It seems to take about 6ms to execute the set frequency function - ??si5351.set_freq(f , SI5351_CLK0); I determined this by toggling an output pin before and after this line of code. Is that normal? Is there any way to do it faster?
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I am updating an AD9850 based CW xcvr I built a few years back. It switches the DDS from (Freq-IFOffset) on receive to (Freq) on transmit. I need to key the transmitter ON after the Si5351 has been set to the transmit freq and OFF before I set it to the receive freq. My CW element length will then be at least 6ms too short. At 30 WPM that is about 15% shorter than normal and I don¡¯t think that will sound good.
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I guess I could just use two clock outputs ¨C one for the transmitter and one for the receiver, but I would like to do it all with one clock if possible. ?Thanks and 73 - Jerry - W0PWE
