feat(common_examples): Add common examples aplicable for all phys

.github/workflows/ethernet_init_build.yml → .github/workflows/common_examples_build.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         idf_ver: ["latest"]
-        example: ["simple-ethernet"]
+        example: ["simple-ethernet", "iperf", "tcp_server"]
         idf_target: ["esp32"]
     runs-on: ubuntu-20.04
     container: espressif/idf:${{ matrix.idf_ver }}
@@ -23,5 +23,5 @@ jobs:
         run: |
           . ${IDF_PATH}/export.sh
           pip install idf-build-apps
-          cd $GITHUB_WORKSPACE/esp_eth_drivers/ethernet_init/examples/${{ matrix.example }}
+          cd $GITHUB_WORKSPACE/esp_eth_drivers/common_examples/${{ matrix.example }}
           idf-build-apps build -p . --target ${{ matrix.idf_target }} --build-dir build_@t_@w --config 'sdkconfig.defaults.*='

.gitignore

@@ -32,6 +32,28 @@ GPATH
 **/examples/**/sdkconfig.old
 **/examples/**/build
 **/examples/**/managed_components
+common_examples/**/sdkconfig
+common_examples/**/sdkconfig.old
+common_examples/**/build
+common_examples/**/managed_components
+
+# Project files
+**/sdkconfig
+**/sdkconfig.old
+**/build
+**/managed_components
+
+# Project files
+**/sdkconfig
+**/sdkconfig.old
+**/build
+**/managed_components
+
+# Project files
+**/sdkconfig
+**/sdkconfig.old
+**/build
+**/managed_components
 
 # Doc build artifacts
 docs/_build/

common_examples/iperf/CMakeLists.txt

@@ -0,0 +1,8 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(iperf)

common_examples/iperf/README.md

@@ -0,0 +1,12 @@
+# Iperf example
+
+This exmaple provides a simple way to measure network performance using iperf.
+
+## About the example
+The example uses `iperf` and `iperf-cmd` components for an iperf implementation and provides command line interface for it. It provides DHCP server functionality for connecting to another ESP32, instead of a PC.
+
+## Configuring the example
+Using `idf.py menuconfig` set up the Ethernet configuration, in the `Example option` you can enable DHCP server with `Act as a DHCP server`. This will make ESP32 run an instance of DHCP server per interface assignign IP addresses in the subnet 192.168.1.0/24.
+
+## Running the example
+You will see `esp>` prompt appear in ESP32 console. Run `iperf -h` to see iperf command options.

common_examples/iperf/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "iperf.c"
+                    INCLUDE_DIRS ".")

common_examples/iperf/main/Kconfig.projbuild

@@ -0,0 +1,7 @@
+menu "Example options"
+    config EXAMPLE_ACT_AS_DHCP_SERVER
+        bool "Act as a DHCP server"
+        default n
+        help
+            Set ESP32 to act as DHCP server instead of as a client.
+endmenu

common_examples/iperf/main/idf_component.yml

@@ -0,0 +1,5 @@
+dependencies:
+  espressif/ethernet_init:
+    override_path: '../../../ethernet_init/'
+  espressif/iperf-cmd: "^0.1.1"
+  espressif/iperf: "^0.1.1"

