iomuxc

Documentation

Overview

Package iomuxc implements helpers for IOMUX configuration on NXP SoCs.

This package is only meant to be used with `GOOS=tamago GOARCH=arm` as supported by the TamaGo framework for bare metal Go on ARM SoCs, see https://github.com/usbarmory/tamago.

Index

• Constants
• type Pad
  • func Init(mux uint32, pad uint32, mode uint32) (p *Pad)
  • func (pad *Pad) Ctl(ctl uint32)
  • func (pad *Pad) Mode(mode uint32)
  • func (pad *Pad) Select(input uint32)
  • func (pad *Pad) SoftwareInput(enabled bool)

Constants

const (
	SW_PAD_CTL_HYS = 16

	SW_PAD_CTL_PUS                = 14
	SW_PAD_CTL_PUS_PULL_DOWN_100K = 0b00
	SW_PAD_CTL_PUS_PULL_UP_47K    = 0b01
	SW_PAD_CTL_PUS_PULL_UP_100K   = 0b10
	SW_PAD_CTL_PUS_PULL_UP_22K    = 0b11

	SW_PAD_CTL_PUE = 13
	SW_PAD_CTL_PKE = 12
	SW_PAD_CTL_ODE = 11

	SW_PAD_CTL_SPEED        = 6
	SW_PAD_CTL_SPEED_50MHZ  = 0b00
	SW_PAD_CTL_SPEED_100MHZ = 0b10
	SW_PAD_CTL_SPEED_200MHZ = 0b11

	SW_PAD_CTL_DSE                        = 3
	SW_PAD_CTL_DSE_OUTPUT_DRIVER_DISABLED = 0b000
	SW_PAD_CTL_DSE_2_R0_2                 = 0b010
	SW_PAD_CTL_DSE_2_R0_3                 = 0b011
	SW_PAD_CTL_DSE_2_R0_4                 = 0b100
	SW_PAD_CTL_DSE_2_R0_5                 = 0b101
	SW_PAD_CTL_DSE_2_R0_6                 = 0b110
	SW_PAD_CTL_DSE_2_R0_7                 = 0b111

	SW_PAD_CTL_SRE = 0

	SW_MUX_CTL_SION     = 4
	SW_MUX_CTL_MUX_MODE = 0
)

IOMUXC registers

Types

type Pad

type Pad struct {
	// Mux register (e.g. IOMUXC_SW_MUX_CTL_PAD_*)
	Mux uint32
	// Pad register (e.g. IOMUXC_SW_PAD_CTL_PAD_*)
	Pad uint32
	// Daisy register (e.g. IOMUXC_*_SELECT_INPUT)
	Daisy uint32
}

Pad instance.

func Init

func Init(mux uint32, pad uint32, mode uint32) (p *Pad)

Init initializes a pad.

func (*Pad) Ctl

func (pad *Pad) Ctl(ctl uint32)

Ctl configures the pad control register.

func (*Pad) Mode

func (pad *Pad) Mode(mode uint32)

Mode configures the pad iomux mode.

func (*Pad) Select

func (pad *Pad) Select(input uint32)

Select configures the pad daisy chain register.

func (*Pad) SoftwareInput

func (pad *Pad) SoftwareInput(enabled bool)

SoftwareInput configures the pad SION bit.