Microseconds since start

[Tony]

I am using the nRF54L15 and SDK 2.9.1 in VSCode.

I need to know the microseconds since start throughout my code.

I created this function:

inline unsigned long micros(void)
{
    double value = k_uptime_ticks();
    value /= ((double)CONFIG_SYS_CLOCK_TICKS_PER_SEC / (double)1000000);
    return (unsigned long)(value);
}

The problem is that CONFIG_SYS_CLOCK_TICKS_PER_SEC is defined as 31250. That means there are fewer ticks per second than a microsecond. I understand why this is, but how can I get microseconds on nRF54L15?