common_examples/iperf/main/iperf.c

@@ -0,0 +1,79 @@
+#include "esp_netif.h"
+#include "esp_eth.h"
+#include "esp_event.h"
+#include "esp_console.h"
+#include "ethernet_init.h"
+#include "iperf_cmd.h"
+#include "sdkconfig.h"
+
+esp_netif_ip_info_t ip_info = {
+    .ip = {.addr = ESP_IP4TOADDR(192, 168, 1, 1)},
+    .netmask = {.addr =  ESP_IP4TOADDR(255, 255, 255, 0)},
+    .gw = {.addr = ESP_IP4TOADDR(192, 168, 1, 1)}
+};
+
+static void start_dhcp_server_at_connection(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data)
+{
+    esp_netif_dhcpc_stop(esp_netif);
+    esp_netif_set_ip_info(esp_netif, &ip_info);
+    esp_netif_dhcps_start(esp_netif);
+}
+
+void app_main(void)
+{
+    uint8_t eth_port_cnt = 0;
+    esp_eth_handle_t *eth_handles;
+    esp_netif_config_t cfg;
+    esp_netif_inherent_config_t eth_netif_cfg;
+    esp_netif_init();
+    esp_event_loop_create_default();
+    ethernet_init_all(&eth_handles, &eth_port_cnt);
+
+#if CONFIG_EXAMPLE_ACT_AS_DHCP_SERVER
+    // Config for ESP32 to act as DHCP server
+    eth_netif_cfg = (esp_netif_inherent_config_t) {
+        .get_ip_event = IP_EVENT_ETH_GOT_IP,
+        .lost_ip_event = 0,
+        .flags = ESP_NETIF_DHCP_SERVER,
+        .ip_info = &ip_info,
+        .if_key = "ETH_DHCPS",
+        .if_desc = "eth",
+        .route_prio = 50
+    };
+#else
+    if (eth_port_cnt == 1) {
+        // Use default config when using one interface
+        eth_netif_cfg = *(ESP_NETIF_BASE_DEFAULT_ETH);
+    } else {
+        // Set behavioral config to support multiple interfaces
+        eth_netif_cfg = (esp_netif_inherent_config_t) ESP_NETIF_INHERENT_DEFAULT_ETH();
+    }
+#endif
+    char if_key_str[10];
+    char if_desc_str[10];
+    cfg = (esp_netif_config_t) {
+        .base = &eth_netif_cfg,
+        .stack = ESP_NETIF_NETSTACK_DEFAULT_ETH
+    };
+    for (int i = 0; i < eth_port_cnt; i++) {
+        sprintf(if_key_str, "ETH_%d", i);
+        sprintf(if_desc_str, "eth%d", i);
+        eth_netif_cfg.if_key = if_key_str;
+        eth_netif_cfg.if_desc = if_desc_str;
+        eth_netif_cfg.route_prio -= i * 5;
+        esp_netif_t *eth_netif = esp_netif_new(&cfg);
+        ESP_ERROR_CHECK(esp_netif_attach(eth_netif, esp_eth_new_netif_glue(eth_handles[i])));
+
+#if CONFIG_EXAMPLE_ACT_AS_DHCP_SERVER
+        esp_event_handler_register(ETH_EVENT, ETHERNET_EVENT_CONNECTED, start_dhcp_server_at_connection, eth_netif);
+#endif
+
+        esp_eth_start(eth_handles[i]);
+    }
+    esp_console_repl_t *repl = NULL;
+    esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
+    esp_console_dev_uart_config_t uart_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT();
+    esp_console_new_repl_uart(&uart_config, &repl_config, &repl);
+    app_register_iperf_commands();
+    esp_console_start_repl(repl);
+}

common_examples/iperf/sdkconfig.defaults.client

@@ -0,0 +1 @@
+CONFIG_EXAMPLE_ACT_AS_DHCP_SERVER=n

common_examples/iperf/sdkconfig.defaults.server

@@ -0,0 +1 @@
+CONFIG_EXAMPLE_ACT_AS_DHCP_SERVER=y

ethernet_init/examples/simple-ethernet/main/idf_component.yml → common_examples/simple-ethernet/main/idf_component.yml

@@ -4,4 +4,4 @@ dependencies:
   ethernet_init:
     version: '*'
     # For local development use the local copy of the component
-    override_path: '../../../'
+    override_path: '../../../ethernet_init/'

common_examples/tcp_client/CMakeLists.txt

@@ -0,0 +1,8 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(tcp_client)

common_examples/tcp_client/README.md

@@ -0,0 +1,20 @@
+# TCP client example
+
+This example provides a basic implementation of TCP client for ESP32 with drivers from this repository
+
+## About the example
+TCP client is designed to periodically transmit to the server, and accept responses, which are printed to the console.
+
+## Configuring the example
+Configure the example using `idf.py menuconfig`, according to your setup, provide settings for Ethernet initialization. Next, go to `Example options` and input the IP address of your PC in the local network to which ESP32 is connected. If you want to connect this to another ESP32 device running `tcp_server` example, make sure to the the `Server IP address` to 196.168.1.1
+
+## Running the example
+
+After you obtain an IP address you will see a message reading `TCP client is started, waiting for the server to accept a connection.`. 
+
+If you are connecting the device to a PC - start the server with `tcp_server.py`. The command to do so is `tcp_server.py IP` to start listening on the specified IP address.
+
+**Important**: use the IP address of your PC in the local network to which ESP32 is connected. It **must** match the IP address you've set in the `Example options`.
+
+
+You will see incoming messages in ESP32 console or as an as output of `tcp_server.py` if you have ran it.

