Tool/software:
In example found in directory f2803x-->examples-->c28, named: gpio_sertup, in:
void Gpio_setup2(void) is written:
GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 3; // GPIO7 = ECAP2
but this pin has not ECAP capability.
Best wishes and thanks for your support, Enzo - DOLANG Geophysical - Italy