Author Topic: CY7C68013-based Bus Pirate and Logic Generator  (Read 2047 times)

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Offline Scratch.HTFTopic starter

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CY7C68013-based Bus Pirate and Logic Generator
« on: June 01, 2018, 04:28:19 am »
I've seen low-cost development boards based on a Cypress CY7C68013 (FX2) which can be used as a logic analyser, but how about using these boards as a logic generator (with a continuous streaming function which makes use of the FIFO - can also be used as a waveform generator up to (in theory) 48 MHz @ 8 bit output/24 MHz @ 16 bit output - possibly only an X^2 fraction of that) and even as a high speed Bus Pirate?
The Cypress FX2 has the ability to load "soft" firmware over USB via a vendor-defined command in the I2C EEPROM.
Also, I've read the Hantek 6022BL (based on an FX2) samples at 48 MS/s (one analog channel; half for both channels) and the 16 bit logic analyser operates at up to 24 MHz; therefore, the 6022BL most likely has a continuous streaming function.
If it runs on Linux, there is some hackability in it.
 

Offline abyrvalg

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Re: CY7C68013-based Bus Pirate and Logic Generator
« Reply #1 on: June 02, 2018, 10:01:47 am »
Believe me, many people here are full of brilliant ideas but are just too busy implementing some of them.
Why not create a github project? Start by implementing the part most interesting for you, maybe someone will catch up with the rest.

Btw, any progress with Hantek 4032L beyond ideas?
 

Offline hugo

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Re: CY7C68013-based Bus Pirate and Logic Generator
« Reply #2 on: June 02, 2018, 10:59:14 am »
 

Offline Gyro

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Re: CY7C68013-based Bus Pirate and Logic Generator
« Reply #3 on: June 02, 2018, 08:56:04 pm »
Note that you can also use PWM logic on those low cost 8-bit LA clones but you need to do a little surgery to switch the internal buffer direction to output (It's an HCT245). The original 8-bit Saleae didn't have the buffer, the inputs went straight into the CY7C68013.

Ideally you would make the buffer direction switch (or link) selectable.
Best Regards, Chris
 


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