2f1f8fb075
It is always implemented exactly the same way (as an uint8) so there is no reason to implement it in each target separately. This also makes it easier to add some documentation to it.
283 строки
4,9 КиБ
Go
283 строки
4,9 КиБ
Go
// Derivative work of Teensyduino Core Library
|
|
// http://www.pjrc.com/teensy/
|
|
// Copyright (c) 2017 PJRC.COM, LLC.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// 1. The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// 2. If the Software is incorporated into a build system that allows
|
|
// selection among a list of target devices, then similar target
|
|
// devices manufactured by PJRC.COM must be included in the list of
|
|
// target devices and selectable in the same manner.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
// +build nxp,mk66f18
|
|
|
|
package machine
|
|
|
|
import (
|
|
"device/nxp"
|
|
"runtime/volatile"
|
|
"unsafe"
|
|
)
|
|
|
|
const (
|
|
PinInput PinMode = iota
|
|
PinInputPullUp
|
|
PinInputPullDown
|
|
PinOutput
|
|
PinOutputOpenDrain
|
|
PinDisable
|
|
)
|
|
|
|
const (
|
|
PA00 Pin = iota
|
|
PA01
|
|
PA02
|
|
PA03
|
|
PA04
|
|
PA05
|
|
PA06
|
|
PA07
|
|
PA08
|
|
PA09
|
|
PA10
|
|
PA11
|
|
PA12
|
|
PA13
|
|
PA14
|
|
PA15
|
|
PA16
|
|
PA17
|
|
PA18
|
|
PA19
|
|
PA20
|
|
PA21
|
|
PA22
|
|
PA23
|
|
PA24
|
|
PA25
|
|
PA26
|
|
PA27
|
|
PA28
|
|
PA29
|
|
)
|
|
|
|
const (
|
|
PB00 Pin = iota + 32
|
|
PB01
|
|
PB02
|
|
PB03
|
|
PB04
|
|
PB05
|
|
PB06
|
|
PB07
|
|
PB08
|
|
PB09
|
|
PB10
|
|
PB11
|
|
_
|
|
_
|
|
_
|
|
_
|
|
PB16
|
|
PB17
|
|
PB18
|
|
PB19
|
|
PB20
|
|
PB21
|
|
PB22
|
|
PB23
|
|
)
|
|
|
|
const (
|
|
PC00 Pin = iota + 64
|
|
PC01
|
|
PC02
|
|
PC03
|
|
PC04
|
|
PC05
|
|
PC06
|
|
PC07
|
|
PC08
|
|
PC09
|
|
PC10
|
|
PC11
|
|
PC12
|
|
PC13
|
|
PC14
|
|
PC15
|
|
PC16
|
|
PC17
|
|
PC18
|
|
PC19
|
|
)
|
|
|
|
const (
|
|
PD00 Pin = iota + 96
|
|
PD01
|
|
PD02
|
|
PD03
|
|
PD04
|
|
PD05
|
|
PD06
|
|
PD07
|
|
PD08
|
|
PD09
|
|
PD10
|
|
PD11
|
|
PD12
|
|
PD13
|
|
PD14
|
|
PD15
|
|
)
|
|
|
|
const (
|
|
PE00 Pin = iota + 128
|
|
PE01
|
|
PE02
|
|
PE03
|
|
PE04
|
|
PE05
|
|
PE06
|
|
PE07
|
|
PE08
|
|
PE09
|
|
PE10
|
|
PE11
|
|
PE12
|
|
PE13
|
|
PE14
|
|
PE15
|
|
PE16
|
|
PE17
|
|
PE18
|
|
PE19
|
|
PE20
|
|
PE21
|
|
PE22
|
|
PE23
|
|
PE24
|
|
PE25
|
|
PE26
|
|
PE27
|
|
PE28
|
|
)
|
|
|
|
//go:inline
|
|
func (p Pin) reg() (*nxp.GPIO_Type, *volatile.Register32, uint8) {
|
|
var gpio *nxp.GPIO_Type
|
|
var pcr *nxp.PORT_Type
|
|
|
|
switch p / 32 {
|
|
case 0:
|
|
gpio, pcr = nxp.GPIOA, nxp.PORTA
|
|
case 1:
|
|
gpio, pcr = nxp.GPIOB, nxp.PORTB
|
|
case 2:
|
|
gpio, pcr = nxp.GPIOC, nxp.PORTC
|
|
case 3:
|
|
gpio, pcr = nxp.GPIOD, nxp.PORTD
|
|
case 5:
|
|
gpio, pcr = nxp.GPIOE, nxp.PORTE
|
|
default:
|
|
panic("invalid pin number")
|
|
}
|
|
|
|
return gpio, &(*[32]volatile.Register32)(unsafe.Pointer(pcr))[p%32], uint8(p % 32)
|
|
}
|
|
|
|
// Configure this pin with the given configuration.
