.. _pnvio: ================================ PNVIO: external device interface ================================ .. contents:: .. todo:: write me Introduction ============ .. todo:: write me MMIO registers ============== .. space:: 8 pnvio 0x800 GPIOs, I2C buses, PWM fan control, and other external devices .. todo:: write me .. space:: 8 pgpio 0x1000 GPIOs and I2C buses .. todo:: write me