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gpio consts #91

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merged 1 commit into from
Jul 29, 2019
Merged

gpio consts #91

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80 changes: 40 additions & 40 deletions src/gpio.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -212,18 +212,18 @@ macro_rules! gpio {
self,
cr: &mut $CR,
) -> $PXi<Alternate<PushPull>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Alternate function output push pull
let cnf = 0b10;
const CNF: u32 = 0b10;
// Output mode, max speed 50 MHz
let mode = 0b11;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b11;
const BITS: u32 = (CNF << 2) | MODE;

// input mode
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand All @@ -235,18 +235,18 @@ macro_rules! gpio {
self,
cr: &mut $CR,
) -> $PXi<Alternate<OpenDrain>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Alternate function output open drain
let cnf = 0b11;
const CNF: u32 = 0b11;
// Output mode, max speed 50 MHz
let mode = 0b11;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b11;
const BITS: u32 = (CNF << 2) | MODE;

// input mode
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand All @@ -257,18 +257,18 @@ macro_rules! gpio {
self,
cr: &mut $CR,
) -> $PXi<Input<Floating>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Floating input
let cnf = 0b01;
const CNF: u32 = 0b01;
// Input mode
let mode = 0b00;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b00;
const BITS: u32 = (CNF << 2) | MODE;

// input mode
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand All @@ -279,12 +279,12 @@ macro_rules! gpio {
self,
cr: &mut $CR,
) -> $PXi<Input<PullDown>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Pull up/down input
let cnf = 0b10;
const CNF: u32 = 0b10;
// Input mode
let mode = 0b00;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b00;
const BITS: u32 = (CNF << 2) | MODE;

//pull down:
// NOTE(unsafe) atomic write to a stateless register
Expand All @@ -294,7 +294,7 @@ macro_rules! gpio {
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand All @@ -305,12 +305,12 @@ macro_rules! gpio {
self,
cr: &mut $CR,
) -> $PXi<Input<PullUp>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Pull up/down input
let cnf = 0b10;
const CNF: u32 = 0b10;
// Input mode
let mode = 0b00;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b00;
const BITS: u32 = (CNF << 2) | MODE;

//pull up:
// NOTE(unsafe) atomic write to a stateless register
Expand All @@ -320,7 +320,7 @@ macro_rules! gpio {
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand All @@ -342,12 +342,12 @@ macro_rules! gpio {
cr: &mut $CR,
initial_state: State,
) -> $PXi<Output<OpenDrain>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// General purpose output open-drain
let cnf = 0b01;
const CNF: u32 = 0b01;
// Open-Drain Output mode, max speed 50 MHz
let mode = 0b11;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b11;
const BITS: u32 = (CNF << 2) | MODE;

let mut res = $PXi { _mode: PhantomData };

Expand All @@ -359,7 +359,7 @@ macro_rules! gpio {
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

res
Expand All @@ -380,12 +380,12 @@ macro_rules! gpio {
cr: &mut $CR,
initial_state: State,
) -> $PXi<Output<PushPull>> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// General purpose output push-pull
let cnf = 0b00;
const CNF: u32 = 0b00;
// Output mode, max speed 50 MHz
let mode = 0b11;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b11;
const BITS: u32 = (CNF << 2) | MODE;

let mut res = $PXi { _mode: PhantomData };

Expand All @@ -397,26 +397,26 @@ macro_rules! gpio {
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

res
}

/// Configures the pin to operate as an analog input pin
pub fn into_analog(self, cr: &mut $CR) -> $PXi<Analog> {
let offset = (4 * $i) % 32;
const OFFSET: u32 = (4 * $i) % 32;
// Analog input
let cnf = 0b00;
const CNF: u32 = 0b00;
// Input mode
let mode = 0b00;
let bits = (cnf << 2) | mode;
const MODE: u32 = 0b00;
const BITS: u32 = (CNF << 2) | MODE;

// analog mode
cr
.cr()
.modify(|r, w| unsafe {
w.bits((r.bits() & !(0b1111 << offset)) | (bits << offset))
w.bits((r.bits() & !(0b1111 << OFFSET)) | (BITS << OFFSET))
});

$PXi { _mode: PhantomData }
Expand Down