From 3b63f9d5e58d891596a5e6f079a4c2f23ef79df9 Mon Sep 17 00:00:00 2001
From: Artemis Tosini <me@artem.ist>
Date: Sun, 12 Nov 2023 23:36:13 +0000
Subject: [PATCH] zephyr/blink: copy in example to show how to build

---
 zephyr/.gitignore           |  1 +
 zephyr/blink/CMakeLists.txt |  5 +++++
 zephyr/blink/README.txt     |  3 +++
 zephyr/blink/prj.conf       |  1 +
 zephyr/blink/src/main.c     | 44 +++++++++++++++++++++++++++++++++++++
 5 files changed, 54 insertions(+)
 create mode 100644 zephyr/.gitignore
 create mode 100644 zephyr/blink/CMakeLists.txt
 create mode 100644 zephyr/blink/README.txt
 create mode 100644 zephyr/blink/prj.conf
 create mode 100644 zephyr/blink/src/main.c

diff --git a/zephyr/.gitignore b/zephyr/.gitignore
new file mode 100644
index 0000000..567609b
--- /dev/null
+++ b/zephyr/.gitignore
@@ -0,0 +1 @@
+build/
diff --git a/zephyr/blink/CMakeLists.txt b/zephyr/blink/CMakeLists.txt
new file mode 100644
index 0000000..be8ebaa
--- /dev/null
+++ b/zephyr/blink/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(blink)
+target_sources(app PRIVATE src/main.c)
diff --git a/zephyr/blink/README.txt b/zephyr/blink/README.txt
new file mode 100644
index 0000000..423dd23
--- /dev/null
+++ b/zephyr/blink/README.txt
@@ -0,0 +1,3 @@
+Example application to show building:
+cmake -B build -G Ninja -D BOARD=your_board
+ninja -C build
diff --git a/zephyr/blink/prj.conf b/zephyr/blink/prj.conf
new file mode 100644
index 0000000..91c3c15
--- /dev/null
+++ b/zephyr/blink/prj.conf
@@ -0,0 +1 @@
+CONFIG_GPIO=y
diff --git a/zephyr/blink/src/main.c b/zephyr/blink/src/main.c
new file mode 100644
index 0000000..a6d0954
--- /dev/null
+++ b/zephyr/blink/src/main.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/gpio.h>
+
+/* 1000 msec = 1 sec */
+#define SLEEP_TIME_MS   1000
+
+/* The devicetree node identifier for the "led0" alias. */
+#define LED0_NODE DT_ALIAS(led0)
+
+/*
+ * A build error on this line means your board is unsupported.
+ * See the sample documentation for information on how to fix this.
+ */
+static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
+
+int main(void)
+{
+	int ret;
+
+	if (!gpio_is_ready_dt(&led)) {
+		return 0;
+	}
+
+	ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
+	if (ret < 0) {
+		return 0;
+	}
+
+	while (1) {
+		ret = gpio_pin_toggle_dt(&led);
+		if (ret < 0) {
+			return 0;
+		}
+		k_msleep(SLEEP_TIME_MS);
+	}
+	return 0;
+}
+