Flowchart comes with common anode 7-segment and 4 7-segment
to change it to common cathode. use example tut_17 for example
i used this simple mehtod.
1- do your project normal
2- compile to c
3- view c code
4- in
void FCD_LED7Seg10_ShowDigit(char Value, char DecimalPoint)
5- add
porta = ~porta;
6- compile and link by hand
7- take the generated hex and burn it
good luck