Romi32U4.h File Reference

Main header file for the Romi32U4 library. More...

#include <FastGPIO.h>
#include <Romi32U4Buttons.h>
#include <Romi32U4Buzzer.h>
#include <Romi32U4Encoders.h>
#include <Romi32U4LCD.h>
#include <Romi32U4Motors.h>

Go to the source code of this file.

Functions
void	ledRed (bool on)
	Turns the red user LED (RX) on or off. More...
void	ledYellow (bool on)
	Turns the yellow user LED on pin 13 on or off. More...
void	ledGreen (bool on)
	Turns the green user LED (TX) on or off. More...
bool	usbPowerPresent ()
	Returns true if USB power is detected. More...
uint16_t	readBatteryMillivolts ()
	Reads the battery voltage and returns it in millivolts. More...

Detailed Description

Main header file for the Romi32U4 library.

This file includes all the other headers files provided by the library.

Definition in file Romi32U4.h.

Function Documentation

ledGreen()

void ledGreen ( bool  on )

inline

Turns the green user LED (TX) on or off.

Parameters

on	1 to turn on the LED, 0 to turn it off.

The green user LED is pin PD5, which is also known as TXLED. The Arduino core code uses this LED to indicate when it receives data over USB, so it might be hard to control this LED when USB is connected.

Definition at line 52 of file Romi32U4.h.

ledRed()

void ledRed ( bool  on )

inline

Turns the red user LED (RX) on or off.

Parameters

on	1 to turn on the LED, 0 to turn it off.

The red user LED is on pin 17, which is also known as PB0, SS, and RXLED. The Arduino core code uses this LED to indicate when it receives data over USB, so it might be hard to control this LED when USB is connected.

Definition at line 32 of file Romi32U4.h.

ledYellow()

void ledYellow ( bool  on )

inline

Turns the yellow user LED on pin 13 on or off.

Parameters

on	1 to turn on the LED, 0 to turn it off.

Definition at line 40 of file Romi32U4.h.

readBatteryMillivolts()

uint16_t readBatteryMillivolts ( )

inline

Reads the battery voltage and returns it in millivolts.

If this function returns a number below 5500, the actual battery voltage might be significantly lower than the value returned.

Definition at line 74 of file Romi32U4.h.

usbPowerPresent()

bool usbPowerPresent ( )

inline

Returns true if USB power is detected.

This function returns true if power is detected on the board's USB port and returns false otherwise. It uses the ATmega32U4's VBUS line, which is directly connected to the power pin of the USB connector.

See also

A method for detecting whether the board's virtual COM port is open: http://arduino.cc/en/Serial/IfSerial

Definition at line 65 of file Romi32U4.h.