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C6748 gpio interrupt latency

Rex Taylor
Prodigy 205 points

Hi,

Hardware Mity DSP L138 board. CCS 5.3.0.00090 SYS/BIOS project release build.

I have an interrupt being triggered by a rising edge on GPO[0]. On entering my Isr() I am setting GPO[1] high and then clearing it oin the Ist(). The time between the GPO[0] rising edge and GPO[1] going high is around 1.2uSecs. Is this correct, it seems a little long to me?

Cheers Rex