Unexpected behaviour of ensureEnabled within update

[PaulZC]

I'm writing a new example to test RTCM generation in Rover mode - specifically to test 1230 generation with v2.02 firmware

My loop() is simply:

void loop()
{
    myGNSS.update(); // Process bytes as they arrive from LG290P. Call rtcmCallback as needed
}

I have called myGNSS.rtcmSubscribeAll(rtcmCallback) to set up the callback for RTCM

update processes incoming RTCM and calls rtcmCallback as needed

update sets lg290PLibrarySemaphoreBlock true

In code below rtcmCallback, I want to use the GNSS time, which I get using myGNSS.getHour() etc.

getHour() ensures the PQTMPVT message is enabled by calling ensurePvtEnabled()

ensurePvtEnabled() calls ensureMsgEnabled to enable "PQTMPVT" if needed

ensureMsgEnabled calls setMessageRate

setMessageRate calls sendOkCommand to enable the PVT message

sendOkCommand calls sendCommand

sendCommand exits early because lg290PLibrarySemaphoreBlock is true because we are still inside update()

SparkFun_LG290P_GNSS_Arduino_Library/src/SparkFun_LG290P_GNSS.cpp

Lines 1085 to 1088 in 1e5db69

	bool LG290P::sendCommand(const char *command, const char *parms, uint16_t maxWaitMs, bool waitForResponse)
	{
	if (lg290PLibrarySemaphoreBlock)
	return false;

Long story short, PVT is never enabled and getHour etc. return zero

I'm still thinking about possible solutions...