Merge #521

521: const BIDI: bool r=therealprof a=burrbull



Co-authored-by: Andrey Zgarbul <zgarbul.andrey@gmail.com>

Author: bors[bot]

CHANGELOG.md

@@ -9,7 +9,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
-- `PwmHz::get_period`: fix computation of return value, prevent division by zero
+ - Use `bool` for BIDI mode type
+ - `PwmHz::get_period`: fix computation of return value, prevent division by zero
  - apply #[inline] attribute to bitbanding functions [#517]
  - update `stm32f4` to 0.15.1 [#481]
  - use `stm32_i2s_v12x` version 0.3, reexport it, and implements requirement for it [#490]

examples/st7789-lcd.rs

@@ -75,7 +75,7 @@ fn main() -> ! {
         chip_select: ChipSelect1(gpiod.pd7.into_alternate()),
     };
     let lcd_reset = gpiod.pd11.into_push_pull_output();
-    let mut backlight_control = gpiof.pf5.into_push_pull_output();
+    let backlight_control = gpiof.pf5.into_push_pull_output();
 
     // Speed up timing settings, assuming HCLK is 100 MHz (1 cycle = 10 nanoseconds)
     // These read timings work to read settings, but slower timings are needed to read from the