CCS/TMS320F28388D: Acces to control the peripherals with CPU2?

NoName

Tool/software: Code Composer Studio

I'm currently working on a new project, where I try to run diffrent ISR on the two C2000.
i. e. I want a fast sampled ISR on CPU2 based on a ADC interupt, but I'm not able to clear the interupt flag of the ADC with CPU2.
Anotherproblem is, that I'm not able to write values into the ePWM compare registers.
Is there no write acces with CPU2 to the peripherals? cause I'm able to define masters for the GPIO, but I can't find a similar function for the other periphals like ADC or ePWM.

Any advice?

thanks and regards.

over 5 years ago

0 Vivek Singh over 5 years ago

TI__Guru** 116081 points

Hi,

Like GPIO you need to assigned the peripheral ownership to CPU2 to access peripheral registers from CPU2. Are you talking care of that in CPU1 code ?

Regards,

Vivek Singh

0 NoName over 5 years ago in reply to Vivek Singh

Prodigy 60 points

Hey,

GPIO working totally fine for me. My question is about reseting the interupt flag in the ADC register or writing new compare values into the ePWM registers with CPU2.

0 Vivek Singh over 5 years ago in reply to NoName

TI__Guru** 116081 points

In CPU1 application code did you assign the ownership of those peripheral to CPU2 ? If not then it'll not work.

Regards,

Vivek Singh

0 NoName over 5 years ago in reply to Vivek Singh

Prodigy 60 points

How can I do this? Didn't find the function in the adc.h or epwm.h and also in the technical ref pdf.

0 NoName over 5 years ago in reply to NoName

Prodigy 60 points

ok, I found the chip select registers in the technical ref. So, I have to set the right pins after the init of the periphal to set the ownership to CPU2?

0 Vivek Singh over 5 years ago in reply to NoName

TI__Guru** 116081 points

Hi,

What do you mean by "set the right pins" ? Is that selecting the pinmux option for the peripheral function on different GPIO pins ?

Regards,

Vivek Singh

0 NoName over 5 years ago in reply to Vivek Singh

Prodigy 60 points

Hi,

used the wrong wording there. Set the right bits in the CPUSEL register to transfer the onership to CPU2. I tried to find a function in the driverlib todo that, but I guess there is no function to tranfer the ownership of the peripherals.

0 NoName over 5 years ago in reply to NoName

Prodigy 60 points

ok, I could solve my Problem with
SysCtl_selectCPUForPeripheral(SysCtl_CPUSelPeripheral peripheral, uint16_t peripheralInst, SysCtl_CPUSel cpuInst);

For other developer with similar problem, don't forgat to activate the periphals on CPU2.

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CCS/TMS320F28388D: Acces to control the peripherals with CPU2?