hi all! I'm using NiosII with StratixII. i wanted to get interrupts from a micro controller of 7.393MHz Oscillator which generates half the oscillator clock. Nios works at 50Mhz. so what modification i need to do on nios
nios II sratixII interrupt handling with uController
Feb 07, 2006
4 Replies
You should not need anything special - just treat the incoming interrupt signal as an asynchronous input (use a couple of latches to reduce the chance of metastability).
The problem is i'm getiing input as a pattern say a signal from an IR receiver which will be converted to digital with an ADC. i must measure the delay between rising edge and falling edge. if i use 50Mhz clock on nios , will i be able to get same delays as micro controller gets at 7 odd Mhz
I'm trying to get RC5 coded IR signal on nios from a micro controller
Why not disign custom logic that runs a counter and measure the difference in the edges of interest? Then latch that counter results and read it into the NIOS.
gm
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