esp32: fix WiFi timer inaccurate bug

Fix the bug that WiFi timer is not accurate when sleep is on

components/esp32/include/esp_wifi_internal.h

@@ -35,6 +35,7 @@
 #include "esp_err.h"
 #include "esp_wifi_types.h"
 #include "esp_event.h"
+#include "esp_wifi.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -161,6 +162,15 @@ void *wifi_realloc( void *ptr, size_t size );
   */
 void *wifi_calloc( size_t n, size_t size );
 
+/**
+  * @brief     Update WiFi MAC time
+  *
+  * @param     uint32_t time_delta : time duration since the WiFi/BT common clock is disabled
+  *
+  * @return    Always returns ESP_OK
+  */
+esp_err_t esp_wifi_internal_update_mac_time( uint32_t time_delta );
+
 #ifdef __cplusplus
 }
 #endif

components/esp32/lib

@@ -1 +1 @@
-Subproject commit 88eee0378ac6f41ea764ea38a0a1b61ff4ac0022
+Subproject commit 02d9f83f373e0d3afeac2a93cee7ad4d3cd25dce

components/esp32/phy_init.c

@@ -36,6 +36,7 @@
 #include "phy_init_data.h"
 #include "esp_coexist.h"
 #include "driver/periph_ctrl.h"
+#include "esp_wifi_internal.h"
 
 static const char* TAG = "phy_init";
 
@@ -44,6 +45,24 @@ static int s_phy_rf_init_count = 0;
 
 static _lock_t s_phy_rf_init_lock;
 
+static inline void phy_update_wifi_mac_time(bool en_clock_stopped)
+{
+    static uint32_t s_common_clock_disable_time = 0;
+
+    if (en_clock_stopped) {
+        s_common_clock_disable_time = esp_timer_get_time();
+    } else {
+        if (s_common_clock_disable_time) {
+            uint64_t now = esp_timer_get_time();
+            uint32_t diff = now - s_common_clock_disable_time;
+
+            esp_wifi_internal_update_mac_time(diff);
+            s_common_clock_disable_time = 0;
+            ESP_LOGD(TAG, "wifi mac time delta: %u", diff);
+        }
+    }
+}
+
 esp_err_t esp_phy_rf_init(const esp_phy_init_data_t* init_data,
         esp_phy_calibration_mode_t mode, esp_phy_calibration_data_t* calibration_data)
 {
@@ -51,6 +70,8 @@ esp_err_t esp_phy_rf_init(const esp_phy_init_data_t* init_data,
 
     _lock_acquire(&s_phy_rf_init_lock);
     if (s_phy_rf_init_count == 0) {
+        // Update WiFi MAC time before WiFi/BT common clock is enabled
+        phy_update_wifi_mac_time( false );
         // Enable WiFi/BT common peripheral clock
         periph_module_enable(PERIPH_WIFI_BT_COMMON_MODULE);
         ESP_LOGV(TAG, "register_chipv7_phy, init_data=%p, cal_data=%p, mode=%d",
@@ -76,6 +97,8 @@ esp_err_t esp_phy_rf_deinit(void)
     if (s_phy_rf_init_count == 1) {
         // Disable PHY and RF.
         phy_close_rf();
+        // Update WiFi MAC time before disalbe WiFi/BT common peripheral clock
+        phy_update_wifi_mac_time(true);
         // Disable WiFi/BT common peripheral clock. Do not disable clock for hardware RNG
         periph_module_disable(PERIPH_WIFI_BT_COMMON_MODULE);
     } else {