Lots of web workflow, C3 and title bar fixes

* Fixes #6221 - C3 hang on `import wifi`. Enabling the WiFi PHY was
  disabling USB. Now boards that use it set CONFIG_ESP_PHY_ENABLE_USB
  explicitly.
* Fixes #6655 - Allows pasting into the web serial page. Fixes reading
  more than 0xf bytes at a time.
* Fixes #6653 - Fixes web socket encoding of payloads >125 bytes. Can
  happen when printing a long string.
* Fixes C3 responsiveness when waiting for key to enter REPL. (It
  now correctly stops sleeping.)
* Disables title bar updates when in raw REPL. Related to #6548.
* Adds version to title bar.

main.c

@@ -57,6 +57,7 @@
 #include "supervisor/shared/stack.h"
 #include "supervisor/shared/status_leds.h"
 #include "supervisor/shared/tick.h"
+#include "supervisor/shared/title_bar.h"
 #include "supervisor/shared/traceback.h"
 #include "supervisor/shared/translate/translate.h"
 #include "supervisor/shared/workflow.h"
@@ -822,7 +823,9 @@ STATIC int run_repl(bool first_run) {
     status_led_deinit();
     #endif
     if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
+        supervisor_title_bar_suspend();
         exit_code = pyexec_raw_repl();
+        supervisor_title_bar_resume();
     } else {
         exit_code = pyexec_friendly_repl();
     }
@@ -914,6 +917,7 @@ int __attribute__((used)) main(void) {
     run_boot_py(safe_mode);
 
     supervisor_workflow_start();
+    supervisor_title_bar_start();
 
     // Boot script is finished, so now go into REPL or run code.py.
     int exit_code = PYEXEC_FORCED_EXIT;

ports/espressif/boards/adafruit_qtpy_esp32c3/sdkconfig

@@ -30,6 +30,14 @@ CONFIG_PARTITION_TABLE_FILENAME="esp-idf-config/partitions-4MB-no-uf2.csv"
 #
 # Component config
 #
+#
+
+#
+# PHY
+#
+CONFIG_ESP_PHY_ENABLE_USB=y
+# end of PHY
+
 #
 # ESP System Settings
 #

ports/espressif/boards/beetle-esp32-c3/sdkconfig

@@ -1,3 +1,9 @@
+#
+# PHY
+#
+CONFIG_ESP_PHY_ENABLE_USB=y
+# end of PHY
+
 #
 # LWIP
 #

ports/espressif/boards/lolin_c3_mini/sdkconfig

@@ -1,3 +1,9 @@
+#
+# PHY
+#
+CONFIG_ESP_PHY_ENABLE_USB=y
+# end of PHY
+
 #
 # LWIP
 #

ports/espressif/common-hal/wifi/__init__.c

@@ -44,6 +44,7 @@ wifi_radio_obj_t common_hal_wifi_radio_obj;
 #include "components/log/include/esp_log.h"
 
 #include "supervisor/port.h"
+#include "supervisor/shared/title_bar.h"
 #include "supervisor/workflow.h"
 
 #include "esp_ipc.h"
@@ -55,7 +56,7 @@ wifi_radio_obj_t common_hal_wifi_radio_obj;
 static const char *TAG = "CP wifi";
 
 STATIC void schedule_background_on_cp_core(void *arg) {
-    supervisor_workflow_request_background();
+    supervisor_title_bar_request_update(false);
 
     // CircuitPython's VM is run in a separate FreeRTOS task from wifi callbacks. So, we have to
     // notify the main task every time in case it's waiting for us.

ports/espressif/esp-idf

@@ -1 +1 @@
-Subproject commit 0180c0cb80f052919badc15df164e8edde6344ad
+Subproject commit ddb7ddbcb613a582e0a91eda8b1d2510dd0a2d83

ports/espressif/supervisor/port.c

@@ -30,7 +30,6 @@
 #include "supervisor/board.h"
 #include "supervisor/port.h"
 #include "py/runtime.h"
-#include "supervisor/esp_port.h"
 
