SDI12Timing struct

Normative SDI-12 timing limits in microseconds.

These compile-time integral constants have no object storage. The transport, recorder, and sensor layers use the same limits when producing or validating traffic.

Public types

enum (anonymous): uint32_t { kGeneralToleranceMicros = 400UL, kBitWidthMicros = 833UL, kBreakMinMicros = 12000UL, kLineReleaseMaxMicros = 7500UL, kPreCharacterMarkingMinMicros = 8330UL, kResponseStartMaxMicros = 15000UL, kInterCharacterMarkingMaxMicros = 1660UL, kSensorWakeMaxMicros = 100000UL, kSensorStandbyMarkingMinMicros = 100000UL, kBreakRequiredAfterMarkingMicros = 87000UL, kNormalResponseMaxMicros = 380000UL, kRecorderDefaultTransactionTimeoutMillis = 3000UL, kRecorderSimpleTransactionTimeoutMillis = 5000UL, kRecorderDataTransactionTimeoutMillis = 12000UL, kRecorderRawResponseTimeoutMicros = 2000000UL, kHighVolumeDataResponseMaxMicros = 810400UL, kRecorderResponseStartMaxMicros = 17070UL, kNoResponseRetryMinMicros = 16670UL }

Enum documentation

enum SDI12Timing::(anonymous): uint32_t

Enumerators
kGeneralToleranceMicros	General timing tolerance, except where the specification disallows it.
kBitWidthMicros	The size of a bit in microseconds; 1200 baud = 1200 bits/second ~ 833.333 µs/bit
kBreakMinMicros	Minimum duration of a valid spacing break.
kLineReleaseMaxMicros	Maximum time in which a transmitter must relinquish the data line.
kPreCharacterMarkingMinMicros	Minimum marking before the first character of a command or response.
kResponseStartMaxMicros	Maximum time from command completion to the response start bit.
kInterCharacterMarkingMaxMicros	Maximum marking between the stop bit of one character and the start bit of the next character; no general tolerance applies.
kSensorWakeMaxMicros	Maximum time for a sensor to wake after detecting a break.
kSensorStandbyMarkingMinMicros	Marking duration after which a sensor must return to standby.
kBreakRequiredAfterMarkingMicros	Marking duration after which the next recorder command requires a break.
kNormalResponseMaxMicros	Maximum completion time for an ordinary ASCII response.
kRecorderDefaultTransactionTimeoutMillis	Conservative recorder transaction guard before command-derived deadlines.
kRecorderSimpleTransactionTimeoutMillis	Recorder deadline that permits all retries of an ordinary typed response.
kRecorderDataTransactionTimeoutMillis	Recorder deadline that permits all retries of one maximum-length data response.
kRecorderRawResponseTimeoutMicros	Conservative recorder response deadline for a raw extended command.
kHighVolumeDataResponseMaxMicros	Maximum transmission time for an extended ASCII data response with CRC.
kRecorderResponseStartMaxMicros	Recorder wait for observing the complete first response start bit.
kNoResponseRetryMinMicros	Earliest recorder retry after a command receives no response.