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Hi, According to TI documentation, after the INT0 maskable interrupt line is asserted the following should occur: 1.) The corresponding IFR bit is set 2.) If INTM=0 and corresponding IMR bit = 1 then the CPU acknowledges the interrupt by asserting the IACK signal. 3.) Service Interrupt...etc When I set the INT0 line low, I notice that the IFR bit IS set. The IMR mask register bit 0 is set (for INT0) and INTM does equal 1, exactly as the documentation says it should. My problem is that I am not receiving a IACK signal. I also noticed that the IACK doesn't even assert during reset or any of the other non-maskable interrupts. Any ideas? Thanks for the help! -Dave Weatherwax |
Not receiving IACK signal when asserting INT0
Started by ●November 7, 2001