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
@@ -390,6 +389,14 @@ void port_wake_main_task() {
     xTaskNotifyGive(circuitpython_task);
 }
 
+void port_wake_main_task_from_isr() {
+    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+    vTaskNotifyGiveFromISR(circuitpython_task, &xHigherPriorityTaskWoken);
+    if (xHigherPriorityTaskWoken == pdTRUE) {
+        portYIELD_FROM_ISR();
+    }
+}
+
 void sleep_timer_cb(void *arg) {
     port_wake_main_task();
 }

ports/espressif/supervisor/usb_serial_jtag.c

@@ -28,19 +28,23 @@
 #include "py/ringbuf.h"
 #include "py/runtime.h"
 #include "py/mphal.h"
-#include "usb_serial_jtag.h"
+#include "supervisor/port.h"
+#include "supervisor/usb_serial_jtag.h"
 
 #include "hal/usb_serial_jtag_ll.h"
 #include "esp_intr_alloc.h"
 #include "soc/periph_defs.h"
 
-#include "supervisor/esp_port.h"
 
 #define USB_SERIAL_JTAG_BUF_SIZE (64)
 
 STATIC ringbuf_t ringbuf;
 STATIC uint8_t buf[128];
-STATIC bool connected;
+STATIC volatile bool connected;
+
+#if CIRCUITPY_ESP_USB_SERIAL_JTAG && !CONFIG_ESP_PHY_ENABLE_USB
+#error "CONFIG_ESP_PHY_ENABLE_USB must be enabled in sdkconfig"
+#endif
 
 static void usb_serial_jtag_isr_handler(void *arg) {
     uint32_t flags = usb_serial_jtag_ll_get_intsts_mask();
@@ -49,6 +53,11 @@ static void usb_serial_jtag_isr_handler(void *arg) {
         usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SOF);
     }
 
+    if (flags & USB_SERIAL_JTAG_INTR_TOKEN_REC_IN_EP1) {
+        usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_TOKEN_REC_IN_EP1);
+        connected = true;
+    }
+
     if (flags & USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT) {
         usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT);
         size_t req_len = ringbuf_num_empty(&ringbuf);
@@ -64,25 +73,19 @@ static void usb_serial_jtag_isr_handler(void *arg) {
                 ringbuf_put(&ringbuf, rx_buf[i]);
             }
         }
-        vTaskNotifyGiveFromISR(circuitpython_task, NULL);
+        port_wake_main_task_from_isr();
     }
 }
 
 void usb_serial_jtag_init(void) {
     ringbuf_init(&ringbuf, buf, sizeof(buf));
-    usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SOF | USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT);
-    usb_serial_jtag_ll_ena_intr_mask(USB_SERIAL_JTAG_INTR_SOF | USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT);
+    usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SOF | USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT | USB_SERIAL_JTAG_INTR_TOKEN_REC_IN_EP1);
+    usb_serial_jtag_ll_ena_intr_mask(USB_SERIAL_JTAG_INTR_SOF | USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT | USB_SERIAL_JTAG_INTR_TOKEN_REC_IN_EP1);
     ESP_ERROR_CHECK(esp_intr_alloc(ETS_USB_SERIAL_JTAG_INTR_SOURCE, ESP_INTR_FLAG_LEVEL1,
         usb_serial_jtag_isr_handler, NULL, NULL));
 }
 
 bool usb_serial_jtag_connected(void) {
-    // Make connected sticky. Otherwise we'll be disconnected every time the SOF
-    // index is 0. (It's only ~15 bits so it wraps around frequently.)
-    if (connected) {
-        return true;
-    }
-    connected = USB_SERIAL_JTAG.fram_num.sof_frame_index > 0;
     return connected;
 }
 

supervisor/port.h

@@ -99,8 +99,14 @@ void port_background_task(void);
 void port_start_background_task(void);
 void port_finish_background_task(void);
 