common_examples/tcp_client/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "tcp_client.c"
+                    INCLUDE_DIRS ".")

common_examples/tcp_client/main/Kconfig.projbuild

@@ -0,0 +1,7 @@
+menu "Example options"
+    config EXAMPLE_SERVER_IP_ADDRESS
+        string "Server IP address"
+        default "192.168.1.1"
+        help
+            TCP server IP.
+endmenu

common_examples/tcp_client/main/idf_component.yml

@@ -0,0 +1,7 @@
+dependencies:
+  idf:
+    version: '>=5.0'
+  ethernet_init:
+    version: '*'
+    # For local development use the local copy of the component
+    override_path: '../../../ethernet_init/'

common_examples/tcp_client/main/tcp_client.c

@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <string.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_netif.h"
+#include "esp_eth.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "ethernet_init.h"
+#include "lwip/sockets.h"
+#include "sdkconfig.h"
+
+#define SOCKET_PORT         5000
+#define SOCKET_MAX_LENGTH   128
+
+static const char *TAG = "tcp_client";
+static SemaphoreHandle_t x_got_ip_semaphore;
+
+/** Event handler for IP_EVENT_ETH_GOT_IP */
+static void got_ip_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *data)
+{
+    ip_event_got_ip_t *event = (ip_event_got_ip_t *) data;
+    const esp_netif_ip_info_t *ip_info = &event->ip_info;
+
+    ESP_LOGI(TAG, "Ethernet Got IP Address");
+    ESP_LOGI(TAG, "~~~~~~~~~~~");
+    ESP_LOGI(TAG, "ETHIP:" IPSTR, IP2STR(&ip_info->ip));
+    ESP_LOGI(TAG, "ETHMASK:" IPSTR, IP2STR(&ip_info->netmask));
+    ESP_LOGI(TAG, "ETHGW:" IPSTR, IP2STR(&ip_info->gw));
+    ESP_LOGI(TAG, "~~~~~~~~~~~");
+    xSemaphoreGive(x_got_ip_semaphore);
+}
+
+void app_main(void)
+{
+    // Create default event loop that running in background
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+    // Initialize semaphore
+    x_got_ip_semaphore = xSemaphoreCreateBinary();
+    // Initialize Ethernet driver
+    uint8_t eth_port_cnt = 0;
+    esp_eth_handle_t *eth_handles;
+    char if_key_str[10];
+    char if_desc_str[10];
+    ESP_ERROR_CHECK(ethernet_init_all(&eth_handles, &eth_port_cnt));
+    esp_netif_init();
+    // Register user defined event handers
+    ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, &got_ip_event_handler, NULL));
+    // Create instance(s) of esp-netif for Ethernet(s)
+    if (eth_port_cnt == 1) {
+        // Use ESP_NETIF_DEFAULT_ETH when just one Ethernet interface is used and you don't need to modify
+        // default esp-netif configuration parameters.
+        esp_netif_config_t cfg = ESP_NETIF_DEFAULT_ETH();
+        esp_netif_t *eth_netif = esp_netif_new(&cfg);
+        // Attach Ethernet driver to TCP/IP stack
+        ESP_ERROR_CHECK(esp_netif_attach(eth_netif, esp_eth_new_netif_glue(eth_handles[0])));
+    } else {
+        // Use ESP_NETIF_INHERENT_DEFAULT_ETH when multiple Ethernet interfaces are used and so you need to modify
+        // esp-netif configuration parameters for each interface (name, priority, etc.).
+        esp_netif_inherent_config_t esp_netif_config = ESP_NETIF_INHERENT_DEFAULT_ETH();
+        esp_netif_config_t cfg_spi = {
+            .base = &esp_netif_config,
+            .stack = ESP_NETIF_NETSTACK_DEFAULT_ETH
+        };
+
+        for (int i = 0; i < eth_port_cnt; i++) {
+            sprintf(if_key_str, "ETH_%d", i);
+            sprintf(if_desc_str, "eth%d", i);
+            esp_netif_config.if_key = if_key_str;
+            esp_netif_config.if_desc = if_desc_str;
+            esp_netif_config.route_prio -= i * 5;
+            esp_netif_t *eth_netif = esp_netif_new(&cfg_spi);
+
+            // Attach Ethernet driver to TCP/IP stack
+            ESP_ERROR_CHECK(esp_netif_attach(eth_netif, esp_eth_new_netif_glue(eth_handles[i])));
+            esp_eth_start(eth_handles[i]);
+        }
+    }
+    // Wait until IP address is assigned to this device
+    xSemaphoreTake(x_got_ip_semaphore, portMAX_DELAY);
+    ESP_LOGI(TAG, "TCP client is started, waiting for the server to accept a connection.");
+    int client_fd;
+    struct sockaddr_in server;
+    char rxbuffer[SOCKET_MAX_LENGTH] = {0};
+    char txbuffer[SOCKET_MAX_LENGTH] = {0};
+    client_fd = socket(AF_INET, SOCK_STREAM, 0);
+    server.sin_family = AF_INET;
+    server.sin_port = htons(SOCKET_PORT);
+    server.sin_addr.s_addr = inet_addr(CONFIG_EXAMPLE_SERVER_IP_ADDRESS);
+    ESP_ERROR_CHECK(connect(client_fd, (struct sockaddr *)&server, sizeof(struct sockaddr)));
+    int transmission_cnt = 0;
+    while (1) {
+        snprintf(txbuffer, SOCKET_MAX_LENGTH, "Transmission #%d. Hello from ESP32 TCP client", ++transmission_cnt);
+        ESP_LOGI(TAG, "Transmitting: \"%s\"", txbuffer);
+        write(client_fd, txbuffer, SOCKET_MAX_LENGTH);
+        read(client_fd, rxbuffer, SOCKET_MAX_LENGTH);
+        ESP_LOGI(TAG, "Received \"%s\"", rxbuffer);
+        memset(txbuffer, 0, SOCKET_MAX_LENGTH);
+        memset(rxbuffer, 0, SOCKET_MAX_LENGTH);
+        vTaskDelay(pdMS_TO_TICKS(500));
+    }
+}

