diff --git a/README.md b/README.md
index 8a8b29e..15a2516 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@
 [![PlatformIO Registry](https://badges.registry.platformio.org/packages/kuba2k2/platform/libretuya.svg)](https://registry.platformio.org/platforms/kuba2k2/libretuya)
 
 ![RTL8710BN](https://img.shields.io/badge/-rtl8710bn-blue)
+![BK7231](https://img.shields.io/badge/-bk7231-blue)
 
 </div>
 
@@ -40,33 +41,33 @@ See [Boards & CPU list](https://kuba2k2.github.io/libretuya/docs/supported/).
 
 Note: this list will probably change with each functionality update.
 
-&nbsp;              | `realtek-ambz`
---------------------|---------------
-Core functions      | ✔️
-GPIO/PWM/IRQ        | ✔️/✔️/✔️
-Analog input        | ✔️
-UART I/O            | ✔️
-Flash I/O           | ✔️
-**CORE LIBRARIES**  |
-SoftwareSerial      | ❌
-SPI                 | ❌
-Wire                | ❗
-**OTHER LIBRARIES** |
-Wi-Fi STA/AP/Mixed  | ✔️
-Wi-Fi Events        | ✔️
-TCP Client (SSL)    | ✔️ (✔️)
-TCP Server          | ✔️
-IPv6                | ❌
-HTTP Client (SSL)   | ✔️ (✔️)
-HTTP Server         | ✔️
-NVS / Preferences   | ❌
-SPIFFS              | ❌
-BLE                 | -
-NTP                 | ❌
-OTA                 | ✔️
-MDNS                | ✔️
-MQTT                | ✅
-SD                  | ❌
+&nbsp;              | `realtek-ambz` | `beken-72xx`
+--------------------|----------------|-------------
+Core functions      | ✔️             | ✔️
+GPIO/PWM/IRQ        | ✔️/✔️/✔️       | ❌/❌/❌
+Analog input        | ✔️             | ❌
+UART I/O            | ✔️             | ❌
+Flash I/O           | ✔️             | ✔️
+**CORE LIBRARIES**  |                |
+SoftwareSerial      | ❌              | ❌
+SPI                 | ❌              | ❌
+Wire                | ❗              | ❌
+**OTHER LIBRARIES** |                |
+Wi-Fi STA/AP/Mixed  | ✔️             | ❌
+Wi-Fi Events        | ✔️             | ❌
+TCP Client (SSL)    | ✔️ (✔️)        | ❌
+TCP Server          | ✔️             | ❌
+IPv6                | ❌              | ❌
+HTTP Client (SSL)   | ✔️ (✔️)        | ❌
+HTTP Server         | ✔️             | ❌
+NVS / Preferences   | ❌              | ❌
+SPIFFS              | ❌              | ❌
+BLE                 | -              | ❌
+NTP                 | ❌              | ❌
+OTA                 | ✔️             | ❌
+MDNS                | ✔️             | ❌
+MQTT                | ✅              | ❌
+SD                  | ❌              | ❌
 
 Symbols:
 
