diff --git a/examples/device/board_test/CMakeLists.txt b/examples/device/board_test/CMakeLists.txt
index 62759c49..f02f83f7 100644
--- a/examples/device/board_test/CMakeLists.txt
+++ b/examples/device/board_test/CMakeLists.txt
@@ -20,15 +20,16 @@ pico_sdk_init()
 
 add_executable(${PROJECT})
 
-target_sources(${PROJECT} PRIVATE
+target_sources(${PROJECT} PUBLIC
   src/main.c
-  "${TOP}/hw/bsp/rp2040/boards/raspberry_pi_pico/board_raspberry_pi_pico.c"
+  "${TOP}/hw/bsp/${FAMILY}/family.c"
 )
 
-target_include_directories(${PROJECT} PRIVATE
+target_include_directories(${PROJECT} PUBLIC
   "src/"
   "${TOP}/hw"
   "${TOP}/src"
+  "${TOP}/hw/bsp/${FAMILY}/boards/${BOARD}"
 )
 
 target_compile_definitions(${PROJECT} PUBLIC
diff --git a/examples/rules.mk b/examples/rules.mk
index b61af1d5..ab0373ba 100644
--- a/examples/rules.mk
+++ b/examples/rules.mk
@@ -37,7 +37,7 @@ monitor:
 else ifeq ($(FAMILY),rp2040)
 
 all:
-	[ -d $(BUILD) ] || cmake -S . -B $(BUILD) -DFAMILY=$(FAMILY) -DPICO_BUILD_DOCS=0
+	[ -d $(BUILD) ] || cmake -S . -B $(BUILD) -DFAMILY=$(FAMILY) -DBOARD=$(BOARD) -DPICO_BUILD_DOCS=0
 	$(MAKE) -C $(BUILD)
 
 clean:
diff --git a/hw/bsp/rp2040/boards/raspberry_pi_pico/board.h b/hw/bsp/rp2040/boards/raspberry_pi_pico/board.h
new file mode 100644
index 00000000..61532d8c
--- /dev/null
+++ b/hw/bsp/rp2040/boards/raspberry_pi_pico/board.h
@@ -0,0 +1,46 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021, Ha Thach (tinyusb.org)
+ *
+ * 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.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define LED_PIN               PICO_DEFAULT_LED_PIN
+#define LED_STATE_ON          1
+
+// Button pin is BOOTSEL which is flash CS pin
+
+#define BUTTON_BOOTSEL
+#define BUTTON_STATE_ACTIVE   0
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/rp2040/boards/raspberry_pi_pico/board_raspberry_pi_pico.c b/hw/bsp/rp2040/family.c
similarity index 85%
rename from hw/bsp/rp2040/boards/raspberry_pi_pico/board_raspberry_pi_pico.c
rename to hw/bsp/rp2040/family.c
index 606d9a04..bb9e88e3 100644
--- a/hw/bsp/rp2040/boards/raspberry_pi_pico/board_raspberry_pi_pico.c
+++ b/hw/bsp/rp2040/family.c
@@ -2,6 +2,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ * Copyright (c) 2021, Ha Thach (tinyusb.org)
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -31,14 +32,9 @@
 #include "hardware/structs/sio.h"
 
 #include "bsp/board.h"
+#include "board.h"
 
-#define LED_PIN               PICO_DEFAULT_LED_PIN
-#define LED_STATE_ON          1
-
-// Button pin is BOOTSEL which is flash CS pin
-// #define BUTTON_PIN
-#define BUTTON_STATE_ACTIVE   0
-
+#ifdef BUTTON_BOOTSEL
 // This example blinks the Picoboard LED when the BOOTSEL button is pressed.
 //
 // Picoboard has a button attached to the flash CS pin, which the bootrom
@@ -49,7 +45,6 @@
 //
 // This doesn't work if others are trying to access flash at the same time,
 // e.g. XIP streamer, or the other core.
-
 bool __no_inline_not_in_flash_func(get_bootsel_button)() {
     const uint CS_PIN_INDEX = 1;
 
@@ -79,22 +74,23 @@ bool __no_inline_not_in_flash_func(get_bootsel_button)() {
 
     return button_state;
 }
+#endif
 
 void board_init(void)
 {
-    setup_default_uart();
-    gpio_init(LED_PIN);
-    gpio_set_dir(LED_PIN, GPIO_OUT);
+  setup_default_uart();
+  gpio_init(LED_PIN);
+  gpio_set_dir(LED_PIN, GPIO_OUT);
 
-    // Button
+  // Button
 
-    // todo probably set up device mode?
+  // todo probably set up device mode?
 #if TUSB_OPT_DEVICE_ENABLED
 
 #endif
 
 #if TUSB_OPT_HOST_ENABLED
-    // set portfunc to host !!!
+  // set portfunc to host !!!
 #endif
 }
 
@@ -118,26 +114,30 @@ void board_init(void)
 
 void board_led_write(bool state)
 {
-    gpio_put(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+  gpio_put(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
 }
 
 uint32_t board_button_read(void)
 {
-    return BUTTON_STATE_ACTIVE == get_bootsel_button();
+#ifdef BUTTON_BOOTSEL
+  return BUTTON_STATE_ACTIVE == get_bootsel_button();
+#else
+  return 0;
+#endif
 }
 
 int board_uart_read(uint8_t* buf, int len)
 {
-    for(int i=0;i<len;i++) {
-        buf[i] = uart_getc(uart_default);
-    }
-    return 0;
+  for(int i=0;i<len;i++) {
+    buf[i] = uart_getc(uart_default);
+  }
+  return 0;
 }
 
 int board_uart_write(void const * buf, int len)
 {
-    for(int i=0;i<len;i++) {
-        uart_putc(uart_default, ((char *)buf)[i]);
-    }
-    return 0;
+  for(int i=0;i<len;i++) {
+    uart_putc(uart_default, ((char *)buf)[i]);
+  }
+  return 0;
 }