The following piece of code should react to the falling edge of a 1-bit input pio and count the falling edges of a signal.
settings: no interrupt
synchronous capture
falling edge
After one falling edge the loop is continously run.
With a DSO it was detected that edge capture register was not cleared. How does one reset edge capture register properly? Where is my mistake?
Thanks in advance.
andy
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while(counter<=end)
{
while(edge_capture==0)
{
edge_capture=IORD_ALTERA_AVALON_PIO_EDGE_CAP(BASE);
}
edge_capture=0;
IOWR_ALTERA_AVALON_PIO_EDGE_CAP(BASE,0x0);
counter++
}
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