CC3235MODSF: Entering in LPDS mode

Pradeep Patel

Intellectual 440 points

Part Number: CC3235MODSF

Hi,

I was going through the related thread on this topic and have following questions:

1. I am using UART with following control:

UART_control(uartHandle, UART_CMD_RXENABLE, NULL);

Will this affect MCU from going to LPDS mode automatically?

2. How to manually control Power policy enable and disable?

I referred power measurement example. I can see function Power_enablePolicy(). Is this the function I should use to enable power policy? Is there similar function for disabling power policy? Do I need to include some library to use these functions?

Thanks,

Pradeep

over 2 years ago

0 RogelioD over 2 years ago

TI__Genius 14801 points

Hi Pradeep,

Thanks for reaching out, I will follow up tomorrow.

Kind Regards,

Rogelio

0 RogelioD over 2 years ago in reply to RogelioD

TI__Genius 14801 points

Hi Pradeep,

If the Uart is enabled the device wont be able to enter LPDS if waiting for RX.

I would reference this document as it gives clear answers to your questions.

https://dev.ti.com/tirex/explore/node?node=A__AALP3yQlG3o8NGRyvnzFfg__com.ti.SIMPLELINK_CC32XX_SDK__fc2e6sr__LATEST

sections 2.4 and 2.5

Also a helpful thread to reference.

https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum/999821/cc3235modsf-how-to-enter-mcu-lpds

Kind Regards,

Rogelio

0 Pradeep Patel over 2 years ago in reply to RogelioD

Intellectual 440 points

Hi Rogelio,

I am using callback function for UART data reception. If I use RX_DISABLE in uart_control() then my call back function is not called. If I use polling method then my application gets block at uart_read() function call. Please refer below threads for these problems:

https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum/1181878/launchcc3235mod-uart-non-blocking-application-with-freertos

https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum/1164865/launchcc3235mod-uart-in-non-blocking-mode-not-getting-callback

Can I change this uart control during run time e.g. before putting CC3235 in LPDS mode I will set control as RX_DISABLE and after waking up putting it back as RX_ENABLE?

I have already referred the thread you have pointed out but still I have following question:

Do I have to use any library for using APIs like Power_enablePolicy()?

Thanks,

Pradeep

Wi-Fi

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CC3235MODSF: Entering in LPDS mode