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timaccop.py
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timaccop.py
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import serial
ZMAC_ACK_WAIT_DURATION = 0x40
ZMAC_ASSOCIATION_PERMIT = 0x41
ZMAC_AUTO_REQUEST = 0x42
ZMAC_BATT_LIFE_EXT = 0x43
ZMAC_BATT_LEFT_EXT_PERIODS = 0x44
ZMAC_BEACON_MSDU = 0x45
ZMAC_BEACON_MSDU_LENGTH = 0x46
ZMAC_BEACON_ORDER = 0x47
ZMAC_BEACON_TX_TIME = 0x48
ZMAC_BSN = 0x49
ZMAC_COORD_EXTENDED_ADDRESS = 0x4A
ZMAC_COORD_SHORT_ADDRESS = 0x4B
ZMAC_DSN = 0x4C
ZMAC_GTS_PERMIT = 0x4D
ZMAC_MAX_CSMA_BACKOFFS = 0x4E
ZMAC_MIN_BE = 0x4F
ZMAC_PANID = 0x50
ZMAC_PROMISCUOUS_MODE = 0x51
ZMAC_RX_ON_IDLE = 0x52
ZMAC_SHORT_ADDRESS = 0x53
ZMAC_SUPERFRAME_ORDER = 0x54
ZMAC_TRANSACTION_PERSISTENCE_TIME = 0x55
ZMAC_ASSOCIATED_PAN_COORD = 0x56
ZMAC_MAX_BE = 0x57
ZMAC_FRAME_TOTAL_WAIT_TIME = 0x58
ZMAC__MAC_FRAME_RETRIES = 0x59
ZMAC_RESPONSE_WAIT_TIME = 0x5A
ZMAC_SYNC_SYMBOL_OFFSET = 0x5B
ZMAC_TIMESTAMP_SUPPORTED = 0x5C
ZMAC_SECURITY_ENABLED = 0x5D
ZMAC_PHY_TRANSMIT_POWER = 0xE0
ZMAC_LOGICAL_CHANNEL = 0xE1
ZMAC_EXTENDED_ADDRESS = 0xE2
ZMAC_ALT_BE = 0xE3
MAC_INIT = [ 0x00, 0x22, 0x02 ]
MAC_RESET_REQ = [ 0x01, 0x22, 0x01, 0x01]
MAC_SET_REQ = [ 0x11, 0x22, 0x09 ] # + Attribute, AttributeValue
MAC_GET_REQ = [ 0x01, 0x22, 0x08 ] # + Attribute
MAC_START_REQ = [ 0x23, 0x22, 0x03 ]
UTIL_CALLBACK_SUB_CMD = [ 0x03, 0x27, 0x06, 0xff, 0xff, 1 ]
pkt_callback = None
ser = None
def fcs(data):
cs = 0
for ch in data:
cs ^= ch
#print("cs:", cs)
return cs
def frame(data):
cs = fcs(data)
out = [0xfe]
out += data
#cs = fcs(out)
out += [cs]
return bytes(out)
def await_res():
b = ser.read(1)
if not len(b):
return None
pre = b[0]
if pre != 0xfe:
print("incorrect preamble:", pre)
return
head = ser.read(3)
dlen = head[0]
data = ser.read(dlen) #2bytes cmd + data
frm = head + data
ccs = fcs(frm)
cs = ser.read(1)[0]
#print("R:", (bytes([pre])+frm+bytes([cs])).hex())
if cs != ccs:
print("incorrect fcs, expected", ccs, "got", cs)
return frm
def send_sreq(data):
fr = frame(data)
#print("W:", fr.hex())
ser.write(fr)
return await_res()
def send_areq(data):
fr = frame(data)
#print("W:", fr)
ser.write(fr)
def mac_set_req(attribute, value):
if type(value) is not list:
value = [value]
return send_sreq(MAC_SET_REQ + [attribute] + value + [0]*(0x10 - len(value)))
def mac_get_req(attribute):
res = send_sreq(MAC_GET_REQ + [attribute])
#print(res[4:].hex())
return res
def mac_start_req(panid, channel):
start_time = [0]*4
pan_id = panid
logical_channel = channel
channel_page = 0
beacon_order = 15
super_frame_order = 0
pan_coordinator = 1
battery_life_ext = 0
coord_realignment = 0
realign_key_source = [0]*8
realign_security_level = 0
realign_key_id_mode = 0
realing_key_index = 0
beacon_key_source = [0]*8
beacon_security_level = 0
beacon_key_id_mode = 0
beacon_key_index = 0
start_params = start_time + pan_id + [
logical_channel,
channel_page,
beacon_order,
super_frame_order,
pan_coordinator,
battery_life_ext,
coord_realignment,
] + realign_key_source + [
realign_security_level,
realign_key_id_mode,
realing_key_index,
] + beacon_key_source + [
beacon_security_level,
