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8 Description: definitions for generating instances
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50 -------------------------------------------------------------------------
52 $RCSfile: EplInstDef.h,v $
56 $Revision: 1.4 $ $Date: 2008/04/17 21:36:32 $
63 -------------------------------------------------------------------------
67 r.d.: first implementation
69 ****************************************************************************/
71 #ifndef _EPLINSTDEF_H_
72 #define _EPLINSTDEF_H_
74 #include <linux/kernel.h>
76 // =========================================================================
77 // types and macros for generating instances
78 // =========================================================================
86 //------------------------------------------------------------------------------------------
88 typedef void *tEplPtrInstance;
89 typedef u8 tEplInstanceHdl;
91 // define const for illegale values
92 #define CCM_ILLINSTANCE NULL
93 #define CCM_ILLINSTANCE_HDL 0xFF
95 //------------------------------------------------------------------------------------------
96 // if more than one instance then use this macros
97 #if (EPL_MAX_INSTANCES > 1)
99 //--------------------------------------------------------------------------------------
100 // macro definition for instance table definition
101 //--------------------------------------------------------------------------------------
103 // memory attributes for instance table
104 #define STATIC // prevent warnings for variables with same name
106 #define INSTANCE_TYPE_BEGIN typedef struct {
107 #define INSTANCE_TYPE_END } tEplInstanceInfo;
109 //--------------------------------------------------------------------------------------
110 // macro definition for API interface
111 //--------------------------------------------------------------------------------------
115 // macros for declaration within function header or prototype of API functions
116 #define CCM_DECL_INSTANCE_HDL tEplInstanceHdl InstanceHandle
117 #define CCM_DECL_INSTANCE_HDL_ tEplInstanceHdl InstanceHandle,
119 // macros for declaration of pointer to instance handle within function header or prototype of API functions
120 #define CCM_DECL_PTR_INSTANCE_HDL tEplInstanceHdl *pInstanceHandle
121 #define CCM_DECL_PTR_INSTANCE_HDL_ tEplInstanceHdl *pInstanceHandle,
123 // macros for declaration instance as lokacl variable within functions
124 #define CCM_DECL_INSTANCE_PTR_LOCAL tCcmInstanceInfo *pInstance;
125 #define CCM_DECL_PTR_INSTANCE_HDL_LOCAL tEplInstanceHdl *pInstanceHandle;
129 // macros for reference of instance handle for function parameters
130 #define CCM_INSTANCE_HDL InstanceHandle
131 #define CCM_INSTANCE_HDL_ InstanceHandle,
133 // macros for reference of instance parameter for function parameters
134 #define CCM_INSTANCE_PARAM(par) par
135 #define CCM_INSTANCE_PARAM_(par) par,
137 // macros for reference of instance parameter for writing or reading values
138 #define CCM_INST_ENTRY (*((tEplPtrInstance)pInstance))
142 // macros for process instance handle
143 #define CCM_CHECK_INSTANCE_HDL() if (InstanceHandle >= EPL_MAX_INSTANCES) \
144 {return (kEplIllegalInstance);}
146 // macros for process pointer to instance handle
147 #define CCM_CHECK_PTR_INSTANCE_HDL() if (pInstanceHandle == NULL) \
148 {return (kEplInvalidInstanceParam);}
150 // This macro returned the handle and pointer to next free instance.
151 #define CCM_GET_FREE_INSTANCE_AND_HDL() pInstance = CcmGetFreeInstanceAndHandle (pInstanceHandle); \
152 ASSERT (*pInstanceHandle != CCM_ILLINSTANCE_HDL);
154 #define CCM_CHECK_INSTANCE_PTR() if (pInstance == CCM_ILLINSTANCE) \
155 {return (kEplNoFreeInstance);}
157 #define CCM_GET_INSTANCE_PTR() pInstance = CcmGetInstancePtr (InstanceHandle);
158 #define CCM_GET_FREE_INSTANCE_PTR() pInstance = GetFreeInstance (); \
159 ASSERT (pInstance != CCM_ILLINSTANCE);
161 //--------------------------------------------------------------------------------------
162 // macro definition for stack interface
163 //--------------------------------------------------------------------------------------
165 // macros for declaration within the function header, prototype or local var list
166 // Declaration of pointers within function paramater list must defined as void *
168 #define EPL_MCO_DECL_INSTANCE_PTR void *pInstance
169 #define EPL_MCO_DECL_INSTANCE_PTR_ void *pInstance,
170 #define EPL_MCO_DECL_INSTANCE_PTR_LOCAL tEplPtrInstance pInstance;
172 // macros for reference of pointer to instance
173 // These macros are used for parameter passing to called function.
174 #define EPL_MCO_INSTANCE_PTR pInstance
175 #define EPL_MCO_INSTANCE_PTR_ pInstance,
176 #define EPL_MCO_ADDR_INSTANCE_PTR_ &pInstance,
178 // macro for access of struct members of one instance
179 // An access to a member of instance table must be casted by the local
180 // defined type of instance table.
