From c8fe95e63b01047678b36b009d91c69b8de12a2b Mon Sep 17 00:00:00 2001
From: hangpersonal <hangcui1201@gmail.com>
Date: Thu, 8 Oct 2026 00:09:26 -0700
Subject: [PATCH] Add my_led

---
 apps/my_led/CMakeLists.txt               | 10 +++++++
 apps/my_led/boards/black_f407ve.overlay  | 21 ++++++++++++++
 apps/my_led/dts/bindings/custom-led.yaml | 14 ++++++++++
 apps/my_led/prj.conf                     |  6 ++++
 apps/my_led/src/main.c                   | 35 ++++++++++++++++++++++++
 5 files changed, 86 insertions(+)
 create mode 100644 apps/my_led/CMakeLists.txt
 create mode 100644 apps/my_led/boards/black_f407ve.overlay
 create mode 100644 apps/my_led/dts/bindings/custom-led.yaml
 create mode 100644 apps/my_led/prj.conf
 create mode 100644 apps/my_led/src/main.c

diff --git a/apps/my_led/CMakeLists.txt b/apps/my_led/CMakeLists.txt
new file mode 100644
index 0000000..f3846da
--- /dev/null
+++ b/apps/my_led/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+# Locate the Zephyr build system as a CMake package
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+# Project name
+project(my_led)
+
+# Add source files belong to this application
+target_sources(app PRIVATE src/main.c)
\ No newline at end of file
diff --git a/apps/my_led/boards/black_f407ve.overlay b/apps/my_led/boards/black_f407ve.overlay
new file mode 100644
index 0000000..2140ea5
--- /dev/null
+++ b/apps/my_led/boards/black_f407ve.overlay
@@ -0,0 +1,21 @@
+/ {
+	custom_led0: custom_led0 {
+		compatible = "custom-led";
+		custom-gpios = <&gpioe 13 GPIO_ACTIVE_HIGH>;
+		my-delay-ms = <1000>; /* Optional, equals 500 by default */
+	};
+	aliases {
+		myled = &custom_led0;
+	};
+};
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(25)>;
+};
+
+&pll {
+	div-m = <25>;
+	mul-n = <336>;
+	div-p = <2>;
+	div-q = <7>;
+};
diff --git a/apps/my_led/dts/bindings/custom-led.yaml b/apps/my_led/dts/bindings/custom-led.yaml
new file mode 100644
index 0000000..0322b94
--- /dev/null
+++ b/apps/my_led/dts/bindings/custom-led.yaml
@@ -0,0 +1,14 @@
+compatible: custom-led
+
+description: Example custom node describing a single LED GPIO and a blink delay.
+
+properties:
+  custom-gpios:
+    type: phandle-array
+    required: true
+    description: My LED GPIO.
+  my-delay-ms:
+    type: int
+    required: false
+    default: 500
+    description: Blink delay in milliseconds.
diff --git a/apps/my_led/prj.conf b/apps/my_led/prj.conf
new file mode 100644
index 0000000..cb21cb7
--- /dev/null
+++ b/apps/my_led/prj.conf
@@ -0,0 +1,6 @@
+CONFIG_GPIO=y
+CONFIG_SERIAL=y
+CONFIG_ADC=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_CONSOLE=y
+CONFIG_PRINTK=y
\ No newline at end of file
diff --git a/apps/my_led/src/main.c b/apps/my_led/src/main.c
new file mode 100644
index 0000000..9801852
--- /dev/null
+++ b/apps/my_led/src/main.c
@@ -0,0 +1,35 @@
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/gpio.h>
+
+#define LED_NODE DT_ALIAS(myled)
+
+#define BLINK_DELAY_MS DT_PROP(LED_NODE, my_delay_ms)
+
+const struct gpio_dt_spec led = 
+	GPIO_DT_SPEC_GET(LED_NODE, custom_gpios);
+
+int main(void) {
+
+	int ret;
+
+	if (!device_is_ready(led.port)) {
+		printk("LED GPIO device not ready\n");
+		return 0;
+	}
+
+	ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_INACTIVE);
+	if (ret != 0) {
+		printk("Failed to configure LED: %d\n", ret);
+		return 0;
+	}
+
+	printk("Blinking with delay %d ms\n", BLINK_DELAY_MS);
+	
+	while (1) {
+		gpio_pin_toggle_dt(&led);
+		k_sleep(K_MSEC(BLINK_DELAY_MS));
+	}
+
+	return 0;
+	
+}
\ No newline at end of file