|
|
@@ -0,0 +1,137 @@
|
|
|
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
|
|
|
+//
|
|
|
+// Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
+// you may not use this file except in compliance with the License.
|
|
|
+// You may obtain a copy of the License at
|
|
|
+
|
|
|
+// http://www.apache.org/licenses/LICENSE-2.0
|
|
|
+//
|
|
|
+// Unless required by applicable law or agreed to in writing, software
|
|
|
+// distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
+// See the License for the specific language governing permissions and
|
|
|
+// limitations under the License.
|
|
|
+
|
|
|
+#ifndef __ESP_DEEPSLEEP_H__
|
|
|
+#define __ESP_DEEPSLEEP_H_
|
|
|
+
|
|
|
+#include <stdint.h>
|
|
|
+
|
|
|
+#ifdef __cplusplus
|
|
|
+extern "C" {
|
|
|
+#endif
|
|
|
+
|
|
|
+/** \defgroup Deep_Sleep_API Deep Sleep API
|
|
|
+ * @brief API for putting device into deep sleep
|
|
|
+ */
|
|
|
+
|
|
|
+/** @addtogroup Deep_Sleep_API
|
|
|
+ * @{
|
|
|
+ */
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Set the chip to deep-sleep mode.
|
|
|
+ *
|
|
|
+ * The device will automatically wake up after the deep-sleep time set
|
|
|
+ * by the users. Upon waking up, the device boots up from user_init.
|
|
|
+ *
|
|
|
+ * @attention The parameter time_in_us to be "uint64" is for further development.
|
|
|
+ * Only the low 32 bits of parameter time_in_us are avalable now.
|
|
|
+ *
|
|
|
+ * @param uint64 time_in_us : deep-sleep time, only the low 32bits are avalable now. unit: microsecond
|
|
|
+ *
|
|
|
+ * @return null
|
|
|
+ */
|
|
|
+void system_deep_sleep(uint64_t time_in_us);
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Default stub to run on wake from deep sleep.
|
|
|
+ *
|
|
|
+ * Allows for executing code immediately on wake from sleep, before
|
|
|
+ * the software bootloader or esp-idf app has started up.
|
|
|
+ *
|
|
|
+ * This function is weak-linked, so you can implement your own version
|
|
|
+ * to run code immediately when the chip wakes from
|
|
|
+ * sleep.
|
|
|
+ *
|
|
|
+ * For example:
|
|
|
+ * @code
|
|
|
+ * void RTC_IRAM_ATTR esp_wake_deep_sleep(void) {
|
|
|
+ * esp_default_wake_deep_sleep();
|
|
|
+ * // Add additional functionality here
|
|
|
+ * }
|
|
|
+ *
|
|
|
+ * (Implementing this function is not required for normal operation,
|
|
|
+ * in the usual case your app will start normally when waking from
|
|
|
+ * deep sleep.)
|
|
|
+ *
|
|
|
+ * esp_wake_deep_sleep() functionality is limited:
|
|
|
+ *
|
|
|
+ * - Runs immediately on wake, so most of the SoC is freshly reset -
|
|
|
+ * flash is unmapped and hardware is otherwise uninitialised.
|
|
|
+ *
|
|
|
+ * - Can only call functions implemented in ROM, or marked RTC_IRAM_ATTR.
|
|
|
+ *
|
|
|
+ * - Static variables marked RTC_DATA_ATTR will have initial values on
|
|
|
+ * cold boot, and maintain these values between sleep/wake cycles.
|
|
|
+ *
|
|
|
+ * - Read-only data should be marked RTC_RODATA_ATTR. Strings must be
|
|
|
+ * declared as variables also using RTC_RODATA_ATTR, like this:
|
|
|
+ * RTC_RODATA_ATTR const char message[] = "Hello from very early boot!\n";
|
|
|
+ *
|
|
|
+ * - Any other static memory will not be initialised (either to zero,
|
|
|
+ * or to any predefined value).
|
|
|
+ *
|
|
|
+ *
|
|
|
+ * - If you implement your own stub, the first call the stub makes
|
|
|
+ should be to esp_default_wake_deep_sleep().
|
|
|
+ */
|
|
|
+void esp_wake_deep_sleep(void);
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Function type for stub to run on wake from sleep.
|
|
|
+ *
|
|
|
+ */
|
|
|
+typedef void (*esp_deep_sleep_wake_stub_fn_t)(void);
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Install a new stub at runtime to run on wake from deep sleep
|
|
|
+ *
|
|
|
+ * If implementing esp_wake_deep_sleep() then it is not necessary to
|
|
|
+ * call this function.
|
|
|
+ *
|
|
|
+ * However, it is possible to call this function to substitute a
|
|
|
+ * different deep sleep stub. Any function used as a deep sleep stub
|
|
|
+ * must be marked RTC_IRAM_ATTR, and must obey the same rules given
|
|
|
+ * for esp_wake_deep_sleep().
|
|
|
+ */
|
|
|
+void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub);
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Return current wake from deep sleep stub, or NULL if
|
|
|
+ * no stub is installed.
|
|
|
+ */
|
|
|
+esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void);
|
|
|
+
|
|
|
+/* The default esp-idf-provided esp_wake_deep_sleep() stub.
|
|
|
+
|
|
|
+ If you replace esp_wake_deep_sleep() in your program, or use
|
|
|
+ esp_set_deep_sleep_wake_stub(), then it is recommended you call
|
|
|
+ esp_default_wake_deep_sleep() as the first function in your stub.
|
|
|
+*/
|
|
|
+void esp_default_wake_deep_sleep(void);
|
|
|
+
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+#ifdef __cplusplus
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+#endif /* __ESP_SYSTEM_H__ */
|
Angus Gratton