Add poweroff function & status LED. Include 3D files for Seeed XIAO

3D/Base.step

@@ -0,0 +1,661 @@
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+NAMED_UNIT(*)
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+SI_UNIT($,.RADIAN.)
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+SI_UNIT($,.STERADIAN.)
+SOLID_ANGLE_UNIT()
+);
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+#592=PRODUCT_DEFINITION('Base','Base',#593,#591);
+#593=PRODUCT_DEFINITION_FORMATION('',$,#598);
+#594=PRODUCT_RELATED_PRODUCT_CATEGORY('Base','Base',(#598));
+#595=APPLICATION_PROTOCOL_DEFINITION('international standard',
+'automotive_design',2009,#596);
+#596=APPLICATION_CONTEXT(
+'Core Data for Automotive Mechanical Design Process');
+#597=PRODUCT_CONTEXT('part definition',#596,'mechanical');
+#598=PRODUCT('Base','Base',$,(#597));
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+#602=SURFACE_STYLE_FILL_AREA(#603);
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+#604=FILL_AREA_STYLE_COLOUR('Steel - Satin',#605);
+#605=COLOUR_RGB('Steel - Satin',0.627450980392157,0.627450980392157,0.627450980392157);
+ENDSEC;
+END-ISO-10303-21;

main/Kconfig

@@ -1,15 +1,20 @@
 menu "espScope Configuration"
+    config LED_BUILTIN
+        int "LED IO Pin"
+        default 15
+        help
+            LED IO pin
 
     config ESP_WIFI_SSID
         string "WiFi SSID"
         default "myssid"
         help
-            SSID (network name) to connect to.
+            Default SSID (network name) to connect to. You can change this onece connected via the web interface.
 
     config ESP_WIFI_PASSWORD
         string "WiFi Password"
         default "mypassword"
         help
-            WiFi password.
+            Default SSID password. You can change this onece connected via the web interface.
 
 endmenu

main/index.html

@@ -111,13 +111,14 @@
             direction: rtl;
         }
 
-        #resetBtn {
+        #resetBtn, #powerOff {
             background: #222;
             color: #e66;
             border: 1px solid;
             font-size: 0.8rem;
             height: 4em;
             width: 6em;
+            vertical-align: middle;
         }
     </style>
 </head>
@@ -168,7 +169,10 @@
                         <input type="number" id="testHz" value="100" min="1" max="10000">
                     </div>
                 </div>
+                <div>
                     <button id="resetBtn">Reset</button>
+                    <button id="powerOff">Power off</button>
+                </div>
             </form>
         </div>
 

main/index.js

@@ -452,6 +452,9 @@ document.getElementById('resetBtn').addEventListener('click', () => {
   localStorage.clear();
   window.location.reload();
 });
+document.getElementById('powerOff').addEventListener('click', () => {
+  navigator.sendBeacon("/poweroff");
+});
 setParams();
 connect();
 

main/main.c

@@ -1,3 +1,9 @@
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
 #include "cJSON.h"
 #include "driver/gpio.h"
 #include "driver/ledc.h"
@@ -5,20 +11,16 @@
 #include "esp_event.h"
 #include "esp_http_server.h"
 #include "esp_log.h"
+#include "esp_sleep.h"
 #include "esp_system.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/event_groups.h"
 #include "freertos/task.h"
 #include "nvs_flash.h"
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
 
 // Tag for logging
-static const char *TAG = "ESP-SCOPE";
+static const char* TAG = "ESP-SCOPE";
 
 // WiFi configuration from Kconfig
 /* See untracked wifi-credentials.h */
@@ -65,7 +67,6 @@ static httpd_handle_t s_server = NULL;
 
 static adc_continuous_handle_t adc_handle = NULL;
 
-
 // Single client support for simplicity, or use a list for multiple
 static int s_ws_client_fd = -1;
 
@@ -78,15 +79,15 @@ static uint16_t s_test_hz = 100;
 
