| cyg_modbus_response_nocopy | ||
|---|---|---|
 | 110.2. Backend API |  |
Name
cyg_modbus_response_nocopy — Provide MODBUS response (no copy)
Synopsis
#include <cyg/modbus.h>
cyg_bool cyg_modbus_response_nocopy(cyg_handle_t ctx, cyg_uint8 len);
Description
Like the cyg_modbus_response() call this function
is used to provide the MODBUS server with a valid response to a
request handed to the backend for processing. This call assumes that
the original PDU buffer (as referenced through the
opaque ctx handle) contains the response data.
This “PDU buffer” re-use can simplify the backend processing, since it no longer needs to dynamically manage buffers that are handed-off to the main MODBUS server control.
Return value
Currently only ENOERR is returned.
| |  | |
| cyg_modbus_raw_pdu |  | cyg_modbus_response_exception |
| 2024-12-10 | eCosPro Non-Commercial Public License |