foe_error.h File Reference

#include <cstdint>
#include <format>
#include <ostream>
#include <string>
#include <string_view>

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Classes
struct	mm::comm::FoeError
	A structured FoE failure. String-like where a caller only forwards it (operator<<, .message, what()); branchable where a caller must react (kind, retry). More...

Namespaces
namespace	mm
namespace	mm::comm

Enumerations
enum class	mm::comm::Retry { mm::comm::Transient , mm::comm::Permanent }
	Retry disposition of a failed operation: whether re-issuing the identical call could plausibly succeed. This is the one axis callers branch on uniformly — a firmware flasher retries Transient failures and aborts on Permanent ones — so it rides alongside the FoE-specific kind rather than being folded into it. More...
enum class	mm::comm::FoeErrorKind {   mm::comm::NoResponse , mm::comm::FileNotFound , mm::comm::BufferTooSmall , mm::comm::PacketMismatch ,   mm::comm::Protocol }
	Specific File-over-EtherCAT failure kind. Transport-agnostic: the SOEM driver decodes it from the error code of the slave's FoE Error packet, or from a negated ec_err_type when the slave sent none. The SPoE driver decodes it from its own protocol codes. More...

Functions
std::string_view	mm::comm::foeReason (FoeErrorKind kind)
	Short human-readable reason for a FoE kind (no surrounding punctuation).
Retry	mm::comm::foeRetry (FoeErrorKind kind)
	Retry disposition implied by a FoE kind. A missing file or an undersized buffer is a fixed condition that will recur identically; a desync or a not-yet-ready slave (the BOOT bootloader warm-up path) is worth another attempt.
std::ostream &	mm::comm::operator<< (std::ostream &os, const FoeError &e)
	Streams the message, so ASSERT_TRUE(r) << r.error() and spdlog {} work unchanged.
FoeError	mm::comm::makeFoeError (FoeErrorKind kind, std::string_view op, uint16_t slave, std::string_view filename)
	Builds a fully-formed FoeError from a decoded kind plus call context. Keeps the message wording identical to the pre-promotion string ("<op> slave N '<file>' failed (<reason>)") so nothing downstream that logs or displays it changes shape.
FoeError	mm::comm::makeFoeRefusal (uint32_t code, std::string_view text, std::string_view op, uint16_t slave, std::string_view filename)
	Builds the FoeError for a transfer the slave refused with an FoE Error packet, naming the code as an SDO failure names its abort code: "(FoE error 0x8001: Not found)".