diff --git a/chipset/atwilc3000/btstack_chipset_atwilc3000.c b/chipset/atwilc3000/btstack_chipset_atwilc3000.c
new file mode 100644
index 000000000..be2c48400
--- /dev/null
+++ b/chipset/atwilc3000/btstack_chipset_atwilc3000.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2017 BlueKitchen GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ * 4. Any redistribution, use, or modification is done solely for
+ *    personal benefit and not for any commercial purpose or for
+ *    monetary gain.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
+ * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Please inquire about commercial licensing options at 
+ * contact@bluekitchen-gmbh.com
+ *
+ */
+
+/*
+ *  btstack_chipset_atwilc3000.c
+ *
+ *  Adapter to use atwilc3000-based chipsets with BTstack
+ *  
+ */
+
+#define __BTSTACK_FILE__ "btstack_chipset_atwilc3000.c"
+
+#include "btstack_config.h"
+#include "btstack_chipset_atwilc3000.h"
+#include "btstack_debug.h"
+
+
+#include <stddef.h>   /* NULL */
+#include <stdio.h> 
+#include <string.h>   /* memcpy */
+#include "hci.h"
+
+#define IRAM_START 0x80000000
+
+// HCI commands
+static const uint8_t hci_reset_command[] = { 0x01, 0x03, 0x0c, 0x00 };
+static const uint8_t hci_read_local_version_information_command[] = { 0x01, 0x01, 0x10, 0x00 };
+static const uint8_t hci_vendor_specific_reset_command[] = { 0x01, 0x55, 0xfc, 0x00 };
+
+// prototypes
+static void atwilc3000_w4_command_complete_reset(void);
+static void atwilc3000_w4_command_complete_read_local_version_information(void);
+static void atwilc3000_write_memory(void);
+static void atwilc3000_vendor_specific_reset(void);
+static void atwilc3000_done(void);
+
+// globals
+static void (*download_complete)(int result);
+static const btstack_uart_block_t * the_uart_driver;
+
+static int     download_count;
+static uint8_t event_buffer[15];
+static uint8_t command_buffer[260];
+static const uint8_t * fw_data;
+static uint32_t        fw_size;
+static uint32_t        fw_offset;
+
+static void atwilc3000_send_command(const uint8_t * data, uint16_t len){
+    hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, (uint8_t *) &data[1], len - 1);
+    the_uart_driver->send_block(data, len);
+}
+
+static void atwilc3000_log_event(void){
+    int len = event_buffer[2] + 2;
+    hci_dump_packet(HCI_EVENT_PACKET, 1, &event_buffer[1], len);
+}
+
+static void atwilc3000_start(void){
+    // send HCI Reset
+    the_uart_driver->set_block_received(&atwilc3000_w4_command_complete_reset);
+    the_uart_driver->receive_block(&event_buffer[0], 7);
+    atwilc3000_send_command(&hci_reset_command[0], sizeof(hci_reset_command));
+    log_info("atwilc3000_start: wait for command complete for HCI Reset");
+}
+
+static void atwilc3000_w4_command_complete_reset(void){
+    atwilc3000_log_event();
+    log_info("command complete Reset");
+    // static uint8_t hci_event_command_complete_reset[] = { 0x04, 0x0e, 0x04, 0x01, 0x03, 0x0c, 0x0c };
+    // TODO: check if correct event
+
+    // send HCI Read Local Version Information
+    the_uart_driver->receive_block(&event_buffer[0], 15);
+    the_uart_driver->set_block_received(&atwilc3000_w4_command_complete_read_local_version_information);
+    atwilc3000_send_command(&hci_read_local_version_information_command[0], sizeof(hci_read_local_version_information_command));
+    log_info("atwilc3000_start: wait for command complete for HCI Read Local Version Information");
+}
+
+static void atwilc3000_w4_command_complete_read_local_version_information(void){
+    atwilc3000_log_event();
+    log_info("command complete Read Local Version Information");
+    uint8_t firmware_version = event_buffer[7];
+    log_info("Firmware version 0x%02x", firmware_version);
+    if (firmware_version != 0xff){
+        log_info("Firmware already loaded, download complete");
+        download_complete(0);
+        return;
+    }
+    log_info("Running from ROM, start firmware download");
+    // TODO: check if  firmware download can be skipped
+    atwilc3000_write_memory();
+}
+
+static void atwilc3000_write_memory(void){
+    atwilc3000_log_event();
+
+    // done?
