DSPIC33CH256MP506

[sezgin ozan]

Hello everyone, I am using dspic33ch256mp506 for an 3 phase inverter project, but can not start the HSPWM module in slave core, slave core uses pwm1, pwm4 and pwm7 pairs. Before this project I used dspic33ep512mu810 and it works fine, I used similar setup function for the projects but HSPWM module does not start, ı think ı must enable the hspwm modules that slave will use , from master module but can not find the way, For pin that slave will use ı put "#fuse CPRA" for example, probably similar fuses must put for hspwm modules , can any know how to enable the module from master core

thanks

[Ttelmah]

CPRA is not a single fuse. It is a 5 fuses, needing a 5 bit number. The syntax
is
#fuse CPRA=nn
where nn is the numeric value to control the fixe fuses. By default it is
set to 31, which means the main core owns all five bits.

[sezgin ozan]

Hi Ttelmah, I have the pins that the slave core will use, but can not make the HSPWM module work, ı will post the set up code below




//! setup_hspwm_unit(1, HSPWM_ENABLE | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PHASE_FROM_MPHASE_REG, dead_band, dead_band);
//! setup_hspwm_unit(4, HSPWM_ENABLE | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PHASE_FROM_MPHASE_REG, dead_band, dead_band);
//! setup_hspwm_unit(7, HSPWM_ENABLE | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PHASE_FROM_MPHASE_REG, dead_band, dead_band);
setup_hspwm_unit(1, HSPWM_ENABLE | HSPWM_USES_MASTER_CLOCK | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PERIOD_FROM_MPER_REG, dead_band, dead_band);
setup_hspwm_unit(4, HSPWM_ENABLE | HSPWM_USES_MASTER_CLOCK | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PERIOD_FROM_MPER_REG, dead_band, dead_band);
setup_hspwm_unit(7, HSPWM_ENABLE | HSPWM_USES_MASTER_CLOCK | HSPWM_H_POLAIRTY_HIGH | HSPWM_L_POLARITY_HIGH | HSPWM_COMPLEMENTARY | HSPWM_CENTER_ALIGN_MODE | HSPWM_PERIOD_FROM_MPER_REG, dead_band, dead_band);






setup_hspwm_unit(2, HSPWM_DISABLE);
setup_hspwm_unit(3, HSPWM_DISABLE);
setup_hspwm_unit(5, HSPWM_DISABLE);
setup_hspwm_unit(6, HSPWM_DISABLE);
setup_hspwm_unit(8, HSPWM_DISABLE);

uint16_t PwmPeriod = 2344/2; // 1200;//2344;//6000;

setup_hspwm(HSPWM_CLOCK_DIV_BY_2 , PwmPeriod);
// setup_hspwm(HSPWM_CLOCK_FPLLO | HSPWM_CLOCK_DIV_BY_2, pwmPeriod);
// setup_hspwm(HSPWM_CLOCK_AFPLLO | HSPWM_CLOCK_DIV_BY_2, pwmPeriod);

set_hspwm_period(1, 1150); // Set the frequency of the PWM signal
set_hspwm_period(4, 1150); // Set the frequency of the PWM signal
set_hspwm_period(7, 1150); // Set the frequency of the PWM signal.
//! set_hspwm_phase(1, 1150); // Set the frequency of the PWM signal
//! set_hspwm_phase(4, 1150); // Set the frequency of the PWM signal
//! set_hspwm_phase(7, 1150); //


set_hspwm_duty(1, 500);
set_hspwm_duty(4, 500);
set_hspwm_duty(7, 500);


I tried many things but can see pwm outputs,

[temtronic]

hmm.....
HSPWM_H_POLAIRTY_HIGH

pretty sure it should be 'POLARITY'........

I'm a lousy two finger typer...........but I saw this...

[sezgin ozan]

Yes you are right but in definition it is like that , so I wrote as this

[Ttelmah]

and your #pin selects?

[sezgin ozan]

Hi Ttelmah, I used pair 1, 4 and 7 and thought that it is ok, how can I select pins, they are D0, D1 , C10, C11, C14 and C15. In master core program I select them as pins wil be used in Salve core.


#fuses CPRC=0x33df

#fuses CPRD=0xfffc

[Ttelmah]

Critical question.

What compiler version?????.

There were some significant register fixes done on this family a couple of
versions ago.

[sezgin ozan]

Hi, version 5.118