refacfeat: i think it works with hal?

Cargo.lock

@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "as-slice"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "516b6b4f0e40d50dcda9365d53964ec74560ad4284da2e7fc97122cd83174516"
+dependencies = [
+ "stable_deref_trait",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+
 [[package]]
 name = "bare-metal"
 version = "0.2.5"
@@ -11,19 +26,40 @@ dependencies = [
  "rustc_version",
 ]
 
+[[package]]
+name = "bare-metal"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
+
 [[package]]
 name = "bitfield"
 version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
 
+[[package]]
+name = "cast"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
+
+[[package]]
+name = "chrono"
+version = "0.4.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a7964611d71df112cb1730f2ee67324fcf4d0fc6606acbbe9bfe06df124637c"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "cortex-m"
 version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ec610d8f49840a5b376c69663b6369e71f4b34484b9b2eb29fb918d92516cb9"
 dependencies = [
- "bare-metal",
+ "bare-metal 0.2.5",
  "bitfield",
  "critical-section",
  "embedded-hal",
@@ -66,6 +102,15 @@ dependencies = [
  "void",
 ]
 
+[[package]]
+name = "embedded-time"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7a4b4d10ac48d08bfe3db7688c402baadb244721f30a77ce360bd24c3dffe58"
+dependencies = [
+ "num",
+]
+
 [[package]]
 name = "nb"
 version = "0.1.3"
@@ -89,6 +134,69 @@ dependencies = [
  "cortex-m-rt",
  "panic-rtt-target",
  "rtt-target",
+ "stm32l0xx-hal",
+]
+
+[[package]]
+name = "num"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b7a8e9be5e039e2ff869df49155f1c06bd01ade2117ec783e56ab0932b67a8f"
+dependencies = [
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "747d632c0c558b87dbabbe6a82f3b4ae03720d0646ac5b7b4dae89394be5f2c5"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
 ]
 
 [[package]]
@@ -119,6 +227,15 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rtcc"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95973c3a0274adc4f3c5b70d2b5b85618d6de9559a6737d3293ecae9a2fc0839"
+dependencies = [
+ "chrono",
+]
+
 [[package]]
 name = "rtt-target"
 version = "0.5.0"
@@ -153,6 +270,42 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
+[[package]]
+name = "stm32l0"
+version = "0.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37c35ac5e2c330137c257b7254eb4593e3e8312104dedc1880447654cb8dd50f"
+dependencies = [
+ "bare-metal 1.0.0",
+ "cortex-m",
+ "cortex-m-rt",
+ "vcell",
+]
+
+[[package]]
+name = "stm32l0xx-hal"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e481a2554bbcbb7da494fe3adfc901bbf106f9880c898b22728b3709bf6f22d1"
+dependencies = [
+ "as-slice",
+ "cast",
+ "cortex-m",
+ "cortex-m-rt",
+ "embedded-hal",
+ "embedded-time",
+ "nb 1.1.0",
+ "rtcc",
+ "stm32l0",
+ "void",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.100"

Cargo.toml

@@ -8,7 +8,14 @@ cortex-m = { version = "0.7.7", features = ["critical-section-single-core"] }
 cortex-m-rt = "0.7.3"
 panic-rtt-target = "0.1.3"
 rtt-target = "0.5.0"
-
+# hal = { package = "stm32-hal2", version = "1.8.3", features = ["l4x3", "l4rt"] }
+hal = { package = "stm32l0xx-hal", version = "0.10.0", features = [
+	"rt",
+	"stm32l0x3",
+	"flash-192",
+	"ram-20",
+	# "mcu-STM32L053R8", # does not exist in that crate
+] }
 
 [[bin]]
 name = "nucleo-l053r8-blink"

memory.x

@@ -1,8 +0,0 @@
-# FLASH 0x08000000 - 0x0802FFFF 192K
-# RAM   0x20000000 - 0x20004FFF 20K
-
-MEMORY
-{
-  FLASH : ORIGIN = 0x08000000, LENGTH = 192K
-  RAM   : ORIGIN = 0x20000000, LENGTH = 20K
-}

src/main.rs

@@ -4,6 +4,7 @@
 // We need to use cortex_m here so the linker can find it's critical-section, but we import is as
 // an underscore since we don't directly use any of its symbols.
 use cortex_m as _;
+use cortex_m::delay::Delay;
 
 // The entry import gives us a macro to indicate where the microcontroller should start the
 // program, and also sets up the FPU on our Cortex-M4F.
@@ -13,6 +14,8 @@ use cortex_m_rt::entry;
 use panic_rtt_target as _;
 use rtt_target::{rprintln, rtt_init_print};
 
+use hal as _;
+
 // Start here, and don't ever return from this function.
 #[entry]
 fn main() -> ! {