Implement interrupts
This commit adds a new feature-flag `rt` which, when enabled, adds the
`#[interrupt]` procedural macro to define an interrupt handler. Unlike
the implementation in cortex-m, this version needs an attribute which is
the name of the chip the interrupt is for. In code, an interrupt
handler might look like this:
#![feature(abi_avr_interrupt)]
#[avr_device::interrupt(atmega32u4)]
fn INT6() {
// Do Something
}
Closes #1.
Signed-off-by: Rahix <rahix@rahix.de>
Switch to a new design as outlined in #17
Signed-off-by: Rahix <rahix@rahix.de>
make: Make sed usage more portable
fixes #5
Signed-off-by: Rahix <rahix@rahix.de>
make: Add targets for individual chips
Signed-off-by: Rahix <rahix@rahix.de>
make: Fix dependencies of patch files
Signed-off-by: Rahix <rahix@rahix.de>
Integrate patching in the build process