1c1ebd0324fa 28 #endif
simon.ford@mbed.co.uk 5:62573be585e9 29
simon.ford@mbed.co.uk 4:5d1359a283bc 30 /* Class Base
simon.ford@mbed.co.uk 4:5d1359a283bc 31 * The base class for most things
simon.ford@mbed.co.uk 4:5d1359a283bc 32 */
simon.ford@mbed.co.uk 0:82220227f4fa 33 class Base {
simon.ford@mbed.co.uk 0:82220227f4fa 34
simon.ford@mbed.co.uk 0:82220227f4fa 35 public:
simon.ford@mbed.co.uk 4:5d1359a283bc 36
simon.ford@mbed.co.uk 4:5d1359a283bc 37 Base(const char *name = NULL);
simon.ford@mbed.co.uk 0:82220227f4fa 38
simon.ford@mbed.co.uk 4:5d1359a283bc 39 virtual ~Base();
simon.ford@mbed.co.uk 4:5d1359a283bc 40
simon.ford@mbed.co.uk 4:5d1359a283bc 41 /* Function register_object
simon.ford@mbed.co.uk 4:5d1359a283bc 42 * Registers this object with the given name, so that it can be
simon.ford@mbed.co.uk 4:5d1359a283bc 43 * looked up with lookup. If this object has already been
simon.ford@mbed.co.uk 4:5d1359a283bc 44 * registered, then this just changes the name.
simon.ford@mbed.co.uk 4:5d1359a283bc 45 *
simon.ford@mbed.co.uk 4:5d1359a283bc 46 * Variables
simon.ford@mbed.co.uk 4:5d1359a283bc 47 * name - The name to give the object. If NULL we do nothing.
simon.ford@mbed.co.uk 4:5d1359a283bc 48 */
simon.ford@mbed.co.uk 4:5d1359a283bc 49 void register_object(const char *name);
simon.ford@mbed.co.uk 4:5d1359a283bc 50
simon.ford@mbed.co.uk 4:5d1359a283bc 51 /* Function name
simon.ford@mbed.co.uk 4:5d1359a283bc 52 * Returns the name of the object, or NULL if it has no name.
simon.ford@mbed.co.uk 4:5d1359a283bc 53 */
simon.ford@mbed.co.uk 4:5d1359a283bc 54 const char *name();
simon.ford@mbed.co.uk 4:5d1359a283bc 55
rolf.meyer@arm.com 11:1c1ebd0324fa 56 #ifdef MBED_RPC
rolf.meyer@arm.com 11:1c1ebd0324fa 57
simon.ford@mbed.co.uk 4:5d1359a283bc 58 /* Function rpc
simon.ford@mbed.co.uk 4:5d1359a283bc 59 * Call the given method with the given arguments, and write the
simon.ford@mbed.co.uk 4:5d1359a283bc 60 * result into the string pointed to by result. The default
simon.ford@mbed.co.uk 4:5d1359a283bc 61 * implementation calls rpc_methods to determine the supported
simon.ford@mbed.co.uk 4:5d1359a283bc 62 * methods.
simon.ford@mbed.co.uk 4:5d1359a283bc 63 *
simon.ford@mbed.co.uk 4:5d1359a283bc 64 * Variables
simon.ford@mbed.co.uk 4:5d1359a283bc 65 * method - The name of the method to call.
simon.ford@mbed.co.uk 4:5d1359a283bc 66 * arguments - A list of arguments separated by spaces.
simon.ford@mbed.co.uk 4:5d1359a283bc 67 * result - A pointer to a string to write the result into. May
simon.ford@mbed.co.uk 4:5d1359a283bc 68 * be NULL, in which case nothing is written.
rolf.meyer@arm.com 11:1c1ebd0324fa 69 *
rolf.meyer@arm.com 11:1c1ebd0324fa 70 * Returns
rolf.meyer@arm.com 11:1c1ebd0324fa 71 * true if method corresponds to a valid rpc method, or
simon.ford@mbed.co.uk 4:5d1359a283bc 72 * false otherwise.
simon.ford@mbed.co.uk 4:5d1359a283bc 73 */
simon.ford@mbed.co.uk 4:5d1359a283bc 74 virtual bool rpc(const char *method, const char *arguments, char *result);
simon.ford@mbed.co.uk 0:82220227f4fa 75
simon.ford@mbed.co.uk 5:62573be585e9 76 /* Function get_rpc_methods
simon.ford@mbed.co.uk 4:5d1359a283bc 77 * Returns a pointer to an array describing the rpc methods
simon.ford@mbed.co.uk 5:62573be585e9 78 * supported by this object, terminated by either
simon.ford@mbed.co.uk 5:62573be585e9 79 * RPC_METHOD_END or RPC_METHOD_SUPER(Superclass).
