Koen Teetaert

Spurious Interrupt on coldfire 5329

Discussion created by Koen Teetaert on Jul 6, 2007
Latest reply on Jul 9, 2007 by Paul McConkey
I'am working on a coldfire CF5329. When I want to use the external interrupt IRQ1 a spurious interrupt occur.
When I start the coldfire it works fine... no external interrupts. When I start my external device, it generates a interrupt (10µs low) every 500µs. Immediatelly after i switch my external device on, a spurious interrupt will occur.
I there a reason for this interrupt??
My IRQ1 level = 5 and my SR register is set to 0x3000