feat(console): Added ping command to console component

components/console_cmd_ping/README.md

@@ -0,0 +1,55 @@
+# Console command ping
+The component provides a console where the 'ping' command can be executed.
+
+## API
+
+### Steps to enable console in an example code:
+1. Add this component to your project using ```idf.py add-dependency``` command.
+2. In the main file of the example, add the following line:
+    ```c
+    #include "console_ping.h"
+    ```
+3. Ensure esp-netif and NVS flash is initialized and default event loop is created in your app_main():
+    ```c
+    ESP_ERROR_CHECK(esp_netif_init());
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+    esp_err_t ret = nvs_flash_init();   //Initialize NVS
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK(ret);
+    ```
+4. In your app_main() function, add the following line as the last line:
+    ```c
+    ESP_ERROR_CHECK(console_cmd_init());     // Initialize console
+
+    // Register all plugin command added to your project
+    ESP_ERROR_CHECK(console_cmd_all_register());
+
+    // To register only ifconfig command skip calling console_cmd_all_register()
+    ESP_ERROR_CHECK(console_cmd_ping_register());
+
+    ESP_ERROR_CHECK(console_cmd_start());    // Start console
+    ```
+
+### Adding a plugin command or component:
+To add a plugin command or any component from IDF component manager into your project, simply include an entry within the `idf_component.yml` file.
+
+For more details refer [IDF Component Manager](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-component-manager.html)
+
+
+## Suported command:
+
+### ping:
+```
+ping  [-W <t>] [-i <t>] [-s <n>] [-c <n>] [-Q <n>] [-T <n>] <host>
+  send ICMP ECHO_REQUEST to network hosts
+  -W, --timeout=<t>  Time to wait for a response, in seconds
+  -i, --interval=<t>  Wait interval seconds between sending each packet
+  -s, --size=<n>  Specify the number of data bytes to be sent
+  -c, --count=<n>  Stop after sending count packets
+  -Q, --tos=<n>  Set Type of Service related bits in IP datagrams
+  -T, --ttl=<n>  Set Time to Live related bits in IP datagrams
+        <host>  Host address
+```