问题描述:
The p*gram *reezes a*ter some time and starts responding as soon as I connect the U* port to the board and open the Se*al-1 port.
The p*gram in the main *unction starts three pe*odic timers with separate cal*ack *unctions.
How to *oid such *reeze/hang in all instances o* board p*grammed with the code?