 // Forward declarations
 static void wifi_init_sta(void);
-static void continuous_adc_init(adc_channel_t *channel, uint8_t channel_num,
+static void continuous_adc_init(adc_channel_t* channel, uint8_t channel_num,
-                                adc_continuous_handle_t *out_handle);
+                                adc_continuous_handle_t* out_handle);
-static esp_err_t ws_handler(httpd_req_t *req);
+static esp_err_t ws_handler(httpd_req_t* req);
 
 // Forward declarations
 static void wifi_init_sta(void);
-static void continuous_adc_init(adc_channel_t *channel, uint8_t channel_num,
+static void continuous_adc_init(adc_channel_t* channel, uint8_t channel_num,
-                                adc_continuous_handle_t *out_handle);
+                                adc_continuous_handle_t* out_handle);
-static esp_err_t ws_handler(httpd_req_t *req);
+static esp_err_t ws_handler(httpd_req_t* req);
 
 // Helper to calculate optimal buffer size (approx 50ms latency, max 4096, aligned to 4)
 static uint32_t get_optimal_buffer_size(uint32_t sample_rate) {
@@ -104,14 +105,12 @@ static uint32_t get_optimal_buffer_size(uint32_t sample_rate) {
 /*
  * Task to read from ADC Continuous driver
  */
-static void adc_read_task(void *arg) {
+static void adc_read_task(void* arg) {
   esp_err_t ret;
   uint32_t ret_num = 0;
   uint8_t result[ADC_READ_LEN] = {0};
   memset(result, 0xcc, ADC_READ_LEN);
 
-
-
   // ADC Init (Moved from app_main)
   // TODO: Make this configurable or find a good default pin.
   // For ESP32C6 ADC1 Channel 0 is usually GPIO 0. Let's use Channel 0 for now.
@@ -157,7 +156,6 @@ static void adc_read_task(void *arg) {
     if (ret == ESP_OK) {
       // ESP_LOGI(TAG, "ret is %x, ret_num is %"PRIu32" bytes", ret, ret_num);
 
-
       // OPTIMIZED BATCH SENDING
       // We have `ret_num` bytes of data in `result`.
       // It contains `adc_digi_output_data_t` structs (4 bytes each).
@@ -166,7 +164,6 @@ static void adc_read_task(void *arg) {
       // So we have 1/2 the size.
 
       if (s_ws_client_fd != -1) {
-
         // Allocate a small temp buffer on stack or static to avoid malloc in loop
         // ret_num is up to ADC_READ_LEN (1024). 1024 / 4 = 256 samples.
         // 256 * 2 bytes = 512 bytes output. Stack safe.
@@ -174,7 +171,7 @@ static void adc_read_task(void *arg) {
         int out_idx = 0;
 
         for (int i = 0; i < ret_num; i += sizeof(adc_digi_output_data_t)) {
-              adc_digi_output_data_t *p = (adc_digi_output_data_t *)&result[i];
+          adc_digi_output_data_t* p = (adc_digi_output_data_t*)&result[i];
           uint32_t val = ADC_GET_DATA(p);
           out_buf[out_idx++] = (uint16_t)val;
         }
@@ -184,9 +181,8 @@ static void adc_read_task(void *arg) {
               .final = true,
               .fragmented = false,
               .type = HTTPD_WS_TYPE_BINARY,
-                  .payload = (uint8_t *)out_buf,
+              .payload = (uint8_t*)out_buf,
-                  .len = out_idx * sizeof(uint16_t)
+              .len = out_idx * sizeof(uint16_t)};
-              };
 
           // Non-blocking send (best effort)
           esp_err_t ret_ws = httpd_ws_send_frame_async(s_server, s_ws_client_fd, &ws_frame);
@@ -213,11 +209,8 @@ static void adc_read_task(void *arg) {
   }
 }
 
