CDC: mount\unmount led notifications.

main/CMakeLists.txt

@@ -6,6 +6,7 @@ set(SOURCES
     "led.c"
     "uart.c"
     "i2c.c"
+    "delay.c"
 )
 
 set(INCLUDES 

main/delay.c

@@ -0,0 +1,7 @@
+#include "delay.h"
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+void delay(uint32_t ms) {
+    vTaskDelay(100 / portTICK_PERIOD_MS);
+}

main/delay.h

@@ -0,0 +1,3 @@
+#include <stdint.h>
+
+void delay(uint32_t ms);

main/main.c

@@ -46,8 +46,9 @@ void app_main(void) {
     led_set_blue(255);
 
     usb_cdc_init();
-    // nvs_init();
-    // wifi_init();
+
+    nvs_init();
+    wifi_init();
 
     pins_init();
 

main/usb-cdc.c

@@ -15,6 +15,12 @@
 #include <tusb_cdc_acm.h>
 #include <sdkconfig.h>
 #include "usb-cdc.h"
+#include "led.h"
+#include "delay.h"
+#include <driver/gpio.h>
+
+#define USB_DN_PIN (19)
+#define USB_DP_PIN (20)
 
 static const char* TAG = "usb-cdc";
 static uint8_t buffer_rx[CONFIG_USB_CDC_RX_BUFSIZE + 1];
@@ -112,13 +118,53 @@ void usb_cdc_line_coding_changed_callback(int itf, cdcacm_event_t* event) {
 //--------------------------------------------------------------------+
 // Device callbacks
 //--------------------------------------------------------------------+
+
+// It seems like a reliable way is to rely on tud_mount_cb on connect and tud_suspend_cb on disconnect
 void tud_mount_cb(void) {
     ESP_LOGI(TAG, "Mount");
+
+    if(!furi_hal_vcp.connected) {
+        led_set_blue(255);
+        delay(10);
+        led_set_blue(0);
+    }
+
     furi_hal_vcp.connected = true;
 }
 
 void tud_umount_cb(void) {
     ESP_LOGI(TAG, "Unmount");
+
+    if(furi_hal_vcp.connected) {
+        led_set_blue(255);
+        delay(10);
+        led_set_blue(0);
+    }
+
+    furi_hal_vcp.connected = false;
+}
+
+void tud_resume_cb(void) {
+    ESP_LOGI(TAG, "Resume");
+
+    if(furi_hal_vcp.connected) {
+        led_set_blue(255);
+        delay(10);
+        led_set_blue(0);
+    }
+
+    furi_hal_vcp.connected = true;
+}
+
+void tud_suspend_cb(bool remote_wakeup_en) {
+    ESP_LOGI(TAG, "Suspend");
+
+    if(furi_hal_vcp.connected) {
+        led_set_blue(255);
+        delay(10);
+        led_set_blue(0);
+    }
+
     furi_hal_vcp.connected = false;
 }
 
@@ -128,7 +174,27 @@ void usb_cdc_init(void) {
     furi_hal_vcp.rx_stream_full = false;
 
     ESP_LOGI(TAG, "USB initialization");
-    tinyusb_config_t tusb_cfg = {};
+
+    gpio_config_t io_conf;
+    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
+    io_conf.mode = GPIO_MODE_OUTPUT_OD;
+    io_conf.pin_bit_mask = ((1 << USB_DN_PIN) | (1 << USB_DP_PIN));
+    io_conf.pull_down_en = GPIO_PULLDOWN_ENABLE;
+    io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+    gpio_config(&io_conf);
+
+    gpio_set_level(USB_DN_PIN, 0);
+    gpio_set_level(USB_DP_PIN, 0);
+    delay(100);
+    gpio_set_level(USB_DN_PIN, 1);
+    gpio_set_level(USB_DP_PIN, 1);
+
+    tinyusb_config_t tusb_cfg = {
+        .descriptor = NULL, //Uses default descriptor specified in Menuconfig
+        .string_descriptor = NULL, //Uses default string specified in Menuconfig
+        .external_phy = false,
+    };
+
     ESP_ERROR_CHECK(tinyusb_driver_install(&tusb_cfg));
 
     tinyusb_config_cdcacm_t amc_cfg = {

sdkconfig

@@ -1039,7 +1039,7 @@ CONFIG_USB_DESC_USE_DEFAULT_PID=y
 CONFIG_USB_DESC_BCDDEVICE=0x0100
 CONFIG_USB_DESC_MANUFACTURER_STRING="Espressif Systems"
 CONFIG_USB_DESC_PRODUCT_STRING="Espressif Device"
-CONFIG_USB_DESC_SERIAL_STRING="123456"
+CONFIG_USB_DESC_SERIAL_STRING="blackmagic-esp32-s2"
 CONFIG_USB_DESC_CDC_STRING="Espressif CDC Device"
 # end of Descriptor configuration