diff --git a/Cargo.toml b/Cargo.toml
index 66b0d43..87a77a2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,8 +14,7 @@ categories = ["embedded", "no-std"]
 nb = "0.1"
 
 [dependencies.embedded-hal]
-version = "0.2.3"
-features = ["unproven"]
+version = "=1.0.0-alpha.1"
 
 [dev-dependencies.stm32f1xx-hal]
 version = "0.5.3"
diff --git a/examples/i2c-eeprom24x.rs b/examples/i2c-eeprom24x.rs
index 2f3448e..e122da5 100644
--- a/examples/i2c-eeprom24x.rs
+++ b/examples/i2c-eeprom24x.rs
@@ -41,13 +41,13 @@ fn main() -> ! {
     for addr in addrs.iter() {
         eeprom.write_byte(*addr, byte).unwrap();
         // need to wait before next write
-        block!(delay.wait()).ok();
+        block!(delay.try_wait()).ok();
     }
 
     loop {
         for addr in addrs.iter() {
             let _ = eeprom.read_byte(*addr).unwrap();
-            block!(delay.wait()).ok();
+            block!(delay.try_wait()).ok();
         }
     }
 }
diff --git a/examples/serial.rs b/examples/serial.rs
index f40e105..c32e4b7 100644
--- a/examples/serial.rs
+++ b/examples/serial.rs
@@ -36,7 +36,7 @@ fn main() -> ! {
 
     loop {
         for byte in b"Hello, World!\r\n" {
-            block!(serial.write(*byte)).unwrap();
+            block!(serial.try_write(*byte)).unwrap();
         }
 