+    if (fw_offset >= fw_size){
+        log_info("DONE!!!");
+        atwilc3000_vendor_specific_reset();
+        return;
+    }
+    // bytes to write
+    log_info("Write pos %u", fw_offset);
+    uint16_t bytes_to_write = btstack_min((fw_size - fw_offset), (255-8));
+    // setup write command
+    command_buffer[0] = 1;
+    command_buffer[1] = 0x52;
+    command_buffer[2] = 0xfc;
+    command_buffer[3] = 8; // NOTE: this is in violation of the Bluetooth Specification, but documented in the Atmel-NNNNN-ATWIL_Linux_Porting_Guide
+    little_endian_store_32(command_buffer, 4, IRAM_START + fw_offset);
+    little_endian_store_32(command_buffer, 8, bytes_to_write);
+    memcpy(&command_buffer[12], &fw_data[fw_offset], bytes_to_write);
+    //
+    fw_offset += bytes_to_write;
+
+    // send write command
+    the_uart_driver->receive_block(&event_buffer[0], 7);
+    the_uart_driver->set_block_received(&atwilc3000_write_memory);
+    atwilc3000_send_command(&command_buffer[0], 12 + bytes_to_write);
+}
+
+static void atwilc3000_vendor_specific_reset(void){
+    // send HCI Vendor Specific Reset
+    // the_uart_driver->receive_block(&event_buffer[0], 7);
+    // the_uart_driver->set_block_received(&atwilc3000_done);
+    the_uart_driver->set_block_sent(&atwilc3000_done);
+    atwilc3000_send_command(&hci_vendor_specific_reset_command[0], sizeof(hci_vendor_specific_reset_command));
+}
+
+static void atwilc3000_done(void){
+    log_info("done");
+    download_complete(0);
+}
+
+void btstack_chipset_atwilc3000_download_firmware(const btstack_uart_block_t * uart_driver, const uint8_t * da_fw_data, uint32_t da_fw_size, void (*done)(int result)){
+
+	the_uart_driver   = uart_driver;
+    download_complete = done;
+    fw_data = da_fw_data;
+    fw_size = da_fw_size;
+    fw_offset = 0;
+
+    int res = the_uart_driver->open();
+
+    if (res) {
+    	log_error("uart_block init failed %u", res);
+    	download_complete(res);
+    }
+
+    download_count = 0;
+    atwilc3000_start();
+}
+
+// not used currently
+
+static const btstack_chipset_t btstack_chipset_atwilc3000 = {
+    "atwilc3000",
+    NULL, // chipset_init not used
+    NULL, // chipset_next_command not used
+    NULL, // chipset_set_baudrate_command not needed as we're connected via SPI
+    NULL, // chipset_set_bd_addr not provided
+};
+
+// MARK: public API
+const btstack_chipset_t * btstack_chipset_atwilc3000_instance(void){
+    return &btstack_chipset_atwilc3000;
+}
+
diff --git a/chipset/atwilc3000/btstack_chipset_atwilc3000.h b/chipset/atwilc3000/btstack_chipset_atwilc3000.h
new file mode 100644
index 000000000..6abb9b543
--- /dev/null
