Add basic support for ATmega64

Pull in the ATDF file from Microchip and add all the necessary plumbing
around the code-base to make it compile.  Not tested against real
hardware and no device-specific patches are included yet.

Signed-off-by: Rahix <rahix@rahix.de>

Cargo.toml

@@ -10,6 +10,7 @@ atmega1280 = []
 atmega8 = []
 atmega328p = []
 atmega32u4 = []
+atmega64 = []
 attiny85 = []
 rt = ["avr-device-macros"]
 

Makefile

@@ -1,6 +1,6 @@
 all: deps chips
 
-CHIPS := atmega1280 atmega8 atmega328p atmega32u4 attiny85
+CHIPS := atmega1280 atmega8 atmega328p atmega32u4 atmega64 attiny85
 
 PATCHES := $(foreach chip, $(CHIPS), $(wildcard patch/$(chip).yaml))
 DEPS := $(foreach patch, $(PATCHES), $(patsubst patch/%.yaml, .deps/%.d, $(patch)))

README.md

@@ -35,6 +35,7 @@ Via the feature you can select which chip you want the register specifications f
 * `atmega8`
 * `atmega328p`
 * `atmega32u4`
+* `atmega64`
 * `attiny85`
 
 ## Internals

patch/atmega64.yaml

@@ -0,0 +1,4 @@
+_include:
+  - "common/ac.yaml"
+  - "common/spi.yaml"
+  - "common/usart.yaml"

src/devices/mod.rs

@@ -79,6 +79,25 @@ impl atmega8::Peripherals {
     }
 }
 
+/// [ATmega64](https://www.microchip.com/wwwproducts/en/ATmega64)
+#[cfg(feature = "atmega64")]
+pub mod atmega64;
+
+#[cfg(feature = "atmega64")]
+impl atmega64::Peripherals {
+    /// Returns all the peripherals *once*
+    #[inline]
+    pub fn take() -> Option<Self> {
+        crate::interrupt::free(|_| {
+            if unsafe { DEVICE_PERIPHERALS } {
+                None
+            } else {
+                Some(unsafe { atmega64::Peripherals::steal() })
+            }
+        })
+    }
+}
+
 /// [ATtiny85](https://www.microchip.com/wwwproducts/en/ATtiny85)
 #[cfg(feature = "attiny85")]
 pub mod attiny85;

src/lib.rs

@@ -3,6 +3,7 @@
 #![cfg_attr(feature = "atmega8", doc = "**atmega8**,")]
 #![cfg_attr(feature = "atmega328p", doc = "**atmega328p**,")]
 #![cfg_attr(feature = "atmega32u4", doc = "**atmega32u4**,")]
+#![cfg_attr(feature = "atmega64", doc = "**atmega64**,")]
 #![cfg_attr(feature = "attiny85", doc = "**attiny85**,")]
 //! and a few things which apply to AVR microcontrollers generally.
 //!
@@ -12,6 +13,7 @@
 //! * `atmega8`
 //! * `atmega328p`
 //! * `atmega32u4`
+//! * `atmega64`
 //! * `attiny85`
 #![no_std]
 #![feature(asm)]
@@ -37,6 +39,8 @@ pub use crate::devices::atmega328p;
 pub use crate::devices::atmega32u4;
 #[cfg(feature = "atmega8")]
 pub use crate::devices::atmega8;
+#[cfg(feature = "atmega64")]
+pub use crate::devices::atmega64;
 #[cfg(feature = "attiny85")]
 pub use crate::devices::attiny85;
 
@@ -45,6 +49,7 @@ pub use crate::devices::attiny85;
     feature = "atmega8",
     feature = "atmega328p",
     feature = "atmega32u4",
+    feature = "atmega64",
     feature = "attiny85",
 )))]
 compile_error!("You need to select at least one chip as a feature!");