Other Parts Discussed in Thread: TMS320F28335
Hello, I am using TMS320F28335 part. I am using external interrupts. I programmed XINT1 successfully and verified it works. XINT1 is assigned to GPIO9. Then, I needed to enable GPIO40 to an external interrupt. I think I can not use XINT2 because GPIO40 belong to portB. So I assigned XINT3 to it and follow the same steps that I did for XINT1. assign GPIO40 to XINT3 enable XINT3 enable PIE group 12 int 1. XINT1 works fine but XINT3 does not. I am using DSP BIOS so I configured PIE HWI in DSP configuration tool the same way I did for for XINT1. Is there a difference between XINT1 and XINT3 as far as programming? Thanks in advance for your help. Felix Valladares