+++ b/chipset/atwilc3000/btstack_chipset_atwilc3000.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2014 BlueKitchen GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ * 4. Any redistribution, use, or modification is done solely for
+ *    personal benefit and not for any commercial purpose or for
+ *    monetary gain.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
+ * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Please inquire about commercial licensing options at 
+ * contact@bluekitchen-gmbh.com
+ *
+ */
+
+/*
+ *  btstack_chipset_atwilc3000.c
+ *
+ *  Adapter to use atwilc3000-based chipsets with BTstack
+ *  
+ */
+
+#ifndef __BTSTACK_CHIPSET_ATWILC3000_H
+#define __BTSTACK_CHIPSET_ATWILC3000_H
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+#include "btstack_chipset.h"
+#include "btstack_uart_block.h"
+
+/**
+ * @brief get chipset instance
+ */
+const btstack_chipset_t * btstack_chipset_atwilc3000_instance(void);
+
+/**
+ * @brief Download firmware via uart_driver
+ * @param uart_driver -- already initialized
+ * @param done callback. 0 = Success
+ */
+void btstack_chipset_atwilc3000_download_firmware(const btstack_uart_block_t * uart_driver, const uint8_t * fw, uint32_t fw_size, void (*done)(int result));
+
+#if defined __cplusplus
+}
+#endif
+
+#endif // __BTSTACK_CHIPSET_ATWILC3000_H
diff --git a/port/posix-h4-atwilc3000/.gitignore b/port/posix-h4-atwilc3000/.gitignore
new file mode 100644
index 000000000..11e6e4efd
--- /dev/null
+++ b/port/posix-h4-atwilc3000/.gitignore
@@ -0,0 +1,50 @@
+ancs_client_demo
+ancs_client_demo.h
+ble_central_test
+ble_peripheral
+ble_peripheral_sm_minimal
+ble_peripheral_test
+bluetooth_init_cc2560_2.44.c
+bluetooth_init_cc2560a_2.14.c
+bluetooth_init_cc2560B_1.2_BT_Spec_4.0.c
+bluetooth_init_cc2564_2.14.c
+bluetooth_init_cc2564B_1.2_BT_Spec_4.0.c
+bnep_test
+classic_test
+gap_dedicated_bonding
+gap_inquiry
+gap_inquiry_and_bond
+gap_le_advertisements
+gatt_battery_query
+gatt_browser
+hfp_ag_demo
+hfp_hf_demo
+hsp_ag_demo
+hsp_ag_test
+hsp_hs_demo
+hsp_hs_test
+l2cap_test
+le_counter
+le_counter.h
+le_streamer
+le_streamer.h
+led_counter
+profile.h
+sco_input.wav
+sdp_bnep_query
+sdp_general_query
+sdp_rfcomm_query
+sm_pairing_peripheral.h
+spp_and_le_counter
+spp_and_le_counter.h
+spp_counter
+spp_streamer
+TIInit_12.10.28.c
+TIInit_12.8.32.c
+gatt_battery_query.h
+gatt_browser.h
+le_streamer_client
+pbap_client_demo
+sm_pairing_central
+sm_pairing_peripheral
+
diff --git a/port/posix-h4-atwilc3000/Makefile b/port/posix-h4-atwilc3000/Makefile
new file mode 100644
index 000000000..77247f88f
--- /dev/null
+++ b/port/posix-h4-atwilc3000/Makefile
@@ -0,0 +1,44 @@
+# Makefile for libusb based examples
+BTSTACK_ROOT = ../..
