Mikroelektronika MIKROE-350 Data Sheet

The example changes PWM duty ratio continually by pressing buttons on PORTC (0-3). If LED is
connected to PORTB.B1 or PORTB.B2 ,you can observe the gradual change of emitted light. This
example is written for ATmega168. This AVR MCU has only Timer/Counter1 split over two chan-
nels A and B. In this example we are changing the duty ratio on both of these channels. 

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub procedure PWM16bit_Start(dim timer as byte)

Nothing.

Starts PWM-16bit module with alredy preset values (wave mode, prescaler,
inverted and duty) given in the PWM16bit_Init. 

MCU must have CMO module to use this library. PWM16bit_Init must be called
before 
using this routine, otherwise it will have no effect as the PWM module is not ini-
tialised. 

PWM16bit_Start( _TIMER1 )

// Starts the PWM-16bit module

on Timer/Counter1

or

PWM16bit_Start( _TIMER3 )

// Starts the PWM-16bit module

on Timer/Counter3

sub procedure PWM16_Stop(dim timer as byte)

Nothing.

Stops the PWM-16bit module, connected to Timer/Counter set in this stop function. 

MCU must have CMO module to use this library. Like in PWM16bit_Start
before, PWM16bit_Init must be called before 
using this routine , otherwise it will have no effect as the PWM module is not
running. 

PWM16bit_Stop( _TIMER1 )

// Stops the PWM-16bit module on

Timer/Counter1

or

PWM16bit_Stop( _TIMER3 )

// Stops the PWM-16bit module on

Timer/Counter3