User Manual

Open429I-C User Manual
Version: V1.3.3, Date: 2019.04.02 12 / 47
2.7. ADC+DMA
⚫ Overview
AD acquisition demo, DMA transfer
⚫ Hardware connection
Connect Analog Test Board to SPI1 (ADC+DAC)connector
⚫ Operation and result
Rotate the onboard potentiometer, the below message will be printed on the
serial debugging assistant:
******** ADC DMA Example ********
AD1 value = 3.298V
AD2 value = 1.647V
******** ADC DMA Example ********
AD1 value = 3.298V
AD2 value = 1.647V
2.8. DAC
⚫ Overview
DA output demo, output via DMA channel