+
+CORE += \
+	btstack_chipset_atwilc3000.c \
+	wilc3000_bt_firmware.c \
+	btstack_link_key_db_fs.c \
+	btstack_run_loop_posix.c \
+	btstack_uart_block_posix.c \
+	hci_transport_h4.c \
+	le_device_db_fs.c \
+	main.c \
+	wav_util.c 					\
+	btstack_stdin_posix.c \
+
+# examples
+include ${BTSTACK_ROOT}/example/Makefile.inc
+
+CFLAGS  += -g -Wall -Werror \
+	-I$(BTSTACK_ROOT)/platform/posix \
+	-I$(BTSTACK_ROOT)/chipset/atwilc3000 \
+	-I$(BTSTACK_ROOT)/platform/embedded \
+
+VPATH += ${BTSTACK_ROOT}/platform/posix
+VPATH += ${BTSTACK_ROOT}/chipset/atwilc3000
+
+ifeq ($(OS),Windows_NT)
+LDFLAGS += -lws2_32
+endif
+
+# Command Line examples require porting to win32, so only build on other unix-ish hosts
+ifneq ($(OS),Windows_NT)
+EXAMPLES += ${EXAMPLES_CLI}
+endif
+
+# use pkg-config for portaudio
+# CFLAGS  += $(shell pkg-config portaudio-2.0 --cflags) -DHAVE_PORTAUDIO
+# LDFLAGS += $(shell pkg-config portaudio-2.0 --libs)
+# hard coded flags for portaudio in /usr/local/lib
+# CFLAGS  += -I/usr/local/include -DHAVE_PORTAUDIO
+# LDFLAGS += -L/sw/lib -lportaudio -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,Carbon
+
+all: ${EXAMPLES}
+
diff --git a/port/posix-h4-atwilc3000/README.md b/port/posix-h4-atwilc3000/README.md
new file mode 100644
index 000000000..c2635b0c5
--- /dev/null
+++ b/port/posix-h4-atwilc3000/README.md
@@ -0,0 +1,9 @@
+# POSIX H4 Port for Atmel ATWILC3000
+
+This port allows to use the ATWILC3000 connected via UART with BTstack running on a POSIX host system.
+
+It first downloads the hci_581_active_uart.hex firmware from the [GitHub atwilc3000/firmware](https://github.com/atwilc3000/firmware) repo, before BTstack starts up.
+
+Please note that it does not detect if the firmware has already been downloaded, so you need to reset the ATWILC3000 before starting an example.
+
+Tested with the official ATWILC3000 SHIELD on OS X.
diff --git a/port/posix-h4-atwilc3000/btstack_config.h b/port/posix-h4-atwilc3000/btstack_config.h
new file mode 100644
index 000000000..0dcef36b5
--- /dev/null
+++ b/port/posix-h4-atwilc3000/btstack_config.h
@@ -0,0 +1,33 @@
+//
+// btstack_config.h for generic POSIX H4 port
+//
+
+#ifndef __BTSTACK_CONFIG
+#define __BTSTACK_CONFIG
+
+// Port related features
+#define HAVE_MALLOC
+#define HAVE_POSIX_FILE_IO
+#define HAVE_BTSTACK_STDIN
+#define HAVE_POSIX_TIME
+
+// BTstack features that can be enabled
+#define ENABLE_BLE
+#define ENABLE_CLASSIC
+#define ENABLE_HFP_WIDE_BAND_SPEECH
+#define ENABLE_LE_CENTRAL
+#define ENABLE_LE_PERIPHERAL
+#define ENABLE_LE_SECURE_CONNECTIONS
+#define ENABLE_LE_DATA_LENGTH_EXTENSION
+#define ENABLE_LOG_ERROR
+#define ENABLE_LOG_INFO 
+#define ENABLE_SCO_OVER_HCI
+#define ENABLE_SDP_DES_DUMP
+// #define ENABLE_EHCILL
+
+// BTstack configuration. buffers, sizes, ...
