I hated the fact the Zybo Zynq does not have a proper D/A converter on its own.
So I programmed a VHDL 1-bit delta sigma modulator according to this Link.
The delta sigma modulator is working as a charm, but I want to be able to set the frequency of the waveforms i am generating.
I want to set the frequency of the waveform by using an 1-10V input signal.
I am okay with C and VHDL but I have never used the block designs or Zynq IP & GPIO Blocks..
The PMOD connector connected to the fpga is already in use so I guess my options are.
Use a external microcontroller with ADC and use SPI to the PS part of the zybo zynq.
Use the XADC connect it to the PS and of course use a voltage divider or something
Microcontroller and just bit bang the values directly to the PL side
Are there any suggestions on the easiest way of doing this ?
ps: Is it possible to do something similar to interrupts in VHDL
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StudentAmsterdam
Dear all,
I hated the fact the Zybo Zynq does not have a proper D/A converter on its own.
So I programmed a VHDL 1-bit delta sigma modulator according to this Link.
The delta sigma modulator is working as a charm, but I want to be able to set the frequency of the waveforms i am generating.
I want to set the frequency of the waveform by using an 1-10V input signal.
I am okay with C and VHDL but I have never used the block designs or Zynq IP & GPIO Blocks..
The PMOD connector connected to the fpga is already in use so I guess my options are.
Are there any suggestions on the easiest way of doing this ?
ps: Is it possible to do something similar to interrupts in VHDL
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