sample output

Program to send data with 5 MHz to GPIOs. GP1 to GP5 is used, for bit 0 to bit 4.

circuit diagram for 5 bit analog output

test setup

example output on a monitor with the test image

TODO

• starting from GP0 doesn't work
• DMA stop code doesn't work
• Python script can be used only once after reset, looks like the DMA transfer messes up the USB transfer timing