Problems with labs 2a and 2b InstaSPIN FOC

Jorge,
proj_lab02 is for using the motor identification feature. If you don't have an inverter connected it won't do anything of note.

While this would be useful to have a lab01b which just tests ADC and PWM output - with no other control or logic - we don't have this lab at this time (and to be honest we probably won't create it anytime soon).

the easiest way is to connect a BOOSTXL-DRV8301 or BOOSTXL-DRV8305EVM and a 3-ph motor.

for your own inverter you will need to update any of the settings required (if you have remapped any of the signals or changed any of the voltage/current scaling and filters), then all of the projects will work.

you could write some of your own code to test PWM and ADC, sure.

Hello Chris,

First, I'd like to thank you for the advices you've given to me so far, they've been very helpful. However, I know have another issue!

I managed to disable the modules that require a BOOSTERPACK, so I'm now able to observe the 6 PWM signals without any problem. The thing is, I can't figure out which part of the program does the variation of the duty cycle in order to get a sine wave after puting the generated signal through a low-pass filter: my scope does not recieve any signal after the filter! I found out the part of the program that actually generates the PWM signals is this:

static inline void HAL_writePwmData(HAL_Handle handle,HAL_PwmData_t *pPwmData)
{
uint_least8_t cnt;
HAL_Obj *obj = (HAL_Obj *)handle;
PWM_Obj *pwm;
_iq period;
_iq pwmData_neg;
_iq pwmData_sat;
_iq pwmData_sat_dc;
_iq value;
_iq valor;
uint16_t value_sat;

for(cnt=0;cnt<3;cnt++)
{
pwm = (PWM_Obj *)obj->pwmHandle[cnt];
period = (_iq)pwm->TBPRD;
pwmData_neg = _IQmpy(pPwmData->Tabc.value[cnt],_IQ(-1.0));
pwmData_sat = _IQsat(pwmData_neg,_IQ(0.5),_IQ(-0.5));
pwmData_sat_dc = pwmData_sat + _IQ(0.5);
value = _IQmpy(pwmData_sat_dc, period);
value_sat = (uint16_t)_IQsat(value, period, _IQ(0.0));

PWM_write_CmpA(obj->pwmHandle[cnt],value_sat);
}

As I see it, the CMPA value stays the same always, that means the duty cycle remains the same and hence no modulation ever occurs, which I don't understand because this is supposed to be an example for 3 phase motor control. Should I write myself some extra code to make the modulation (i. e. with a look-up table) or is this option "hidden" someplace else in the program? Thank you very much and hope hearing from you soon.

Regards

Jorge Flores