-// Some ports need special handling to wake the main task from an interrupt
-// context or other task.  The port must implement the necessary code in this
-// function.  A default weak implementation is provided that does nothing.
+// Some ports need special handling to wake the main task from another task. The
+// port must implement the necessary code in this function.  A default weak
+// implementation is provided that does nothing.
 void port_wake_main_task(void);
+
+// Some ports need special handling to wake the main task from an interrupt
+// context.  The port must implement the necessary code in this function.  A
+// default weak implementation is provided that does nothing.
+void port_wake_main_task_from_isr(void);
+
 #endif  // MICROPY_INCLUDED_SUPERVISOR_PORT_H

supervisor/shared/port.c

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
+ * Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,12 +24,10 @@
  * THE SOFTWARE.
  */
 
-#ifndef MICROPY_INCLUDED_ESPRESSIF_SUPERVISOR_PORT_H
-#define MICROPY_INCLUDED_ESPRESSIF_SUPERVISOR_PORT_H
+#include "supervisor/port.h"
 
-#include "freertos/FreeRTOS.h"
-#include "freertos/task.h"
+MP_WEAK void port_wake_main_task(void) {
+}
 
-extern TaskHandle_t circuitpython_task;
-
-#endif // MICROPY_INCLUDED_ESPRESSIF_SUPERVISOR_PORT_H
+MP_WEAK void port_wake_main_task_from_isr(void) {
+}

supervisor/shared/serial.c

@@ -207,10 +207,17 @@ char serial_read(void) {
 
     #if CIRCUITPY_WEB_WORKFLOW
     if (websocket_available()) {
-        return websocket_read_char();
+        char c = websocket_read_char();
+        if (c != -1) {
+            return c;
+        }
     }
     #endif
 
+    if (port_serial_bytes_available() > 0) {
+        return port_serial_read();
+    }
+
     #if CIRCUITPY_USB_CDC
     if (!usb_cdc_console_enabled()) {
         return -1;
@@ -220,9 +227,6 @@ char serial_read(void) {
     return (char)tud_cdc_read_char();
     #endif
 
-    if (port_serial_bytes_available() > 0) {
-        return port_serial_read();
-    }
     return -1;
 }
 

supervisor/shared/title_bar.c

@@ -0,0 +1,93 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdbool.h>
+#include "genhdr/mpversion.h"
+#include "py/mpconfig.h"
+#include "supervisor/background_callback.h"
+#include "supervisor/serial.h"
+#include "supervisor/shared/title_bar.h"
+
+#if CIRCUITPY_WEB_WORKFLOW
+#include "supervisor/shared/web_workflow/web_workflow.h"
+#endif
+static background_callback_t title_bar_background_cb;
+
+static bool _forced_dirty = false;
+static bool _suspended = false;
+
+static void title_bar_background(void *data) {
+    if (_suspended) {
+        return;
+    }
+    bool dirty = _forced_dirty;
+
+    #if CIRCUITPY_WEB_WORKFLOW
+    dirty = dirty || supervisor_web_workflow_status_dirty();
+    #endif
+
+    if (!dirty) {
+        return;
+    }
+    _forced_dirty = false;
+    #if CIRCUITPY_STATUS_BAR
+    // Neighboring "" "" are concatenated by the compiler. Without this separation, the hex code
+    // doesn't get terminated after two following characters and the value is invalid.
+    // This is the OSC command to set the title and the icon text. It can be up to 255 characters
+    // but some may be cut off.
+    serial_write("\x1b" "]0;");
+    serial_write("🐍 ");
+    #if CIRCUITPY_WEB_WORKFLOW
+    supervisor_web_workflow_status();
+    #endif
+    serial_write("|");
+    serial_write(MICROPY_GIT_TAG);
+    // Send string terminator
+    serial_write("\x1b" "\\");
+    #endif
+}
+
+void supervisor_title_bar_start(void) {
+    title_bar_background_cb.fun = title_bar_background;
+    title_bar_background_cb.data = NULL;
+    supervisor_title_bar_request_update(true);
+}
+
+void supervisor_title_bar_request_update(bool force_dirty) {
+    if (force_dirty) {
+        _forced_dirty = true;
+    }
+    background_callback_add_core(&title_bar_background_cb);
+}
+
+void supervisor_title_bar_suspend(void) {
+    _suspended = true;
+}
+
+void supervisor_title_bar_resume(void) {
+    _suspended = false;
+    supervisor_title_bar_request_update(false);
+}