diff --git a/arduino/beken-72xx/cores/arduino/Arduino.h b/arduino/beken-72xx/cores/arduino/Arduino.h
new file mode 100644
index 0000000..cbea0ee
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/Arduino.h
@@ -0,0 +1,15 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-14. */
+
+#pragma once
+
+#ifdef __cplusplus
+#include "WCharacterFixup.h"
+#endif
+
+#include <api/ArduinoAPI.h>
+#include <core/LibreTuyaAPI.h>
+
+// Include family-specific code
+#include "WVariant.h"
+// Include board variant
+#include "variant.h"
diff --git a/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp b/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp
new file mode 100644
index 0000000..c500f27
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/LibreTuyaAPI.cpp
@@ -0,0 +1,121 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-19. */
+
+#include <LibreTuyaAPI.h>
+
+// can't include <flash.h> as it collides with <Flash.h> on Windows -_-
+#define REG_FLASH_BASE		 0x00803000
+#define REG_FLASH_OPERATE_SW (REG_FLASH_BASE + 0 * 4)
+#define REG_FLASH_RDID		 (REG_FLASH_BASE + 4 * 4)
+#define FLASH_BUSY_SW		 (0x01UL << 31)
+#define FLASH_WP_VALUE		 (0x01UL << 30)
+#define FLASH_OP_SW			 (0x01UL << 29)
+#define FLASH_OP_TYPE_POS	 24
+#define FLASH_OP_RDID		 20
+
+extern "C" {
+#include <flash_pub.h>
+#include <sys_ctrl.h>
+#include <sys_rtos.h>
+}
+
+void LibreTuya::restart() {
+	// TODO
+}
+
+/* CPU-related */
+
+ChipType LibreTuya::getChipType() {
+	uint8_t chipId = *(uint8_t *)(SCTRL_CHIP_ID);
+	return CHIP_TYPE_ENUM(FAMILY, chipId);
+}
+
+const char *LibreTuya::getChipModel() {
+	return STRINGIFY_MACRO(MCU);
+}
+
+uint32_t LibreTuya::getChipId() {
+	// TODO determine if this really is unique
+	uint32_t chipId = REG_READ(SCTRL_DEVICE_ID);
+	chipId &= 0xFFFFFF;
+	return chipId;
+}
+
+uint8_t LibreTuya::getChipCores() {
+	return 1;
+}
+
+const char *LibreTuya::getChipCoreType() {
+	return "ARM968E-S";
+}
+
+uint32_t LibreTuya::getCpuFreq() {
+	// TODO
+	return 0;
+}
+
+uint32_t LibreTuya::getCycleCount() {
+	// TODO
+	return 0;
+}
+
+/* Flash memory utilities */
+
+FlashId LibreTuya::getFlashChipId() {
+	uint32_t data = (FLASH_OP_RDID << FLASH_OP_TYPE_POS) | FLASH_OP_SW | FLASH_WP_VALUE;
+	REG_WRITE(REG_FLASH_OPERATE_SW, data);
+	while (REG_READ(REG_FLASH_OPERATE_SW) & FLASH_BUSY_SW) {}
+	FlashId id = {
+		.manufacturerId = REG_RD8(REG_FLASH_RDID, 2),
+		.chipId			= REG_RD8(REG_FLASH_RDID, 1),
+		.chipSizeId		= REG_RD8(REG_FLASH_RDID, 0),
+	};
+	return id;
+}
+
+/* Memory management */
+
+uint32_t LibreTuya::getRamSize() {
+	return 256 * 1024;
+}
+
+uint32_t LibreTuya::getHeapSize() {
+	return configTOTAL_HEAP_SIZE;
+}
+
+uint32_t LibreTuya::getFreeHeap() {
+	return xPortGetFreeHeapSize();
+}
+
+uint32_t LibreTuya::getMinFreeHeap() {
+	return xPortGetMinimumEverFreeHeapSize();
+}
+
+uint32_t LibreTuya::getMaxAllocHeap() {
+	return 0;
+}
+
+/* OTA-related */
+
+uint8_t LibreTuya::otaGetStoredIndex() {
+	return 1;
+}
+
+bool LibreTuya::otaSupportsDual() {
+	return false;
+}
+
+bool LibreTuya::otaHasImage1() {
+	return true;
+}
+
+bool LibreTuya::otaHasImage2() {
+	return false;
+}
+
+bool LibreTuya::otaSwitch(bool force) {
+	return true;
+}
+
+/* Global instance */
+
+LibreTuya LT;
diff --git a/arduino/beken-72xx/cores/arduino/WVariant.h b/arduino/beken-72xx/cores/arduino/WVariant.h
new file mode 100644
index 0000000..eede287
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/WVariant.h
@@ -0,0 +1,14 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-18. */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "sdk_extern.h"
+#include "sdk_mem.h"
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
diff --git a/arduino/beken-72xx/cores/arduino/main.cpp b/arduino/beken-72xx/cores/arduino/main.cpp
new file mode 100644
index 0000000..4636345
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/main.cpp
@@ -0,0 +1,25 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-19. */
+
+#include <Arduino.h>
+
+extern "C" {
+#include <rtos_pub.h>
+#include <sys_rtos.h>
+}
+
+beken_thread_t mainThread;
+
+bool startMainTask() {
+	OSStatus ret = rtos_create_thread(
+		&mainThread,
+		THD_APPLICATION_PRIORITY,
+		"main",
+		(beken_thread_function_t)main_task,
+		4096,
+		NULL
+	);
+	if (ret != kNoErr)
+		return false;
