* making pio_calculate_clkdiv8_from_float round to the neareset 1/256 (not lower 1/256)
* chage rounding of all float clkdivs to round to neareset; default to nearest (which is a backwards incompatible change, but I think OK), and add ability to turn it off
* fix copy/paste errors in PICO_CONFIG
* Calculate size of FRAC field using its own MSB and LSB, rather than hoping that INT_LSB is in the right place
* Add a new REG_FIELD_WIDTH macro, and make the calculation of the clock-dividers more consistent
---------
Co-authored-by: Andrew Scheller <andrew.scheller@raspberrypi.com>
* Update config-extraction scripts to work with multiple chips
* Standardise wording between common options
* Various config-related fixes
* Update pico_rand to use correct busctrl_hw struct-name
* Don't start config descriptions with "The ..."
* Allow pre-processor overrides for Clock/PLL setup
* Use `_KHZ` rather than `_MHZ` for `XOSC_` `SYS_CLOCK_` etc definitions (`_MHZ` versions are provided for compatibility when `_KHZ` is a multiple of 1000)
Co-authored-by: graham sanderson <graham.sanderson@raspberrypi.com>
* Add documentation for gpio_irq_callback_t and rtc_callback_t (fixes#175)
* Hook up pico_binary_info and pico_bootsel_via_double_reset to the Doxygen index
* Add link to new Raspberry Pi Pico FAQ
* Consistently add parentheses for \sa or \see links to function-names
* Use consistent capitalisation for 'GitHub'
* Small typos and markup errors
In C, func() is a function taking an unspecified number of arguments,
vs func(void) a function taking no arguments. In C++ both forms indicate
"no arguments."
Update these headers to use the (void) form, which is correct in both
languages and avoids complaints when -Wstrict-prototypes is specified.
