[beken-72xx] Implement deep sleep (#140)

* Initial support code for Deep Sleep

* Global functions

* Remove unnecessary override

* clang-format

* Support for multiple pins

* Fix math

* Add a way to unset GPIOs

* Clang format

* Update brief

---------

Co-authored-by: Kuba Szczodrzyński <kuba@szczodrzynski.pl>

cores/common/base/api/lt_sleep.c

@@ -0,0 +1,11 @@
+/* Copyright (c) Peter Sarkozi 2023-06-17. */
+
+#include "lt_sleep.h"
+
+__attribute__((weak)) void lt_deep_sleep_config_gpio(uint32_t gpio_index_map, bool on_high);
+
+__attribute__((weak)) void lt_deep_sleep_unset_gpio(uint32_t gpio_index_map);
+
+__attribute__((weak)) void lt_deep_sleep_config_timer(uint32_t sleep_duration);
+
+__attribute__((weak)) void lt_deep_sleep_enter();

cores/common/base/api/lt_sleep.h

@@ -0,0 +1,31 @@
+/* Copyright (c) Peter Sarkozi 2023-06-17. */
+
+#pragma once
+
+#include <libretiny.h>
+
+/**
+ * @brief Enable GPIO Wakeup from Deep Sleep.
+ *
+ * @param gpio_index_map bitMap of the pins we should wake up on
+ * @param on_high whether to wake up on High or Low state
+ */
+void lt_deep_sleep_config_gpio(uint32_t gpio_index_map, bool on_high);
+
+/**
+ * @brief Disable GPIO Wakeup on given pins
+ *
+ * @param gpio_index_map bitMap of the pins we should disable wake up on
+ */
+void lt_deep_sleep_unset_gpio(uint32_t gpio_index_map);
+
+/**
+ * @brief Set a sleep timer to wake up the device
+ * @param sleep_duration the time in seconds to sleep
+ */
+void lt_deep_sleep_config_timer(uint32_t sleep_duration);
+
+/**
+ * @brief Start deep sleep
+ */
+void lt_deep_sleep_enter();

cores/common/base/lt_api.h

@@ -16,6 +16,7 @@ extern "C" {
 #include "api/lt_init.h"
 #include "api/lt_mem.h"
 #include "api/lt_ota.h"
+#include "api/lt_sleep.h"
 #include "api/lt_utils.h"
 #include "api/lt_wdt.h"