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  Topic: NAMM 2017
frank

Replies: 36
Views: 5786

PostForum: FV-1 hardware questions   Posted: Fri Nov 17, 2017 5:43 pm   Subject: NAMM 2017
Nothing to share yet, just taking longer than we would like but at least it is all forward movement.
  Topic: Adding 1 to Address Pointer
frank

Replies: 3
Views: 140

PostForum: FV-1 software questions   Posted: Wed Oct 25, 2017 9:34 am   Subject: Adding 1 to Address Pointer
Something like that should work. You can also try smoothing the modulation source or taking it further and interpolating between samples.
  Topic: Formula for Ramp LFO Frequency in Hertz
frank

Replies: 1
Views: 89

PostForum: FV-1 software questions   Posted: Tue Oct 24, 2017 9:06 pm   Subject: Formula for Ramp LFO Frequency in Hertz
We never derived that equation since the circuit was designed for address offsetting rather than as an LFO. You should be able to just write the ramp to a DAC output to measure the frequency for diffe ...
  Topic: Zero Crossing
frank

Replies: 1
Views: 92

PostForum: FV-1 software questions   Posted: Fri Oct 20, 2017 5:32 pm   Subject: Zero Crossing
You might consider "skp zrc" which is true if the sign of ACC and PACC are different so keep the old sample value so you can load it into ACC then load the new sample into ACC which pushes ACC into PA ...
  Topic: Can you add/use Python or C++ code with the FV-1 IDE?
frank

Replies: 3
Views: 136

PostForum: FV-1 software questions   Posted: Thu Oct 19, 2017 12:00 pm   Subject: Can you add/use Python or C++ code with the FV-1 IDE?
There is no way for the assembler to read or understand any other language. It can only understand FV-1 assembly code.
  Topic: SpinAsm - Writing to EEProm directly
frank

Replies: 1
Views: 84

PostForum: FV-1 software questions   Posted: Thu Oct 19, 2017 8:28 am   Subject: SpinAsm - Writing to EEProm directly
Unfortunately you cannot, the assemble button will only go to program 0. It is a fixed value in the code so no way to change it.
  Topic: Can you add/use Python or C++ code with the FV-1 IDE?
frank

Replies: 3
Views: 136

PostForum: FV-1 software questions   Posted: Wed Oct 18, 2017 11:00 am   Subject: Can you add/use Python or C++ code with the FV-1 IDE?
Nope, you will have to translate it to FV-1 assembly. FV-1 math is all fixed point so it cannot handle float values at all.
  Topic: NAMM 2017
frank

Replies: 36
Views: 5786

PostForum: FV-1 hardware questions   Posted: Tue Oct 17, 2017 8:28 am   Subject: NAMM 2017
No date yet, we are working on what we expect to be the final rev. We do have a beta dev board up, similar to the board that was at NAMM but now with USB interface, rotary encoder for program selectio ...
  Topic: Exact timing couter
frank

Replies: 5
Views: 304

PostForum: Algorithm development   Posted: Tue Oct 17, 2017 8:10 am   Subject: Exact timing couter
This is where things can get a little off depending if you do 'skp neg' versus 'skp gez', where you increment/decrement the offset in the code, trying to use the same value as an address/pointer, etc. ...
  Topic: Exact timing couter
frank

Replies: 5
Views: 304

PostForum: Algorithm development   Posted: Mon Oct 16, 2017 12:29 pm   Subject: Exact timing couter
OK that explains the *256.

Yes, read from "buffer" as it will have wrapped around the circular buffer having been delayed for exactly 32768 sample periods then write over it with the new data. This ...
  Topic: Exact timing couter
frank

Replies: 5
Views: 304

PostForum: Algorithm development   Posted: Mon Oct 16, 2017 9:33 am   Subject: Exact timing couter
Few things to consider:

1. The assembler allocates N+1 memory locations so you can have separate read and write pointers but you want to use all 32768 locations to get a full second so you will wan ...
  Topic: Board bringup issues
frank

Replies: 14
Views: 503

PostForum: FV-1 hardware questions   Posted: Sun Oct 08, 2017 9:10 am   Subject: Board bringup issues
We would need the schematic of the programmer and the PCB to figure out what happened. And those clones often do not handle voltages properly.
  Topic: Board bringup issues
frank

Replies: 14
Views: 503

PostForum: FV-1 hardware questions   Posted: Sat Oct 07, 2017 1:54 pm   Subject: Board bringup issues
There are pull-ups in the FV-1 on SDA and SCL so the I2C bus is not lacking them they are just internal.
  Topic: Board bringup issues
frank

Replies: 14
Views: 503

PostForum: FV-1 hardware questions   Posted: Fri Oct 06, 2017 7:30 am   Subject: Board bringup issues
Try using the internal program set to make sure the PCB and chip are functioning. If they are then try the EEPROM in the dev board and see if it works there.
  Topic: Indicator LED connected to DAC
frank

Replies: 3
Views: 415

PostForum: Algorithm development   Posted: Wed Sep 13, 2017 8:00 am   Subject: Indicator LED connected to DAC
The DAC outputs are not designed to drive very much current so it is better to use a buffer with a high impedance which then drives the LED.
 
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