use crate::rcc::AHB;
use bobbin_bits::*;
use core::intrinsics::transmute;
use core::marker::PhantomData;
#[allow(deprecated)]
use hal::digital::{toggleable, v2, InputPin, OutputPin, StatefulOutputPin};
pub trait GPIOPin {
fn group(&self) -> Group;
fn index(&self) -> u8;
}
pub trait PinMode {
fn pin_mode() -> U2;
}
pub struct Input;
impl PinMode for Input {
fn pin_mode() -> U2 {
U2::B00
}
}
pub struct Output<OT: OutputType, OS: OutputSpeed> {
_output_mode: PhantomData<OT>,
_output_speed: PhantomData<OS>,
}
impl<OT: OutputType, OS: OutputSpeed> PinMode for Output<OT, OS> {
fn pin_mode() -> U2 {
U2::B01
}
}
pub struct AltFn<AN: AltFnNum, OT: OutputType, OS: OutputSpeed> {
_afnum: PhantomData<AN>,
_output_mode: PhantomData<OT>,
_output_speed: PhantomData<OS>,
}
impl<AN: AltFnNum, OT: OutputType, OS: OutputSpeed> PinMode
for AltFn<AN, OT, OS>
{
fn pin_mode() -> U2 {
U2::B10
}
}
pub struct Analog;
impl PinMode for Analog {
fn pin_mode() -> U2 {
U2::B11
}
}
pub trait PullType {
fn pull_type(&self) -> U2;
}
pub struct PullNone;
impl PullType for PullNone {
fn pull_type(&self) -> U2 {
U2::B00
}
}
pub struct PullUp;
impl PullType for PullUp {
fn pull_type(&self) -> U2 {
U2::B01
}
}
pub struct PullDown;
impl PullType for PullDown {
fn pull_type(&self) -> U2 {
U2::B10
}
}
pub struct PullReserved;
impl PullType for PullReserved {
fn pull_type(&self) -> U2 {
U2::B11
}
}
pub trait OutputSpeed {
fn output_speed(&self) -> U2;
}
pub struct LowSpeed;
impl OutputSpeed for LowSpeed {
fn output_speed(&self) -> U2 {
U2::B00
}
}
pub struct MediumSpeed;
impl OutputSpeed for MediumSpeed {
fn output_speed(&self) -> U2 {
U2::B01
}
}
pub struct FastSpeed;
impl OutputSpeed for FastSpeed {
fn output_speed(&self) -> U2 {
U2::B10
}
}
pub struct HighSpeed;
impl OutputSpeed for HighSpeed {
fn output_speed(&self) -> U2 {
U2::B11
}
}
pub trait OutputType {
fn output_type(&self) -> U1;
}
pub struct PushPull;
impl OutputType for PushPull {
fn output_type(&self) -> U1 {
U1::B0
}
}
pub struct OpenDrain;
impl OutputType for OpenDrain {
fn output_type(&self) -> U1 {
U1::B1
}
}
pub trait AltFnNum {
fn alt_fn_num(&self) -> U4;
}
macro_rules! gen_af {
([$(($af:ident, $bit:ident)) , +]) => {
$(
pub struct $af;
impl AltFnNum for $af {
fn alt_fn_num(&self) -> U4 {
U4::$bit
}
}
)+
}
}
gen_af!([(AF0, B0000),
(AF1, B0001),
(AF2, B0010),
(AF3, B0011),
(AF4, B0100),
(AF5, B0101),
(AF6, B0110),
(AF7, B0111),
(AF8, B1000),
(AF9, B1001),
(AF10, B1010),
(AF11, B1011),
(AF12, B1100),
(AF13, B1101),
(AF14, B1110),
(AF15, B1111)]);
pub trait GpioExt {
type Ports;
fn split(self, ahb: &mut AHB) -> Self::Ports;
}
macro_rules! gpio {
($GPIOX:ident, $Gpiox:ident, $gpiox:ident, $iopxenr:ident, $iopxrst:ident, $group: ident, $PXx:ident, [
$($PXi:ident: ($pxi:ident, $i:expr, $AFR:ident),)+
]) => {
use crate::pac::$GPIOX;
pub struct $Gpiox {
$(
