tyeth-ai-assisted · Aug 26, 2026 · Aug 26, 2026 · Sep 11, 2026 · Sep 13, 2026 · Sep 10, 2026
diff --git a/.gitmodules b/.gitmodules
@@ -424,3 +424,30 @@
 [submodule "ports/espressif/esp-hosted"]
 	path = ports/espressif/esp-hosted
 	url = https://github.com/espressif/esp-hosted-mcu.git
+[submodule "frozen/Adafruit_CircuitPython_IL0373"]
+	path = frozen/Adafruit_CircuitPython_IL0373
+	url = https://github.com/adafruit/Adafruit_CircuitPython_IL0373.git
+[submodule "frozen/Adafruit_CircuitPython_JD79667"]
+	path = frozen/Adafruit_CircuitPython_JD79667
+	url = https://github.com/adafruit/Adafruit_CircuitPython_JD79667.git
+[submodule "frozen/Adafruit_CircuitPython_MAX1704x"]
+	path = frozen/Adafruit_CircuitPython_MAX1704x
+	url = https://github.com/adafruit/Adafruit_CircuitPython_MAX1704x.git
+[submodule "frozen/Adafruit_CircuitPython_NTP"]
+	path = frozen/Adafruit_CircuitPython_NTP
+	url = https://github.com/adafruit/Adafruit_CircuitPython_NTP.git
+[submodule "frozen/Adafruit_CircuitPython_SCD4X"]
+	path = frozen/Adafruit_CircuitPython_SCD4X
+	url = https://github.com/adafruit/Adafruit_CircuitPython_SCD4X.git
+[submodule "frozen/Adafruit_CircuitPython_SCD30"]
+	path = frozen/Adafruit_CircuitPython_SCD30
+	url = https://github.com/adafruit/Adafruit_CircuitPython_SCD30.git
+[submodule "frozen/Adafruit_CircuitPython_SEN6x"]
+	path = frozen/Adafruit_CircuitPython_SEN6x
+	url = https://github.com/adafruit/Adafruit_CircuitPython_SEN6x.git
+[submodule "frozen/Adafruit_CircuitPython_PCF8523"]
+	path = frozen/Adafruit_CircuitPython_PCF8523
+	url = https://github.com/adafruit/Adafruit_CircuitPython_PCF8523.git
+[submodule "frozen/Adafruit_CircuitPython_DS1307"]
+	path = frozen/Adafruit_CircuitPython_DS1307
+	url = https://github.com/adafruit/Adafruit_CircuitPython_DS1307.git
diff --git a/frozen/Adafruit_CircuitPython_DS1307 b/frozen/Adafruit_CircuitPython_DS1307
diff --git a/frozen/Adafruit_CircuitPython_IL0373 b/frozen/Adafruit_CircuitPython_IL0373
diff --git a/frozen/Adafruit_CircuitPython_JD79667 b/frozen/Adafruit_CircuitPython_JD79667
diff --git a/frozen/Adafruit_CircuitPython_MAX1704x b/frozen/Adafruit_CircuitPython_MAX1704x
diff --git a/frozen/Adafruit_CircuitPython_NTP b/frozen/Adafruit_CircuitPython_NTP
diff --git a/frozen/Adafruit_CircuitPython_PCF8523 b/frozen/Adafruit_CircuitPython_PCF8523
diff --git a/frozen/Adafruit_CircuitPython_SCD30 b/frozen/Adafruit_CircuitPython_SCD30
diff --git a/frozen/Adafruit_CircuitPython_SCD4X b/frozen/Adafruit_CircuitPython_SCD4X
diff --git a/frozen/Adafruit_CircuitPython_SEN6x b/frozen/Adafruit_CircuitPython_SEN6x
diff --git a/ports/espressif/bindings/espnow/ESPNow.c b/ports/espressif/bindings/espnow/ESPNow.c
@@ -109,7 +109,10 @@ static MP_DEFINE_CONST_FUN_OBJ_1(espnow_deinit_obj, espnow_deinit);
 //|         This blocks until a timeout of ``2`` seconds if the ESP-NOW internal buffers are full.
 //|
 //|         :param ReadableBuffer message: The message to send (length <= 250 bytes).
-//|         :param Peer peer: Send message to this peer. If `None`, send to all registered peers.
+//|         :param Peer peer: Send message to this peer. If `None`, send to registered
+//|             unicast peers only. To broadcast or multicast, pass the corresponding
+//|             registered `Peer` explicitly. If no unicast peers are registered,
+//|             sending with `None` raises `OSError`.
 //|         """
 //|         ...
 //|
@@ -308,7 +311,7 @@ static mp_uint_t espnow_stream_ioctl(mp_obj_t self_in, mp_uint_t request, uintpt
         case MP_STREAM_POLL: {
             mp_uint_t flags = arg;
             mp_uint_t ret = 0;
-            if ((flags & MP_STREAM_POLL_RD) && ringbuf_num_filled(self->recv_buffer) > 0) {
+            if ((flags & MP_STREAM_POLL_RD) && common_hal_espnow_get_bytes_available(self) > 0) {
                 ret |= MP_STREAM_POLL_RD;
             }
             return ret;
@@ -337,7 +340,7 @@ static const mp_stream_p_t espnow_stream_p = {
 static mp_obj_t espnow_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
     espnow_obj_t *self = MP_OBJ_TO_PTR(self_in);
     espnow_check_for_deinit(self);
-    size_t len = ringbuf_num_filled(self->recv_buffer);
+    size_t len = common_hal_espnow_get_bytes_available(self);
     switch (op) {
         case MP_UNARY_OP_BOOL:
             return mp_obj_new_bool(len != 0);

