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G.FIT User Guide and Specification, Rev 2.0_Alpha.14
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4.5
Custom events
G.FIT allows bidirectional custom message exchange between the fitness equipment and display over both
ANT+ (through manufacturer specific pages, section 6.2) and BLE (through the G.FIT Custom Service, section
0).
Custom events can be used to transfer manufacturer specific information between the two devices. Custom
events are transmitted over the same channel as FE data; care must be taken to not starve the FE data
stream by sending manufacturer specific updates too frequently.
To send custom events, use the gfit_fep_send_custom_event message described in section 0.