chore: import local project into Gitea

p4_gemini_chat/.vscode/settings.json

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+{
+    "idf.openOcdConfigs": [
+        "board/esp32p4-builtin.cfg"
+    ]
+}

p4_gemini_chat/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(p4_gemini_chat)

p4_gemini_chat/Kconfig.projbuild

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+menu "Gemini Chat Config"
+config GEMINI_API_KEY
+    string "Gemini API Key"
+    help
+        Paste the API key from Google AI Studio.
+config WIFI_SSID
+    string "WiFi SSID"
+config WIFI_PASS
+    string "WiFi Password"
+config GEMINI_MODEL
+    string "Gemini model name"
+    default "gemini-2.5-flash"
+endmenu

p4_gemini_chat/build.bat

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+call C:/Users/india/Desktop/esp-idf/export.bat
+idf.py build

p4_gemini_chat/dependencies.lock

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+dependencies:
+  idf:
+    source:
+      type: idf
+    version: 5.4.1
+  lvgl/lvgl:
+    component_hash: 948bff879a345149b83065535bbc4a026ce9f47498a22881e432a264b9098015
+    dependencies: []
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 8.3.11
+direct_dependencies:
+- idf
+- lvgl/lvgl
+manifest_hash: ba5fbe24af6b54c310e2fcf43426ef3f04e9de1ac47206b696b1bb81856e9340
+target: esp32
+version: 2.0.0

p4_gemini_chat/main/CMakeLists.txt

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+idf_component_register(
+  SRCS "main.c"
+  REQUIRES esp_http_client esp_wifi nvs_flash json lvgl esp_timer
+)

p4_gemini_chat/main/idf_component.yml

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+## IDF Component Manager Manifest File
+dependencies:
+  ## Required IDF version
+  idf:
+    version: '>=4.1.0'
+  # # Put list of dependencies here
+  # # For components maintained by Espressif:
+  # component: "~1.0.0"
+  # # For 3rd party components:
+  # username/component: ">=1.0.0,<2.0.0"
+  # username2/component2:
+  #   version: "~1.0.0"
+  #   # For transient dependencies `public` flag can be set.
+  #   # `public` flag doesn't have an effect dependencies of the `main` component.
+  #   # All dependencies of `main` are public by default.
+  #   public: true
+  lvgl/lvgl: ~8.3.11

