User manual

437
mikoPascal PRO for dsPIC30/33 and PIC24
MikroElektronika
PWMx_Mc_Set_Duty
PWMx_Mc_Start
Prototype
procedure PWM1_Mc_Set_Duty(duty, channel : word);
// For dsPIC 33FJ MCUs that have PWM2 module :
procedure PWM2_Mc_Set_Duty(duty : word);
Description The function changes PWM duty ratio.
Parameters - duty: PWM duty ratio. Valid values: 0 to timer period returned by the PWMx_Mc_Init function.
- channel: number of PWM channel to change duty to.
Returns Nothing.
Requires The dsPIC30/33 MCU must have the Motor Control PWM module.
The PWM module needs to be initalized. See the PWMx_Mc_Init function.
Example
//Set duty ratio to 50% at channel 1:
PWM1_Mc_Init(5000,1,$F,0);
...
PWM1_Mc_Set_Duty(32767, 1);
Notes - Number of PWM modules per MCU differs from chip to chip. Please, read the appropriate datasheet
before utilizing this library.
- PWM library routines require you to specify the module you want to use. To use the desired PWM
module, simply change the letter x in the routine prototype for a number from 1 to 2.
Prototype
procedure PWMx_Mc_Start();
Description Starts the Motor Control PWM module (channels initialized in the PWMx_Mc_Init function).
Parameters None.
Returns Nothing.
Requires The dsPIC30/33 MCU must have the Motor Control PWM module.
The PWM module needs to be initalized. See the PWMx_Mc_Init function.
Example
‘ start the Motor Control PWM1 module
PWM1_Mc_Start()
Notes - Number of PWM modules per MCU differs from chip to chip. Please, read the appropriate datasheet
before utilizing this library.
- PWM library routines require you to specify the module you want to use. To use the desired PWM
module, simply change the letter x in the routine prototype for a number from 1 to 2.