RFC: separate pad configurations from the HAL

.github/workflows/rust.yml

@@ -45,3 +45,5 @@ jobs:
       run: cd imxrt-hal && cargo fmt --all -- --check
     - name: Run clippy (${{ matrix.feature }}) for HAL
       run: cd imxrt-hal && cargo clippy --features ${{ matrix.feature }} -- -D warnings
+    - name: Run tests for iomuxc crates
+      run: cargo test --package=imxrt-iomuxc --package=imxrt-iomuxc-build --package=imxrt106x-iomuxc

Cargo.toml

@@ -1,6 +1,9 @@
 [workspace]
-
 members = [
     "imxrt-ral",
-    "imxrt-hal"
+    "imxrt-hal",
+
+    "imxrt-iomuxc",
+    "imxrt-iomuxc/imxrt-iomuxc-build",
+    "imxrt-iomuxc/imxrt106x-iomuxc",
 ]

imxrt-hal/Cargo.toml

@@ -20,6 +20,16 @@ nb = "0.1.2"
 void = { version = "1.0.2", default-features = false }
 log = "0.4.8"
 
+[dependencies.imxrt-iomuxc]
+version = "0.1.0"
+path = "../imxrt-iomuxc"
+
+# TODO this will be exposed by a 106x-specific HAL. We're
+# exposing it here for backwards compatibility.
+[dependencies.imxrt106x-iomuxc]
+path = "../imxrt-iomuxc/imxrt106x-iomuxc"
+optional = true
+
 [lib]
 bench = false
 
@@ -34,7 +44,7 @@ default = ["embedded-hal/unproven"] # Allows us to access the new digital pin tr
 #imxrt1051 = ["imxrt-ral/imxrt1051"]
 #imxrt1052 = ["imxrt-ral/imxrt1052"]
 #imxrt1061 = ["imxrt-ral/imxrt1061"]
-imxrt1062 = ["imxrt-ral/imxrt1062"]
+imxrt1062 = ["imxrt-ral/imxrt1062", "imxrt106x-iomuxc"]
 #imxrt1064 = ["imxrt-ral/imxrt1064"]
 rtic = ["imxrt-ral/rtic"]
 rt = ["imxrt-ral/rt"]

imxrt-hal/src/dma.rs

@@ -57,12 +57,12 @@
 //! );
 //!
 //! let mut spi4 = spi4_builder.build(
-//!     peripherals.iomuxc.gpio_b0_02.alt3(),
-//!     peripherals.iomuxc.gpio_b0_01.alt3(),
-//!     peripherals.iomuxc.gpio_b0_03.alt3(),
+//!     peripherals.iomuxc.b0.p02,
+//!     peripherals.iomuxc.b0.p01,
+//!     peripherals.iomuxc.b0.p03,
 //! );
 //!
-//! spi4.enable_chip_select_0(peripherals.iomuxc.gpio_b0_00.alt3());
+//! spi4.enable_chip_select_0(peripherals.iomuxc.b0.p00);
 //!
 //! // Set the SPI clock speed, if desired...
 //!

imxrt-hal/src/dma/peripheral.rs

@@ -93,12 +93,12 @@ mod private {
     pub trait Sealed {}
 
     use crate::uart;
-    impl<M> Sealed for uart::UART<M> where M: uart::module::Module {}
-    impl<M> Sealed for uart::Rx<M> where M: uart::module::Module {}
-    impl<M> Sealed for uart::Tx<M> where M: uart::module::Module {}
+    impl<M> Sealed for uart::UART<M> where M: crate::iomuxc::consts::Unsigned {}
+    impl<M> Sealed for uart::Rx<M> where M: crate::iomuxc::consts::Unsigned {}
+    impl<M> Sealed for uart::Tx<M> where M: crate::iomuxc::consts::Unsigned {}
 
     use crate::spi;
-    impl<M> Sealed for spi::SPI<M> where M: spi::module::Module {}
+    impl<M> Sealed for spi::SPI<M> where M: crate::iomuxc::consts::Unsigned {}
 }
 
 #[derive(Clone, Copy)]