181 #define EPL_MCO_INST_ENTRY (*(tEplPtrInstance)pInstance)
182 #define EPL_MCO_GLB_VAR(var) (((tEplPtrInstance)pInstance)->var)
184 // macros for process pointer to instance
185 #define EPL_MCO_GET_INSTANCE_PTR() pInstance = (tEplPtrInstance) GetInstancePtr (InstanceHandle);
186 #define EPL_MCO_GET_FREE_INSTANCE_PTR() pInstance = (tEplPtrInstance) GetFreeInstance (); \
187 ASSERT (pInstance != CCM_ILLINSTANCE);
189 // This macro should be used to check the passed pointer to an public function
190 #define EPL_MCO_CHECK_INSTANCE_STATE() ASSERT (pInstance != NULL); \
191 ASSERT (((tEplPtrInstance)pInstance)->m_InstState == kStateUsed);
193 // macros for declaration of pointer to instance pointer
194 #define EPL_MCO_DECL_PTR_INSTANCE_PTR void **pInstancePtr
195 #define EPL_MCO_DECL_PTR_INSTANCE_PTR_ void **pInstancePtr,
197 // macros for reference of pointer to instance pointer
198 // These macros are used for parameter passing to called function.
199 #define EPL_MCO_PTR_INSTANCE_PTR pInstancePtr
200 #define EPL_MCO_PTR_INSTANCE_PTR_ pInstancePtr,
202 // macros for process pointer to instance pointer
203 #define EPL_MCO_CHECK_PTR_INSTANCE_PTR() ASSERT (pInstancePtr != NULL);
204 #define EPL_MCO_SET_PTR_INSTANCE_PTR() (*pInstancePtr = pInstance);
206 #define EPL_MCO_INSTANCE_PARAM(a) (a)
207 #define EPL_MCO_INSTANCE_PARAM_(a) (a),
208 #define EPL_MCO_INSTANCE_PARAM_IDX_() EPL_MCO_INSTANCE_PARAM_ (EPL_MCO_GLB_VAR (m_bInstIndex))
209 #define EPL_MCO_INSTANCE_PARAM_IDX() EPL_MCO_INSTANCE_PARAM (EPL_MCO_GLB_VAR (m_bInstIndex))
210 #define EPL_MCO_WRITE_INSTANCE_STATE(a) EPL_MCO_GLB_VAR (m_InstState) = a;
212 // this macro deletes all instance entries as unused
213 #define EPL_MCO_DELETE_INSTANCE_TABLE() \
215 tEplInstanceInfo * pInstance = &aEplInstanceTable_g[0]; \
216 tFastByte InstNumber = 0; \
217 tFastByte i = EPL_MAX_INSTANCES; \
219 pInstance->m_InstState = (u8) kStateUnused; \
220 pInstance->m_bInstIndex = (u8) InstNumber; \
221 pInstance++; InstNumber++; i--; \
225 // definition of functions which has to be defined in each module of CANopen stack
226 #define EPL_MCO_DEFINE_INSTANCE_FCT() \
227 static tEplPtrInstance GetInstancePtr (tEplInstanceHdl InstHandle_p); \
228 static tEplPtrInstance GetFreeInstance (void);
229 #define EPL_MCO_DECL_INSTANCE_FCT() \
230 static tEplPtrInstance GetInstancePtr (tEplInstanceHdl InstHandle_p) { \
231 return &aEplInstanceTable_g[InstHandle_p]; } \
232 static tEplPtrInstance GetFreeInstance (void) { \
233 tEplInstanceInfo *pInstance = &aEplInstanceTable_g[0]; \
234 tFastByte i = EPL_MAX_INSTANCES; \
235 do { if (pInstance->m_InstState != kStateUsed) { \
236 return (tEplPtrInstance) pInstance; } \
237 pInstance++; i--; } \
239 return CCM_ILLINSTANCE; }
241 // this macro defines the instance table. Each entry is reserved for an instance of CANopen.
242 #define EPL_MCO_DECL_INSTANCE_VAR() \
243 static tEplInstanceInfo aEplInstanceTable_g [EPL_MAX_INSTANCES];
245 // this macro defines member variables in instance table which are needed in
246 // all modules of Epl stack
247 #define EPL_MCO_DECL_INSTANCE_MEMBER() \
248 STATIC u8 m_InstState; \
249 STATIC u8 m_bInstIndex;
251 #define EPL_MCO_INSTANCE_PARAM_IDX_() EPL_MCO_INSTANCE_PARAM_ (EPL_MCO_GLB_VAR (m_bInstIndex))
252 #define EPL_MCO_INSTANCE_PARAM_IDX() EPL_MCO_INSTANCE_PARAM (EPL_MCO_GLB_VAR (m_bInstIndex))
254 #else // only one instance is used
256 // Memory attributes for instance table.
