Merge branch 'feature/update_vfs_for_fatfs' into 'master'

feat(vfs): update vfs for ESP8266

See merge request sdk/ESP8266_RTOS_SDK!1317

components/esp8266/driver/uart.c

@@ -667,16 +667,12 @@ static void uart_rx_intr_handler_default(void *param)
             notify = UART_SELECT_ERROR_NOTIF;
         }
 
-#ifdef CONFIG_USING_ESP_VFS
         if (uart_event.type != UART_EVENT_MAX && p_uart->uart_select_notif_callback) {
             p_uart->uart_select_notif_callback(uart_num, notify, &task_woken);
             if (task_woken == pdTRUE) {
                 portYIELD_FROM_ISR();
             }
         }
-#else
-        (void)notify;
-#endif
 
         if (uart_event.type != UART_EVENT_MAX && p_uart->xQueueUart) {
             if (pdFALSE == xQueueSendFromISR(p_uart->xQueueUart, (void *)&uart_event, &task_woken)) {
@@ -1094,3 +1090,8 @@ esp_err_t uart_set_rx_timeout(uart_port_t uart_num, const uint8_t tout_thresh)
     UART_EXIT_CRITICAL();
     return ESP_OK;
 }
+
+bool uart_is_driver_installed(uart_port_t uart_num)
+{
+    return uart_num < UART_NUM_MAX && (p_uart_obj[uart_num] != NULL);
+}

components/esp8266/include/driver/uart.h

@@ -20,6 +20,7 @@
 extern "C" {
 #endif
 
+#include <stdbool.h>
 #include "esp_err.h"
 #include "esp_log.h"
 #include "freertos/queue.h"
@@ -553,6 +554,17 @@ esp_err_t uart_get_buffered_data_len(uart_port_t uart_num, size_t *size);
  */
 esp_err_t uart_set_rx_timeout(uart_port_t uart_num, const uint8_t tout_thresh);
 
+/**
+ * @brief Checks whether the driver is installed or not
+ *
+ * @param uart_num UART port number, the max port number is (UART_NUM_MAX -1).
+ *
+ * @return
+ *     - true  driver is installed
+ *     - false driver is not installed
+ */
+bool uart_is_driver_installed(uart_port_t uart_num);
+
 #ifdef __cplusplus
 }
 #endif