pub $pxi: $PXi<PullNone, Input>,
)+
}
impl GpioExt for $GPIOX {
type Ports = $Gpiox;
fn split(self, ahb: &mut AHB) -> Self::Ports {
ahb.enr().modify(|_, w| w.$iopxenr().enabled());
ahb.rstr().modify(|_, w| w.$iopxrst().set_bit());
ahb.rstr().modify(|_, w| w.$iopxrst().clear_bit());
$Gpiox {
$(
$pxi: $PXi {
_pullup_state: PhantomData,
_pin_mode: PhantomData
},
)+
}
}
}
impl $Gpiox {
fn set_pin_mode<PM: PinMode>(index: u32) {
let offset = 2 * index;
let mode_bits:u32 = PM::pin_mode().into();
let moder = unsafe { &(*$GPIOX::ptr()).moder };
moder.modify(|r, w| unsafe {
w.bits((r.bits()
& !(0b11 << offset))
| (mode_bits << offset))
});
}
fn set_output_speed<OS: OutputSpeed>(index: u32, os: OS) {
let offset = 2 * index;
let ospeedr = unsafe { &(*$GPIOX::ptr()).ospeedr };
let speed_bits:u32 = os.output_speed().into();
ospeedr.modify(|r, w| unsafe {
w.bits((r.bits()
& !(0b11 << offset))
| (speed_bits << offset))
});
}
fn set_output_type<OT: OutputType>(index: u32, ot: OT) {
let otyper = unsafe { &(*$GPIOX::ptr()).otyper };
let type_bits:u32 = ot.output_type().into();
otyper.modify(|r, w| unsafe {
w.bits(r.bits() | (type_bits << index))
});
}
}
pub struct $PXx<PT: PullType, PM: PinMode> {
i: u8,
_pullup_state: PhantomData<PT>,
_pin_mode: PhantomData<PM>
}
#[allow(deprecated)]
impl<PT: PullType, OT: OutputType, OS: OutputSpeed>
OutputPin for $PXx<PT, Output<OT, OS>> {
fn set_high(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << self.i)) }
}
fn set_low(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << (16 + self.i))) }
}
}
#[allow(deprecated)]
impl<PT: PullType,
AN: AltFnNum,
OT: OutputType,
OS: OutputSpeed> OutputPin for $PXx<PT, AltFn<AN, OT, OS>> {
fn set_high(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << self.i)) }
}
fn set_low(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << (16 + self.i))) }
}
}
#[allow(deprecated)]
impl<PT: PullType> InputPin for $PXx<PT, Input> {
fn is_high(&self) -> bool {
!self.is_low()
}
fn is_low(&self) -> bool {
unsafe { (*$GPIOX::ptr()).idr.read().bits() & (1 << self.i) == 0 }
}
}
$(
pub struct $PXi<PT: PullType, PM: PinMode> {
_pullup_state: PhantomData<PT>,
_pin_mode: PhantomData<PM>
}
impl <PT: PullType, PM: PinMode> GPIOPin for $PXi<PT, PM> {
fn group(&self) -> Group {
Group::$group
}
fn index(&self) -> u8 {
$i
}
}
impl<PT: PullType, PM: PinMode> $PXi<PT, PM> {
pub fn downgrade(self) -> $PXx<PT, PM> {
$PXx {
i: $i,
_pullup_state: PhantomData,
_pin_mode: PhantomData
}
}
pub fn pull_type<NPT: PullType>(self, pt: NPT)
-> $PXi<NPT, PM>
{
let shift = 0 + ($i << 1);
let pupdr = unsafe { &(*$GPIOX::ptr()).pupdr };
let pd_bits:u32 = pt.pull_type().into();
pupdr.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b11 << shift))
| (pd_bits << shift))
});
unsafe { transmute(self) }
}
pub fn input(self) -> $PXi<PT, Input> {
$Gpiox::set_pin_mode::<Input>($i);
