With a slight redesign of the SPI-firmware and the accompanying command-line-interface, I'm proud to present a record high (for me at least) frame-rate for the TCD1304 of theoretically 125 Hz.

I'll be conservative and state that 100 Hz is possible. Because of x-mas I'm away from my scope, so a proper speed-test will have to wait.

The very short version of the story is that wiringpi has been replaced in favour of pigpio, and that SPI-communication is triggered by monitoring the logic state of one of the nucleos GPIOs.

Oh and you can collect 65535 integrations in one go.

For more details read this:

https://erossel.wordpress.com/2017/12/24/high-framerate-125-hz-tcd1304-firmware/

or look in the source code.

Downloads are available at https://tcd1304.wordpress.com

The UART-firmware is still crawling away at a pace of just above 1 Hz, but with lots more convenience.