first commit

CMakeLists.txt

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+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(maxxfan-controller)

main/CMakeLists.txt

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+idf_component_register(SRCS "maxxfan-controller.c"
+                    INCLUDE_DIRS ".")

main/maxxfan-controller.c

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+#include <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+
+// Define which GPIO pin to use (most ESP32 boards have LED on GPIO2)
+#define LED_PIN GPIO_NUM_13
+
+// Tag for logging
+static const char* TAG = "BLINK";
+
+void app_main(void)
+{
+    ESP_LOGI(TAG, "Starting blink example!");
+    
+    // Configure the GPIO pin as output
+    gpio_config_t io_conf = {
+        .pin_bit_mask = (1ULL << LED_PIN),  // Bit mask for the pin
+        .mode = GPIO_MODE_OUTPUT,           // Set as output mode
+        .pull_up_en = GPIO_PULLUP_DISABLE,  // Disable pull-up
+        .pull_down_en = GPIO_PULLDOWN_DISABLE, // Disable pull-down
+        .intr_type = GPIO_INTR_DISABLE      // Disable interrupt
+    };
+    
+    // Apply the configuration
+    gpio_config(&io_conf);
+    
+    ESP_LOGI(TAG, "GPIO configured! Starting blink loop...");
+    
+    // Main loop
+    while(1) {
+        // Turn LED on
+        gpio_set_level(LED_PIN, 1);
+        ESP_LOGI(TAG, "LED ON");
+        
+        // Wait 1 second
+        vTaskDelay(pdMS_TO_TICKS(1000));
+        
+        // Turn LED off
+        gpio_set_level(LED_PIN, 0);
+        ESP_LOGI(TAG, "LED OFF");
+        
+        // Wait 1 second
+        vTaskDelay(pdMS_TO_TICKS(1000));
+    }
+}