commit 9b2f64b766b469ea897c5cda695efe8af9b7f715
Author: Philippe LUC <git@pluc.fr>
Date:   Fri Feb 6 15:08:06 2026 +0100

    init

diff --git a/.envrc b/.envrc
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index 0000000..6444cbe
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,3 @@
+source /home/pluc/esp/v5.5/esp-idf/export.sh
+export PORT="/dev/serial/by-id/usb-Espressif_USB_JTAG_serial_*"
+
diff --git a/CMakeLists.txt b/CMakeLists.txt
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index 0000000..9673e51
--- /dev/null
+++ b/CMakeLists.txt
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+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.22)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+idf_build_set_property(MINIMAL_BUILD ON)
+project(hello_world)
diff --git a/README.md b/README.md
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index 0000000..62f1f7c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+
+## Init
+
+    idf.py set-target esp32c2
+
+## Build and flash
+
+    idf.py build
+    idf.py -p /dev/serial/by-id/usb-Espressif* flash
\ No newline at end of file
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
new file mode 100644
index 0000000..e1cb586
--- /dev/null
+++ b/main/CMakeLists.txt
@@ -0,0 +1,3 @@
+idf_component_register(SRCS "hello_world_main.c"
+                       PRIV_REQUIRES spi_flash esp_driver_gpio
+                       INCLUDE_DIRS "")
diff --git a/main/hello_world_main.c b/main/hello_world_main.c
new file mode 100644
index 0000000..026ac41
--- /dev/null
+++ b/main/hello_world_main.c
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+
+#include <stdio.h>
+#include <inttypes.h>
+#include "sdkconfig.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_chip_info.h"
+#include "esp_flash.h"
+#include "esp_system.h"
+#include "driver/gpio.h"
+
+#define LED_GPIO 15
+
+void app_main(void)
+{
+
+    gpio_config_t io_conf = {
+        .pin_bit_mask = LED_GPIO,
+        .mode = GPIO_MODE_OUTPUT,
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE, // No interrupt for now
+    };
+
+    esp_err_t ret = gpio_config(&io_conf);
+
+    while(1) {
+        printf("hello");
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+        gpio_set_level(LED_GPIO, 1);
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+        gpio_set_level(LED_GPIO, 0);
+    }
+}
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
new file mode 100644
index 0000000..1dff619
--- /dev/null
+++ b/sdkconfig.defaults
@@ -0,0 +1 @@
+CONFIG_ESP_CONSOLE_USB_CDC=y