CODirRdBuffer
Description
This function reads a buffer byte stream from the given object directory. The object entry is addressed with the given key and the bytes will be read from the given destination buffer of the given length.
Prototype
CPU_INT16S CODirRdBuffer(CO_DIR *cod,
CPU_INT32U key,
CPU_INT08U *buffer,
CPU_INT32U len);
| Parameter | Meaning |
|---|---|
| cod | pointer to the CANopen object directory |
| key | object entry key; should be generated with the macro CO_DEV() |
| buffer | pointer to the destination buffer |
| len | length of destination buffer |
Returned Value
= CO_ERR.NONE Successful operation
!= CO_ERR.NONE An error is detected (see section "Error Identification")
Example
The following example writes the value to the hypothetical application specific object entry "[1234:56]" within the object directory of the CANopen node AppNode.