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DMA Performance Test with STM32L031

sys/arm/stm32l031x4/u8g2_dma_spi_32mhz/README.md

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DMA Performance Test with STM32L031

ConstructorSysClkTransferFPSBSS (RAM)
uc1609_slg19264_f2MHzSW SPI0.31692
uc1609_slg19264_f2MHzHW SPI4.71692
uc1609_slg19264_f2MHzDMA SPI5.01948
uc1609_slg19264_12MHzSW SPI0.3348
uc1609_slg19264_12MHzHW SPI2.6348
uc1609_slg19264_12MHzDMA SPI2.6604
ConstructorSysClkTransferFPSBSS (RAM)
uc1609_slg19264_f32MHzSW SPI6.01692
uc1609_slg19264_f32MHzHW SPI73.81692
uc1609_slg19264_f32MHzDMA SPI76.71948
uc1609_slg19264_132MHzSW SPI5.6348
uc1609_slg19264_132MHzHW SPI39.6348
uc1609_slg19264_132MHzDMA SPI40.7604

See also https://github.com/olikraus/u8g2/issues/2564

GPIODisplayColor
PA14CDbrown
PA13CSyellow
PA7MOSIgreen
PA6Resetwhite
PA5SCKpurple