tests: add SAM0 ethernet test

tests/driver_sam0_eth/Makefile

@@ -0,0 +1,14 @@
+BOARD ?= same54-xpro
+
+include ../Makefile.tests_common
+
+USEMODULE += test_utils_netdev_eth_minimal
+
+# the driver to test
+USEMODULE += sam0_eth
+FEATURES_REQUIRED += periph_eth
+FEATURES_REQUIRED += cpu_samd5x # TODO: complete with other SAM0 CPUs that have ethernet
+
+INCLUDES += -I$(APPDIR)
+
+include $(RIOTBASE)/Makefile.include

tests/driver_sam0_eth/init_dev.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief   Device-specific test header file SAM0 ethernet peripheral
+ *
+ * @author  Leandro Lanzieri <leandro.lanzieri@haw-hamburg.de>
+ */
+#ifndef INIT_DEV_H
+#define INIT_DEV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NETDEV_ETH_MINIMAL_NUMOF      1
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* INIT_DEV_H */
+/** @} */

tests/driver_sam0_eth/main.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2022 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for SAM0 ethernet peripheral
+ *
+ * @author      Leandro Lanzieri <leandro.lanzieri@haw-hamburg.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "shell.h"
+#include "test_utils/netdev_eth_minimal.h"
+#include "init_dev.h"
+#include "assert.h"
+#include "net/netdev.h"
+#include "sam0_eth_netdev.h"
+
+static netdev_t sam0_eth;
+
+int netdev_eth_minimal_init_devs(netdev_event_cb_t cb) {
+
+    /* setup the specific driver */
+    sam0_eth_setup(&sam0_eth);
+
+    /* set the application-provided callback */
+    sam0_eth.event_callback = cb;
+
+    /* initialize the device driver */
+    int res = sam0_eth.driver->init(&sam0_eth);
+    assert(!res);
+
+    return 0;
+}
+
+int main(void)
+{
+    puts("Test application for SAM0 ethernet peripheral");
+
+    int res = netdev_eth_minimal_init();
+    if (res) {
+        puts("Error initializing devices");
+        return 1;
+    }
+
+    /* start the shell */
+    puts("Initialization successful - starting the shell now");
+
+    char line_buf[SHELL_DEFAULT_BUFSIZE];
+    shell_run(NULL, line_buf, SHELL_DEFAULT_BUFSIZE);
+
+    return 0;
+}