DRV8870: Questions about demo codes Delay_us

Manu Chang

Part Number: DRV8870
Other Parts Discussed in Thread: DRV8860, MSP430F2350, DRV8860EVM

Hi,

My customer is evaluating with DRV8860 EVM and they have some related problem. As showed in following figure is the interrupt function in the demo code, it seems to delay 4 period.

Does this period means the clocking period? with a 16Mhz MSP430F2350 as MCU in EVM the total delay time is 1/16Mhz*4=0.25us?

For DRV8860 are there max delay time or any recommended delay time for this ?

Thanks!

Manu

over 1 year ago

0 Pablo Armet over 1 year ago

TI__Mastermind 37683 points

Manu,

What delay are they talking about? I can't make it out based on the code snippet.

Regards,

Pablo Armet

0 Manu Chang over 1 year ago in reply to Pablo Armet

TI__Intellectual 880 points

Hi Pablo，

Thanks for your fast response. This code is from the demo code of DRV8860 EVM on TI website, what customer want to confirm is that the exact delay time of this delay_us interrupt. From the code it seems that the delay lasts for 4 period, just wonder if the this period is exact the clock period of MCU?

Thanks!

0 Pablo Armet over 1 year ago in reply to Manu Chang

TI__Mastermind 37683 points

Hi Manu,

You downloaded the EVM firmware from ti.com? When I download the software files for the DRV8860EVM, I only see the GUI files.

Regards,

Pablo Armet

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DRV8870: Questions about demo codes Delay_us