Module rp2040_pac2::usb::regs[][src]

Structs

AddrEndp

Device address and endpoint control

AddrEndpX

Interrupt endpoint 15. Only valid for HOST mode.

BuffCpuShouldHandle

Which of the double buffers should be handled. Only valid if using an interrupt per buffer (i.e. not per 2 buffers). Not valid for host interrupt endpoint polling because they are only single buffered.

BuffStatus

Buffer status register. A bit set here indicates that a buffer has completed on the endpoint (if the buffer interrupt is enabled). It is possible for 2 buffers to be completed, so clearing the buffer status bit may instantly re set it on the next clock cycle.

EpAbort

Device only: Can be set to ignore the buffer control register for this endpoint in case you would like to revoke a buffer. A NAK will be sent for every access to the endpoint until this bit is cleared. A corresponding bit in EP_ABORT_DONE is set when it is safe to modify the buffer control register.

EpAbortDone

Device only: Used in conjunction with EP_ABORT. Set once an endpoint is idle so the programmer knows it is safe to modify the buffer control register.

EpStallArm

Device: this bit must be set in conjunction with the STALL bit in the buffer control register to send a STALL on EP0. The device controller clears these bits when a SETUP packet is received because the USB spec requires that a STALL condition is cleared when a SETUP packet is received.

EpStatusStallNak

Device: bits are set when the IRQ_ON_NAK or IRQ_ON_STALL bits are set. For EP0 this comes from SIE_CTRL. For all other endpoints it comes from the endpoint control register.

Int

Raw Interrupts

IntEpCtrl

interrupt endpoint control register

MainCtrl

Main control register

NakPoll

Used by the host controller. Sets the wait time in microseconds before trying again if the device replies with a NAK.

SieCtrl

SIE control register

SieStatus

SIE status register

SofRd

Read the last SOF (Start of Frame) frame number seen. In device mode the last SOF received from the host. In host mode the last SOF sent by the host.

SofWr

Set the SOF (Start of Frame) frame number in the host controller. The SOF packet is sent every 1ms and the host will increment the frame number by 1 each time.

UsbMuxing

Where to connect the USB controller. Should be to_phy by default.

UsbPwr

Overrides for the power signals in the event that the VBUS signals are not hooked up to GPIO. Set the value of the override and then the override enable to switch over to the override value.

UsbphyDirect

This register allows for direct control of the USB phy. Use in conjunction with usbphy_direct_override register to enable each override bit.

UsbphyDirectOverride

Override enable for each control in usbphy_direct

UsbphyTrim

Used to adjust trim values of USB phy pull down resistors.