with the PWM function and two supply sources (5V and -5v) I created two individual sq wave forms.. a 0V to 5V pulse and a -5V to 0V pulse. Now I want to combine the two pulses into single +-5V sq wave...no idea how to do that. Please help 
with the PWM function and two supply sources (5V and -5v) I created two individual sq wave forms.. a 0V to 5V pulse and a -5V to 0V pulse. Now I want to combine the two pulses into single +-5V sq wave...no idea how to do that. Please help