diff --git a/ports/espressif/boards/adafruit_feather_esp32_v2/mpconfigboard.h b/ports/espressif/boards/adafruit_feather_esp32_v2/mpconfigboard.h
@@ -34,3 +34,8 @@
 // UART pins attached to the USB-serial converter chip
 #define CIRCUITPY_CONSOLE_UART_TX (&pin_GPIO1)
 #define CIRCUITPY_CONSOLE_UART_RX (&pin_GPIO3)
+
+// Bench finding: 32 KB of IDF headroom is not enough for a softAP that also
+// serves TLS -- handshakes hit MemoryError and DHCP replies fail while the
+// Python heap still reports free space. 40 KB is what the C6 hub needed.
+#define CIRCUITPY_ESP_RADIO_HEAP_RESERVE (40 * 1024)
diff --git a/ports/espressif/boards/adafruit_feather_esp32_v2/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32_v2/mpconfigboard.mk
@@ -10,3 +10,40 @@ CIRCUITPY_ESP_FLASH_SIZE = 8MB
 CIRCUITPY_ESP_PSRAM_SIZE = 2MB
 CIRCUITPY_ESP_PSRAM_MODE = qio
 CIRCUITPY_ESP_PSRAM_FREQ = 40m
+
+# --- environmental-collector frozen libraries -------------------------------
+# Frozen bytecode executes in place from flash; the same library imported
+# from lib/ is read into RAM and stays there. On a board without PSRAM that
+# is the difference between running and not -- a Feather ESP32-S3 No PSRAM
+# running this project, with its own code already cross-compiled to .mpy,
+# had 6 KB of heap left once BLE + ESP-NOW + softAP were up and died on the
+# next import.
+#
+# Listed literally rather than behind an include, even though the same 22
+# lines repeat across every board this project targets: tools/
+# ci_fetch_deps.py scans THIS file for "FROZEN_MPY_DIRS += $(TOP)/" to
+# decide which submodules to check out, and it does not follow includes. An
+# include builds locally and then fails CI at MKMANIFEST with empty frozen
+# directories.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BLE
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_HTTPServer
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Requests
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_ConnectionManager
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NTP
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Register
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Ticks
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SEN6x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD4X
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD30
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_MAX1704x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LC709203F
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_JD79667
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_IL0373
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Display_Text
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Bitmap_Font
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8563
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS3231
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8523
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS1307
diff --git a/ports/espressif/boards/adafruit_feather_esp32_v2/partitions.csv b/ports/espressif/boards/adafruit_feather_esp32_v2/partitions.csv
@@ -0,0 +1,7 @@
+# Env Hub build: 3 MiB OTA slots and 1984 KiB filesystem on the 8 MiB Feather V2.
+# Name, Type, SubType, Offset, Size
+nvs, data, nvs, 0x9000, 20K
+otadata, data, ota, 0xe000, 8K
+ota_0, app, ota_0, 0x10000, 3072K
+ota_1, app, ota_1, 0x310000, 3072K
+user_fs, data, fat, 0x610000, 1984K
diff --git a/ports/espressif/boards/adafruit_feather_esp32_v2/sdkconfig b/ports/espressif/boards/adafruit_feather_esp32_v2/sdkconfig
@@ -0,0 +1,9 @@
+# Frozen Env Hub libraries exceed the original 2 MiB application slot.
+# Updating this layout moves user_fs; back up and restore files when flashing.
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="boards/adafruit_feather_esp32_v2/partitions.csv"
+CONFIG_PARTITION_TABLE_FILENAME="boards/adafruit_feather_esp32_v2/partitions.csv"
+
+# Allow the collector's certificate chain to fit in an outbound TLS record.
+# Keep the upstream 16 KiB inbound record limit.
+# The current three-certificate chain needs 4159 bytes including TLS framing.
+CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=8192
diff --git a/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/mpconfigboard.h b/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/mpconfigboard.h
@@ -32,3 +32,8 @@
 
