From da3ac1794e858d4430716a57962f38535dcd72b1 Mon Sep 17 00:00:00 2001
From: proddy <paul@derbyshire.nl>
Date: Sun, 14 Dec 2025 21:10:45 +0100
Subject: [PATCH] add telnet command `show gpio`

---
 src/core/console.cpp     |  2 ++
 src/core/locale_common.h |  3 ++-
 src/core/system.cpp      | 16 ++++++++++++++++
 src/core/system.h        |  4 +++-
 4 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/core/console.cpp b/src/core/console.cpp
index f7141baf0..59ab70403 100644
--- a/src/core/console.cpp
+++ b/src/core/console.cpp
@@ -100,6 +100,8 @@ static void setup_commands(std::shared_ptr<Commands> const & commands) {
                 EMSESP::show_sensor_values(shell);
             } else if (command == F_(mqtt)) {
                 Mqtt::show_mqtt(shell);
+            } else if (command == F_(gpio)) {
+                EMSESP::system_.show_gpio(shell);
             } else {
                 shell.printfln("Unknown show command");
             }
diff --git a/src/core/locale_common.h b/src/core/locale_common.h
index 3705a9d6e..71f00e681 100644
--- a/src/core/locale_common.h
+++ b/src/core/locale_common.h
@@ -55,6 +55,7 @@ MAKE_WORD(ems)
 MAKE_WORD(devices)
 MAKE_WORD(shower)
 MAKE_WORD(mqtt)
+MAKE_WORD(gpio)
 MAKE_WORD(modbus)
 MAKE_WORD(emsesp)
 MAKE_WORD(connected)
@@ -158,7 +159,7 @@ MAKE_WORD_CUSTOM(deviceid_mandatory, "<deviceID>")
 MAKE_WORD_CUSTOM(device_type_optional, "[device]")
 MAKE_WORD_CUSTOM(invalid_log_level, "Invalid log level")
 MAKE_WORD_CUSTOM(log_level_optional, "[level]")
-MAKE_WORD_CUSTOM(show_commands, "[system | users | devices | log | ems | values | mqtt | commands]")
+MAKE_WORD_CUSTOM(show_commands, "[system | users | devices | log | ems | values | mqtt | commands | gpio]")
 MAKE_WORD_CUSTOM(name_mandatory, "<name>")
 MAKE_WORD_CUSTOM(name_optional, "[name]")
 MAKE_WORD_CUSTOM(new_password_prompt1, "Enter new password: ")
diff --git a/src/core/system.cpp b/src/core/system.cpp
index 5fc3862cd..be231c9cf 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -1015,6 +1015,22 @@ void System::show_users(uuid::console::Shell & shell) {
     shell.println();
 }
 
+// print GPIO available and used pins to console
+void System::show_gpio(uuid::console::Shell & shell) {
+    shell.printfln("GPIO:");
+    shell.printf(" In use (%d):", used_gpios_.size());
+    for (const auto & gpio : used_gpios_) {
+        shell.printf(" %d", gpio);
+    }
+    shell.println();
+    auto available = available_gpios();
+    shell.printf(" Available (%d):", available.size());
+    for (const auto & gpio : available) {
+        shell.printf(" %d", gpio);
+    }
+    shell.println();
+}
+
 // shell command 'show system'
 void System::show_system(uuid::console::Shell & shell) {
     refreshHeapMem(); // refresh free heap and max alloc heap
diff --git a/src/core/system.h b/src/core/system.h
index 968d404a8..5e6fbd779 100644
--- a/src/core/system.h
+++ b/src/core/system.h
@@ -300,8 +300,10 @@ class System {
     }
 
     void show_system(uuid::console::Shell & shell);
-    void wifi_reconnect();
     void show_users(uuid::console::Shell & shell);
+    void show_gpio(uuid::console::Shell & shell);
+
+    void wifi_reconnect();
 
     static std::string languages_string();