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56
PWM Library
CCP module is available with a number of PICmicros. mikroC provides library which
simplifies using PWM HW Module.
Note: Certain PICmicros with two or more CCP modules, such as P18F8520, require you
to specify the module you want to use. Simply append the number 1 or 2 to a Pwm. For
example, Pwm2_Start(); Also, for the sake of backward compabitility with previous
compiler versions and easier code management, MCU's with multiple PWM modules have
PWM library which is identical to PWM1 (i.e. you can use PWM_Init() instead of PWM1_Init
() to initialize CCP1).
Library Routines
„
Pwm_Init
„
Pwm_Change_Duty
„
Pwm_Start
„
Pwm_Stop
Pwm_Init
Prototype
void Pwm_Init(unsigned long freq);
Returns
Nothing.
Description
Initializes the PWM module with duty ratio 0. Parameter freq is a
desired PWM frequency in Hz (refer to device data sheet for correct
values in respect with Fosc).
This routine needs to be called before using other functions from
PWM Library.
Requires
MCU must have CCP module.
Example
Initialize PWM module at 5KHz:
Pwm_Init(5000);
Pwm_Change_Duty
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