samclarke2012 / ooklone_fram Goto Github PK

##The ooklone concept, with a high speed 1Mbit/128KB FRAM buffer & 32Mbit/4MB flash.##

Pin mapping for buttons is different, work in progress, not tested on hardware yet (awaiting delivery). This is a complete rewrite of the code (for no reason other than I wanted to understand it intimately. ooklone is a great idea and hats-off to texane for his invention).

######Differences so far:######

• Button combo for third UI option
• 1Mbit / 128KB 30MHz SPI FRAM (MB85RS1MT) - drop in replacement for the flash
• Ability to play/sample at (Hopefully) ~1MSPS (use on more tranceivers) [1]

[1] It's tight, 1MHz sample with 8Mhz SPI will most likely end up at around 900KHz sample rate to avoid interrupt collisions during SPI ops. However, for arbitrary signals on the sensor/wire this presents a usable (depending on FRAM) sniffer / spoofer on OOK modulated digital signals in the range of 0->450Kbps.

If a function x(t) contains no frequencies higher than B cps, it is completely determined by giving its ordinates at a series of points spaced 1/(2B) seconds apart.

Nyquist-Shannon sampling theorem

######Differences I would like to implement:######

• A multi modulation, multi symbol rate 'random packet' sender (semi-fuzzer)
• Ability to select modulation and symbol rate for RFM69 (for recordings on GFSK etc)
• I2C OLED (maybe 128x64) to enable the above