I am using CC3230 SoC for one of my projects. The SoC's reset is controlled through MSP430 MCU. I have a push button switch which is read on MSP430 MCU. When the switch is detected, MSP430 sends data to CC3230 over UART and then CC3230 glows the LEDs. We have observed that the when switch is pressed for the first time, device does not give any response but when it is pressed second time, the device gives response. We have checked for the data transmitted over UART and it is fine.
We are suspecting that there is some issue happening at the ISR handling. This is happening for few devices and not for all the devices.
Any idea what is causing issue?
Appreciate your help.