TMS320F28377D: TMS320F28377D GPIO issue

Part Number:TMS320F28377D

hi,

i want to generate PWM based on one input . i don't know how to do this so i m using GPIO for this . but when i am reloading the program . GPIO showing some glitch and my mosfets blow out  . so pls suggest me to avoid these glitch or to config.  PWM based on  input. my sample code is as below.

if (sin(theta_pll) >=.06975 )
GpioDataRegs.GPADAT.bit.GPIO3 =1;
else
GpioDataRegs.GPADAT.bit.GPIO3 =0;

if (sin(theta_pll) <=-.06975)
GpioDataRegs.GPADAT.bit.GPIO2 =1;
else
GpioDataRegs.GPADAT.bit.GPIO2 =0;