RTOS/CC2640R2F: CC2640r2f stops advertising

Part Number: CC2640R2F

Tool/software: TI-RTOS

Hi,

I am using CC2640r2f chip with project zero and Bluetooth 4.2.It works well continuously up to 10 days.afte 10 days it starts stop advertising but Application code inside cortex M3 working after restarting it again start advertising.We face same issue in CC2650 Chip with same project Zero but for this chip it stops advertising after 3 to 4 hours randomly.So we changed all PCB with chip CC2640r2f. We not facing this type of issues with STM bluenrg-1 chip or nordic NRF52832 chip they working well without stopping advertising.