Class that provides functionality for the ATmega644's on-board 16-bit timer, such as an ISR. More...

Collaboration diagram for Communication::Timer:

Static Public Member Functions
static void	init (Communication *comm)
	Initialize the Timer class. More...

static void	stop ()
	Stop the 16-bit timer by setting no clock source.

static void	start ()
	Start the timer, by setting the counter value to TIMER_BOTTOM & setting the clock source to CS10.

static void	setMatchValue (const uint16_t matchValue)
	Change the value of register OCR1A. More...

Static Public Attributes
static constexpr uint16_t	ETU = 372/1
	The counter value which the timer should match. More...

Static Private Member Functions
static void	serviceRoutine () __asm__("__vector_13") __attribute__((__signal__
	Interrupt Service Routine for the 16-bit timer. An interrupt is triggered if the timer hits the value stored in OCR1A.

Private Attributes
static void	__used__

static void	__externally_visible__

Static Private Attributes
static Communication *	mComm
	Communication object to access the class methods & attributes.

static constexpr uint16_t	TIMER_BOTTOM = 0x0000
	Timer bottom value.

Detailed Description

Class that provides functionality for the ATmega644's on-board 16-bit timer, such as an ISR.

Authors: Philipp Karg (phili.nosp@m.pp.k.nosp@m.arg@t.nosp@m.um.d.nosp@m.e)

Date: 05.06.2022

Copyright: Philipp Karg 2022

Member Function Documentation

◆ init()

static void Communication::Timer::init ( Communication * comm )

static

Initialize the Timer class.

Copy the address of the provided Communication pointer, comm to mComm.
Set-up the timer: Enable CTC mode, enable Output Compare Match A Interrupts & set the match value to ETU.

Parameters

[in] comm (Communication *): Communication pointer.

◆ setMatchValue()

static void Communication::Timer::setMatchValue ( const uint16_t matchValue )

inlinestatic

Change the value of register OCR1A.

Parameters

[in] matchValue (const uint16_t): Value to set for OCR1A.

Member Data Documentation

◆ ETU

constexpr uint16_t Communication::Timer::ETU = 372/1

staticconstexpr

The counter value which the timer should match.

The default value for a single elementary-time unit (ETU) is: 1ETU = F/D * 1/f_clk, where F is the clock rate conversion integer with a default value of 372 & D is the baud rate adjustment integer with a default value of 1.

If the Timer is run at the same clock speed as the CPU, it needs to count F/D = 372/1 times, to match at every ETU.

The documentation for this class was generated from the following file:

communication.h

Static Public Member Functions

Static Public Attributes

Static Private Member Functions