supervisor/shared/title_bar.h

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+
+void supervisor_title_bar_start(void);
+void supervisor_title_bar_suspend(void);
+void supervisor_title_bar_resume(void);
+void supervisor_title_bar_request_update(bool force_dirty);

supervisor/shared/web_workflow/static/serial.js

@@ -63,10 +63,12 @@ input.addEventListener("beforeinput", function(e) {
     input.value = "";
     input.focus();
     e.preventDefault();
-  } else if (e.inputType == "insertText") {
+  } else if (e.inputType == "insertText" || e.inputType == "insertFromPaste") {
     ws.send(e.data);
   } else if (e.inputType == "deleteContentBackward") {
     ws.send("\b");
+  } else {
+    console.log(e);
   }
 });
 

supervisor/shared/web_workflow/web_workflow.c

@@ -95,7 +95,12 @@ typedef struct {
     char websocket_key[24 + 1];
 } _request;
 
-static wifi_radio_error_t wifi_status = WIFI_RADIO_ERROR_NONE;
+static wifi_radio_error_t _wifi_status = WIFI_RADIO_ERROR_NONE;
+
+// Store last status state to compute dirty.
+static bool _last_enabled = false;
+static uint32_t _last_ip = 0;
+static wifi_radio_error_t _last_wifi_status = WIFI_RADIO_ERROR_NONE;
 
 static mdns_server_obj_t mdns;
 static uint32_t web_api_port = 80;
@@ -108,6 +113,7 @@ static _request active_request;
 
 static char _api_password[64];
 
+// Store the encoded IP so we don't duplicate work.
 static uint32_t _encoded_ip = 0;
 static char _our_ip_encoded[4 * 4];
 
@@ -170,25 +176,41 @@ static bool _base64_in_place(char *buf, size_t in_len, size_t out_len) {
     return true;
 }
 
+STATIC void _update_encoded_ip(void) {
+    uint32_t ipv4_address = 0;
+    if (common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj)) {
+        ipv4_address = wifi_radio_get_ipv4_address(&common_hal_wifi_radio_obj);
+    }
+    if (_encoded_ip != ipv4_address) {
+        uint8_t *octets = (uint8_t *)&ipv4_address;
+        snprintf(_our_ip_encoded, sizeof(_our_ip_encoded), "%d.%d.%d.%d", octets[0], octets[1], octets[2], octets[3]);
+        _encoded_ip = ipv4_address;
+    }
+}
+
+bool supervisor_web_workflow_status_dirty(void) {
+    return common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj) != _last_enabled ||
+           _encoded_ip != _last_ip ||
+           _last_wifi_status != _wifi_status;
+}
 
