From e357de54062b8271dfef9e4dd2e5086c340b832a Mon Sep 17 00:00:00 2001
From: wuzhenghui <wuzhenghui@espressif.com>
Date: Mon, 13 Mar 2023 20:45:48 +0800
Subject: [PATCH] deep sleep: close rf to optimize sleep current

---
 components/esp_hw_support/sleep_modes.c      | 8 +++++++-
 components/esp_phy/include/esp_phy_init.h    | 6 ++++++
 components/esp_phy/src/phy_init.c            | 5 +++++
 docs/en/api-reference/system/sleep_modes.rst | 2 +-
 4 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/components/esp_hw_support/sleep_modes.c b/components/esp_hw_support/sleep_modes.c
index c4de8ae020..fd74815448 100644
--- a/components/esp_hw_support/sleep_modes.c
+++ b/components/esp_hw_support/sleep_modes.c
@@ -427,7 +427,13 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
     }
 #endif
 
-    if (!deep_sleep) {
+    if (deep_sleep) {
+        extern bool esp_phy_is_initialized(void);
+        if (esp_phy_is_initialized()){
+            extern void phy_close_rf(void);
+            phy_close_rf();
+        }
+    } else {
         misc_modules_sleep_prepare();
     }
 
diff --git a/components/esp_phy/include/esp_phy_init.h b/components/esp_phy/include/esp_phy_init.h
index bcf3e289d3..1422b43245 100644
--- a/components/esp_phy/include/esp_phy_init.h
+++ b/components/esp_phy/include/esp_phy_init.h
@@ -150,6 +150,12 @@ esp_err_t esp_phy_store_cal_data_to_nvs(const esp_phy_calibration_data_t* cal_da
  */
 esp_err_t esp_phy_erase_cal_data_in_nvs(void);
 
+/**
+ * @brief Get phy initialize status
+ * @return  return true if phy is already initialized.
+ */
+bool esp_phy_is_initialized(void);
+
 /**
  * @brief Enable PHY and RF module
  *
diff --git a/components/esp_phy/src/phy_init.c b/components/esp_phy/src/phy_init.c
index da7d11bdf3..10f9c780bd 100644
--- a/components/esp_phy/src/phy_init.c
+++ b/components/esp_phy/src/phy_init.c
@@ -219,6 +219,11 @@ static inline void phy_digital_regs_load(void)
     }
 }
 
+bool esp_phy_is_initialized(void)
+{
+    return s_is_phy_calibrated;
+}
+
 void esp_phy_enable(void)
 {
     _lock_acquire(&s_phy_access_lock);
diff --git a/docs/en/api-reference/system/sleep_modes.rst b/docs/en/api-reference/system/sleep_modes.rst
index f40ab7b619..a00e5e616a 100644
--- a/docs/en/api-reference/system/sleep_modes.rst
+++ b/docs/en/api-reference/system/sleep_modes.rst
@@ -31,7 +31,7 @@ Once wakeup sources are configured, application can enter sleep mode using :cpp:
     WiFi/BT and sleep modes
     -----------------------
 
-    In deep sleep and light sleep modes, wireless peripherals are powered down. Before entering deep sleep or light sleep modes, applications must disable WiFi and BT using appropriate calls (:cpp:func:`esp_bluedroid_disable`, :cpp:func:`esp_bt_controller_disable`, :cpp:func:`esp_wifi_stop`). WiFi and BT connections will not be maintained in deep sleep or light sleep, even if these functions are not called.
+    In deep sleep and light sleep modes, wireless peripherals are powered down. Before entering light sleep modes, applications must disable WiFi and BT using appropriate calls (:cpp:func:`esp_bluedroid_disable`, :cpp:func:`esp_bt_controller_disable`, :cpp:func:`esp_wifi_stop`). WiFi and BT connections will not be maintained in deep sleep or light sleep, even if these functions are not called.
 
 .. only:: not SOC_BT_SUPPORTED