Comments (2)
pavel-demin
commented on August 23, 2024
Hi Mike,
The following code on lines 324-326 in sdr-transceiver-hpsdr.c reads the preamplifier bit and sets pin DIO1_P to high or low:
https://github.com/pavel-demin/red-pitaya-notes/blob/master/projects/sdr_transceiver_hpsdr/server/sdr-transceiver-hpsdr.c#L324
In the current version, if the preamplifier bit is 1, then the pin DIO1_P is high. This way it can be used to connect or bypass a preamlifier. Are you proposing to invert it? I'm not sure how it would affect already existing setups that use this pin.
I can think of a solution with DIO1_P remaining as it is and with DIO2_P outputting inverted preamplifier signal.
Best regards,
Pavel
from red-pitaya-notes.
pavel-demin
commented on August 23, 2024
The outputs for 10 dB and 20 dB attenuators control are now connected to the pins DIO2_P - DIO3_P of the extension connector E1. So, the preamp output can be used to control a pream and the attenuator outputs can be used to control attenuators.
from red-pitaya-notes.
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