beacon_key_id_mode,
beacon_key_index,
]
return send_sreq(MAC_START_REQ + start_params)
MAC_TXOPTION_ACK = 0x01
MAC_TXOPTION_GTS = 0x02
MAC_TXOPTION_INDIRECT = 0x04
MAC_TXOPTION_NO_RETRANS = 0x10
MAC_TXOPTION_NO_CNF = 0x20
MAC_TXOPTION_ALT_BE = 0x40
MAC_TXOPTION_PWR_CHAN = 0x80
def mac_data_req(dst_add, dst_panid, handle, dsn, data):
if len(dst_add) == 2:
dst_add_mode = 2
else:
dst_add_mode = 3
dst_add = list(dst_add) + [0]*(8-len(dst_add))
dst_panid = list(dst_panid)
data = list(data)
src_add_mode = 3
tx_option = 0 # + MAC_TXOPTION_PWR_CHAN
logical_channel = 0
power = 127
key_source = [0]*8
security_level = 0
key_id_mode = 0
key_index = 0
msdu_length = len(data)
msdu = data
params = [ dst_add_mode ] + dst_add + dst_panid + [ src_add_mode, handle, tx_option,
logical_channel, power ] + key_source + [ security_level, key_id_mode, key_index, msdu_length ]
mac_set_req(ZMAC_DSN, dsn)
send_sreq(bytes([ len(params) + len(data), 0x22, 0x05 ] + params + msdu))
def parse_mac_data_ind(data):
pkt = { "type": "parse_mac_data_ind" }
pkt["src_add_mode"] = data[3]
src_add = list(data[4:12])
src_add.reverse()
if pkt["src_add_mode"] == 2:
pkt["src_add"] = src_add[:2]
else:
pkt["src_add"] = src_add[:8]
pkt["dst_add_mode"] = data[12]
if pkt["dst_add_mode"] == 2:
pkt["dst_add"] = data[13:15]
else:
pkt["dst_add"] = data[13:21]
pkt["timestamp"] = data[21:25]
pkt["timestamp2"] = data[25:27]
pkt["src_pan_id"] = data[27:29]
pkt["dst_pan_id"] = data[29:31]
pkt["link_quality"] = data[31]
pkt["correlation"] = data[32]
pkt["rssi"] = data[33]
pkt["dsn"] = data[34]
pkt["key_source"] = data[35:43]
pkt["security_level"] = data[43]
pkt["key_id_mode"] = data[44]
pkt["key_index"] = data[45]
pkt["length"] = data[46]
pkt["data"] = data[47:]
return pkt
def parse_mac_data_cnf(data):
pkt = { "type": "mac_data_cnf" }
pkt["status"] = data[3]
pkt["handle"] = data[4]
pkt["timestamp"] = data[5:9]
pkt["timestamp2"] = data[9:11]
return pkt
def parse_areq(data):
dlen = data[0]
cmd0 = data[1]
cmd1 = data[2]
pkt = None
if cmd0 == 0x42 and cmd1 == 0x85:
pkt = parse_mac_data_ind(data)
if pkt_callback:
pkt_callback(pkt)
if cmd0 == 0x42 and cmd1 == 0x84:
pkt = parse_mac_data_cnf(data)
if pkt:
#print("Got cmd\n", pkt)
if pkt["type"] == "mac_data_cnf":
#sys.exit(0)
pass
else:
#print("Unknown cmd\n", data)
pass
def init(port, pan_id, channel, ext_add, pk):
global pkt_callback
pkt_callback = pk
global ser
ser = serial.Serial(port, timeout=1)
ser.flushInput()
ext_add.reverse()
short_add = ext_add[-2:]
send_sreq(MAC_INIT)
send_sreq(MAC_RESET_REQ)
# https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/426380/ti-mac-cop-cc2531-asynchronous-responses
send_sreq(UTIL_CALLBACK_SUB_CMD)
mac_set_req(ZMAC_EXTENDED_ADDRESS, ext_add)
mac_set_req(ZMAC_SHORT_ADDRESS, short_add)
mac_get_req(ZMAC_EXTENDED_ADDRESS)
mac_get_req(ZMAC_SHORT_ADDRESS)
mac_set_req(ZMAC_RX_ON_IDLE, 1)
mac_get_req(ZMAC_RX_ON_IDLE)
mac_set_req(ZMAC_PROMISCUOUS_MODE, 1)
mac_get_req(ZMAC_PROMISCUOUS_MODE)
mac_get_req(ZMAC_LOGICAL_CHANNEL)
mac_get_req(ZMAC_SECURITY_ENABLED)
mac_start_req(pan_id, channel)
def run():
while True:
data = await_res()
if data:
parse_areq(data)