simon.ford@mbed.co.uk 4:5d1359a283bc 80 *
simon.ford@mbed.co.uk 4:5d1359a283bc 81 * Example
simon.ford@mbed.co.uk 4:5d1359a283bc 82 * > class Example : public Base {
simon.ford@mbed.co.uk 4:5d1359a283bc 83 * > int foo(int a, int b) { return a + b; }
simon.ford@mbed.co.uk 5:62573be585e9 84 * > virtual const struct rpc_method *get_rpc_methods() {
simon.ford@mbed.co.uk 4:5d1359a283bc 85 * > static const rpc_method rpc_methods[] = {
simon.ford@mbed.co.uk 4:5d1359a283bc 86 * > { "foo", generic_caller<int, Example, int, int, &Example::foo> },
simon.ford@mbed.co.uk 5:62573be585e9 87 * > RPC_METHOD_SUPER(Base)
simon.ford@mbed.co.uk 4:5d1359a283bc 88 * > };
simon.ford@mbed.co.uk 4:5d1359a283bc 89 * > return rpc_methods;
simon.ford@mbed.co.uk 4:5d1359a283bc 90 * > }
simon.ford@mbed.co.uk 4:5d1359a283bc 91 * > };
simon.ford@mbed.co.uk 4:5d1359a283bc 92 */
simon.ford@mbed.co.uk 5:62573be585e9 93 virtual const struct rpc_method *get_rpc_methods();
simon.ford@mbed.co.uk 5:62573be585e9 94
simon.ford@mbed.co.uk 4:5d1359a283bc 95 /* Function rpc
simon.ford@mbed.co.uk 4:5d1359a283bc 96 * Use the lookup function to lookup an object and, if
simon.ford@mbed.co.uk 4:5d1359a283bc 97 * successful, call its rpc method
simon.ford@mbed.co.uk 4:5d1359a283bc 98 *
simon.ford@mbed.co.uk 4:5d1359a283bc 99 * Variables
simon.ford@mbed.co.uk 4:5d1359a283bc 100 * returns - false if name does not correspond to an object,
simon.ford@mbed.co.uk 4:5d1359a283bc 101 * otherwise the return value of the call to the object's rpc
simon.ford@mbed.co.uk 4:5d1359a283bc 102 * method.
simon.ford@mbed.co.uk 4:5d1359a283bc 103 */
simon.ford@mbed.co.uk 4:5d1359a283bc 104 static bool rpc(const char *name, const char *method, const char *arguments, char *result);
simon.ford@mbed.co.uk 4:5d1359a283bc 105
rolf.meyer@arm.com 11:1c1ebd0324fa 106 #endif
rolf.meyer@arm.com 11:1c1ebd0324fa 107
simon.ford@mbed.co.uk 4:5d1359a283bc 108 /* Function lookup
simon.ford@mbed.co.uk 4:5d1359a283bc 109 * Lookup and return the object that has the given name.
simon.ford@mbed.co.uk 4:5d1359a283bc 110 *
simon.ford@mbed.co.uk 4:5d1359a283bc 111 * Variables
simon.ford@mbed.co.uk 4:5d1359a283bc 112 * name - the name to lookup.
simon.ford@mbed.co.uk 4:5d1359a283bc 113 * len - the length of name.
