move PllSetup in pll mod

CHANGELOG.md

@@ -30,7 +30,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  - Allow different lengths of buffers in hal_1 SpiBus impl [#566]
  - Clean SPI write impls [#774]
  - move `ptr()` to `Ptr` trait [#773]
- - make `I2sFreq` trait similar to `BusClock` [#796]
+ - make `I2sFreq` trait similar to `BusClock`, refactor `rcc::Pll` [#796] [#798]
  - `steal` UART peripheral on `Rx::new` [#768]
 
 [#248]: https://github.com/stm32-rs/stm32f4xx-hal/pull/248
@@ -52,6 +52,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 [#783]: https://github.com/stm32-rs/stm32f4xx-hal/pull/783
 [#785]: https://github.com/stm32-rs/stm32f4xx-hal/pull/785
 [#796]: https://github.com/stm32-rs/stm32f4xx-hal/pull/796
+[#798]: https://github.com/stm32-rs/stm32f4xx-hal/pull/798
 
 ## [v0.21.0] - 2024-05-30
 

Cargo.toml

@@ -167,6 +167,7 @@ gpio-f401 = [
     "tim9",
     "tim10",
     "tim11",
+    "rcc_shared_m"
 ]
 gpio-f410 = [
     "dac",
@@ -230,6 +231,7 @@ gpio-f412 = [
     "tim13",
     "tim14",
     "usart3",
+    "rcc_i2s_apb",
 ]
 gpio-f413 = [
     "gpiod",
@@ -275,6 +277,7 @@ gpio-f413 = [
     "uart8",
     "uart9",
     "uart10",
+    "rcc_i2s_apb",
 ]
 gpio-f417 = [
     "gpiod",
@@ -313,6 +316,7 @@ gpio-f417 = [
     "usart3",
     "uart4",
     "uart5",
+    "rcc_shared_m"
 ]
 gpio-f427 = [
     "gpiod",
@@ -360,6 +364,7 @@ gpio-f427 = [
     "uart5",
     "uart7",
     "uart8",
+    "rcc_shared_m"
 ]
 gpio-f446 = [
     "gpiod",
@@ -401,6 +406,7 @@ gpio-f446 = [
     "usart3",
     "uart4",
     "uart5",
+    "rcc_i2s_apb",
 ]
 gpio-f469 = [
     "gpiod",
@@ -451,6 +457,7 @@ gpio-f469 = [
     "uart5",
     "uart7",
     "uart8",
+    "rcc_shared_m"
 ]
 
 ## Support monotonic timers and other stuff that can be used by [RTICv1 framework](https://crates.io/crates/cortex-m-rtic)
@@ -490,8 +497,12 @@ fsmc_lcd = ["dep:display-interface", "dep:display-interface-04"]
 ## SDIO peripheral support. See [sdio-host](https://crates.io/crates/sdio-host)
 sdio-host = ["dep:sdio-host"]
 
+# Next features are for internal use only!!!
+
 dfsdm = []
 sai = []
+rcc_shared_m = []
+rcc_i2s_apb = []
 
 adc2 = []
 adc3 = []

src/fmpi2c.rs

@@ -143,7 +143,6 @@ impl<I2C: Instance> I2c<I2C> {
 impl<I2C: Instance> I2c<I2C> {
     fn i2c_init(&self, mode: impl Into<Mode>) {
         let mode = mode.into();
-        use core::cmp;
 
         // Make sure the I2C unit is disabled so we can configure it
         self.i2c.cr1().modify(|_, w| w.pe().clear_bit());
@@ -167,21 +166,21 @@ impl<I2C: Instance> I2c<I2C> {
         match mode {
             Mode::Standard { frequency } => {
                 presc = 3;
-                scll = cmp::max((((FREQ >> presc) >> 1) / frequency.raw()) - 1, 255) as u8;
+                scll = crate::max_u32((((FREQ >> presc) >> 1) / frequency.raw()) - 1, 255) as u8;
                 sclh = scll - 4;
                 sdadel = 2;
                 scldel = 4;
             }
             Mode::Fast { frequency } => {
                 presc = 1;
-                scll = cmp::max((((FREQ >> presc) >> 1) / frequency.raw()) - 1, 255) as u8;
+                scll = crate::max_u32((((FREQ >> presc) >> 1) / frequency.raw()) - 1, 255) as u8;
                 sclh = scll - 6;
                 sdadel = 2;
                 scldel = 3;
             }
             Mode::FastPlus { frequency } => {
                 presc = 0;
-                scll = cmp::max((((FREQ >> presc) >> 1) / frequency.raw()) - 4, 255) as u8;
+                scll = crate::max_u32((((FREQ >> presc) >> 1) / frequency.raw()) - 4, 255) as u8;
                 sclh = scll - 2;
                 sdadel = 0;
                 scldel = 2;

src/i2s.rs

@@ -56,11 +56,11 @@ where
 
 impl I2sFreq for rcc::APB1 {
     fn try_i2s_freq(clocks: &Clocks) -> Option<Hertz> {
-        #[cfg(not(any(feature = "gpio-f412", feature = "gpio-f413", feature = "gpio-f446")))]
+        #[cfg(not(feature = "rcc_i2s_apb"))]
         {
             clocks.i2s_clk()
         }
-        #[cfg(any(feature = "gpio-f412", feature = "gpio-f413", feature = "gpio-f446"))]
+        #[cfg(feature = "rcc_i2s_apb")]
         {
             clocks.i2s_apb1_clk()
         }
@@ -69,11 +69,11 @@ impl I2sFreq for rcc::APB1 {
 
 impl I2sFreq for rcc::APB2 {
     fn try_i2s_freq(clocks: &Clocks) -> Option<Hertz> {
-        #[cfg(not(any(feature = "gpio-f412", feature = "gpio-f413", feature = "gpio-f446")))]
+        #[cfg(not(feature = "rcc_i2s_apb"))]
         {
             clocks.i2s_clk()
         }
-        #[cfg(any(feature = "gpio-f412", feature = "gpio-f413", feature = "gpio-f446"))]
+        #[cfg(feature = "rcc_i2s_apb")]
         {
             clocks.i2s_apb2_clk()
         }

src/lib.rs

@@ -227,3 +227,20 @@ pub trait Steal {
     /// no stolen instances are passed to such software.
     unsafe fn steal() -> Self;
 }
+
+#[allow(unused)]
+const fn max_u32(first: u32, second: u32) -> u32 {
+    if second > first {
+        second
+    } else {
+        first
+    }
+}
+
+const fn min_u32(first: u32, second: u32) -> u32 {
+    if second < first {
+        second
+    } else {
+        first
+    }
+}