Forum Post: RE: CCS/TMS320F28027F: GPIO Toggle program

I followed all the step in the Lab 4, www.youtube.com/watch?v=lYcB1O3FpOo Just add this lines to see the GPIO3 toggle. EALLOW; GpioCtrlRegs.GPAMUX1.all = 0x00000000; // All GPIO GpioCtrlRegs.GPAMUX2.all = 0x00000000; // All GPIO GpioCtrlRegs.GPAMUX1.all = 0x00000000; // All GPIO GpioCtrlRegs.GPADIR.all = 0xFFFFFFFF; // All outputs GpioCtrlRegs.GPBDIR.all = 0x0000000F; // All outputs EDIS; for(;;) { GpioDataRegs.GPATOGGLE.bit.GPIO3=1; DELAY_US(1000000); } Still GPIO3 LED not toggle. Also, Is there any easy way to learn burn/flash Launchpad TMS320F28027F using CCS? There are so many steps mentioned in the video.