-
+static void continuous_adc_init(adc_channel_t* channel, uint8_t channel_num,
-
+                                adc_continuous_handle_t* out_handle) {
-static void continuous_adc_init(adc_channel_t *channel, uint8_t channel_num,
-                                adc_continuous_handle_t *out_handle) {
-
   uint32_t frame_size = get_optimal_buffer_size(s_sample_rate);
   ESP_LOGI(TAG, "Dynamic Buffer Size: %lu bytes", frame_size);
 
@@ -275,16 +268,14 @@ static void start_test_signal(uint32_t hz) {
       .duty_resolution = LEDC_TIMER_14_BIT,
       .timer_num = LEDC_TIMER_0,
       .freq_hz = hz,
-    .clk_cfg = LEDC_AUTO_CLK
+      .clk_cfg = LEDC_AUTO_CLK};
-  };
   ledc_channel_config_t ledc_channel = {
       .gpio_num = 1,  // GPIO data pin 1
       .speed_mode = LEDC_LOW_SPEED_MODE,
       .channel = LEDC_CHANNEL_0,
       .timer_sel = LEDC_TIMER_0,
       .duty = 1 << (ledc_timer.duty_resolution - 1),  // 512, // 50% duty cycle (1024 / 2 for 10-bit resolution)
-    .hpoint = 0
+      .hpoint = 0};
-  };
 
   // Initialize the PWM
   ledc_timer_config(&ledc_timer);
@@ -295,6 +286,17 @@ static void start_test_signal(uint32_t hz) {
   ledc_inited = true;
 }
 
+static void show_status_led() {
+#ifdef CONFIG_LED_BUILTIN
+  while (true) {
+    vTaskDelay(pdMS_TO_TICKS(100));
+    gpio_set_level(CONFIG_LED_BUILTIN, 1);
+    vTaskDelay(pdMS_TO_TICKS(s_ws_client_fd == -1 ? 900 : 200));
+    gpio_set_level(CONFIG_LED_BUILTIN, 0);
+  }
+#endif
+}
+
 void app_main(void) {
   // Initialize NVS
   esp_err_t ret = nvs_flash_init();
@@ -305,17 +307,27 @@ void app_main(void) {
   }
   ESP_ERROR_CHECK(ret);
 
+#ifdef CONFIG_LED_BUILTIN
+  gpio_config_t led_io_conf = {
+      .pin_bit_mask = (1ULL << CONFIG_LED_BUILTIN),
+      .mode = GPIO_MODE_OUTPUT,
+      .pull_up_en = GPIO_PULLUP_DISABLE,
+      .pull_down_en = GPIO_PULLDOWN_DISABLE,
+      .intr_type = GPIO_INTR_DISABLE};
+  gpio_config(&led_io_conf);
+  gpio_set_level(CONFIG_LED_BUILTIN, 0);
+#endif
+
   ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
   /* Board-specific WiFi init (if any) */
   // Seeed XIAO ESP32C6: Configure GPIO 3 and GPIO 14 as outputs
-    gpio_config_t io_conf = {
+  gpio_config_t board_io_conf = {
       .pin_bit_mask = (1ULL << 3) | (1ULL << 14),
       .mode = GPIO_MODE_OUTPUT,
       .pull_up_en = GPIO_PULLUP_DISABLE,
       .pull_down_en = GPIO_PULLDOWN_DISABLE,
-        .intr_type = GPIO_INTR_DISABLE
+      .intr_type = GPIO_INTR_DISABLE};
-    };
+  gpio_config(&board_io_conf);
-    gpio_config(&io_conf);
 
   // Set GPIO 3 and GPIO 14 to low
   gpio_set_level(3, 0);
@@ -323,10 +335,7 @@ void app_main(void) {
   /* end board-specific WiFi init (if any) */
 
   wifi_init_sta();
-
   start_test_signal(100);
-
-
   xTaskCreate(adc_read_task, "adc_read_task", 8192 + ADC_READ_LEN, NULL, 5, NULL);
 
