LP-CC2651P3: Power shutdown with timer wake up

leo lau

Part Number: LP-CC2651P3

Hello,

I am testing gpioshutdown example and able to wake up my device with button. But I have some questions about the example and would like an expert to clarify.

1. I tried modify shutdownTime of function Power_shutdown(0, 5000); And I expect the device wake up after 5 second the device shut down. But it does not work.

Does CC2651 support this parameter? If not, which model with BLE support this function?

2. Is there any alternative to wake the device from shutdown with timer?

3. Where is the list of shutdownState from the first parameter of Power_shutdown()? What is the effect if I modify this parameter?

9 months ago

+1 Alex Fager 9 months ago

TI__Expert 6391 points

Hello leo lau,

1.) A quote from Clement, from this e2e post https://e2e.ti.com/f/1/t/1210680/.

The parameter "shutdownTime" of the function Power_shutdown() is not supported on C13xx/CC26xx devices. On C13xx/CC26xx devices, in shutdown mode only I/Os maintain their operation. All voltage regulators,voltage,and power domains are off.

For additional details, please review section §6 of the technical reference manual and the Power Management user's guide.

2.) You could use an interrupt from another device if needed (to a GPIO pin), or the watchdog.

3.) List of shutdown states, you can find them listed in your PowerCC62XX.h file in your SDK (enter your SDK and search it via file explorer). I think the name for shutdownstate is just for the device specific implementation (reference Power.h File Reference (ti.com)).