257 #define STATIC static // prevent warnings for variables with same name
259 #define INSTANCE_TYPE_BEGIN
260 #define INSTANCE_TYPE_END
262 // macros for declaration, initializing and member access for instance handle
263 // This class of macros are used by API function to inform CCM-modul which
264 // instance is to be used.
266 // macros for reference of instance handle
267 // These macros are used for parameter passing to CANopen API function.
268 #define CCM_INSTANCE_HDL
269 #define CCM_INSTANCE_HDL_
271 #define CCM_DECL_INSTANCE_PTR_LOCAL
273 // macros for declaration within the function header or prototype
274 #define CCM_DECL_INSTANCE_HDL void
275 #define CCM_DECL_INSTANCE_HDL_
277 // macros for process instance handle
278 #define CCM_CHECK_INSTANCE_HDL()
280 // macros for declaration of pointer to instance handle
281 #define CCM_DECL_PTR_INSTANCE_HDL void
282 #define CCM_DECL_PTR_INSTANCE_HDL_
284 // macros for process pointer to instance handle
285 #define CCM_CHECK_PTR_INSTANCE_HDL()
287 // This macro returned the handle and pointer to next free instance.
288 #define CCM_GET_FREE_INSTANCE_AND_HDL()
290 #define CCM_CHECK_INSTANCE_PTR()
292 #define CCM_GET_INSTANCE_PTR()
293 #define CCM_GET_FREE_INSTANCE_PTR()
295 #define CCM_INSTANCE_PARAM(par)
296 #define CCM_INSTANCE_PARAM_(par)
298 #define CCM_INST_ENTRY aCcmInstanceTable_g[0]
300 // macros for declaration, initializing and member access for instance pointer
301 // This class of macros are used by CANopen internal function to point to one instance.
303 // macros for declaration within the function header, prototype or local var list
304 #define EPL_MCO_DECL_INSTANCE_PTR void
305 #define EPL_MCO_DECL_INSTANCE_PTR_
306 #define EPL_MCO_DECL_INSTANCE_PTR_LOCAL
308 // macros for reference of pointer to instance
309 // These macros are used for parameter passing to called function.
310 #define EPL_MCO_INSTANCE_PTR
311 #define EPL_MCO_INSTANCE_PTR_
312 #define EPL_MCO_ADDR_INSTANCE_PTR_
314 // macros for process pointer to instance
315 #define EPL_MCO_GET_INSTANCE_PTR()
316 #define EPL_MCO_GET_FREE_INSTANCE_PTR()
318 // This macro should be used to check the passed pointer to an public function
319 #define EPL_MCO_CHECK_INSTANCE_STATE()
321 // macros for declaration of pointer to instance pointer
322 #define EPL_MCO_DECL_PTR_INSTANCE_PTR void
323 #define EPL_MCO_DECL_PTR_INSTANCE_PTR_
325 // macros for reference of pointer to instance pointer
326 // These macros are used for parameter passing to called function.
327 #define EPL_MCO_PTR_INSTANCE_PTR
328 #define EPL_MCO_PTR_INSTANCE_PTR_
330 // macros for process pointer to instance pointer
331 #define EPL_MCO_CHECK_PTR_INSTANCE_PTR()
332 #define EPL_MCO_SET_PTR_INSTANCE_PTR()
334 #define EPL_MCO_INSTANCE_PARAM(a)
335 #define EPL_MCO_INSTANCE_PARAM_(a)
336 #define EPL_MCO_INSTANCE_PARAM_IDX_()
337 #define EPL_MCO_INSTANCE_PARAM_IDX()
339 // macro for access of struct members of one instance
340 #define EPL_MCO_INST_ENTRY aEplInstanceTable_g[0]
341 #define EPL_MCO_GLB_VAR(var) (var)
342 #define EPL_MCO_WRITE_INSTANCE_STATE(a)
344 // this macro deletes all instance entries as unused
345 #define EPL_MCO_DELETE_INSTANCE_TABLE()
347 // definition of functions which has to be defined in each module of CANopen stack
348 #define EPL_MCO_DEFINE_INSTANCE_FCT()
349 #define EPL_MCO_DECL_INSTANCE_FCT()
351 // this macro defines the instance table. Each entry is reserved for an instance of CANopen.
352 #define EPL_MCO_DECL_INSTANCE_VAR()
354 // this macro defines member variables in instance table which are needed in
355 // all modules of CANopen stack
356 #define EPL_MCO_DECL_INSTANCE_MEMBER()
360 #endif // _EPLINSTDEF_H_
362 // Die letzte Zeile muß unbedingt eine leere Zeile sein, weil manche Compiler
363 // damit ein Problem haben, wenn das nicht so ist (z.B. GNU oder Borland C++ Builder).