One FMMU's configuration as programmed on a slave's ESC. More...

#include <fieldbus_driver.h>

Public Attributes
uint8_t	index = 0
	FMMU number (0..3).

uint32_t	logicalStart = 0
	Logical (bus-wide) start address.

uint16_t	length = 0
	Mapped length in bytes.

uint8_t	logicalStartBit = 0
	Start bit within the first logical byte.

uint8_t	logicalEndBit = 0
	End bit within the last logical byte.

uint16_t	physicalStart = 0
	Physical ESC start address (ties the FMMU to a Sync Manager).

uint8_t	physicalStartBit = 0
	Start bit within the first physical byte.

uint8_t	type = 0
	ESC FMMU type: 1=read (inputs/TxPDO), 2=write (outputs/RxPDO).

uint8_t	active = 0
	Non-zero when the FMMU is active.

Detailed Description

One FMMU's configuration as programmed on a slave's ESC.

A Fieldbus Memory Management Unit maps a span of the bus-wide logical address space onto a window of the slave's physical memory (typically the process-data Sync Manager), translating the master's logical reads/writes into local accesses.

Member Data Documentation

◆ active

uint8_t mm::comm::FmmuConfig::active = 0

Non-zero when the FMMU is active.

◆ index

uint8_t mm::comm::FmmuConfig::index = 0

FMMU number (0..3).

◆ length

uint16_t mm::comm::FmmuConfig::length = 0

Mapped length in bytes.

◆ logicalEndBit

uint8_t mm::comm::FmmuConfig::logicalEndBit = 0

End bit within the last logical byte.

◆ logicalStart

uint32_t mm::comm::FmmuConfig::logicalStart = 0

Logical (bus-wide) start address.

◆ logicalStartBit

uint8_t mm::comm::FmmuConfig::logicalStartBit = 0

Start bit within the first logical byte.

◆ physicalStart

uint16_t mm::comm::FmmuConfig::physicalStart = 0

Physical ESC start address (ties the FMMU to a Sync Manager).

◆ physicalStartBit

uint8_t mm::comm::FmmuConfig::physicalStartBit = 0

Start bit within the first physical byte.

◆ type

uint8_t mm::comm::FmmuConfig::type = 0

ESC FMMU type: 1=read (inputs/TxPDO), 2=write (outputs/RxPDO).

The documentation for this struct was generated from the following file:

libs/comm/fieldbus_driver.h

Public Attributes