Implement most of basic HAL

Oscillator:
The oscillator is configured correctly.

Interrupts:
RX uart interrupts work.
The global interrupt vector table is enabled.

UART:
RX features work.

1 files changed, 22 insertions, 0 deletions

diff --git a/hal/hwconfig.hpp b/hal/hwconfig.hpp
new file mode 100644
index 0000000..0cd38ac
--- /dev/null
+++ b/hal/hwconfig.hpp
@@ -0,0 +1,22 @@
+#ifndef HWCONFIG_HPP
+#define HWCONFIG_HPP
+
+#define _XTAL_FREQ  8000000UL
+
+namespace hw
+{
+	void reglock();
+	void regunlock();
+}
+
+namespace osc
+{
+	void initialize();
+}
+
+namespace interrupts
+{
+	void initialize();
+}
+
+#endif
\ No newline at end of file