libboard_zynq: impl embedded_hal serial write traits for Uart

This commit is contained in:
Astro 2020-04-24 21:31:37 +02:00
parent 61e67520d1
commit 04c47b9bdb
3 changed files with 51 additions and 0 deletions

24
Cargo.lock generated
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@ -25,6 +25,15 @@ name = "compiler_builtins"
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@ -52,8 +61,10 @@ name = "libboard_zynq"
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@ -131,6 +147,11 @@ name = "vcell"
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@ -12,6 +12,8 @@ target_cora_z7_10 = []
[dependencies] [dependencies]
volatile-register = "0.2" volatile-register = "0.2"
bit_field = "0.10" bit_field = "0.10"
embedded-hal = "0.2"
nb = "0.1"
libregister = { path = "../libregister" } libregister = { path = "../libregister" }
libcortex_a9 = { path = "../libcortex_a9" } libcortex_a9 = { path = "../libcortex_a9" }

View File

@ -206,3 +206,28 @@ impl fmt::Write for Uart {
Ok(()) Ok(())
} }
} }
/// embedded_hal async API
impl embedded_hal::serial::Write<u8> for Uart {
type Error = ();
fn write(&mut self, b: u8) -> nb::Result<(), ()> {
if self.tx_fifo_full() {
Err(nb::Error::WouldBlock)
} else {
self.write_byte(b);
Ok(())
}
}
fn flush(&mut self) -> nb::Result<(), ()> {
if self.tx_fifo_empty() {
Ok(())
} else {
Err(nb::Error::WouldBlock)
}
}
}
/// embedded_hal sync API
impl embedded_hal::blocking::serial::write::Default<u8> for Uart {}