+#define HCI_INCOMING_PRE_BUFFER_SIZE 14 // sizeof benep heade, avoid memcpy
+#define HCI_ACL_PAYLOAD_SIZE (1691 + 4)
+
+#endif
+
diff --git a/port/posix-h4-atwilc3000/main.c b/port/posix-h4-atwilc3000/main.c
new file mode 100644
index 000000000..4631c80dd
--- /dev/null
+++ b/port/posix-h4-atwilc3000/main.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2014 BlueKitchen GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ * 4. Any redistribution, use, or modification is done solely for
+ *    personal benefit and not for any commercial purpose or for
+ *    monetary gain.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
+ * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Please inquire about commercial licensing options at 
+ * contact@bluekitchen-gmbh.com
+ *
+ */
+
+#define __BTSTACK_FILE__ "main.c"
+
+// *****************************************************************************
+//
+// minimal setup for HCI code
+//
+// *****************************************************************************
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include "btstack_config.h"
+
+#include "btstack_debug.h"
+#include "btstack_event.h"
+#include "btstack_link_key_db_fs.h"
+#include "btstack_memory.h"
+#include "btstack_run_loop.h"
+#include "btstack_run_loop_posix.h"
+#include "hci.h"
+#include "hci_dump.h"
+#include "btstack_stdin.h"
+
+#include "btstack_chipset_atwilc3000.h"
+#include "wilc3000_bt_firmware.h"
+
+static int main_argc;
+static const char ** main_argv;
+static const btstack_uart_block_t * uart_driver;
+static btstack_uart_config_t uart_config;
+
+int btstack_main(int argc, const char * argv[]);
+
+static hci_transport_config_uart_t transport_config = {
+    HCI_TRANSPORT_CONFIG_UART,
+    115200,
+    0,  // main baudrate
+    0,  // flow control
+    NULL,
+};
+
+static btstack_packet_callback_registration_t hci_event_callback_registration;
+
+static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
+    if (packet_type != HCI_EVENT_PACKET) return;
+    switch (hci_event_packet_get_type(packet)){
+        case BTSTACK_EVENT_STATE:
+            if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) break;
+            printf("BTstack up and running.\n");
+            break;
+        default:
+            break;
+    }
+}
+
+static void sigint_handler(int param){
+    UNUSED(param);
+
+    printf("CTRL-C - SIGINT received, shutting down..\n");   
+    log_info("sigint_handler: shutting down");
+
+    // reset anyway
+    btstack_stdin_reset();
+
+    // power down
+    hci_power_control(HCI_POWER_OFF);
+    hci_close();
+    log_info("Good bye, see you.\n");    
+    exit(0);
+}
+
+static int led_state = 0;
+void hal_led_toggle(void){
+    led_state = 1 - led_state;
+    printf("LED State %u\n", led_state);
+}
+
+static void phase2(int status){
+
+    if (status){
+        printf("Download firmware failed\n");
+        return;
+    }
+
+    printf("Phase 2: Main app\n");
+
+    // init HCI
+    const hci_transport_t * transport = hci_transport_h4_instance(uart_driver);
+    const btstack_link_key_db_t * link_key_db = btstack_link_key_db_fs_instance();
+    hci_init(transport, (void*) &transport_config);
+    hci_set_link_key_db(link_key_db);
+    
+    // inform about BTstack state
+    hci_event_callback_registration.callback = &packet_handler;
+    hci_add_event_handler(&hci_event_callback_registration);
+
+    // handle CTRL-c
+    signal(SIGINT, sigint_handler);
+
+    // setup app
+    btstack_main(main_argc, main_argv);
+}
+
+
+int main(int argc, const char * argv[]){
+
+	/// GET STARTED with BTstack ///
+	btstack_memory_init();
+    btstack_run_loop_init(btstack_run_loop_posix_get_instance());
+	    
+    // use logger: format HCI_DUMP_PACKETLOGGER, HCI_DUMP_BLUEZ or HCI_DUMP_STDOUT
+    hci_dump_open("/tmp/hci_dump.pklg", HCI_DUMP_STDOUT);
+
+    // pick serial port and configure uart block driver
+    transport_config.device_name = "/dev/tty.usbserial-A96PXBJ7";
+    uart_driver = btstack_uart_block_posix_instance();
+
+    // extract UART config from transport config, but overide initial uart speed
+    uart_config.baudrate    = 115200;
+    uart_config.flowcontrol = 0;
+    uart_config.device_name = transport_config.device_name;
+    uart_driver->init(&uart_config);
+
+    main_argc = argc;
+    main_argv = argv;
+
+    // phase #1 download firmware
+    printf("Phase 1: Download firmware\n");
+
+    // phase #2 start main app
+    btstack_chipset_atwilc3000_download_firmware(uart_driver, atwilc3000_fw_data, atwilc3000_fw_size, &phase2);
+    // phase2(0);
+
+    // go
+    btstack_run_loop_execute();    
+    return 0;
+}