 // Explanation of how a user got into safe mode
 #define BOARD_USER_SAFE_MODE_ACTION MP_ERROR_TEXT("You pressed the BOOT button at start up.")
+
+// Bench finding: 32 KB of IDF headroom is not enough for a softAP that also
+// serves TLS -- handshakes hit MemoryError and DHCP replies fail while the
+// Python heap still reports free space. 40 KB is what the C6 hub needed.
+#define CIRCUITPY_ESP_RADIO_HEAP_RESERVE (40 * 1024)
diff --git a/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/mpconfigboard.mk
@@ -7,5 +7,43 @@ CIRCUITPY_ESP_FLASH_MODE = qio
 CIRCUITPY_ESP_FLASH_FREQ = 80m
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
 
-# Board was originally defined with a 2MB firmware, almost 2MB user filesystem. Leave it that way.
-CIRCUITPY_4MB_FLASH_LARGE_USER_FS_LAYOUT = 1
+# Frozen Env Hub libraries exceed 2 MB. Use the standard larger app layout;
+# back up and restore the filesystem when upgrading from the old layout.
+CIRCUITPY_4MB_FLASH_LARGE_USER_FS_LAYOUT = 0
+
+# --- environmental-collector frozen libraries -------------------------------
+# Frozen bytecode executes in place from flash; the same library imported
+# from lib/ is read into RAM and stays there. On a board without PSRAM that
+# is the difference between running and not -- a Feather ESP32-S3 No PSRAM
+# running this project, with its own code already cross-compiled to .mpy,
+# had 6 KB of heap left once BLE + ESP-NOW + softAP were up and died on the
+# next import.
+#
+# Listed literally rather than behind an include, even though the same 22
+# lines repeat across every board this project targets: tools/
+# ci_fetch_deps.py scans THIS file for "FROZEN_MPY_DIRS += $(TOP)/" to
+# decide which submodules to check out, and it does not follow includes. An
+# include builds locally and then fails CI at MKMANIFEST with empty frozen
+# directories.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BLE
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_HTTPServer
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Requests
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_ConnectionManager
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NTP
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Register
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Ticks
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SEN6x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD4X
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD30
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_MAX1704x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LC709203F
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_JD79667
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_IL0373
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Display_Text
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Bitmap_Font
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8563
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS3231
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8523
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS1307
diff --git a/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/sdkconfig b/ports/espressif/boards/adafruit_feather_esp32c6_4mbflash_nopsram/sdkconfig
@@ -12,3 +12,6 @@
 # end of Component config
 
 # end of Espressif IoT Development Framework Configuration
+# Fit the Env Hub server certificate chain in an outbound TLS record.
+# The current three-certificate chain needs 4159 bytes including TLS framing.
+CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=8192
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.h b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.h
@@ -27,3 +27,8 @@
 #define DEFAULT_UART_BUS_TX (&pin_GPIO39)
 