         delay.delay_ms(1000u16);
diff --git a/src/i2c.rs b/src/i2c.rs
index 690a87b..66121f9 100644
--- a/src/i2c.rs
+++ b/src/i2c.rs
@@ -50,8 +50,7 @@
   ```
 */
 
-use embedded_hal::blocking::i2c::{Read, Write, WriteRead};
-use embedded_hal::digital::v2::{InputPin, OutputPin};
+use embedded_hal::digital::{InputPin, OutputPin};
 use embedded_hal::timer::{CountDown, Periodic};
 use nb::block;
 
@@ -118,7 +117,7 @@ where
         self.set_scl_high()?;
         self.wait_for_clk();
 
-        let ack = self.sda.is_low().map_err(Error::Bus)?;
+        let ack = self.sda.try_is_low().map_err(Error::Bus)?;
 
         self.set_scl_low()?;
         self.set_sda_low()?;
@@ -136,7 +135,7 @@ where
             self.set_scl_high()?;
             self.wait_for_clk();
 
-            if self.sda.is_high().map_err(Error::Bus)? {
+            if self.sda.try_is_high().map_err(Error::Bus)? {
                 byte |= 1 << (7 - bit_offset);
             }
 
@@ -201,27 +200,27 @@ where
 
     #[inline]
     fn set_scl_high(&mut self) -> Result<(), crate::i2c::Error<E>> {
-        self.scl.set_high().map_err(Error::Bus)
+        self.scl.try_set_high().map_err(Error::Bus)
     }
 
     #[inline]
     fn set_scl_low(&mut self) -> Result<(), crate::i2c::Error<E>> {
-        self.scl.set_low().map_err(Error::Bus)
+        self.scl.try_set_low().map_err(Error::Bus)
     }
 
     #[inline]
     fn set_sda_high(&mut self) -> Result<(), crate::i2c::Error<E>> {
-        self.sda.set_high().map_err(Error::Bus)
+        self.sda.try_set_high().map_err(Error::Bus)
     }
 
     #[inline]
     fn set_sda_low(&mut self) -> Result<(), crate::i2c::Error<E>> {
-        self.sda.set_low().map_err(Error::Bus)
+        self.sda.try_set_low().map_err(Error::Bus)
     }
 
     #[inline]
     fn wait_for_clk(&mut self) {
-        block!(self.clk.wait()).ok();
+        block!(self.clk.try_wait()).ok();
     }
 
     #[inline]
@@ -242,7 +241,7 @@ where
 {
     type Error = crate::i2c::Error<E>;
 
-    fn write(&mut self, addr: u8, output: &[u8]) -> Result<(), Self::Error> {
+    fn try_write(&mut self, addr: u8, output: &[u8]) -> Result<(), Self::Error> {
         if output.is_empty() {
             return Ok(());
         }
@@ -269,7 +268,7 @@ where
 {
     type Error = crate::i2c::Error<E>;
 
-    fn read(&mut self, addr: u8, input: &mut [u8]) -> Result<(), Self::Error> {
+    fn try_read(&mut self, addr: u8, input: &mut [u8]) -> Result<(), Self::Error> {
         if input.is_empty() {
             return Ok(());
         }
@@ -296,7 +295,7 @@ where
 {
     type Error = crate::i2c::Error<E>;
 
-    fn write_read(&mut self, addr: u8, output: &[u8], input: &mut [u8]) -> Result<(), Self::Error> {
+    fn try_write_read(&mut self, addr: u8, output: &[u8], input: &mut [u8]) -> Result<(), Self::Error> {
         if output.is_empty() || input.is_empty() {
             return Err(Error::InvalidData);
         }
diff --git a/src/serial.rs b/src/serial.rs
index 51b1e6b..c974391 100644
--- a/src/serial.rs
+++ b/src/serial.rs
@@ -8,7 +8,7 @@
 //! The timer must be configured to twice the desired communication frequency.
 //!
 
-use embedded_hal::digital::v2::{InputPin, OutputPin};
+use embedded_hal::digital::{InputPin, OutputPin};
 use embedded_hal::serial;
 use embedded_hal::timer::{CountDown, Periodic};
 use nb::block;
@@ -45,7 +45,7 @@ where
 
     #[inline]
     fn wait_for_timer(&mut self) {
-        block!(self.timer.wait()).ok();
+        block!(self.timer.try_wait()).ok();
     }
 }
 
@@ -57,25 +57,25 @@ where
 {
     type Error = crate::serial::Error<E>;
 
-    fn write(&mut self, byte: u8) -> nb::Result<(), Self::Error> {
+    fn try_write(&mut self, byte: u8) -> nb::Result<(), Self::Error> {
         let mut data_out = byte;
-        self.tx.set_low().map_err(Error::Bus)?; // start bit
+        self.tx.try_set_low().map_err(Error::Bus)?; // start bit
         self.wait_for_timer();
         for _bit in 0..8 {
             if data_out & 1 == 1 {
-                self.tx.set_high().map_err(Error::Bus)?;
+                self.tx.try_set_high().map_err(Error::Bus)?;
             } else {
-                self.tx.set_low().map_err(Error::Bus)?;
+                self.tx.try_set_low().map_err(Error::Bus)?;
             }
             data_out >>= 1;
             self.wait_for_timer();
         }
-        self.tx.set_high().map_err(Error::Bus)?; // stop bit
+        self.tx.try_set_high().map_err(Error::Bus)?; // stop bit
         self.wait_for_timer();
         Ok(())
     }
 
-    fn flush(&mut self) -> nb::Result<(), Self::Error> {
+    fn try_flush(&mut self) -> nb::Result<(), Self::Error> {
         Ok(())
     }
 }
@@ -88,14 +88,14 @@ where
 {
     type Error = crate::serial::Error<E>;
 
-    fn read(&mut self) -> nb::Result<u8, Self::Error> {
+    fn try_read(&mut self) -> nb::Result<u8, Self::Error> {
         let mut data_in = 0;
         // wait for start bit
-        while self.rx.is_high().map_err(Error::Bus)? {}
+        while self.rx.try_is_high().map_err(Error::Bus)? {}
         self.wait_for_timer();
         for _bit in 0..8 {
             data_in <<= 1;
-            if self.rx.is_high().map_err(Error::Bus)? {
+            if self.rx.try_is_high().map_err(Error::Bus)? {
                 data_in |= 1
             }
             self.wait_for_timer();
diff --git a/src/spi.rs b/src/spi.rs
index 3ee9dc3..264066d 100644
--- a/src/spi.rs
+++ b/src/spi.rs
@@ -15,7 +15,7 @@
 
 pub use embedded_hal::spi::{MODE_0, MODE_1, MODE_2, MODE_3};
 
-use embedded_hal::digital::v2::{InputPin, OutputPin};
+use embedded_hal::digital::{InputPin, OutputPin};
 use embedded_hal::spi::{FullDuplex, Mode, Polarity};
 use embedded_hal::timer::{CountDown, Periodic};
 use nb::block;
@@ -83,8 +83,8 @@ where
         };
 
         match mode.polarity {
-            Polarity::IdleLow => spi.sck.set_low(),
-            Polarity::IdleHigh => spi.sck.set_high(),
+            Polarity::IdleLow => spi.sck.try_set_low(),
+            Polarity::IdleHigh => spi.sck.try_set_high(),
         }
         .unwrap_or(());
 
@@ -97,7 +97,7 @@ where
     }
 
     fn read_bit(&mut self) -> nb::Result<(), crate::spi::Error<E>> {
-        let is_miso_high = self.miso.is_high().map_err(Error::Bus)?;
+        let is_miso_high = self.miso.try_is_high().map_err(Error::Bus)?;
         let shifted_value = self.read_val.unwrap_or(0) << 1;
         if is_miso_high {
             self.read_val = Some(shifted_value | 1);
@@ -109,17 +109,17 @@ where
 
     #[inline]
     fn set_clk_high(&mut self) -> Result<(), crate::spi::Error<E>> {
-        self.sck.set_high().map_err(Error::Bus)
+        self.sck.try_set_high().map_err(Error::Bus)
     }
 
     #[inline]
     fn set_clk_low(&mut self) -> Result<(), crate::spi::Error<E>> {
-        self.sck.set_low().map_err(Error::Bus)
+        self.sck.try_set_low().map_err(Error::Bus)
     }
 
     #[inline]
     fn wait_for_timer(&mut self) {
-        block!(self.timer.wait()).ok();
+        block!(self.timer.try_wait()).ok();
     }
 }
 
@@ -133,14 +133,14 @@ where
     type Error = crate::spi::Error<E>;
 
     #[inline]
-    fn read(&mut self) -> nb::Result<u8, Self::Error> {
+    fn try_read(&mut self) -> nb::Result<u8, Self::Error> {
         match self.read_val {
             Some(val) => Ok(val),
             None => Err(nb::Error::Other(crate::spi::Error::NoData)),
         }
     }
 
-    fn send(&mut self, byte: u8) -> nb::Result<(), Self::Error> {
+    fn try_send(&mut self, byte: u8) -> nb::Result<(), Self::Error> {
         for bit_offset in 0..8 {
             let out_bit = match self.bit_order {
                 BitOrder::MSBFirst => (byte >> (7 - bit_offset)) & 0b1,
@@ -148,9 +148,9 @@ where
             };
 
             if out_bit == 1 {
-                self.mosi.set_high().map_err(Error::Bus)?;
+                self.mosi.try_set_high().map_err(Error::Bus)?;
             } else {
-                self.mosi.set_low().map_err(Error::Bus)?;
+                self.mosi.try_set_low().map_err(Error::Bus)?;
             }
 
             match self.mode {