Use imxrt-uart-panic crate instead of custom panic handler

examples/teensy4_blinky/Cargo.lock

@@ -194,6 +194,7 @@ version = "0.1.0"
 dependencies = [
  "embedded-hal 0.2.7",
  "imxrt-log",
+ "imxrt-uart-panic",
  "log",
  "nb 1.1.0",
  "rtic",
@@ -278,6 +279,19 @@ dependencies = [
  "cortex-m-rt",
 ]
 
+[[package]]
+name = "imxrt-uart-panic"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbec2a318caf77dd2299f23982a2cc3435af8cc0b99787eaba3dbff711efc1d3"
+dependencies = [
+ "cortex-m",
+ "embedded-hal 0.2.7",
+ "imxrt-hal",
+ "imxrt-ral",
+ "nb 1.1.0",
+]
+
 [[package]]
 name = "imxrt-usbd"
 version = "0.2.2"
@@ -434,7 +448,6 @@ dependencies = [
  "embedded-hal 1.0.0-rc.1",
  "fugit",
  "imxrt-ral",
- "log",
  "rtic-time",
 ]
 

examples/teensy4_blinky/Cargo.toml

@@ -32,6 +32,7 @@ imxrt-log = { version = "0.1.1", default-features = false, features = [
     "lpuart",
 ] }
 log = "0.4.20"
+imxrt-uart-panic = "0.1.1"
 
 # this lets you use `cargo fix`!
 [[bin]]

examples/teensy4_blinky/examples/common/mod.rs

@@ -1,42 +0,0 @@
-macro_rules! uart_panic_handler {
-    ($uart: ident, $tx_pin: ident, $rx_pin: ident, $baud: expr) => {
-        #[panic_handler]
-        fn panic(info: &::core::panic::PanicInfo) -> ! {
-            use ::core::fmt::Write as _;
-            use ::embedded_hal::serial::Write as _;
-
-            let ::teensy4_bsp::board::Resources {
-                $uart: uart, pins, ..
-            } = ::teensy4_bsp::board::t40(unsafe { ::teensy4_bsp::ral::Instances::instances() });
-
-            let uart = ::teensy4_bsp::board::lpuart(uart, pins.$tx_pin, pins.$rx_pin, $baud);
-
-            struct UartWriter<P, const N: u8> {
-                uart: ::teensy4_bsp::hal::lpuart::Lpuart<P, N>,
-            }
-            impl<P, const N: u8> ::core::fmt::Write for UartWriter<P, N> {
-                fn write_str(&mut self, s: &str) -> ::core::fmt::Result {
-                    for &b in s.as_bytes() {
-                        if b == b'\n' {
-                            let _ = ::nb::block!(self.uart.write(b'\r'));
-                        }
-                        let _ = ::nb::block!(self.uart.write(b));
-                    }
-                    Ok(())
-                }
-            }
-
-            let mut uart = UartWriter { uart };
-
-            ::core::writeln!(uart).ok();
-            ::core::writeln!(uart, "{}", info).ok();
-            ::core::writeln!(uart).ok();
-
-            let _ = ::nb::block!(uart.uart.flush());
-
-            ::teensy4_panic::sos()
-        }
-    };
-}
-
-pub(crate) use uart_panic_handler;

examples/teensy4_blinky/examples/with_logs.rs

@@ -3,8 +3,8 @@
 #![no_std]
 #![feature(type_alias_impl_trait)]
 
-mod common;
-common::uart_panic_handler!(lpuart6, p1, p0, 115200);
+use bsp::pins::common::{P0, P1};
+imxrt_uart_panic::register!(LPUART6, P1, P0, 115200, teensy4_panic::sos);
 
 use teensy4_bsp as bsp;