 void supervisor_web_workflow_status(void) {
     serial_write_compressed(translate("Wi-Fi: "));
-    if (common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj)) {
+    _last_enabled = common_hal_wifi_radio_get_enabled(&common_hal_wifi_radio_obj);
+    if (_last_enabled) {
         uint32_t ipv4_address = wifi_radio_get_ipv4_address(&common_hal_wifi_radio_obj);
-        if (wifi_status == WIFI_RADIO_ERROR_AUTH_EXPIRE ||
-            wifi_status == WIFI_RADIO_ERROR_AUTH_FAIL) {
+        _last_wifi_status = _wifi_status;
+        if (_wifi_status == WIFI_RADIO_ERROR_AUTH_EXPIRE ||
+            _wifi_status == WIFI_RADIO_ERROR_AUTH_FAIL) {
             serial_write_compressed(translate("Authentication failure"));
-        } else if (wifi_status != WIFI_RADIO_ERROR_NONE) {
-            mp_printf(&mp_plat_print, "%d", wifi_status);
+        } else if (_wifi_status != WIFI_RADIO_ERROR_NONE) {
+            mp_printf(&mp_plat_print, "%d", _wifi_status);
         } else if (ipv4_address == 0) {
+            _last_ip = 0;
             serial_write_compressed(translate("No IP"));
         } else {
-            if (_encoded_ip != ipv4_address) {
-                uint8_t *octets = (uint8_t *)&ipv4_address;
-                snprintf(_our_ip_encoded, sizeof(_our_ip_encoded), "%d.%d.%d.%d", octets[0], octets[1], octets[2], octets[3]);
-                _encoded_ip = ipv4_address;
-            }
-
+            _update_encoded_ip();
+            _last_ip = _encoded_ip;
             mp_printf(&mp_plat_print, "%s", _our_ip_encoded);
             if (web_api_port != 80) {
                 mp_printf(&mp_plat_print, ":%d", web_api_port);
@@ -231,11 +253,11 @@ void supervisor_start_web_workflow(void) {
     // We can all connect again because it will return early if we're already connected to the
     // network. If we are connected to a different network, then it will disconnect before
     // attempting to connect to the given network.
-    wifi_status = common_hal_wifi_radio_connect(
+    _wifi_status = common_hal_wifi_radio_connect(
         &common_hal_wifi_radio_obj, (uint8_t *)ssid, ssid_len, (uint8_t *)password, password_len,
         0, 0.1, NULL, 0);
 
-    if (wifi_status != WIFI_RADIO_ERROR_NONE) {
+    if (_wifi_status != WIFI_RADIO_ERROR_NONE) {
         common_hal_wifi_radio_set_enabled(&common_hal_wifi_radio_obj, false);
         return;
     }
@@ -290,8 +312,6 @@ void supervisor_start_web_workflow(void) {
     }
 
     // TODO:
-    // GET /cp/serial.txt
-    //   - Most recent 1k of serial output.
     // GET /edit/
     //   - Super basic editor
     #endif
@@ -406,6 +426,7 @@ static bool _origin_ok(const char *origin) {
         return true;
     }
 
+    _update_encoded_ip();
     end = origin + strlen(http) + strlen(_our_ip_encoded);
     if (strncmp(origin + strlen(http), _our_ip_encoded, strlen(_our_ip_encoded)) == 0 &&
         (end[0] == '\0' || end[0] == ':')) {
@@ -710,6 +731,7 @@ static void _reply_with_version_json(socketpool_socket_obj_t *socket, _request *
     mp_print_t _socket_print = {socket, _print_chunk};
 
     const char *hostname = common_hal_mdns_server_get_hostname(&mdns);
+    _update_encoded_ip();
     // Note: this leverages the fact that C concats consecutive string literals together.
     mp_printf(&_socket_print,
         "{\"web_api_version\": 1, "

supervisor/shared/web_workflow/web_workflow.h

@@ -31,6 +31,7 @@
 // This background function should be called repeatedly. It cannot be done based
 // on events.
 void supervisor_web_workflow_background(void);
+bool supervisor_web_workflow_status_dirty(void);
 void supervisor_web_workflow_status(void);
 void supervisor_start_web_workflow(void);
 void supervisor_stop_web_workflow(void);

supervisor/shared/web_workflow/websocket.c

@@ -26,6 +26,8 @@
 
 #include "supervisor/shared/web_workflow/websocket.h"
 
+#include "supervisor/shared/title_bar.h"
+
 // TODO: Remove ESP specific stuff. For now, it is useful as we refine the server.
 #include "esp_log.h"
 