+	vTaskStartScheduler();
+	return true;
+}
diff --git a/arduino/beken-72xx/cores/arduino/sdk_extern.h b/arduino/beken-72xx/cores/arduino/sdk_extern.h
new file mode 100644
index 0000000..dfec335
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/sdk_extern.h
@@ -0,0 +1,19 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-18. */
+
+#pragma once
+
+// for printf() etc (they are wrapped anyway)
+#include <stdio.h>
+
+// most stuff is here
+#include <include.h>
+// for os_printf
+#include <uart_pub.h>
+// for GPIO names
+#include <gpio_pub.h>
+
+// conflict with stl_algobase.h
+#undef min
+#undef max
+
+extern unsigned char __disable_bk_printf;
diff --git a/arduino/beken-72xx/cores/arduino/sdk_mem.h b/arduino/beken-72xx/cores/arduino/sdk_mem.h
new file mode 100644
index 0000000..e61ab14
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/sdk_mem.h
@@ -0,0 +1,20 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-18. */
+
+#pragma once
+
+#include <stddef.h>
+
+// Beken SDK is actually pretty good, in terms of declaring
+// stdlib functions properly! So no need for any #define hell.
+#include <mem_pub.h>
+
+// All the MemMang functions are in stdlib, just wrapped
+// during linking.
+#include <stdlib.h>
+// for memcpy etc.
+#include <string.h>
+
+// ...except zalloc, which is apparently not in the stdlib
+#define zalloc os_zalloc
+
+#define LT_HEAP_FUNC xPortGetFreeHeapSize
diff --git a/arduino/beken-72xx/cores/arduino/wiring.c b/arduino/beken-72xx/cores/arduino/wiring.c
new file mode 100644
index 0000000..06345b2
--- /dev/null
+++ b/arduino/beken-72xx/cores/arduino/wiring.c
@@ -0,0 +1,21 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-19. */
+
+#include <Arduino.h>
+#include <rtos_pub.h>
+#include <sys_rtos.h>
+
+// TODO work out this conflicting with func/misc/target_util.c
+/* void delay(unsigned long ms) {
+	rtos_delay_milliseconds(ms);
+} */
+
+void delayMicroseconds(unsigned int us) {}
+
+uint32_t millis() {
+	return xTaskGetTickCount() * portTICK_PERIOD_MS;
+}
+
+void yield() {
+	vTaskDelay(1);
+	taskYIELD();
+}
diff --git a/arduino/beken-72xx/port/flashdb/fal_flash_bk72xx_port.c b/arduino/beken-72xx/port/flashdb/fal_flash_bk72xx_port.c
new file mode 100644
index 0000000..d0c0c68
--- /dev/null
+++ b/arduino/beken-72xx/port/flashdb/fal_flash_bk72xx_port.c
@@ -0,0 +1,45 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-19. */
+
+#include <sdk_extern.h>
+
+#include <fal.h>
+#include <flash_pub.h>
+
+#define FLASH_ERASE_MIN_SIZE (4 * 1024)
+
+extern uint32_t flash_ctrl(uint32_t cmd, void *param);
+
+static int init() {
+	__disable_bk_printf = 1;
+	flash_init();
+	__disable_bk_printf = 0;
+	return 0;
+}
+
+static int read(long offset, uint8_t *buf, size_t size) {
+	flash_read((char *)buf, size, offset);
+	return size;
+}
+
+static int write(long offset, const uint8_t *buf, size_t size) {
+	flash_write((char *)buf, size, offset);
+	return size;
+}
+
+static int erase(long offset, size_t size) {
+	size = ((size - 1) / FLASH_ERASE_MIN_SIZE) + 1;
+	for (uint16_t i = 0; i < size; i++) {
+		uint32_t addr = offset + i * FLASH_ERASE_MIN_SIZE;
+		flash_ctrl(CMD_FLASH_ERASE_SECTOR, &addr);
+	}
+	return size * FLASH_ERASE_MIN_SIZE;
+}
+
+const struct fal_flash_dev flash0 = {
+	.name		= FAL_FLASH_DEV_NAME,
+	.addr		= 0x0,
+	.len		= FLASH_LENGTH,
+	.blk_size	= FLASH_ERASE_MIN_SIZE,
+	.ops		= {init, read, write, erase},
+	.write_gran = 1,
+};
diff --git a/arduino/beken-72xx/port/printf/printf.c b/arduino/beken-72xx/port/printf/printf.c
new file mode 100644
index 0000000..44d6d38
--- /dev/null
+++ b/arduino/beken-72xx/port/printf/printf.c
@@ -0,0 +1,11 @@
+/* Copyright (c) Kuba Szczodrzyński 2022-06-19. */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+// include bk_send_byte()
+#include <uart_pub.h>
+
+void putchar_(char c) {
+	uart_write_byte(uart_print_port, c);
+}
diff --git a/boards/_base/beken-72xx.json b/boards/_base/beken-72xx.json
index 54d447b..81c093e 100644
--- a/boards/_base/beken-72xx.json
+++ b/boards/_base/beken-72xx.json
@@ -17,7 +17,8 @@
 		]
 	},
 	"frameworks": [
-		"beken-72xx-sdk"
+		"beken-72xx-sdk",
+		"beken-72xx-arduino"
 	],
 	"upload": {
 		"maximum_ram_size": 262144,
diff --git a/builder/frameworks/beken-72xx-arduino.py b/builder/frameworks/beken-72xx-arduino.py
