From a0fb6775e3260976926dea590c77e8ae6994aeb4 Mon Sep 17 00:00:00 2001
From: shylie <shylie@shylie.info>
Date: Tue, 8 Apr 2025 14:49:41 -0400
Subject: [PATCH] Initial commit

---
 .gitignore            |  1 +
 .gitmodules           |  6 ++++++
 CMakeLists.txt        | 21 +++++++++++++++++++
 blinky/CMakeLists.txt |  9 ++++++++
 blinky/src/main.cpp   | 48 +++++++++++++++++++++++++++++++++++++++++++
 compile_commands.json |  1 +
 lib/pico-ice-sdk      |  1 +
 7 files changed, 87 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 .gitmodules
 create mode 100644 CMakeLists.txt
 create mode 100644 blinky/CMakeLists.txt
 create mode 100644 blinky/src/main.cpp
 create mode 120000 compile_commands.json
 create mode 160000 lib/pico-ice-sdk

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ceddaa3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.cache/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c381bac
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "lib/pico-ice-sdk"]
+	path = lib/pico-ice-sdk
+	url = https://github.com/tinyvision-ai-inc/pico-ice-sdk.git
+[submodule "lib/--recurse-submodules"]
+	path = lib/--recurse-submodules
+	url = https://github.com/tinyvision-ai-inc/pico-ice-sdk.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..5d65468
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.13...3.27)
+
+set(PICO_BOARD pico2_ice)
+list(APPEND PICO_BOARD_HEADER_DIRS lib/pico-ice-sdk/include/boards)
+file(WRITE "${CMAKE_BINARY_DIR}/.gitignore" "*")
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+include(lib/pico-ice-sdk/cmake/preinit_pico_ice_sdk.cmake)
+set(PICO_SDK_PATH ${CMAKE_SOURCE_DIR}/lib/pico-ice-sdk/lib/pico-sdk)
+include(${PICO_SDK_PATH}/external/pico_sdk_import.cmake)
+
+project(pico2-ice-projects C CXX ASM)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+pico_sdk_init()
+
+add_subdirectory(lib/pico-ice-sdk)
+
+add_subdirectory(blinky)
diff --git a/blinky/CMakeLists.txt b/blinky/CMakeLists.txt
new file mode 100644
index 0000000..3cf1e74
--- /dev/null
+++ b/blinky/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.13...3.27)
+
+add_executable(blinky src/main.cpp)
+
+target_link_libraries(blinky
+  pico_ice_sdk
+  hardware_pwm
+)
+pico_add_extra_outputs(blinky)
diff --git a/blinky/src/main.cpp b/blinky/src/main.cpp
new file mode 100644
index 0000000..40753cf
--- /dev/null
+++ b/blinky/src/main.cpp
@@ -0,0 +1,48 @@
+#include <hardware/gpio.h>
+#include <hardware/irq.h>
+#include <hardware/pwm.h>
+
+void on_pwm_wrap()
+{
+  static int fade = 0;
+  static bool going_up = true;
+
+  pwm_clear_irq(pwm_gpio_to_slice_num(ICE_LED_RED_PIN));
+
+  if (going_up)
+  {
+    if (++fade > 255)
+    {
+      fade = 255;
+      going_up = false;
+    }
+  }
+  else
+  {
+    if (--fade < 0)
+    {
+      fade = 0;
+      going_up = true;
+    }
+  }
+
+  pwm_set_gpio_level(ICE_LED_RED_PIN, fade * fade);
+}
+
+int main()
+{
+  gpio_set_function(ICE_LED_RED_PIN, GPIO_FUNC_PWM);
+  uint slice_num = pwm_gpio_to_slice_num(ICE_LED_RED_PIN);
+
+  pwm_clear_irq(slice_num);
+  pwm_set_irq_enabled(slice_num, true);
+  irq_set_exclusive_handler(PWM_DEFAULT_IRQ_NUM(), on_pwm_wrap);
+  irq_set_enabled(PWM_DEFAULT_IRQ_NUM(), true);
+
+  pwm_config config = pwm_get_default_config();
+  pwm_config_set_clkdiv(&config, 1.0f);
+
+  pwm_init(slice_num, &config, true);
+
+  while (true);
+}
diff --git a/compile_commands.json b/compile_commands.json
new file mode 120000
index 0000000..25eb4b2
--- /dev/null
+++ b/compile_commands.json
@@ -0,0 +1 @@
+build/compile_commands.json
\ No newline at end of file
diff --git a/lib/pico-ice-sdk b/lib/pico-ice-sdk
new file mode 160000
index 0000000..8de8106
--- /dev/null
+++ b/lib/pico-ice-sdk
@@ -0,0 +1 @@
+Subproject commit 8de8106296b09d4db68638a7eb32280f8c09a654