The HDMI demo assigns L6 as a LED output: https://github.com/sipeed/TangPrimer-25K-example/blob/434ef838e20836d6cc7e07b1dd1994d0de4a74e2/hdmi/svo/src/hdmi.cst#L34 But L6 is on the USB port. The LEDs are on D7 and E8
The HDMI demo assigns L6 as a LED output:
TangPrimer-25K-example/hdmi/svo/src/hdmi.cst
Line 34 in 434ef83
But L6 is on the USB port. The LEDs are on D7 and E8