|
|
func (p Pin) Configure(config PinConfig) {
|
|
gpio, pcr, pos := p.reg()
|
|
|
|
switch config.Mode {
|
|
case PinOutput:
|
|
gpio.PDDR.SetBits(1 << pos)
|
|
pcr.Set((1 << nxp.PORT_PCR0_MUX_Pos) | nxp.PORT_PCR0_SRE | nxp.PORT_PCR0_DSE)
|
|
|
|
case PinOutputOpenDrain:
|
|
gpio.PDDR.SetBits(1 << pos)
|
|
pcr.Set((1 << nxp.PORT_PCR0_MUX_Pos) | nxp.PORT_PCR0_SRE | nxp.PORT_PCR0_DSE | nxp.PORT_PCR0_ODE)
|
|
|
|
case PinInput:
|
|
gpio.PDDR.ClearBits(1 << pos)
|
|
pcr.Set((1 << nxp.PORT_PCR0_MUX_Pos))
|
|
|
|
case PinInputPullUp:
|
|
gpio.PDDR.ClearBits(1 << pos)
|
|
pcr.Set((1 << nxp.PORT_PCR0_MUX_Pos) | nxp.PORT_PCR0_PE | nxp.PORT_PCR0_PS)
|
|
|
|
case PinInputPullDown:
|
|
gpio.PDDR.ClearBits(1 << pos)
|
|
pcr.Set((1 << nxp.PORT_PCR0_MUX_Pos) | nxp.PORT_PCR0_PE)
|
|
|
|
case PinDisable:
|
|
gpio.PDDR.ClearBits(1 << pos)
|
|
pcr.Set((0 << nxp.PORT_PCR0_MUX_Pos))
|
|
}
|
|
}
|
|
|
|
// Set changes the value of the GPIO pin. The pin must be configured as output.
|
|
func (p Pin) Set(value bool) {
|
|
gpio, _, pos := p.reg()
|
|
if value {
|
|
gpio.PSOR.Set(1 << pos)
|
|
} else {
|
|
gpio.PCOR.Set(1 << pos)
|
|
}
|
|
}
|
|
|
|
// Get returns the current value of a GPIO pin.
|
|
func (p Pin) Get() bool {
|
|
gpio, _, pos := p.reg()
|
|
return gpio.PDIR.HasBits(1 << pos)
|
|
}
|
|
|
|
func (p Pin) Control() *volatile.Register32 {
|
|
_, pcr, _ := p.reg()
|
|
return pcr
|
|
}
|
|
|
|
func (p Pin) Fast() FastPin {
|
|
gpio, _, pos := p.reg()
|
|
return FastPin{
|
|
PDOR: gpio.PDOR.Bit(pos),
|
|
PSOR: gpio.PSOR.Bit(pos),
|
|
PCOR: gpio.PCOR.Bit(pos),
|
|
PTOR: gpio.PTOR.Bit(pos),
|
|
PDIR: gpio.PDIR.Bit(pos),
|
|
PDDR: gpio.PDDR.Bit(pos),
|
|
}
|
|
}
|
|
|
|
type FastPin struct {
|
|
PDOR *volatile.BitRegister
|
|
PSOR *volatile.BitRegister
|
|
PCOR *volatile.BitRegister
|
|
PTOR *volatile.BitRegister
|
|
PDIR *volatile.BitRegister
|
|
PDDR *volatile.BitRegister
|
|
}
|
|
|
|
func (p FastPin) Set() { p.PSOR.Set(true) }
|
|
func (p FastPin) Clear() { p.PCOR.Set(true) }
|
|
func (p FastPin) Toggle() { p.PTOR.Set(true) }
|
|
func (p FastPin) Write(v bool) { p.PDOR.Set(v) }
|
|
func (p FastPin) Read() bool { return p.PDIR.Get() }
|