CC2642R-Q1: Power consumption on CC2642 with UART driver

SDK version: 4.40

device: CC2642R-Q1

example code: simple_peripheral

Hi Simon,

Here is the Power Management section of the BLE5-Stack User's Guide with helpful links to other resources.

If you must use a sleep function then Task_sleep is preferred.  Since there is such a long time between closing and opening the UART driver, my recommendation is to close the driver and use a timer instead of a sleep task to determine when to re-open the driver.  You can use the Util driver as demonstrated in by the Util_* functions in the simple_peripheral.c file.  This will allow the main task to to pend on events as before.  If they continue to experience issues then they should further provide snippets of their UART code initialization and operation.

Regards,
Ryan

Hi Ryan,

Sorry for late response. Customer and I tried to close UART as you recommended but we still find the power is high. I will update customer UART code below.

In the meantime, is there a way to shut UART manually? why closeAllDriver seems not work.

Hi Ryan,

For more information, please find in tidrive.ext.ti.com/.../172589dc-85af-440b-8d3c-56dd75c6535d

The link does not work, please try again.  I don't know the contents of closeAllDriver since it is not a TI API.

Regards,
Ryan

tidrive.ext.ti.com/.../172589dc-85af-440b-8d3c-56dd75c6535d