new file mode 100644
index 0000000..1880952
--- /dev/null
+++ b/builder/frameworks/beken-72xx-arduino.py
@@ -0,0 +1,28 @@
+# Copyright (c) Kuba Szczodrzyński 2022-06-14.
+
+from SCons.Script import DefaultEnvironment
+
+env = DefaultEnvironment()
+
+# SDK options
+env.Replace(
+    LIB_BDK_DRIVER_SKIP=[
+        # using printf library wrappers instead
+        "uart/printf.c",
+    ]
+)
+
+env.SConscript("beken-72xx-sdk.py", exports="env")
+env.SConscript("../arduino-common.py", exports="env")
+
+# Flags
+env.Append(
+    CCFLAGS=[
+        "-Wno-write-strings",
+        "-Wno-char-subscripts",
+        "-Wno-missing-braces",
+    ],
+)
+
+# Build all libraries
+env.BuildLibraries()
diff --git a/builder/frameworks/beken-72xx-sdk.py b/builder/frameworks/beken-72xx-sdk.py
index e0ed1cd..595b0b3 100644
--- a/builder/frameworks/beken-72xx-sdk.py
+++ b/builder/frameworks/beken-72xx-sdk.py
@@ -87,7 +87,6 @@ env.Append(
         "-marm",
         "-mthumb-interwork",
         "-g",
-        "-nostdlib",
         "-nostartfiles",
         "--specs=nano.specs",
         "-Wl,--gc-sections",
@@ -104,6 +103,7 @@ env.Append(
         "-Wl,-wrap,snprintf",
         "-Wl,-wrap,sprintf",
         "-Wl,-wrap,vsnprintf",
+        # for disabling os_printf() output
         "-Wl,-wrap,bk_printf",
     ],
 )
diff --git a/docs/supported_families.md b/docs/supported_families.md
index dae1bf1..fec0459 100644
--- a/docs/supported_families.md
+++ b/docs/supported_families.md
@@ -6,7 +6,7 @@ Realtek Ameba1                                                     | `-`
 [Realtek AmebaZ](https://www.amebaiot.com/en/amebaz/)              | `realtek-ambz`               | `ambz`               | `RTL8710B` (0x22E0D6FC) | ✔️           | `framework-realtek-amb1` ([amb1_sdk](https://github.com/ambiot/amb1_sdk))
 Realtek AmebaZ2                                                    | `-`                          | `-`                  | `RTL8720C` (0xE08F7564) | ❌            | -
 Realtek AmebaD                                                     | `-`                          | `-`                  | `RTL8720D` (0x3379CFE2) | ❌            | -
-[Beken 7231T](http://www.bekencorp.com/en/goods/detail/cid/7.html) | `beken-7231t` (`beken-72xx`) | `bk7231t` (`bk72xx`) | `BK7231T` (0x675A40B0)  | ❌            | `framework-beken-bdk` ([bdk_freertos](https://github.com/bekencorp/bdk_freertos))
+[Beken 7231T](http://www.bekencorp.com/en/goods/detail/cid/7.html) | `beken-7231t` (`beken-72xx`) | `bk7231t` (`bk72xx`) | `BK7231T` (0x675A40B0)  | ✔️           | `framework-beken-bdk` ([bdk_freertos](https://github.com/bekencorp/bdk_freertos))
 Beken 7231N                                                        | `-`                          | `-`                  | `BK7231N` (0x7B3EF230)  | ❌            | -
 Boufallo 602                                                       | `-`                          | `-`                  | `BL602` (0xDE1270B7)    | ❌            | -
 Xradiotech 809                                                     | `-`                          | `-`                  | `XR809` (0x51E903A8)    | ❌            | -
diff --git a/platform.json b/platform.json
index 7f6113f..1d8cc10 100644
--- a/platform.json
+++ b/platform.json
@@ -26,6 +26,11 @@
       "title": "Beken 72XX - SDK",
       "package": "framework-beken-bdk",
       "script": "builder/frameworks/beken-72xx-sdk.py"
+    },
+    "beken-72xx-arduino": {
+      "title": "Beken 72XX - Arduino",
+      "package": "framework-beken-bdk",
+      "script": "builder/frameworks/beken-72xx-arduino.py"
     }
   },
   "packages": {
diff --git a/tools/util/models.py b/tools/util/models.py
index ffa3df9..0365a52 100644
--- a/tools/util/models.py
+++ b/tools/util/models.py
@@ -32,7 +32,13 @@ class Family:
     def has_arduino_core(self) -> bool:
         if not self.name:
             return False
-        return isdir(join(dirname(__file__), "..", "..", "arduino", self.name))
+        if isdir(join(dirname(__file__), "..", "..", "arduino", self.name)):
+            return True
+        if not self.parent:
+            return False
+        if isdir(join(dirname(__file__), "..", "..", "arduino", self.parent)):
+            return True
+        return False
 
     def dict(self) -> dict:
         return dict(