   // Wait for WiFi connection
@@ -337,6 +346,7 @@ void app_main(void) {
   if (bits & WIFI_CONNECTED_BIT) {
     ESP_LOGI(TAG, "connected to ap SSID:%s", ESP_WIFI_SSID);
     start_webserver();
+    show_status_led();
   } else if (bits & WIFI_FAIL_BIT) {
     ESP_LOGI(TAG, "Failed to connect to SSID:%s", ESP_WIFI_SSID);
   } else {
@@ -344,8 +354,8 @@ void app_main(void) {
   }
 }
 
-static void event_handler(void *arg, esp_event_base_t event_base,
+static void event_handler(void* arg, esp_event_base_t event_base,
-                          int32_t event_id, void *event_data) {
+                          int32_t event_id, void* event_data) {
   if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
     esp_wifi_connect();
   } else if (event_base == WIFI_EVENT &&
@@ -359,7 +369,7 @@ static void event_handler(void *arg, esp_event_base_t event_base,
     }
     ESP_LOGI(TAG, "connect to the AP fail");
   } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
-    ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
+    ip_event_got_ip_t* event = (ip_event_got_ip_t*)event_data;
     ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
     s_retry_num = 0;
     xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
@@ -401,19 +411,17 @@ static void wifi_init_sta(void) {
   ESP_LOGI(TAG, "wifi_init_sta finished.");
 }
 
-
-
 /*
  * WebSocket Handler
  */
-static esp_err_t ws_handler(httpd_req_t *req) {
+static esp_err_t ws_handler(httpd_req_t* req) {
   if (req->method == HTTP_GET) {
     // Handshake
     return ESP_OK;
   }
 
   httpd_ws_frame_t ws_pkt;
-  uint8_t *buf = NULL;
+  uint8_t* buf = NULL;
   memset(&ws_pkt, 0, sizeof(httpd_ws_frame_t));
   ws_pkt.type = HTTPD_WS_TYPE_TEXT;
 
@@ -435,7 +443,7 @@ static esp_err_t ws_handler(httpd_req_t *req) {
 
     // Check for "hello"
     if (ws_pkt.type == HTTPD_WS_TYPE_TEXT &&
-        strcmp((char *)ws_pkt.payload, "hello") == 0) {
+        strcmp((char*)ws_pkt.payload, "hello") == 0) {
       ESP_LOGI(TAG, "New WS client connected, fd=%d", httpd_req_to_sockfd(req));
       s_ws_client_fd = httpd_req_to_sockfd(req);
     }
@@ -447,7 +455,7 @@ static esp_err_t ws_handler(httpd_req_t *req) {
 /*
  * Control Params Handler (POST /params)
  */
-static esp_err_t params_handler(httpd_req_t *req) {
+static esp_err_t params_handler(httpd_req_t* req) {
   char buf[256];
   int ret, remaining = req->content_len;
   if (remaining >= sizeof(buf)) {
@@ -460,24 +468,24 @@ static esp_err_t params_handler(httpd_req_t *req) {
     return ESP_FAIL;
   buf[ret] = '\0';
 
