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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Mark_M
According to CASIC docs MSG-GPSEPH/MSG-GPSION/MSG-GPSUTC messages are "type cycle" (read-only). Is it possible to set that data using these messages? May be these are to dump a sort of backup?
It appears that EPO data is not standardized. Each vendor uses their format.
I am reading https://www.researchgate.net/publication/351855783_Partial_Decoding_of_the_GPS_Extended_Prediction_Orbit_File
Interesting article.