interrupts

[ubs1]

I am new to mcu FX2LP. in FX2LP sample project there are several handlers with same interrupt 0. Can all have same interrupt 0?.why?.

void ISR_Ures( void ) interrupt 0
void ISR_Susp( void ) interrupt 0
void ISR_Highspeed( void ) interrupt 0

[MallikaK_22 · Accepted solution]

Hi,

Yes, the “0” after the interrupt keyword is the ID for all USB interrupt requests.

Kindly refer to section 4.4- USB Specific Interrupts in the FX2LP TRM: https://www.cypress.com/file/126446/download

From it, you can get a better understanding of the internal implementation for the same.

Regards,

Mallika