3 files changed, 104 insertions, 0 deletions
diff --git a/power-seq-software/CMakeLists.txt b/power-seq-software/CMakeLists.txt
new file mode 100644
index 0000000..002f651
--- /dev/null
+++ b/power-seq-software/CMakeLists.txt
@@ -0,0 +1,51 @@
+# Generated Cmake Pico project file
+
+cmake_minimum_required(VERSION 3.13)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+# Initialise pico_sdk from installed location
+# (note this can come from environment, CMake cache etc)
+set(PICO_SDK_PATH "/usr/share/pico-sdk")
+
+set(PICO_BOARD pico CACHE STRING "Board type")
+
+# Pull in Raspberry Pi Pico SDK (must be before project)
+include(pico_sdk_import.cmake)
+
+# We also need PICO EXTRAS
+include($ENV{PICO_EXTRAS_PATH}/external/pico_extras_import.cmake)
+
+if (PICO_SDK_VERSION_STRING VERSION_LESS "1.4.0")
+  message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.4.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
+endif()
+
+project(power-seq-software C CXX ASM)
+
+# Initialise the Raspberry Pi Pico SDK
+pico_sdk_init()
+
+# Add executable. Default name is the project name, version 0.1
+
+add_executable(power-seq-software power-seq-software.cpp )
+
+pico_set_program_name(power-seq-software "power-seq-software")
+pico_set_program_version(power-seq-software "0.1")
+
+pico_enable_stdio_uart(power-seq-software 0)
+pico_enable_stdio_usb(power-seq-software 1)
+
+# Add the standard library to the build
+target_link_libraries(power-seq-software
+        pico_stdlib
+        hardware_sleep)
+
+# Add the standard include files to the build
+target_include_directories(power-seq-software PRIVATE
+  ${CMAKE_CURRENT_LIST_DIR}
+  ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
+)
+
+pico_add_extra_outputs(power-seq-software)
+
diff --git a/power-seq-software/flash.sh b/power-seq-software/flash.sh
new file mode 100755
index 0000000..058349d
--- /dev/null
+++ b/power-seq-software/flash.sh
@@ -0,0 +1,6 @@
+#/usr/bin/zsh
+
+sudo mount $1 /mnt
+sudo cp power-seq-software.uf2 /mnt
+sudo umount /mnt
+
diff --git a/power-seq-software/power-seq-software.cpp b/power-seq-software/power-seq-software.cpp
new file mode 100644
index 0000000..cb10215
--- /dev/null
+++ b/power-seq-software/power-seq-software.cpp
@@ -0,0 +1,47 @@
+#include <cstddef>
+#include <cstdint>
+#include <array>
+#include "pico/stdlib.h"
+#include "pico/sleep.h"
+#include "hardware/gpio.h"
+
+static constexpr std::size_t button_gpio = 6;
+static constexpr std::size_t led_gpio = 2;
+static constexpr std::array<std::size_t, 3> gpio_on_sequence { 3, 4, 5 };
+static constexpr std::array<std::size_t, 3> gpio_off_sequence { 5, 4, 3 };
+static constexpr std::size_t delay_ms = 100;
+
+int main()
+{
+    bool state = false;
+
+    // init LED
+    gpio_init(led_gpio);
+    gpio_set_dir(led_gpio, GPIO_OUT);
+    gpio_put(led_gpio, state);
+
+    // init relay GPIOs
+    for (auto const & relay : gpio_off_sequence)
+    {
+        gpio_init(relay);
+        gpio_set_dir(relay, GPIO_OUT);
+        gpio_put(relay, state);
+    }
+
+    while (true)
+    {
+        sleep_run_from_xosc();
+        sleep_goto_dormant_until_edge_high(button_gpio);
+        sleep_power_up();
+
+        state = !state;
+        gpio_put(led_gpio, state);
+
+        auto const & sequence = state ? gpio_on_sequence : gpio_off_sequence;
+        for (auto const & relay : sequence)
+        {
+            gpio_put(relay, state);
+            sleep_ms(delay_ms);
+        }
+    }
+}