PeripheralRef init: uart (#272)

* Add the peripheral module plus some helper macros in preparation

* peripheral macro

* Add peripheral generation macro

* Fixes after rebase

* Update the signature of Peripherals::take

* syncronise hello world example

* fmt the entire repo

Co-authored-by: Jesse Braham <[email protected]>

esp-hal-common/build.rs

@@ -55,7 +55,14 @@ fn main() {
             "uart2",
         ]
     } else if esp32c2 {
-        vec!["esp32c2", "riscv", "single_core", "gdma", "systimer", "timg0"]
+        vec![
+            "esp32c2",
+            "riscv",
+            "single_core",
+            "gdma",
+            "systimer",
+            "timg0",
+        ]
     } else if esp32c3 {
         vec![
             "esp32c3",

esp-hal-common/src/embassy/time_driver_systimer.rs

@@ -75,7 +75,11 @@ impl EmbassyTimer {
         }
     }
 
-    pub(crate) fn set_alarm(&self, alarm: embassy_time::driver::AlarmHandle, timestamp: u64) -> bool {
+    pub(crate) fn set_alarm(
+        &self,
+        alarm: embassy_time::driver::AlarmHandle,
+        timestamp: u64,
+    ) -> bool {
         critical_section::with(|cs| {
             let now = Self::now();
             let alarm_state = unsafe { self.alarms.borrow(cs).get_unchecked(alarm.id() as usize) };
@@ -108,7 +112,7 @@ impl EmbassyTimer {
     }
 
     fn disable_interrupt(&self, id: u8) {
-         match id {
+        match id {
             0 => self.alarm0.interrupt_enable(false),
             1 => self.alarm1.interrupt_enable(false),
             2 => self.alarm2.interrupt_enable(false),

esp-hal-common/src/embassy/time_driver_timg.rs

@@ -68,7 +68,11 @@ impl EmbassyTimer {
         }
     }
 
-    pub(crate) fn set_alarm(&self, alarm: embassy_time::driver::AlarmHandle, timestamp: u64) -> bool {
+    pub(crate) fn set_alarm(
+        &self,
+        alarm: embassy_time::driver::AlarmHandle,
+        timestamp: u64,
+    ) -> bool {
         critical_section::with(|cs| {
             let now = Self::now();
             let alarm_state = unsafe { self.alarms.borrow(cs).get_unchecked(alarm.id() as usize) };
@@ -87,7 +91,7 @@ impl EmbassyTimer {
             tg.set_auto_reload(false);
             tg.set_counter_active(true);
             tg.set_alarm_active(true);
-                    
+
             true
         })
     }

esp-hal-common/src/interrupt/xtensa.rs

@@ -340,7 +340,9 @@ mod vectored {
     const CPU_INTERRUPT_EDGE: u32 = 0b_0111_0000_0100_0000_0000_1100_1000_0000;
 
     #[inline]
-    fn cpu_interrupt_nr_to_cpu_interrupt_handler(number: u32) -> Option<unsafe extern "C" fn(u32, save_frame: &mut Context)> {
+    fn cpu_interrupt_nr_to_cpu_interrupt_handler(
+        number: u32,
+    ) -> Option<unsafe extern "C" fn(u32, save_frame: &mut Context)> {
         use xtensa_lx_rt::*;
         // we're fortunate that all esp variants use the same CPU interrupt layout
         Some(match number {

esp-hal-common/src/lib.rs

@@ -22,15 +22,23 @@
 #![cfg_attr(xtensa, feature(asm_experimental_arch))]
 
 #[cfg(esp32)]
-pub use esp32 as pac;
+pub(crate) use esp32 as pac;
 #[cfg(esp32c2)]
-pub use esp32c2 as pac;
+pub(crate) use esp32c2 as pac;
 #[cfg(esp32c3)]
-pub use esp32c3 as pac;
+pub(crate) use esp32c3 as pac;
 #[cfg(esp32s2)]
-pub use esp32s2 as pac;
+pub(crate) use esp32s2 as pac;
 #[cfg(esp32s3)]
-pub use esp32s3 as pac;
+pub(crate) use esp32s3 as pac;
+
+#[cfg_attr(esp32, path = "peripherals/esp32.rs")]
+#[cfg_attr(esp32c3, path = "peripherals/esp32c3.rs")]
+#[cfg_attr(esp32c2, path = "peripherals/esp32c2.rs")]
+#[cfg_attr(esp32s2, path = "peripherals/esp32s2.rs")]
+#[cfg_attr(esp32s3, path = "peripherals/esp32s3.rs")]
+pub mod peripherals;
+
 pub use procmacros as macros;
 
 #[cfg(rmt)]
@@ -43,9 +51,9 @@ pub use self::{
     interrupt::*,
     rng::Rng,
     rtc_cntl::{Rtc, Rwdt},
-    serial::Serial,
     spi::Spi,
     timer::Timer,
+    uart::Uart,
 };
 
 pub mod analog;
@@ -63,19 +71,20 @@ pub mod ledc;
 pub mod mcpwm;
 #[cfg(usb_otg)]
 pub mod otg_fs;
+pub mod peripheral;
 pub mod prelude;
 #[cfg(rmt)]
 pub mod pulse_control;
 pub mod rng;
 pub mod rom;
 pub mod rtc_cntl;
-pub mod serial;
 pub mod sha;
 pub mod spi;
 pub mod system;
 #[cfg(systimer)]
 pub mod systimer;
 pub mod timer;
+pub mod uart;
 #[cfg(usb_serial_jtag)]
 pub mod usb_serial_jtag;
 #[cfg(rmt)]