From 8adfcb9a3d27cf5fef9595d158e4e22700ce8a01 Mon Sep 17 00:00:00 2001
From: Laila van Reenen <git@finnvanreenen.nl>
Date: Thu, 9 Jan 2025 19:16:11 +0000
Subject: [PATCH] Initial commit

---
 .gitignore     |  3 +++
 .gitmodules    |  3 +++
 CMakeLists.txt | 20 ++++++++++++++++++++
 init.sh        | 16 ++++++++++++++++
 src/main.c     | 36 ++++++++++++++++++++++++++++++++++++
 5 files changed, 78 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 .gitmodules
 create mode 100644 CMakeLists.txt
 create mode 100644 init.sh
 create mode 100644 src/main.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5a8d6a8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+
+/build
+
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..1891415
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libs/pico-sdk"]
+	path = libs/pico-sdk
+	url = https://github.com/raspberrypi/pico-sdk.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..39b3bbe
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.13)
+
+# initialize the SDK based on PICO_SDK_PATH
+# note: this must happen before project()
+include(libs/pico-sdk/pico_sdk_init.cmake)
+
+project(my_project)
+
+# initialize the Raspberry Pi Pico SDK
+pico_sdk_init()
+
+add_executable(my_project
+    src/main.c
+)
+
+# Add pico_stdlib library which aggregates commonly used features
+target_link_libraries(my_project pico_stdlib)
+
+# create map/bin/hex/uf2 file in addition to ELF.
+pico_add_extra_outputs(my_project)
diff --git a/init.sh b/init.sh
new file mode 100644
index 0000000..48e553c
--- /dev/null
+++ b/init.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+modules=$(git config -f .gitmodules --list | grep -E '^submodule\.')
+
+for moduleUrl in $(echo "$modules" | grep '\.url=')
+do
+   moduleName=$(echo "$moduleUrl" | sed -e 's/^submodule\.\(.*\).url=\(.*\)$/\1/')
+   moduleUrl=$(echo "$moduleUrl" | sed -e 's/^submodule\.\(.*\).url=\(.*\)$/\2/')
+   modulePath=$(echo "$modules" | grep ".*$moduleName\.path=" | sed -e 's/^.*path=\(.*\)$/\1/')
+
+   echo "$moduleUrl -> $modulePath"
+   git submodule add "$moduleUrl" "$modulePath"
+done
+
+git submodule init
+git submodule update
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..411626b
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+
+// pin rgb led on Seeed XIAO RP2040
+#define PIN_RGB_R 17
+#define PIN_RGB_G 16
+#define PIN_RGB_B 25
+
+int main() {
+  setup_default_uart();
+  printf("Hello, world!\n");
+
+  gpio_init(PIN_RGB_R);
+  gpio_set_dir(PIN_RGB_R, GPIO_OUT);
+  gpio_init(PIN_RGB_G);
+  gpio_set_dir(PIN_RGB_G, GPIO_OUT);
+  gpio_init(PIN_RGB_B);
+  gpio_set_dir(PIN_RGB_B, GPIO_OUT);
+  while (true)
+  {
+    gpio_put(PIN_RGB_G, 1);
+    sleep_ms(250);
+    gpio_put(PIN_RGB_R, 0);
+    sleep_ms(250);
+    gpio_put(PIN_RGB_B, 1);
+    sleep_ms(250);
+    gpio_put(PIN_RGB_G, 0);
+    sleep_ms(250);
+    gpio_put(PIN_RGB_R, 1);
+    sleep_ms(250);
+    gpio_put(PIN_RGB_B, 0);
+    sleep_ms(250);
+  }
+  return 0;
+}
+