1. Change the deep sleep stub code to fix wake bug.

components/esp32/cpu_start.c

@@ -42,7 +42,6 @@
 #include "esp_spi_flash.h"
 #include "esp_ipc.h"
 #include "esp_log.h"
-#include "esp_deepsleep.h"
 
 void start_cpu0(void) __attribute__((weak, alias("start_cpu0_default")));
 void start_cpu0_default(void) IRAM_ATTR;

components/esp32/deepsleep.c

@@ -7,6 +7,7 @@
 #include "rom/cache.h"
 #include "rom/rtc.h"
 #include "soc/rtc_cntl_reg.h"
+#include "soc/dport_reg.h"
 #include "esp_attr.h"
 #include "esp_deepsleep.h"
 
@@ -39,7 +40,10 @@ void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
 }
 
 void RTC_IRAM_ATTR esp_default_wake_deep_sleep(void) {
-    mmu_init(0);
+    //
+    //mmu_init(0);
+    REG_SET_BIT(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MMU_IA_CLR);
+    REG_CLR_BIT(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MMU_IA_CLR);
 }
 
 void __attribute__((weak, alias("esp_default_wake_deep_sleep"))) esp_wake_deep_sleep(void);

components/esp32/include/rom/rtc.h

@@ -161,7 +161,7 @@ WAKEUP_REASON rtc_get_wakeup_cause(void);
   *
   * @param  uint32_t start_addr : 0 - 0x7ff for Fast RTC Memory.
   *
-  * @param  uint32_t crc_len : 0 - 0x7ff, 0 for 1 byte, 0x7ff for 0x800 byte.
+  * @param  uint32_t crc_len : 0 - 0x7ff, 0 for 4 byte, 0x7ff for 0x2000 byte.
   *
   * @return uint32_t : CRC32 result
   */