Parameter Storage

The parameter component provides an interface to the parameter group handling.

Module Context

classDiagram
  CO_NODE -- CO_PARA
  CO_NMT_RESET *-- CO_PARA : Type
  class CO_PARA {
    -uint32_t Size
    -uint8_t Start
    -uint8_t Default
    -uintptr_t Ident
    -uint32_t Value
    +COParaRestore(node)
    +COParaStore(node)
  }
  class CO_NMT_RESET {
    <<enumeration>>
  }

Structure Data

The class CO_PARA is defined within co_para.h and is responsible for storing and restoring the right CANopen parameter groups in dependency to the NMT reset type. The following data members are in this class:

Data Member	Type	Description
Default	uint8_t*	pointer to default parameter block
Ident	uintptr_t*	pointer to user identification code
Size	uint32_t	size of parameter memory block
Start	uint8_t*	pointer to parameter memory block
Type	CO_NMT_RESET	parameter group reset type
Value	uint32_t	value, when reading this parameter group

Member Functions

The following table describes the API functions of the CANopen parameter module. These functions are implemented within the source file: co_para.c/h

COParaRestore()

The changes in the NVM of the given parameter group will be replaced with the default values by calling the user callback function CO_ParaDefault().

Prototype

void COParaRestore(CO_PARA *pg, CO_NODE *node);

Arguments

Parameter	Description
pg	pointer to parameter group
node	pointer to parent node

Returned Value

• none

COParaStore()

The whole parameter group will be stored in NVM by calling the NVM driver function for writing data.

Prototype

void COParaStore(CO_PARA *pg, CO_NODE *node);

Arguments

Parameter	Description
pg	pointer to parameter group
node	pointer to parent node

Returned Value

• none