diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/Cargo.toml | 5 | ||||
| -rw-r--r-- | board/src/teensy4.rs | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/board/Cargo.toml b/board/Cargo.toml index 21defd4..9072274 100644 --- a/board/Cargo.toml +++ b/board/Cargo.toml @@ -45,3 +45,8 @@ imxrt1170evk-cm7 = [ "dep:rtt-target", "dep:panic-rtt-target", ] + +# Dummy boards for testing DCD linking. +# Don't try running these on hardware; they might not work. +__dcd = ["teensy4"] +__dcd_missize = ["teensy4"] diff --git a/board/src/teensy4.rs b/board/src/teensy4.rs index 28587cd..2aaee82 100644 --- a/board/src/teensy4.rs +++ b/board/src/teensy4.rs @@ -35,3 +35,18 @@ pub fn prepare(timer_delay_microseconds: u32) -> Option<crate::Resources> { pit, }) } + +/// Dummy DCD section containing a single NOP command (for testing linker scripts). +#[cfg(feature = "__dcd")] +#[link_section = ".dcd"] +#[no_mangle] +#[used] +pub static DEVICE_CONFIGURATION_DATA: [u8; 8] = [0xD2, 0x00, 0x08, 0x41, 0xC0, 0x00, 0x04, 0x00]; + +/// Ditto but incorrect size (not a multiple of 4 bytes). The linker script should catch this error +/// and fail the build. +#[cfg(feature = "__dcd_missize")] +#[link_section = ".dcd"] +#[no_mangle] +#[used] +pub static DEVICE_CONFIGURATION_DATA: [u8; 7] = [0xD2, 0x00, 0x08, 0x41, 0xC0, 0x00, 0x04]; |