simon.ford@mbed.co.uk 4:5d1359a283bc 114 */
simon.ford@mbed.co.uk 4:5d1359a283bc 115 static Base *lookup(const char *name, unsigned int len);
simon.ford@mbed.co.uk 0:82220227f4fa 116
simon.ford@mbed.co.uk 8:00a04e5cd407 117 static DirHandle *opendir();
simon.ford@mbed.co.uk 8:00a04e5cd407 118 friend class BaseDirHandle;
simon.ford@mbed.co.uk 8:00a04e5cd407 119
simon.ford@mbed.co.uk 0:82220227f4fa 120 protected:
simon.ford@mbed.co.uk 0:82220227f4fa 121
simon.ford@mbed.co.uk 4:5d1359a283bc 122 static Base *_head;
simon.ford@mbed.co.uk 4:5d1359a283bc 123 Base *_next;
simon.ford@mbed.co.uk 4:5d1359a283bc 124 const char *_name;
simon.ford@mbed.co.uk 5:62573be585e9 125 bool _from_construct;
simon.ford@mbed.co.uk 5:62573be585e9 126
simon.ford@mbed.co.uk 5:62573be585e9 127 private:
simon.ford@mbed.co.uk 5:62573be585e9 128
rolf.meyer@arm.com 11:1c1ebd0324fa 129 #ifdef MBED_RPC
simon.ford@mbed.co.uk 5:62573be585e9 130 static rpc_class *_classes;
simon.ford@mbed.co.uk 5:62573be585e9 131
simon.ford@mbed.co.uk 7:15d74db76485 132 static const rpc_function _base_funcs[];
simon.ford@mbed.co.uk 7:15d74db76485 133 static rpc_class _base_class;
rolf.meyer@arm.com 11:1c1ebd0324fa 134 #endif
simon.ford@mbed.co.uk 7:15d74db76485 135
simon.ford@mbed.co.uk 5:62573be585e9 136 void delete_self();
simon.ford@mbed.co.uk 5:62573be585e9 137 static void list_objs(const char *arguments, char *result);
simon.ford@mbed.co.uk 5:62573be585e9 138 static void clear(const char*,char*);
simon.ford@mbed.co.uk 5:62573be585e9 139
simon.ford@mbed.co.uk 5:62573be585e9 140 static char *new_name(Base *p);
simon.ford@mbed.co.uk 5:62573be585e9 141
simon.ford@mbed.co.uk 5:62573be585e9 142 public:
simon.ford@mbed.co.uk 5:62573be585e9 143
rolf.meyer@arm.com 11:1c1ebd0324fa 144 #ifdef MBED_RPC
simon.ford@mbed.co.uk 5:62573be585e9 145 /* Function add_rpc_class
simon.ford@mbed.co.uk 5:62573be585e9 146 * Add the class to the list of classes which can have static
simon.ford@mbed.co.uk 5:62573be585e9 147 * methods called via rpc (the static methods which can be called
simon.ford@mbed.co.uk 5:62573be585e9 148 * are defined by that class' get_rpc_class() static method).
simon.ford@mbed.co.uk 5:62573be585e9 149 */
simon.ford@mbed.co.uk 5:62573be585e9 150 template<class C>
simon.ford@mbed.co.uk 5:62573be585e9 151 static void add_rpc_class() {
simon.ford@mbed.co.uk 5:62573be585e9 152 rpc_class *c = C::get_rpc_class();
simon.ford@mbed.co.uk 5:62573be585e9 153 c->next = _classes;
simon.ford@mbed.co.uk 5:62573be585e9 154 _classes = c;
simon.ford@mbed.co.uk 5:62573be585e9 155 }
simon.ford@mbed.co.uk 5:62573be585e9 156
simon.ford@mbed.co.uk 5:62573be585e9 157 template<class C>
simon.ford@mbed.co.uk 5:62573be585e9 158 static const char *construct() {
simon.ford@mbed.co.uk 5:62573be585e9 159 Base *p = new C();
simon.ford@mbed.co.uk 5:62573be585e9 160 p->_from_construct = true;
simon.ford@mbed.co.uk 5:62573be585e9 161 if(p->_name==NULL) {
simon.ford@mbed.co.uk 5:62573be585e9 162 p->register_object(new_name(p));
simon.ford@mbed.co.uk 5:62573be585e9 163 }
simon.ford@mbed.co.uk 5:62573be585e9 164 return p->_name;
simon.ford@mbed.co.uk 5:62573be585e9 165 }
simon.ford@mbed.co.uk 5:62573be585e9 166
simon.ford@mbed.co.uk 5:62573be585e9 167 template<class C, typename A1>
simon.ford@mbed.co.uk 5:62573be585e9 168 static const char *construct(A1 arg1) {
simon.ford@mbed.co.uk 5:62573be585e9 169 Base *p = new C(arg1);
simon.ford@mbed.co.uk 5:62573be585e9 170 p->_from_construct = true;
simon.ford@mbed.co.uk 5:62573be585e9 171 if(p->_name==NULL) {
