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Altera_Forum
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13 years ago

Interrupt Not Enable

Dear Friends, I am trying to use interrupt on Altera DE2_115 board. but it is not working. i am taking LOAD pulse as an interrupt and at every interrupt taking data from external bus "DATA...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Did you enable the edge cap functionnality in the load PIO component? It is disabled by default. Be sure also to set the IRQ mode to 'edge'.

To see if the problem is coming from the PIO (or something external) or the interrupt itself, you can try and replace "if( edge_capture)" by "if (IORD_ALTERA_AVALON_PIO_EDGE_CAP(LOAD_BASE))". If it works then, it means there is a problem with the interrupt process itself, if it doesn't, that's it a problem with the PIO or something connected to it.