albymor / stm8_fun Goto Github PK

[Proper README will be written later]

Trying to make a POV display using stm8 mcu as I'm learning stm8. But for now, just having some fun with it. I may even change my goal and make something else rather than a pov display.

The stm8 is connected to a 4Mbit Adesto spi standard flash where images/animations might be stored. Currently both the flash driver and ws2812 driver work, but yet to decide what type of led will be used finally.

1. Download and install SDCC compiler (https://sourceforge.net/projects/sdcc/files/)
2. Build stm8flash for uploading binary to stm8 mcu (https://github.com/vdudouyt/stm8flash)
3. Compile using make command (Optionally, clean using make clean before this step)
4. Upload using make burn command

• AT25SF041 flash driver
• WS2812 / WS2811 driver

• Biggest one: slip ring and brush based power transfer is not reliably working. I suck at mechanical designs.
• WS2812 is too slow for POV.

• Load data to flash using UART from PC (images/ animation)
• Read the loaded data from the flash
• Make the circuit in KiCAD
• Select what LED to use (WS2812? or normal LED with serial LED-driver IC?)
• Read from flash and drive LEDs based on that data
• And lots of other works related to the motor selection/body design/power transfer (slip ring or wireless?) etc..

• WS2812 relaxed timing (https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/)
• github gist on WS2812 drv (https://gist.github.com/TG9541/1761fa86b425a0c909b7bd1cc8017c2b)
• Bit banging on AVR (https://www.instructables.com/Bitbanging-step-by-step-Arduino-control-of-WS2811-/)
• Another github gist. Helpful but timimng didn't match (https://gist.github.com/stecman/eed14f9a01d50b9e376429959f35493a)
• Great resource for stm8 development (https://lujji.github.io/blog/bare-metal-programming-stm8/)
• Good examples based on SDCC compiler (https://github.com/jukkas/stm8-sdcc-examples/blob/master/spi-out-max7219/spi-out-max7219.c)