simon.ford@mbed.co.uk 5:62573be585e9 172 p->register_object(new_name(p));
simon.ford@mbed.co.uk 5:62573be585e9 173 }
simon.ford@mbed.co.uk 5:62573be585e9 174 return p->_name;
simon.ford@mbed.co.uk 5:62573be585e9 175 }
simon.ford@mbed.co.uk 5:62573be585e9 176
simon.ford@mbed.co.uk 5:62573be585e9 177 template<class C, typename A1, typename A2>
simon.ford@mbed.co.uk 5:62573be585e9 178 static const char *construct(A1 arg1, A2 arg2) {
simon.ford@mbed.co.uk 5:62573be585e9 179 Base *p = new C(arg1,arg2);
simon.ford@mbed.co.uk 5:62573be585e9 180 p->_from_construct = true;
simon.ford@mbed.co.uk 5:62573be585e9 181 if(p->_name==NULL) {
simon.ford@mbed.co.uk 5:62573be585e9 182 p->register_object(new_name(p));
simon.ford@mbed.co.uk 5:62573be585e9 183 }
simon.ford@mbed.co.uk 5:62573be585e9 184 return p->_name;
simon.ford@mbed.co.uk 5:62573be585e9 185 }
simon.ford@mbed.co.uk 5:62573be585e9 186
simon.ford@mbed.co.uk 5:62573be585e9 187 template<class C, typename A1, typename A2, typename A3>
simon.ford@mbed.co.uk 5:62573be585e9 188 static const char *construct(A1 arg1, A2 arg2, A3 arg3) {
simon.ford@mbed.co.uk 5:62573be585e9 189 Base *p = new C(arg1,arg2,arg3);
simon.ford@mbed.co.uk 5:62573be585e9 190 p->_from_construct = true;
simon.ford@mbed.co.uk 5:62573be585e9 191 if(p->_name==NULL) {
simon.ford@mbed.co.uk 5:62573be585e9 192 p->register_object(new_name(p));
simon.ford@mbed.co.uk 5:62573be585e9 193 }
simon.ford@mbed.co.uk 5:62573be585e9 194 return p->_name;
simon.ford@mbed.co.uk 5:62573be585e9 195 }
simon.ford@mbed.co.uk 5:62573be585e9 196
simon.ford@mbed.co.uk 5:62573be585e9 197 template<class C, typename A1, typename A2, typename A3, typename A4>
simon.ford@mbed.co.uk 5:62573be585e9 198 static const char *construct(A1 arg1, A2 arg2, A3 arg3, A4 arg4) {
simon.ford@mbed.co.uk 5:62573be585e9 199 Base *p = new C(arg1,arg2,arg3,arg4);
simon.ford@mbed.co.uk 5:62573be585e9 200 p->_from_construct = true;
simon.ford@mbed.co.uk 5:62573be585e9 201 if(p->_name==NULL) {
simon.ford@mbed.co.uk 5:62573be585e9 202 p->register_object(new_name(p));
simon.ford@mbed.co.uk 5:62573be585e9 203 }
simon.ford@mbed.co.uk 5:62573be585e9 204 return p->_name;
simon.ford@mbed.co.uk 5:62573be585e9 205 }
rolf.meyer@arm.com 11:1c1ebd0324fa 206 #endif
simon.ford@mbed.co.uk 4:5d1359a283bc 207
simon.ford@mbed.co.uk 0:82220227f4fa 208 };
simon.ford@mbed.co.uk 0:82220227f4fa 209
simon.ford@mbed.co.uk 4:5d1359a283bc 210 /* Macro MBED_OBJECT_NAME_MAX
simon.ford@mbed.co.uk 4:5d1359a283bc 211 * The maximum size of object name (including terminating null byte)
simon.ford@mbed.co.uk 4:5d1359a283bc 212 * that will be recognised when using fopen to open a FileLike
simon.ford@mbed.co.uk 4:5d1359a283bc 213 * object, or when using the rpc function.
simon.ford@mbed.co.uk 4:5d1359a283bc 214 */
simon.ford@mbed.co.uk 4:5d1359a283bc 215 #define MBED_OBJECT_NAME_MAX 32
simon.ford@mbed.co.uk 4:5d1359a283bc 216
simon.ford@mbed.co.uk 4:5d1359a283bc 217 /* Macro MBED_METHOD_NAME_MAX
simon.ford@mbed.co.uk 4:5d1359a283bc 218 * The maximum size of rpc method name (including terminating null
simon.ford@mbed.co.uk 4:5d1359a283bc 219 * byte) that will be recognised by the rpc function (in rpc.h).
simon.ford@mbed.co.uk 4:5d1359a283bc 220 */
simon.ford@mbed.co.uk 4:5d1359a283bc 221 #define MBED_METHOD_NAME_MAX 32
simon.ford@mbed.co.uk 4:5d1359a283bc 222
simon.ford@mbed.co.uk 0:82220227f4fa 223 } // namespace mbed
simon.ford@mbed.co.uk 0:82220227f4fa 224
simon.ford@mbed.co.uk 1:6b7f447ca868 225 #endif
simon.ford@mbed.co.uk 1:6b7f447ca868 226