diff options
| -rw-r--r-- | src/peripheral/itm.rs | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/peripheral/itm.rs b/src/peripheral/itm.rs index 57d2ff8..c0d560f 100644 --- a/src/peripheral/itm.rs +++ b/src/peripheral/itm.rs @@ -53,8 +53,19 @@ impl Stim { } /// Returns `true` if the stimulus port is ready to accept more data + #[cfg(not(armv8m))] #[inline] pub fn is_fifo_ready(&self) -> bool { - unsafe { ptr::read_volatile(self.register.get()) & 1 == 1 } + unsafe { ptr::read_volatile(self.register.get()) & 0b1 == 1 } + } + + /// Returns `true` if the stimulus port is ready to accept more data + #[cfg(armv8m)] + #[inline] + pub fn is_fifo_ready(&self) -> bool { + // ARMv8-M adds a disabled bit; we indicate that we are ready to + // proceed with a stimulus write if the port is either ready (bit 0) or + // disabled (bit 1). + unsafe { ptr::read_volatile(self.register.get()) & 0b11 != 0 } } } |