suovula

bool setClock(ClockScheme clock) {
	switch (clock) {
		case Internal2Mhz : {
			OSC.CTRL |= b00001;  								// Bit 0 – RC2MEN: 2MHz Internal Oscillator Enable
			while((OSC.STATUS & b00001) == 0) { }				// Wait oscillator to stabilize

			uint8_t psctrl = b00000 << 2 | b00 << 0;			// No System Clock prescalers, protected by CCP! 
			CCP = 0xD8; 										// Unlock Configuration Change Protection
			CLK.PSCTRL = psctrl;
			if (CLK.PSCTRL != psctrl) return false;				// Failed?