Thanks to the DMA controller inside the STM32, the microcontroller is capable of sending and receiving data through SPI at the same time.

This makes all of DMA memory your display buffer. And leaves plenty of precious microcontroller cycles available to calculate what patterns you want the RGB LEDs to display.

STMicroelectronics has put plenty of analogue features and DMA (direct memory access) into its latest 8bit 8pin microcontroller. Dubbed STM8L050, alongside two comparators, it has four-channel 12bit ...