diff --git a/CMakeLists.txt b/CMakeLists.txt
index 654468e..504ba88 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,7 @@ set(COMPONENT_ADD_INCLUDEDIRS
 )
 set(COMPONENT_REQUIRES
     nvs_flash
+    mbedtls
 )
 
 register_component()
diff --git a/src/hal/hal_esp32.c b/src/hal/hal_esp32.c
index f519098..6ea4f03 100755
--- a/src/hal/hal_esp32.c
+++ b/src/hal/hal_esp32.c
@@ -19,7 +19,6 @@
 #include "freertos/semphr.h"
 #include "driver/gpio.h"
 #include "driver/spi_master.h"
-#include "driver/timer.h"
 #include "esp_timer.h"
 #include "esp_log.h"
 #include <time.h>
@@ -116,30 +115,30 @@ void init_io(void)
     ASSERT(pin_dio0 != LMIC_UNUSED_PIN);
     ASSERT(pin_dio1 != LMIC_UNUSED_PIN);
 
-    gpio_pad_select_gpio(pin_nss);
+    gpio_reset_pin(pin_nss);
     gpio_set_level(pin_nss, 0);
     gpio_set_direction(pin_nss, GPIO_MODE_OUTPUT);
 
     if (pin_rx_tx != LMIC_UNUSED_PIN)
     {
-        gpio_pad_select_gpio(pin_rx_tx);
+        gpio_reset_pin(pin_rx_tx);
         gpio_set_level(pin_rx_tx, 0);
         gpio_set_direction(pin_rx_tx, GPIO_MODE_OUTPUT);
     }
 
     if (pin_rst != LMIC_UNUSED_PIN)
     {
-        gpio_pad_select_gpio(pin_rst);
+        gpio_reset_pin(pin_rst);
         gpio_set_level(pin_rst, 0);
         gpio_set_direction(pin_rst, GPIO_MODE_OUTPUT);
     }
 
     // DIO pins with interrupt handlers
-    gpio_pad_select_gpio(pin_dio0);
+    gpio_reset_pin(pin_dio0);
     gpio_set_direction(pin_dio0, GPIO_MODE_INPUT);
     gpio_set_intr_type(pin_dio0, GPIO_INTR_POSEDGE);
 
-    gpio_pad_select_gpio(pin_dio1);
+    gpio_reset_pin(pin_dio1);
     gpio_set_direction(pin_dio1, GPIO_MODE_INPUT);
     gpio_set_intr_type(pin_dio1, GPIO_INTR_POSEDGE);