fw: app: Move application firmware code here

This makes the structure of the `fw` folder more clear and separates
application-related code from bootloader- or rtos-related code.

1 files changed, 75 insertions, 0 deletions

diff --git a/fw/app/src/network.c b/fw/app/src/network.c
new file mode 100644
index 0000000..6e6eb17
--- /dev/null
+++ b/fw/app/src/network.c
@@ -0,0 +1,75 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public License,
+ * v. 2.0. If a copy of the MPL was not distributed with this file, You can
+ * obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+
+#include <stdint.h>
+#include <string.h>
+
+#include <zephyr/init.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/net/hostname.h>
+#include <zephyr/net/net_if.h>
+#include <zephyr/net/net_linkaddr.h>
+#include <zephyr/net/net_mgmt.h>
+#include <zephyr/net/ethernet.h>
+#include <zephyr/net/ethernet_mgmt.h>
+#include <zephyr/sys/util.h>
+
+
+LOG_MODULE_REGISTER(network);
+
+
+#define HOSTNAME "iot-contact"
+
+
+/* will be read from an EEPROM chip in the future */
+static const uint8_t mac_address[NET_ETH_ADDR_LEN] = {0x00, 0x00, 0x5e, 0x00, 0x53, 0x01};
+
+int init_mac_address(void)
+{
+	LOG_DBG("Setting custom MAC address");
+
+	struct net_if *interface = net_if_get_default();
+
+	int ret = net_if_down(interface);
+	if (ret < 0) {
+		LOG_ERR("Failed to set interface down to set MAC address (%d)", ret);
+		return ret;
+	}
+
+	struct ethernet_req_params params = {0};
+	memcpy(params.mac_address.addr, mac_address, 6);
+	ret = net_mgmt(NET_REQUEST_ETHERNET_SET_MAC_ADDRESS, interface, &params, sizeof(params));
+	if (ret < 0) {
+		LOG_ERR("Failed to set MAC address (%d)", ret);
+		return ret;
+	}
+
+	ret = net_if_up(interface);
+	if (ret < 0) {
+		LOG_ERR("Failed to set interface up after setting MAC address (%d)", ret);
+		return ret;
+	}
+
+	LOG_INF("Successfully set MAC address");
+	return 0;
+}
+SYS_INIT(init_mac_address, APPLICATION, 0);
+
+int init_hostname(void)
+{
+	LOG_DBG("Setting hostname");
+
+	int ret = net_hostname_set(HOSTNAME, sizeof(HOSTNAME));
+	if (ret < 0) {
+		LOG_ERR("Failed to set hostname to '%s' (%d)", HOSTNAME, ret);
+		return ret;
+	}
+
+	LOG_INF("Successfully set hostname to '%s'", HOSTNAME);
+	return 0;
+}
+SYS_INIT(init_hostname, APPLICATION, 1);