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CODirRdByte

Description

This function reads a 8bit value from the given object directory. The object entry is addressed with the given key and the value will be written to the given destination pointer.

Prototype

CPU_INT16S CODirRdByte(CO_DIR *cod, CPU_INT32U key, CPU_INT08U *val);

ParameterDescription
cod pointer to the CANopen object directory
key object entry key; should be generated with the macro CO_DEV()
val pointer to the value destination

Returned Value

= CO_ERR.NONE   Successful operation

!= CO_ERR.NONE  An error is detected (see section "Error Identification")

Example

The following example reads the current value of the hypothetical application specific object entry "[1234:56]" within the object directory of the CANopen node AppNode.

Note: This function uses CODirFind() on each function call. To improve access performance for multiple accesses to a single object entry, the application may use CODirFind() once and COObjRdValue() multiple times.

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