Allow constructing async-only I2CInterface

Author: bugadani

i2c/src/lib.rs

@@ -22,10 +22,7 @@ pub struct I2CInterface<I2C> {
     data_byte: u8,
 }
 
-impl<I2C> I2CInterface<I2C>
-where
-    I2C: embedded_hal::i2c::I2c,
-{
+impl<I2C> I2CInterface<I2C> {
     /// Create new I2C interface for communication with a display driver
     pub fn new(i2c: I2C, addr: u8, data_byte: u8) -> Self {
         Self {
@@ -36,7 +33,7 @@ where
     }
 
     /// Consume the display interface and return
-    /// the underlying peripherial driver
+    /// the underlying peripheral driver
     pub fn release(self) -> I2C {
         self.i2c
     }

spi/src/lib.rs

@@ -129,7 +129,7 @@ impl<SPI, DC> SPIInterface<SPI, DC> {
     }
 
     /// Consume the display interface and return
-    /// the underlying peripherial driver and GPIO pins used by it
+    /// the underlying peripheral driver and GPIO pins used by it
     pub fn release(self) -> (SPI, DC) {
         (self.spi, self.dc)
     }