 #define DOUBLE_TAP_PIN (&pin_GPIO34)
+
+// Bench finding: 32 KB of IDF headroom is not enough for a softAP that also
+// serves TLS -- handshakes hit MemoryError and DHCP replies fail while the
+// Python heap still reports free space. 40 KB is what the C6 hub needed.
+#define CIRCUITPY_ESP_RADIO_HEAP_RESERVE (40 * 1024)
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
@@ -12,3 +12,47 @@ CIRCUITPY_ESP_FLASH_FREQ = 80m
 CIRCUITPY_ESP_PSRAM_SIZE = 2MB
 CIRCUITPY_ESP_PSRAM_MODE = qio
 CIRCUITPY_ESP_PSRAM_FREQ = 80m
+
+# This project needs _bleio on this board: the hub serves its portal over
+# a Nordic UART service and the nodes take their config the same way. The
+# port already defaults CIRCUITPY_BLEIO_NATIVE to 1 and only forces it off
+# for 2MB flash, the S2 and the P4 -- stated here so a future flash-size
+# trim cannot take it away silently.
+CIRCUITPY_BLEIO_NATIVE = 1
+
+# --- environmental-collector frozen libraries -------------------------------
+# Frozen bytecode executes in place from flash; the same library imported
+# from lib/ is read into RAM and stays there. On a board without PSRAM that
+# is the difference between running and not -- a Feather ESP32-S3 No PSRAM
+# running this project, with its own code already cross-compiled to .mpy,
+# had 6 KB of heap left once BLE + ESP-NOW + softAP were up and died on the
+# next import.
+#
+# Listed literally rather than behind an include, even though the same 22
+# lines repeat across every board this project targets: tools/
+# ci_fetch_deps.py scans THIS file for "FROZEN_MPY_DIRS += $(TOP)/" to
+# decide which submodules to check out, and it does not follow includes. An
+# include builds locally and then fails CI at MKMANIFEST with empty frozen
+# directories.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BLE
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_HTTPServer
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Requests
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_ConnectionManager
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NTP
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Register
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Ticks
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SEN6x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD4X
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD30
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_MAX1704x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LC709203F
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_JD79667
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_IL0373
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Display_Text
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Bitmap_Font
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8563
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS3231
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8523
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS1307
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/sdkconfig b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/sdkconfig
@@ -12,3 +12,6 @@
 # end of Component config
 
 # end of Espressif IoT Development Framework Configuration
+# Fit the Env Hub server certificate chain in an outbound TLS record.
+# The current three-certificate chain needs 4159 bytes including TLS framing.
+CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=8192
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/mpconfigboard.h b/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/mpconfigboard.h
@@ -27,3 +27,8 @@
 #define DEFAULT_UART_BUS_TX (&pin_GPIO39)
 
 #define DOUBLE_TAP_PIN (&pin_GPIO34)
+
+// Bench finding: 32 KB of IDF headroom is not enough for a softAP that also
+// serves TLS -- handshakes hit MemoryError and DHCP replies fail while the
+// Python heap still reports free space. 40 KB is what the C6 hub needed.
+#define CIRCUITPY_ESP_RADIO_HEAP_RESERVE (40 * 1024)
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/mpconfigboard.mk
@@ -8,3 +8,40 @@ IDF_TARGET = esp32s3
 CIRCUITPY_ESP_FLASH_MODE = qio
 CIRCUITPY_ESP_FLASH_FREQ = 80m
 CIRCUITPY_ESP_FLASH_SIZE = 8MB
+
+# --- environmental-collector frozen libraries -------------------------------
+# Frozen bytecode executes in place from flash; the same library imported
+# from lib/ is read into RAM and stays there. On a board without PSRAM that
+# is the difference between running and not -- a Feather ESP32-S3 No PSRAM
+# running this project, with its own code already cross-compiled to .mpy,
+# had 6 KB of heap left once BLE + ESP-NOW + softAP were up and died on the
+# next import.
+#
+# Listed literally rather than behind an include, even though the same 22
+# lines repeat across every board this project targets: tools/
+# ci_fetch_deps.py scans THIS file for "FROZEN_MPY_DIRS += $(TOP)/" to
+# decide which submodules to check out, and it does not follow includes. An
+# include builds locally and then fails CI at MKMANIFEST with empty frozen
+# directories.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BLE
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_HTTPServer
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Requests
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_ConnectionManager
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NTP
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Register
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Ticks
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SEN6x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD4X
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SCD30
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_MAX1704x
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LC709203F
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_JD79667
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_IL0373
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Display_Text
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Bitmap_Font
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8563
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS3231
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_PCF8523
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_DS1307
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/sdkconfig b/ports/espressif/boards/adafruit_feather_esp32s3_nopsram/sdkconfig
@@ -12,3 +12,6 @@
 # end of Component config
 
 # end of Espressif IoT Development Framework Configuration
+# Fit the Env Hub server certificate chain in an outbound TLS record.
+# The current three-certificate chain needs 4159 bytes including TLS framing.
+CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=8192
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.h b/ports/espressif/boards/adafruit_feather_esp32s3_reverse_tft/mpconfigboard.h
@@ -27,3 +27,8 @@
 #define DEFAULT_UART_BUS_TX (&pin_GPIO39)
 
 #define DOUBLE_TAP_PIN (&pin_GPIO34)
+
+// Bench finding: 32 KB of IDF headroom is not enough for a softAP that also
+// serves TLS -- handshakes hit MemoryError and DHCP replies fail while the
+// Python heap still reports free space. 40 KB is what the C6 hub needed.
+#define CIRCUITPY_ESP_RADIO_HEAP_RESERVE (40 * 1024)