def __init__(self, data=''):
HciPacket.sequence_number = (HciPacket.sequence_number + 1) % 8
temp_data = []
logger.debug("Data " + str(len(data)) + ": %s", data)
slip_bytes = slip_parts_to_four_bytes(HciPacket.sequence_number,
DATA_INTEGRITY_CHECK_PRESENT,
RELIABLE_PACKET, HCI_PACKET_TYPE,
len(data))
temp_data += [ord(x) for x in slip_bytes]
logger.debug("Add slip preamble: %s", [hex(i) for i in temp_data])
temp_data += [ord(x) for x in data]
logger.debug("Add Data: %s", [hex(i) for i in temp_data])
# Add escape characters
crc = crc16.calc_crc16(bytes(temp_data), crc=0xffff)
logger.debug("CRC: %s", hex(crc))
temp_data.append(crc & 0xFF)
temp_data.append((crc & 0xFF00) >> 8)
logger.debug("Add CRC: %s", [hex(i) for i in temp_data])
encoded = slip_encode_esc_chars("".join(
chr(x) for x in bytearray(temp_data)))
temp_data = [ord(x) for x in encoded]
logger.debug("SLIP encoded: %s", [hex(i) for i in temp_data])
self.data = [0xc0]
self.data += temp_data
self.data += [0xc0]
logger.debug("Final packet: %s", [hex(i) for i in self.data])
def test_dfu_methods(self):
def timeout_callback(log_message):
logging.debug("timeout_callback. Message: %s", log_message)
def progress_callback(progress, log_message, done):
logging.debug("Log message: %s, Progress: %d, done: %s",
log_message, progress, done)
def error_callback(log_message=""):
logging.error("Log message: %s", log_message)
self.transport.register_events_callback(DfuEvent.TIMEOUT_EVENT,
timeout_callback)
self.transport.register_events_callback(DfuEvent.PROGRESS_EVENT,
progress_callback)
self.transport.register_events_callback(DfuEvent.ERROR_EVENT,
error_callback())
firmware = ''
test_firmware_path = os.path.join("firmwares",
"pca10028_nrf51422_xxac_blinky.bin")
with open(test_firmware_path, 'rb') as f:
while True:
data = f.read()
if data:
firmware += data
else:
break
crc = crc16.calc_crc16(firmware, 0xffff)
self.transport.open()
# Sending start DFU command to target
self.transport.send_start_dfu(HexType.APPLICATION,
app_size=len(firmware),
softdevice_size=0,
bootloader_size=0)
# Sending DFU init packet to target
init_packet_vars = {
PacketField.DEVICE_TYPE: 1,
PacketField.DEVICE_REVISION: 2,
PacketField.APP_VERSION: 0xfffa,
PacketField.REQUIRED_SOFTDEVICES_ARRAY: [0x005a],
PacketField.NORDIC_PROPRIETARY_OPT_DATA_FIRMWARE_CRC16: crc
}
pkt = Packet(init_packet_vars)
self.transport.send_init_packet(pkt.generate_packet())
# Sending firmware to target
self.transport.send_firmware(firmware)
# Validating firmware
self.transport.send_validate_firmware()
self.transport.send_activate_firmware()
self.transport.close()
def test_dfu_methods(self):
def timeout_callback(log_message):
logging.debug("timeout_callback. Message: %s", log_message)
def progress_callback(progress, log_message, done):
logging.debug("Log message: %s, Progress: %d, done: %s", log_message, progress, done)
def error_callback(log_message=""):
logging.error("Log message: %s", log_message)
self.transport.register_events_callback(DfuEvent.TIMEOUT_EVENT, timeout_callback)
self.transport.register_events_callback(DfuEvent.PROGRESS_EVENT, progress_callback)
self.transport.register_events_callback(DfuEvent.ERROR_EVENT, error_callback())
firmware = ''
test_firmware_path = os.path.join("firmwares", "pca10028_nrf51422_xxac_blinky.bin")
with open(test_firmware_path, 'rb') as f:
while True:
data = f.read()
if data:
firmware += data
else:
break
crc = crc16.calc_crc16(firmware, 0xffff)
self.transport.open()
# Sending start DFU command to target
self.transport.send_start_dfu(HexType.APPLICATION,
app_size=len(firmware),
softdevice_size=0,
bootloader_size=0)
# Sending DFU init packet to target
init_packet_vars = {
PacketField.DEVICE_TYPE: 1,
PacketField.DEVICE_REVISION: 2,
PacketField.APP_VERSION: 0xfffa,
PacketField.REQUIRED_SOFTDEVICES_ARRAY: [0x005a],
PacketField.NORDIC_PROPRIETARY_OPT_DATA_FIRMWARE_CRC16: crc
}
pkt = Packet(init_packet_vars)
self.transport.send_init_packet(pkt.generate_packet())
# Sending firmware to target
self.transport.send_firmware(firmware)
# Validating firmware
self.transport.send_validate_firmware()
self.transport.send_activate_firmware()
self.transport.close()
def __init__(self, data=''):
HciPacket.sequence_number = (HciPacket.sequence_number + 1) % 8
self.temp_data = ''
self.temp_data += slip_parts_to_four_bytes(HciPacket.sequence_number,
DATA_INTEGRITY_CHECK_PRESENT,
RELIABLE_PACKET,
HCI_PACKET_TYPE,
len(data))
self.temp_data += data
# Add escape characters
crc = crc16.calc_crc16(self.temp_data, crc=0xffff)
self.temp_data += chr(crc & 0xFF)
self.temp_data += chr((crc & 0xFF00) >> 8)
self.temp_data = slip_encode_esc_chars(self.temp_data)
self.data = chr(0xc0)
self.data += self.temp_data
self.data += chr(0xc0)
def __init__(self, data=''):
HciPacket.sequence_number = (HciPacket.sequence_number + 1) % 8
self.temp_data = ''
self.temp_data += slip_parts_to_four_bytes(HciPacket.sequence_number,
DATA_INTEGRITY_CHECK_PRESENT,
RELIABLE_PACKET,
HCI_PACKET_TYPE,
len(data))
self.temp_data += data
# Add escape characters
crc = crc16.calc_crc16(self.temp_data, crc=0xffff)
self.temp_data += chr(crc & 0xFF)
self.temp_data += chr((crc & 0xFF00) >> 8)
self.temp_data = slip_encode_esc_chars(self.temp_data)
self.data = chr(0xc0)
self.data += self.temp_data
self.data += chr(0xc0)
def calculate_crc(crc, firmware_filename):
"""
Calculates CRC16 has on provided firmware filename
:type str firmware_filename:
"""
data_buffer = b''
read_size = 4096
with open(firmware_filename, 'rb') as firmware_file:
while True:
data = firmware_file.read(read_size)
if data:
data_buffer += data
else:
break
if crc == 16:
return calc_crc16(data_buffer, 0xffff)
elif crc == 32:
return binascii.crc32(data_buffer)
else:
raise NordicSemiException("Invalid CRC type")
