SAM-M10Q - Integration manual
with week numbers from 0 to 99 are interpreted as week numbers 3072 ... 3171 (calendar years
2038 ... 2040).
It is important to set the reference rollover week number correctly when supplying the
receiver with simulated signals, especially when the scenarios are in the past.
2.8 Time mark
The receiver can be used to provide an accurate measurement of the time at which a pulse was
detected on the external interrupt pin. The reference time can be chosen by setting the time source
parameter to UTC, GPS, GLONASS, BeiDou, Galileo or local time in the CFG-TP-* configuration group.
The UTC standard can be set in the CFG-NAVSPG-* configuration group. The delay figures defined
with CFG-TP-* are also applied to the results output in the UBX-TIM-TM2 message.
A UBX-TIM-TM2 message is output at the next epoch if
• The UBX-TIM-TM2 message is enabled, and
• a rising or falling edge was triggered since last epoch on the EXTINT pin.
The UBX-TIM-TM2 messages includes the time of the last time mark, new rising/falling edge
indicator, time source, validity, number of marks and an accuracy estimate.
Only the last rising and falling edge detected between two epochs is reported since the
output rate of the UBX-TIM-TM2 message corresponds to the measurement rate configured
with CFG-RATE-MEAS (see
UBX-22020019 - R01
2 Receiver functionality
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