unsafe { transmute(self) }
}
pub fn analog(self) -> $PXi<PT, Analog> {
$Gpiox::set_pin_mode::<Analog>($i);
unsafe { transmute(self) }
}
pub fn output(self) -> $PXi<PT, Output<PushPull, LowSpeed>> {
let result: $PXi<PT, Output<PushPull, LowSpeed>> =
unsafe { transmute(self) };
let result2 = result
.output_type(PushPull)
.output_speed(LowSpeed);
$Gpiox::set_pin_mode::<Output<PushPull, LowSpeed>>($i);
result2
}
pub fn alternating<AFN: AltFnNum>(self, af: AFN) -> $PXi<PT, AltFn<AFN, PushPull, LowSpeed>> {
let result: $PXi<PT, AltFn<AFN, PushPull, LowSpeed>> =
unsafe { transmute(self) };
let result2 = result
.alt_fn(af)
.output_type(PushPull)
.output_speed(LowSpeed);
$Gpiox::set_pin_mode::<AltFn<AFN, PushPull, LowSpeed>>($i);
result2
}
}
impl<PT: PullType, OT: OutputType, OS: OutputSpeed> $PXi<PT, Output<OT, OS>> {
pub fn output_type<NOT: OutputType>(self, ot: NOT) -> $PXi<PT, Output<NOT, OS>> {
$Gpiox::set_output_type($i, ot);
unsafe { transmute(self) }
}
pub fn push_pull(self) -> $PXi<PT, Output<PushPull, OS>> {
self.output_type(PushPull)
}
pub fn open_drain(self) -> $PXi<PT, Output<OpenDrain, OS>> {
self.output_type(OpenDrain)
}
pub fn output_speed<NOS: OutputSpeed>(self, os: NOS) -> $PXi<PT, Output<OT, NOS>> {
$Gpiox::set_output_speed($i, os);
unsafe { transmute(self) }
}
}
impl<PT: PullType, AFN: AltFnNum, OT: OutputType, OS: OutputSpeed> $PXi<PT, AltFn<AFN, OT, OS>> {
pub fn output_type<NOT: OutputType>(self, ot: NOT) -> $PXi<PT, AltFn<AFN, NOT, OS>> {
$Gpiox::set_output_type($i, ot);
unsafe { transmute(self) }
}
pub fn output_speed<NOS: OutputSpeed>(self, os: NOS) -> $PXi<PT, AltFn<AFN, OT, NOS>> {
$Gpiox::set_output_speed($i, os);
unsafe { transmute(self) }
}
pub fn alt_fn<NAFN: AltFnNum>(self, af: NAFN) -> $PXi<PT, AltFn<NAFN, OT, OS>> {
let index = $i & (8 - 1);
let shift: usize = 0 + (index << 2);
let af_bits: u32 = af.alt_fn_num().into();
let afr = unsafe { &(*$GPIOX::ptr()).$AFR };
afr.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << shift))
| (af_bits << shift))
});
unsafe { transmute(self) }
}
}
#[allow(deprecated)]
impl<PT: PullType, OT:OutputType, OS:OutputSpeed> OutputPin
for $PXi<PT, Output<OT, OS>> {
fn set_high(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << $i)) }
}
fn set_low(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << (16 + $i))) }
}
}
#[allow(deprecated)]
impl<PT: PullType, AN: AltFnNum, OT:OutputType, OS:OutputSpeed> OutputPin
for $PXi<PT, AltFn<AN, OT, OS>> {
fn set_high(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << $i)) }
}
fn set_low(&mut self) {
unsafe { (*$GPIOX::ptr()).bsrr.write(|w| w.bits(1 << (16 + $i))) }
}
}
#[allow(deprecated)]
impl<PT: PullType, OT:OutputType, OS:OutputSpeed> StatefulOutputPin
for $PXi<PT, Output<OT, OS>> {
fn is_set_high(&self) -> bool {
!self.is_set_low()
}
fn is_set_low(&self) -> bool {