@@ -59,6 +61,9 @@ void websocket_handoff(socketpool_socket_obj_t *socket) {
     // Mark the original socket object as closed without telling the lower level.
     socket->connected = false;
     socket->num = -1;
+
+    // Send the title bar for the new client.
+    supervisor_title_bar_request_update(true);
 }
 
 bool websocket_connected(void) {
@@ -94,7 +99,7 @@ static void _read_next_frame_header(void) {
     }
     if (cp_serial.frame_index == 1 && _read_byte(&h)) {
         cp_serial.frame_index++;
-        uint8_t len = h & 0xf;
+        uint8_t len = h & 0x7f;
         cp_serial.masked = (h >> 7) == 1;
         if (len <= 125) {
             cp_serial.payload_remaining = len;
@@ -194,7 +199,9 @@ bool websocket_available(void) {
 
 char websocket_read_char(void) {
     uint8_t c;
-    _read_next_payload_byte(&c);
+    if (!_read_next_payload_byte(&c)) {
+        c = -1;
+    }
     return c;
 }
 
@@ -215,13 +222,20 @@ static void _websocket_send(_websocket *ws, const char *text, size_t len) {
     }
     frame_header[1] = payload_len;
     _send_raw(&ws->socket, (const uint8_t *)frame_header, 2);
+    uint8_t extended_len[4];
     if (payload_len == 126) {
-        _send_raw(&ws->socket, (const uint8_t *)&len, 2);
+        extended_len[0] = (len >> 8) & 0xff;
+        extended_len[1] = len & 0xff;
+        _send_raw(&ws->socket, extended_len, 2);
     } else if (payload_len == 127) {
         uint32_t zero = 0;
         // 64 bits where top four bytes are zero.
         _send_raw(&ws->socket, (const uint8_t *)&zero, 4);
-        _send_raw(&ws->socket, (const uint8_t *)&len, 4);
+        extended_len[0] = (len >> 24) & 0xff;
+        extended_len[1] = (len >> 16) & 0xff;
+        extended_len[2] = (len >> 8) & 0xff;
+        extended_len[3] = len & 0xff;
+        _send_raw(&ws->socket, extended_len, 4);
     }
     _send_raw(&ws->socket, (const uint8_t *)text, len);
     char copy[len];

supervisor/shared/workflow.c

@@ -46,27 +46,7 @@
 #endif
 static background_callback_t workflow_background_cb;
 
-#if CIRCUITPY_STATUS_BAR
-static void supervisor_workflow_update_status_bar(void) {
-    // Neighboring "" "" are concatenated by the compiler. Without this separation, the hex code
-    // doesn't get terminated after two following characters and the value is invalid.
-    // This is the OSC command to set the title and the icon text. It can be up to 255 characters
-    // but some may be cut off.
-    serial_write("\x1b" "]0;");
-    serial_write("🐍 ");
-    #if CIRCUITPY_WEB_WORKFLOW
-    supervisor_web_workflow_status();
-    #endif
-    // Send string terminator
-    serial_write("\x1b" "\\");
-}
-#endif
-
 static void workflow_background(void *data) {
-    #if CIRCUITPY_STATUS_BAR
-    supervisor_workflow_update_status_bar();
-    #endif
-
     #if CIRCUITPY_WEB_WORKFLOW
     supervisor_web_workflow_background();
     #endif

supervisor/supervisor.mk

@@ -8,12 +8,14 @@ SRC_SUPERVISOR = \
 	supervisor/shared/lock.c \
 	supervisor/shared/memory.c \
 	supervisor/shared/micropython.c \
+	supervisor/shared/port.c \
 	supervisor/shared/reload.c \
 	supervisor/shared/safe_mode.c \
   supervisor/shared/serial.c \
 	supervisor/shared/stack.c \
 	supervisor/shared/status_leds.c \
 	supervisor/shared/tick.c \
+	supervisor/shared/title_bar.c \
 	supervisor/shared/traceback.c \
 	supervisor/shared/translate/translate.c \
   supervisor/shared/workflow.c