From 1972f6c168cd8d90a20a57e79d38e5f6c6a32711 Mon Sep 17 00:00:00 2001
From: Advaith Menon <noreply-git@bp4k.net>
Date: Sun, 16 Nov 2025 02:41:42 -0500
Subject: [PATCH] Add test program for button inputs * Allow esp_driver_gpio
 privilege * Remove restart code * Add test program to read input buttons

---
 main/CMakeLists.txt     |  3 ++-
 main/hello_world_main.c | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 28ab405..3aeb4cc 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -1,3 +1,4 @@
 idf_component_register(SRCS "hello_world_main.c"
-                       PRIV_REQUIRES spi_flash
+                       INCLUDE_DIRS "."
+                       PRIV_REQUIRES spi_flash esp_driver_gpio
                        INCLUDE_DIRS "")
diff --git a/main/hello_world_main.c b/main/hello_world_main.c
index 7010f3e..08f0329 100644
--- a/main/hello_world_main.c
+++ b/main/hello_world_main.c
@@ -12,6 +12,13 @@
 #include "esp_chip_info.h"
 #include "esp_flash.h"
 #include "esp_system.h"
+#include "driver/gpio.h"
+
+#define BUTTON_WHITE 0
+#define BUTTON_GREEN 10
+#define BUTTON_YELLOW 11
+#define BUTTON_BLUE 18
+#define BUTTON_RED 15
 
 void app_main(void)
 {
@@ -42,6 +49,22 @@ void app_main(void)
 
     printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
 
+    gpio_set_direction(BUTTON_WHITE, GPIO_MODE_INPUT);
+    gpio_pullup_en(BUTTON_WHITE);
+
+    gpio_set_direction(BUTTON_GREEN, GPIO_MODE_INPUT);
+    gpio_pullup_en(BUTTON_GREEN);
+
+    gpio_set_direction(BUTTON_YELLOW, GPIO_MODE_INPUT);
+    gpio_pullup_en(BUTTON_YELLOW);
+
+    gpio_set_direction(BUTTON_BLUE, GPIO_MODE_INPUT);
+    gpio_pullup_en(BUTTON_BLUE);
+
+    gpio_set_direction(BUTTON_RED, GPIO_MODE_INPUT);
+    gpio_pullup_en(BUTTON_RED);
+
+    /*
     for (int i = 10; i >= 0; i--) {
         printf("Restarting in %d seconds...\n", i);
         vTaskDelay(1000 / portTICK_PERIOD_MS);
@@ -49,4 +72,14 @@ void app_main(void)
     printf("Restarting now.\n");
     fflush(stdout);
     esp_restart();
+    */
+    while (1) {
+        printf("Button levels: [%d|%d|%d|%d|%d]\n",
+                gpio_get_level(BUTTON_WHITE),
+                gpio_get_level(BUTTON_GREEN),
+                gpio_get_level(BUTTON_YELLOW),
+                gpio_get_level(BUTTON_BLUE),
+                gpio_get_level(BUTTON_RED));
+        vTaskDelay(500 / portTICK_PERIOD_MS);
+    }
 }
-- 
2.47.3