unsafe { (*$GPIOX::ptr()).odr.read().bits() & (1 << $i) == 0 }
}
}
#[allow(deprecated)]
impl<PT: PullType, OT:OutputType, OS:OutputSpeed> toggleable::Default
for $PXi<PT, Output<OT, OS>> {}
impl<PT: PullType, OT:OutputType, OS:OutputSpeed> v2::toggleable::Default
for $PXi<PT, Output<OT, OS>> {}
#[allow(deprecated)]
impl<PT: PullType> InputPin for $PXi<PT, Input> {
fn is_high(&self) -> bool {
!self.is_low()
}
fn is_low(&self) -> bool {
unsafe { (*$GPIOX::ptr()).idr.read().bits() & (1 << $i) == 0 }
}
}
)+
}
}
pub enum Group {
A,
B,
C,
D,
E,
F,
G,
}
gpio!(GPIOA, Gpioa, gpioa, iopaen, ioparst, A, PAx, [
PA0: (pa0, 0, afrl),
PA1: (pa1, 1, afrl),
PA2: (pa2, 2, afrl),
PA3: (pa3, 3, afrl),
PA4: (pa4, 4, afrl),
PA5: (pa5, 5, afrl),
PA6: (pa6, 6, afrl),
PA7: (pa7, 7, afrl),
PA8: (pa8, 8, afrh),
PA9: (pa9, 9, afrh),
PA10: (pa10, 10, afrh),
PA11: (pa11, 11, afrh),
PA12: (pa12, 12, afrh),
PA13: (pa13, 13, afrh),
PA14: (pa14, 14, afrh),
PA15: (pa15, 15, afrh),
]);
gpio!(GPIOB, Gpiob, gpiob, iopben, iopbrst, B, PBx, [
PB0: (pb0, 0, afrl),
PB1: (pb1, 1, afrl),
PB2: (pb2, 2, afrl),
PB3: (pb3, 3, afrl),
PB4: (pb4, 4, afrl),
PB5: (pb5, 5, afrl),
PB6: (pb6, 6, afrl),
PB7: (pb7, 7, afrl),
PB8: (pb8, 8, afrh),
PB9: (pb9, 9, afrh),
PB10: (pb10, 10, afrh),
PB11: (pb11, 11, afrh),
PB12: (pb12, 12, afrh),
PB13: (pb13, 13, afrh),
PB14: (pb14, 14, afrh),
PB15: (pb15, 15, afrh),
]);
gpio!(GPIOC, Gpioc, gpioc, iopcen, iopcrst, C, PCx, [
PC0: (pc0, 0, afrl),
PC1: (pc1, 1, afrl),
PC2: (pc2, 2, afrl),
PC3: (pc3, 3, afrl),
PC4: (pc4, 4, afrl),
PC5: (pc5, 5, afrl),
PC6: (pc6, 6, afrl),
PC7: (pc7, 7, afrl),
PC8: (pc8, 8, afrh),
PC9: (pc9, 9, afrh),
PC10: (pc10, 10, afrh),
PC11: (pc11, 11, afrh),
PC12: (pc12, 12, afrh),
PC13: (pc13, 13, afrh),
PC14: (pc14, 14, afrh),
PC15: (pc15, 15, afrh),
]);
gpio!(GPIOD, Gpiod, gpiod, iopden, iopdrst, D, PDx, [
PD0: (pd0, 0, afrl),
PD1: (pd1, 1, afrl),
PD2: (pd2, 2, afrl),
PD3: (pd3, 3, afrl),
PD4: (pd4, 4, afrl),
PD5: (pd5, 5, afrl),
PD6: (pd6, 6, afrl),
PD7: (pd7, 7, afrl),
PD8: (pd8, 8, afrh),
PD9: (pd9, 9, afrh),
PD10: (pd10, 10, afrh),
PD11: (pd11, 11, afrh),
PD12: (pd12, 12, afrh),
PD13: (pd13, 13, afrh),
PD14: (pd14, 14, afrh),
PD15: (pd15, 15, afrh),
]);
gpio!(GPIOE, Gpioe, gpioe, iopeen, ioperst, E, PEx, [
PE0: (pe0, 0, afrl),
PE1: (pe1, 1, afrl),
PE2: (pe2, 2, afrl),
PE3: (pe3, 3, afrl),
PE4: (pe4, 4, afrl),
PE5: (pe5, 5, afrl),
PE6: (pe6, 6, afrl),
PE7: (pe7, 7, afrl),
PE8: (pe8, 8, afrh),
PE9: (pe9, 9, afrh),
PE10: (pe10, 10, afrh),
PE11: (pe11, 11, afrh),
PE12: (pe12, 12, afrh),
PE13: (pe13, 13, afrh),
PE14: (pe14, 14, afrh),
PE15: (pe15, 15, afrh),
]);
gpio!(GPIOF, Gpiof, gpiof, iopfen, iopfrst, F, PFx, [
PF0: (pf0, 0, afrl),
PF1: (pf1, 1, afrl),
PF2: (pf2, 2, afrl),
PF4: (pf3, 4, afrl),
PF6: (pf6, 6, afrl),
PF9: (pf9, 9, afrh),
PF10: (pf10, 10, afrh),
]);