STM32 RCC enable

stm32_rcc_enable.cpp

bool Rcc::enable(RccPeripheral peripheral) {
	uint8_t perNum = (uint8_t) peripheral;
	RccPeripheralHandle &ph = (*perHandlesStatic)[perNum];
	
	if (ph.exists == false) {
		return false;
	}
	
	// Check the current peripheral status.
	if (ph.count > 0) {
		if (ph.count >= handle_max) {
			return false;
		}
		
		// Increase handler count by one.
		ph.count++;
	}
	else {
		// Activate the peripheral.
		ph.count = 1;
		*(ph.enr) |= (1 << ph.enable);
	}
	
	return true;
}