-  cJSON *root = cJSON_Parse(buf);
+  cJSON* root = cJSON_Parse(buf);
   if (root) {
-    cJSON *sample_rate = cJSON_GetObjectItem(root, "sample_rate");
+    cJSON* sample_rate = cJSON_GetObjectItem(root, "sample_rate");
     if (sample_rate && s_sample_rate != sample_rate->valueint) {
       s_reconfig_needed = true;
       s_sample_rate = sample_rate->valueint;
     }
-    cJSON *atten = cJSON_GetObjectItem(root, "atten");
+    cJSON* atten = cJSON_GetObjectItem(root, "atten");
     if (atten && s_atten != (adc_atten_t)atten->valueint) {
       s_reconfig_needed = true;
       s_atten = (adc_atten_t)atten->valueint;
     }
-    cJSON *bit_width = cJSON_GetObjectItem(root, "bit_width");
+    cJSON* bit_width = cJSON_GetObjectItem(root, "bit_width");
     if (bit_width && s_bit_width != (adc_bitwidth_t)bit_width->valueint) {
       s_reconfig_needed = true;
       s_bit_width = (adc_bitwidth_t)bit_width->valueint;
     }
-    cJSON *test_hz = cJSON_GetObjectItem(root, "test_hz");
+    cJSON* test_hz = cJSON_GetObjectItem(root, "test_hz");
     if (test_hz) {
       if (s_test_hz != (adc_bitwidth_t)test_hz->valueint) {
         s_test_hz = (adc_bitwidth_t)test_hz->valueint;
@@ -507,16 +515,14 @@ static const httpd_uri_t uri_params = {.uri = "/params",
                                        .handler = params_handler,
                                        .user_ctx = NULL};
 
-
-
 /* Handler for serving index.html */
-static esp_err_t index_handler(httpd_req_t *req) {
+static esp_err_t index_handler(httpd_req_t* req) {
   httpd_resp_set_type(req, "text/html");
   httpd_resp_set_hdr(req, "Content-Type", "text/html; charset=utf-8");
   uint32_t len = index_html_end - index_html_start;
   // Workaround for some build systems adding null byte
-  while (len && index_js_start[len-1] == 0) len--;
+  while (len && index_js_start[len - 1] == 0) len--;
-  httpd_resp_send(req, (const char *)index_html_start, len);
+  httpd_resp_send(req, (const char*)index_html_start, len);
   return ESP_OK;
 }
 
@@ -524,19 +530,32 @@ static const httpd_uri_t uri_index = {
     .uri = "/", .method = HTTP_GET, .handler = index_handler, .user_ctx = NULL};
 
 /* Handler for serving index.js */
-static esp_err_t index_js_handler(httpd_req_t *req) {
+static esp_err_t index_js_handler(httpd_req_t* req) {
   httpd_resp_set_type(req, "text/javascript");
   httpd_resp_set_hdr(req, "Content-Type", "text/javascript; charset=utf-8");
   uint32_t len = index_js_end - index_js_start;
   // Workaround for some build systems adding null byte
-  while (len && index_js_start[len-1] == 0) len--;
+  while (len && index_js_start[len - 1] == 0) len--;
-  httpd_resp_send(req, (const char *)index_js_start, len);
+  httpd_resp_send(req, (const char*)index_js_start, len);
   return ESP_OK;
 }
 
 static const httpd_uri_t uri_index_js = {
     .uri = "/index.js", .method = HTTP_GET, .handler = index_js_handler, .user_ctx = NULL};
 
+static esp_err_t power_handler(httpd_req_t* req) {
+#ifdef CONFIG_LED_BUILTIN
+  gpio_set_level(CONFIG_LED_BUILTIN, 0);
+#endif
+
+  esp_sleep_enable_timer_wakeup(30L * 24L * 60L * 60L * 1000000ULL);  // One month
+  esp_deep_sleep_start();
+  return ESP_OK;
+}
+
+static const httpd_uri_t uri_power = {
+    .uri = "/poweroff", .method = HTTP_POST, .handler = power_handler, .user_ctx = NULL};
+
 static void start_webserver(void) {
   httpd_config_t config = HTTPD_DEFAULT_CONFIG();
   config.lru_purge_enable = true;
@@ -548,9 +567,7 @@ static void start_webserver(void) {
     httpd_register_uri_handler(s_server, &uri_index_js);
     httpd_register_uri_handler(s_server, &uri_ws);
     httpd_register_uri_handler(s_server, &uri_params);
-
+    httpd_register_uri_handler(s_server, &uri_power);
-
-
   } else {
     ESP_LOGI(TAG, "Error starting server!");
   }