> -----Original Message----- > From: Estabridis, Janet P > Sent: Thursday, December 16, 1999 5:51 AM > To: Estabridis, Janet P; '[EMAIL PROTECTED]' > Subject: RE: IRQ not being seen > > This hasn't gotten thru ! > > -----Original Message----- > From: Estabridis, Janet P > Sent: Wednesday, December 15, 1999 1:17 PM > To: [EMAIL PROTECTED] > Subject: FW: IRQ not being seen > Importance: High > > > > -----Original Message----- > From: Estabridis, Janet P > Sent: Wednesday, December 15, 1999 10:46 AM > To: 'RT Linux Group' > Subject: IRQ not being seen > Importance: High > > Hi, > I'm hoping that this is an easy one. > > I have Kernel 2.0.36 rtlV1.1 > > I have an AMPRO embedded CPU with a feature of having Serial 1 being > configured to be RS485. It is at address 0x38F IRQ 4. It shared the IRQ > with Serial 3. I have disabled Serial 3 in the BIOS so that I should only > have Serial 1 at IRQ 4. > > Now, I have gotten the RS485 to work in polled mode, but when I try > to install and interrupt handler for IRQ 4 and initialize the UART 16C550 > to enable interrupts I never get to my ISR. I have an application that I > run and I can see that the Interrupt Ident Reg sees that an interrupt has > happened and the Line Status Reg indicates that there is a byte there too. > > > I have implemented the same rt task on the machine that is now > sending the data. It has an ISA RS485 card that responds to ISR 5 just > fine. > > Is there something magical about using ISRs that are reserved for > motherboard functionality ? > > Thanks -- > > Janet Estabridis > Electrical Engineer > NAWC Code 473E00D > Building 31440 Room 1017 > China Lake, CA 93555 > [EMAIL PROTECTED] > (760) 939-2896 FAX (760) 939 -3075 > --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/
