feat(example): move ospi memory mapped example for stm32h7b0 to separate folder

Signed-off-by: Haobo Gu <haobogu@outlook.com>

examples/stm32h7b0/.cargo/config.toml

@@ -0,0 +1,8 @@
+[target.thumbv7em-none-eabihf]
+runner = 'probe-rs run --chip STM32H7B0VBTx'
+
+[build]
+target = "thumbv7em-none-eabihf" # Cortex-M4F and Cortex-M7F (with FPU)
+
+[env]
+DEFMT_LOG = "trace"

examples/stm32h7b0/Cargo.toml

@@ -0,0 +1,74 @@
+[package]
+edition = "2021"
+name = "embassy-stm32h7b0-examples"
+version = "0.1.0"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "stm32h7b0vb", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
+embassy-sync = { version = "0.6.0", path = "../../embassy-sync", features = ["defmt"] }
+embassy-embedded-hal = { version = "0.2.0", path = "../../embassy-embedded-hal" }
+embassy-executor = { version = "0.6.1", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers"] }
+embassy-time = { version = "0.3.2", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
+embassy-net = { version = "0.4.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6", "dns"] }
+embassy-usb = { version = "0.3.0", path = "../../embassy-usb", features = ["defmt"] }
+embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
+
+defmt = "0.3"
+defmt-rtt = "0.4"
+
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+cortex-m-rt = "0.7.0"
+embedded-hal = "0.2.6"
+embedded-hal-1 = { package = "embedded-hal", version = "1.0" }
+embedded-hal-async = { version = "1.0" }
+embedded-nal-async = "0.8.0"
+embedded-io-async = { version = "0.6.1" }
+panic-probe = { version = "0.3", features = ["print-defmt"] }
+heapless = { version = "0.8", default-features = false }
+rand_core = "0.6.3"
+critical-section = "1.1"
+micromath = "2.0.0"
+stm32-fmc = "0.3.0"
+embedded-storage = "0.3.1"
+static_cell = "2"
+chrono = { version = "^0.4", default-features = false }
+grounded = "0.2.0"
+
+# cargo build/run
+[profile.dev]
+codegen-units = 1
+debug = 2
+debug-assertions = true # <-
+incremental = false
+opt-level = 3 # <-
+overflow-checks = true # <-
+
+# cargo test
+[profile.test]
+codegen-units = 1
+debug = 2
+debug-assertions = true # <-
+incremental = false
+opt-level = 3 # <-
+overflow-checks = true # <-
+
+# cargo build/run --release
+[profile.release]
+codegen-units = 1
+debug = 2
+debug-assertions = false # <-
+incremental = false
+lto = 'fat'
+opt-level = 3 # <-
+overflow-checks = false # <-
+
+# cargo test --release
+[profile.bench]
+codegen-units = 1
+debug = 2
+debug-assertions = false # <-
+incremental = false
+lto = 'fat'
+opt-level = 3 # <-
+overflow-checks = false # <-

examples/stm32h7b0/build.rs

@@ -0,0 +1,35 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}

examples/stm32h7b0/memory.x

@@ -0,0 +1,5 @@
+MEMORY
+{
+    FLASH    : ORIGIN = 0x08000000, LENGTH = 128K /* BANK_1 */
+    RAM      : ORIGIN = 0x24000000, LENGTH = 512K  /* SRAM */
+}

examples/stm32h7b0/src/bin/ospi_memory_mapped.rs

@@ -61,7 +61,7 @@ async fn main(_spawner: Spawner) {
         free_running_clock: false,
         clock_mode: false,
         wrap_size: WrapSize::None,
-        clock_prescaler: 2,
+        clock_prescaler: 4,
         sample_shifting: true,
         delay_hold_quarter_cycle: false,
         chip_select_boundary: 0,
@@ -94,8 +94,8 @@ async fn main(_spawner: Spawner) {
     flash.read_memory(0, &mut rd_buf, true);
     info!("WRITE BUF: {=[u8]:#X}", wr_buf);
     info!("READ BUF: {=[u8]:#X}", rd_buf);
-    info!("Enabling memory mapped mode");
     flash.enable_mm().await;
+    info!("Enabled memory mapped mode");
 
     let first_u32 = unsafe { *(0x90000000 as *const u32) };
     assert_eq!(first_u32, 0x03020100);
@@ -121,7 +121,6 @@ const CMD_QUAD_READ: u8 = 0x6B;
 const CMD_QUAD_WRITE_PG: u8 = 0x32;
 
 const CMD_READ_ID: u8 = 0x9F;
-const CMD_READ_UUID: u8 = 0x4B;
 
 const CMD_ENABLE_RESET: u8 = 0x66;
 const CMD_RESET: u8 = 0x99;