CRC

Fixes #74

Signed-off-by: Felipe Balbi <[email protected]>

1 files changed, 39 insertions, 0 deletions

diff --git a/examples/mcxa/src/bin/crc.rs b/examples/mcxa/src/bin/crc.rs
new file mode 100644
index 000000000..417b4f865
--- /dev/null
+++ b/examples/mcxa/src/bin/crc.rs
@@ -0,0 +1,39 @@
+#![no_std]
+#![no_main]
+
+use embassy_executor::Spawner;
+use hal::config::Config;
+use hal::crc::Crc;
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let config = Config::default();
+    let mut p = hal::init(config);
+
+    defmt::info!("CRC example");
+
+    let buf = b"123456789";
+
+    let mut crc = Crc::new_ccitt_false(p.CRC0.reborrow());
+    let sum = crc.feed_bytes(buf);
+    assert_eq!(sum, 0x29b1);
+
+    let mut crc = Crc::new_maxim(p.CRC0.reborrow());
+    let sum = crc.feed_bytes(buf);
+    assert_eq!(sum, 0x44c2);
+
+    let mut crc = Crc::new_kermit(p.CRC0.reborrow());
+    let sum = crc.feed_bytes(buf);
+    assert_eq!(sum, 0x2189);
+
+    let mut crc = Crc::new_iso_hdlc(p.CRC0.reborrow());
+    let sum = crc.feed_bytes(buf);
+    assert_eq!(sum, 0xcbf4_3926);
+
+    let mut crc = Crc::new_posix(p.CRC0.reborrow());
+    let sum = crc.feed_bytes(buf);
+    assert_eq!(sum, 0x765e_7680);
+
+    defmt::info!("CRC successful");
+}