common_examples/tcp_client/tcp_server.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+import socket
+import argparse
+import logging
+import signal
+
+parser = argparse.ArgumentParser(description='Serve TCP connection using berkley sockets and wait for connections', epilog='Part of the tcp_client example for esp_eth_drivers')
+parser.add_argument('ip')
+args = parser.parse_args()
+
+SOCKET_PORT = 5000
+
+# setup sigint handler
+signal.signal(signal.SIGINT, lambda s, f : exit(0))
+
+logger = logging.getLogger("tcp_server")
+logging.basicConfig(format="%(name)s :: %(levelname)-8s :: %(message)s", level=logging.DEBUG)
+logger.info("Listening on %s:%d", args.ip, SOCKET_PORT)
+
+# init server
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.bind((args.ip, 5000))
+# listen for incoming connections
+sock.listen(1)
+
+counter = 1
+while True:
+    conn, address = sock.accept()
+    logger.debug("Accepted connection from %s:%d", address[0], address[1])
+    while True:
+        try:
+            data = conn.recv(128).decode()
+        except ConnectionAbortedError:
+            logger.info("Connection closed by client")
+            break
+        logger.debug("Received: \"%s\"", data)
+        msg = f"Transmission {counter}: Hello from Python"
+        logger.debug("Transmitting: \"%s\"", msg)
+        conn.sendall(str.encode(msg))
+        counter += 1

common_examples/tcp_server/CMakeLists.txt

@@ -0,0 +1,10 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+set(COMPONENT main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(tcp_server)