Moved flipdot code to its own file

src/flipdot.rs

@@ -0,0 +1,82 @@
+use core::fmt::Debug;
+use embedded_hal::digital::v2::OutputPin;
+
+fn toggle_clock<ClockPin, Error>(clock_pin: &mut ClockPin, delay: &mut cortex_m::delay::Delay)
+where
+    ClockPin: OutputPin<Error = Error>,
+    Error: Debug,
+{
+    clock_pin.set_high().unwrap();
+    delay.delay_us(1);
+    clock_pin.set_low().unwrap();
+    delay.delay_us(1);
+}
+
+fn shift_out_bits<ClockPin, DataPin, Error>(
+    data: u32,
+    len: u8,
+    clock_pin: &mut ClockPin,
+    data_pin: &mut DataPin,
+    delay: &mut cortex_m::delay::Delay,
+) where
+    ClockPin: OutputPin<Error = Error>,
+    DataPin: OutputPin<Error = Error>,
+    Error: Debug,
+{
+    for i in 0..len {
+        if data & (1 << (len - i - 1) as u32) != 0 {
+            data_pin.set_high().unwrap();
+        } else {
+            data_pin.set_low().unwrap();
+        }
+        toggle_clock(clock_pin, delay);
+    }
+}
+
+pub fn write_display<
+    ColClockPin,
+    ColDataPin,
+    RowClockPin,
+    RowDataPin,
+    StrobePin,
+    WhiteOEPin,
+    BlackOEPin,
+    Error,
+>(
+    pixels: &[u32; 16],
+    col_clock_pin: &mut ColClockPin,
+    col_data_pin: &mut ColDataPin,
+    row_clock_pin: &mut RowClockPin,
+    row_data_pin: &mut RowDataPin,
+    strobe_pin: &mut StrobePin,
+    white_oe_pin: &mut WhiteOEPin,
+    black_oe_pin: &mut BlackOEPin,
+    delay: &mut cortex_m::delay::Delay,
+) where
+    ColClockPin: OutputPin<Error = Error>,
+    ColDataPin: OutputPin<Error = Error>,
+    RowClockPin: OutputPin<Error = Error>,
+    RowDataPin: OutputPin<Error = Error>,
+    StrobePin: OutputPin<Error = Error>,
+    WhiteOEPin: OutputPin<Error = Error>,
+    BlackOEPin: OutputPin<Error = Error>,
+    Error: Debug,
+{
+    for y in 0..16 {
+        shift_out_bits(pixels[y], 24, col_clock_pin, col_data_pin, delay);
+
+        shift_out_bits(1 << y, 16, row_clock_pin, row_data_pin, delay);
+
+        strobe_pin.set_high().unwrap();
+        delay.delay_us(1);
+        strobe_pin.set_low().unwrap();
+
+        white_oe_pin.set_high().unwrap();
+        delay.delay_ms(10);
+        white_oe_pin.set_low().unwrap();
+
+        black_oe_pin.set_high().unwrap();
+        delay.delay_ms(10);
+        black_oe_pin.set_low().unwrap();
+    }
+}

src/main.rs

@@ -8,7 +8,6 @@ use bsp::entry;
 use defmt::*;
 use defmt_rtt as _;
 use embedded_hal::digital::v2::OutputPin;
-use num_traits::{Float, FloatConst};
 use panic_probe as _;
 
 // Provide an alias for our BSP so we can switch targets quickly.
@@ -23,81 +22,8 @@ use bsp::hal::{
     watchdog::Watchdog,
 };
 
-fn toggle_clock<ClockPin>(clock_pin: &mut ClockPin, delay: &mut cortex_m::delay::Delay)
-where
-    ClockPin: OutputPin,
-{
-    clock_pin.set_high();
-    delay.delay_us(1);
-    clock_pin.set_low();
-    delay.delay_us(1);
-}
-
-fn shift_out_bits<ClockPin, DataPin>(
-    data: u32,
-    len: u8,
-    clock_pin: &mut ClockPin,
-    data_pin: &mut DataPin,
-    delay: &mut cortex_m::delay::Delay,
-) where
-    ClockPin: OutputPin,
-    DataPin: OutputPin,
-{
-    for i in 0..len {
-        if data & (1 << (len - i - 1) as u32) != 0 {
-            data_pin.set_high();
-        } else {
-            data_pin.set_low();
-        }
-        toggle_clock(clock_pin, delay);
-    }
-}
-
-fn write_display<
-    ColClockPin,
-    ColDataPin,
-    RowClockPin,
-    RowDataPin,
-    StrobePin,
-    WhiteOEPin,
-    BlackOEPin,
->(
-    pixels: &[u32; 16],
-    col_clock_pin: &mut ColClockPin,
-    col_data_pin: &mut ColDataPin,
-    row_clock_pin: &mut RowClockPin,
-    row_data_pin: &mut RowDataPin,
-    strobe_pin: &mut StrobePin,
-    white_oe_pin: &mut WhiteOEPin,
-    black_oe_pin: &mut BlackOEPin,
-    delay: &mut cortex_m::delay::Delay,
-) where
-    ColClockPin: OutputPin,
-    ColDataPin: OutputPin,
-    RowClockPin: OutputPin,
-    RowDataPin: OutputPin,
-    StrobePin: OutputPin,
-    WhiteOEPin: OutputPin,
-    BlackOEPin: OutputPin,
-{
-    for y in 0..16 {
-        shift_out_bits(pixels[y], 24, col_clock_pin, col_data_pin, delay);
-
-        shift_out_bits(1 << y, 16, row_clock_pin, row_data_pin, delay);
-
-        strobe_pin.set_high();
-        delay.delay_us(1);
-        strobe_pin.set_low();
-
-        white_oe_pin.set_high();
-        delay.delay_ms(10);
-        white_oe_pin.set_low();
-
-        black_oe_pin.set_high();
-        delay.delay_ms(10);
-        black_oe_pin.set_low();
-    }
-}
+mod flipdot;
+use crate::flipdot::write_display;
 
 #[entry]
 fn main() -> ! {