From 7afb8aedd6f3553aa0ec138373aea18068abd2f8 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Mon, 30 May 2022 20:27:44 +0200
Subject: feat(minion): add print MAC address

---
 minion/src/gymnasiearbete.cpp |  5 ++++
 minion/src/wifi_module.cpp    | 54 +++++++++++++++++++++++++++++++++++++++++++
 minion/src/wifi_module.hpp    |  9 ++++++++
 3 files changed, 68 insertions(+)

(limited to 'minion/src')

diff --git a/minion/src/gymnasiearbete.cpp b/minion/src/gymnasiearbete.cpp
index 54e8d50..d2a970b 100644
--- a/minion/src/gymnasiearbete.cpp
+++ b/minion/src/gymnasiearbete.cpp
@@ -80,6 +80,11 @@ void setup()
 	Serial.print(F("IP address: "));
 	Serial.println(wifi_module.get_local_ip(local_ip));
 
+	char mac_address[MAX_NETWORK_MODULE_RESPONSE_LENGTH] = "";
+
+	Serial.print(F("MAC address: "));
+	Serial.println(wifi_module.get_mac_address(mac_address));
+
 	wifi_module.set_multiple_connections_enabled(true);
 
 	delay(MILLIS_IN_SECOND);
diff --git a/minion/src/wifi_module.cpp b/minion/src/wifi_module.cpp
index 953e9fa..8a2dd6a 100644
--- a/minion/src/wifi_module.cpp
+++ b/minion/src/wifi_module.cpp
@@ -254,6 +254,60 @@ auto WiFiModule::get_local_ip(char *local_ip_out) noexcept -> const char *
 	return local_ip_out;
 }
 
+auto WiFiModule::get_mac_address(char *mac_address_out) noexcept -> const char *
+{
+	const auto send_success = _send_serial("AT+CIFSR");
+
+	if (!send_success)
+	{
+		return mac_address_out;
+	}
+
+	auto *buf = util::malloc<char>(strlen(mac_address_out) + 1U);
+
+	if (buf == nullptr)
+	{
+		strcpy(mac_address_out, "Memory allocation failure");
+		return mac_address_out;
+	}
+
+	strcpy(buf, "");
+
+	const auto response_status = _read(10000U, buf);
+
+	if (response_status != WiFiModuleResponseStatus::OK)
+	{
+		free(buf);
+
+		sprintf(
+			mac_address_out,
+			"Response status was not OK. Was %d",
+			static_cast<int>(response_status)
+		);
+
+		return mac_address_out;
+	}
+
+	const auto stamac_title = "CIFSR:STAMAC,\"";
+
+	auto mac_address_start = strstr(buf, stamac_title);
+
+	if (mac_address_start == nullptr)
+	{
+		free(buf);
+		strcpy(mac_address_out, "Response parsing error");
+		return mac_address_out;
+	}
+
+	mac_address_start += strlen(stamac_title);
+
+	util::substr(mac_address_start, mac_address_start + 17U, mac_address_out);
+
+	free(buf);
+
+	return mac_address_out;
+}
+
 auto WiFiModule::read_incoming_request() noexcept -> HTTPRequest
 {
 	char request_prefix[] = "+IPD,";
diff --git a/minion/src/wifi_module.hpp b/minion/src/wifi_module.hpp
index 9bc2c20..da4a487 100644
--- a/minion/src/wifi_module.hpp
+++ b/minion/src/wifi_module.hpp
@@ -97,6 +97,15 @@ public:
 	 */
 	auto get_local_ip(char *local_ip_out) noexcept -> const char *;
 
+	/**
+	 * Gets the MAC address of the wifi module.
+	 *
+	 * @param mac_address_out MAC address output buffer.
+	 *
+	 * @returns A pointer to the MAC address output buffer.
+	 */
+	auto get_mac_address(char *mac_address_out) noexcept -> const char *;
+
 	/**
 	 * Reads a incoming HTTP request.
 	 *
-- 
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