p4_gemini_chat/main/main.c

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+#include "esp_event.h"
+#include "nvs_flash.h"
+#include "esp_wifi.h"
+#include "esp_netif.h"
+#include "esp_http_client.h"
+#include "esp_crt_bundle.h"
+#include "cJSON.h"
+#include "lvgl.h"
+#include "esp_timer.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+#include "bsp.h"
+#include <string.h>
+
+#define TAG "P4-GEMINI"
+
+// ----- Kconfig bindings
+#define WIFI_SSID       CONFIG_WIFI_SSID
+#define WIFI_PASS       CONFIG_WIFI_PASS
+#define GEMINI_API_KEY  CONFIG_GEMINI_API_KEY
+#define GEMINI_MODEL    CONFIG_GEMINI_MODEL
+
+// Simple UI elements
+static lv_obj_t *ta;     // text area (user input)
+static lv_obj_t *logbox; // label for responses
+
+// Cheap LVGL tick (adjust to your BSP pattern)
+static void lv_tick_cb(void* arg){ lv_tick_inc(5); }
+
+static void wifi_init(void) {
+    ESP_ERROR_CHECK(esp_netif_init());
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+    esp_netif_create_default_wifi_sta();
+
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+
+    wifi_config_t wifi_config = {0};
+    strncpy((char*)wifi_config.sta.ssid, WIFI_SSID, sizeof(wifi_config.sta.ssid)-1);
+    strncpy((char*)wifi_config.sta.password, WIFI_PASS, sizeof(wifi_config.sta.password)-1);
+
+    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
+    ESP_ERROR_CHECK(esp_wifi_start());
+    ESP_ERROR_CHECK(esp_wifi_connect());
+}
+
+// Build {"contents":[{"role":"user","parts":[{"text":"..."}]}]}
+static char* build_gemini_body(const char* user_text) {
+    cJSON *root = cJSON_CreateObject();
+    cJSON *contents = cJSON_AddArrayToObject(root, "contents");
+    cJSON *item = cJSON_CreateObject();
+    cJSON_AddStringToObject(item, "role", "user");
+    cJSON *parts = cJSON_AddArrayToObject(item, "parts");
+    cJSON *part0 = cJSON_CreateObject();
+    cJSON_AddStringToObject(part0, "text", user_text);
+    cJSON_AddItemToArray(parts, part0);
+    cJSON_AddItemToArray(contents, item);
+    char *out = cJSON_PrintUnformatted(root);
+    cJSON_Delete(root);
+    return out;
+}
+
+// Parse response.response.candidates[0].content.parts[0].text
+static char* parse_gemini_reply(const char* json) {
+    cJSON *root = cJSON_Parse(json);
+    if(!root) return NULL;
+    cJSON *resp = cJSON_GetObjectItem(root, "candidates");
+    if(!cJSON_IsArray(resp) || cJSON_GetArraySize(resp)==0){ cJSON_Delete(root); return NULL; }
+    cJSON *c0 = cJSON_GetArrayItem(resp, 0);
+    cJSON *content = cJSON_GetObjectItem(c0, "content");
+    cJSON *parts = content ? cJSON_GetObjectItem(content, "parts") : NULL;
+    if(!parts || !cJSON_IsArray(parts) || cJSON_GetArraySize(parts)==0){ cJSON_Delete(root); return NULL; }
+    cJSON *p0 = cJSON_GetArrayItem(parts, 0);
+    cJSON *text = cJSON_GetObjectItem(p0, "text");
+    char *dup = text && cJSON_IsString(text) ? strdup(text->valuestring) : NULL;
+    cJSON_Delete(root);
+    return dup;
+}
+
+static esp_err_t http_event(esp_http_client_event_t *evt){
+    return ESP_OK;
+}
+
+static char* gemini_generate(const char* prompt){
+    // Use TLS bundle (no manual root CA pin)
+    esp_http_client_config_t cfg = {
+        .url = "https://generativelanguage.googleapis.com/v1beta/models/" GEMINI_MODEL ":generateContent?key=" GEMINI_API_KEY,
+        .method = HTTP_METHOD_POST,
+        .crt_bundle_attach = esp_crt_bundle_attach,
+        .event_handler = http_event,
+        .timeout_ms = 20000,
+    };
+    esp_http_client_handle_t client = esp_http_client_init(&cfg);
+
+    char *body = build_gemini_body(prompt);
+    esp_http_client_set_header(client, "Content-Type", "application/json");
+    ESP_ERROR_CHECK(esp_http_client_open(client, strlen(body)));
+    int w = esp_http_client_write(client, body, strlen(body));
+    free(body);
+    if(w <= 0){ esp_http_client_cleanup(client); return strdup("[write failed]"); }
+
+    esp_http_client_fetch_headers(client);
+    int status = esp_http_client_get_status_code(client);
+    ESP_LOGI(TAG, "HTTP Status = %d", status);
+
+    int len = esp_http_client_get_content_length(client);
+    if(len < 0) len = 4096; // fallback
+    char *buf = calloc(1, len+1);
+    int r = esp_http_client_read_response(client, buf, len);
+    esp_http_client_close(client);
+    esp_http_client_cleanup(client);
+
+    if(r <= 0){ 
+        free(buf); 
+        return strdup("[no response]"); 
+    }
+    
+    char *reply = parse_gemini_reply(buf);
+    if(!reply) {
+        ESP_LOGE(TAG, "Failed to parse JSON response: %s", buf);
+        reply = strdup("[parse error]");
+    }
+    
+    free(buf);
+    return reply;
+}
+
+// Task to call Gemini API
+static void gemini_task(void *pvParameters) {
+    char *prompt = (char *)pvParameters;
+    char *ans = gemini_generate(prompt);
+
+    // Update UI from the main thread context if possible, for now direct update
+    // For robust applications, use a queue to pass data to the main loop
+    lv_label_set_text_fmt(logbox, "You:\n%s\n\nAI:\n%s", prompt, ans ? ans : "(null)");
+
+    free(prompt); // Free the duplicated prompt string
+    free(ans);
+    vTaskDelete(NULL); // Delete the task
+}
+
+// UI handler: send prompt -> show reply
+static void on_send(lv_event_t *e){
+    const char *user = lv_textarea_get_text(ta);
+    if(!user || strlen(user)==0) return;
+    lv_label_set_text_fmt(logbox, "You:\n%s\n\nAI:\n[thinking...]", user);
+    
+    // Duplicate the user text for the task
+    char *prompt_copy = strdup(user);
+
+    // Create a task to handle the Gemini call
+    xTaskCreate(gemini_task, "gemini_task", 8192, prompt_copy, 5, NULL);
+}
+
+static void ui_init(void){
+    // You already have BSP display/touch init in your Waveshare demos; call that first.
+    // Here we only do the LVGL widgets.
+
+    // Basic container
+    lv_obj_t *scr = lv_scr_act();
+    ta = lv_textarea_create(scr);
+    lv_obj_set_size(ta, 700, 120);
+    lv_obj_set_pos(ta, 10, 10);
+    lv_textarea_set_placeholder_text(ta, "Ask something…");
+
+    lv_obj_t *btn = lv_btn_create(scr);
+    lv_obj_set_size(btn, 140, 60);
+    lv_obj_set_pos(btn, 10, 140);
+    lv_obj_add_event_cb(btn, on_send, LV_EVENT_CLICKED, NULL);
+    lv_obj_t *lbl = lv_label_create(btn);
+    lv_label_set_text(lbl, "Send");
+    lv_obj_center(lbl);
+
+    logbox = lv_label_create(scr);
+    lv_obj_set_size(logbox, 700, 520);
+    lv_obj_set_pos(logbox, 10, 210);
+    lv_label_set_long_mode(logbox, LV_LABEL_LONG_WRAP);
+    lv_label_set_text(logbox, "Ready.");
+}
+
+void app_main(void){
+    // NVS (Wi-Fi stores creds; not strictly needed if Kconfig only)
+    ESP_ERROR_CHECK(nvs_flash_init());
+    // Wi-Fi
+    wifi_init();
+
+    // Initialize display and touch
+    bsp_display_start();
+
+    // LVGL core tick
+    lv_init();
+    const esp_timer_create_args_t tcfg = { .callback = lv_tick_cb, .name = "lv_tick" };
+    esp_timer_handle_t tmr; esp_timer_create(&tcfg, &tmr);
+    esp_timer_start_periodic(tmr, 5000); // 5ms
+
+    ui_init();
+
+    // Simple LVGL loop (replace with your panel’s event/task loop)
+    while (1) { lv_timer_handler(); vTaskDelay(pdMS_TO_TICKS(5)); }
+}