diff --git a/main/can.c b/main/can.c
index d792ef8..7a779a4 100644
--- a/main/can.c
+++ b/main/can.c
@@ -14,7 +14,7 @@ static const char* LOG_TAG = "can";
 bool is_error_passive = false;
 
 SemaphoreHandle_t can_mutex;
-can_status_t curr_can_state = { 0 };
+volatile can_status_t curr_can_state = { 0 };
 
 static can_status_t get_can_state() {
     can_status_t result;
diff --git a/main/can.h b/main/can.h
index 225cd1e..9aced92 100644
--- a/main/can.h
+++ b/main/can.h
@@ -51,7 +51,7 @@ static const twai_general_config_t g_config = {
 };
 
 extern SemaphoreHandle_t can_mutex;
-extern can_status_t curr_can_state;
+extern volatile can_status_t curr_can_state;
 
 // functions
 
diff --git a/main/cmd_can.c b/main/cmd_can.c
index 693e759..efd5997 100644
--- a/main/cmd_can.c
+++ b/main/cmd_can.c
@@ -1,4 +1,5 @@
 #include "cmd_can.h"
+#include "esp_log.h"
 #include "freertos/portmacro.h"
 #include "inttypes.h"
 #include "driver/twai.h"
@@ -116,6 +117,8 @@ static int canstats(int argc, char **argv) {
 
 static int canup(int argc, char **argv) {
     esp_err_t res;
+    esp_log_level_t prev_gpio_lvl = esp_log_level_get("gpio");
+    esp_log_level_set("gpio", ESP_LOG_ERROR);
     xSemaphoreTake(can_mutex, portMAX_DELAY);
     // Install CAN driver
     // TODO: add CAN filtering
@@ -130,6 +133,7 @@ static int canup(int argc, char **argv) {
     res = twai_start();
     printf("CAN driver started\n");
     xSemaphoreGive(can_mutex);
+    esp_log_level_set("gpio", prev_gpio_lvl);
     return 0;
 }