Raspberry PI BTLE 可以发现 Fitbit 和 Scale 设备，但无法配对
Raspberry PI BTLE can discover a Fitbit and a Scale device, but cannot pair
我一直在尝试将 FitBit Inspire HR and a RENPHO ES-26R 量表与我的 Raspberry Pi（3B+、4B 和零）配对，结果都是一样的。 运行 bluetoothctl (v5.50)，可以看到设备（ED:67是刻度， 01:C5 是 Fitbit) :
...
[CHG] Device ED:67:37:60:78:22 ManufacturerData Key: 0xffff
[CHG] Device ED:67:37:60:78:22 ManufacturerData Value:
aa bb ed 67 37 60 78 22 00 01 23 14 ff ff ff 14 ...g7`x"..#.....
00 6a 04 4d a2 02 1d 0c .j.M....
[CHG] Device 01:C5:59:47:49:F9 RSSI: -47
[CHG] Device 01:C5:59:47:49:F9 TxPower: 3
...
规模
当我尝试配对或连接体重秤时，bluetoothctl、hcidump 和 gatttool 的输出如下：
bluetoothctl
Attempting to pair with ED:67:37:60:78:22
Failed to pair: org.bluez.Error.AuthenticationCanceled
hcidump
> HCI Event: Command Complete (0x0e) plen 4
LE Remove Device From White List (0x08|0x0012) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Add Device To White List (0x08|0x0011) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Parameters (0x08|0x000b) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
gatttool
> sudo gatttool -b ED:67:37:60:78:22 -I
[ED:67:37:60:78:22][LE]> connect
Attempting to connect to ED:67:37:60:78:22
Error: connect error: Connection refused (111)
根据我看到的几个线程，我尝试使用 public 和随机地址类型，没有任何变化。 hcidump 似乎没有对 Scale 进行太多操作。
编辑
进一步检查秤，似乎不是 "connectable"。鉴于没有定义的服务或特征，我开始查看 广告 中的“制造数据”。我可以看到随着比例尺的测量值发生变化，部分数据也在发生变化：
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 00 00 4d a2 02 8a 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 d2 00 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 d2 00 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 60 04 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 68 06 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 68 06 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 ad 07 4d a2 02 8c 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 ad 07 4d a2 02 8c 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4e 7f 7e 3a 14 00 6b 08 4d a2 02 8c 25
现在我只需要确认更新的部分实际上是重量数据——一旦我弄清楚汤里有什么（例如，计量单位、重量等）。
FITBIT
对于Fitbit，输出多了很多，但还是配对失败：
bluetoothctl
pair 01:C5:59:47:49:F9
Attempting to pair with 01:C5:59:47:49:F9
[CHG] Device 01:C5:59:47:49:F9 Connected: yes
[CHG] Device 01:C5:59:47:49:F9 ServicesResolved: yes
[CHG] Device 01:C5:59:47:49:F9 ServicesResolved: no
[CHG] Device 01:C5:59:47:49:F9 Connected: no
Failed to pair: org.bluez.Error.AuthenticationCanceled
hcidump
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Parameters (0x08|0x000b) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Status (0x0f) plen 4
LE Create Connection (0x08|0x000d) status 0x00 ncmd 1
> HCI Event: Command Status (0x0f) plen 4
LE Read Remote Used Features (0x08|0x0016) status 0x00 ncmd 1
> HCI Event: Command Complete (0x0e) plen 14
LE Read Remote Used Features (0x08|0x0016) ncmd 1
> HCI Event: Command Status (0x0f) plen 4
Disconnect (0x01|0x0006) status 0x00 ncmd 1
> HCI Event: Disconn Complete (0x05) plen 4
status 0x00 handle 64 reason 0x16
Reason: Connection Terminated by Local Host
gatttool
与 Scale 不同，我可以使用 gatttool 连接到 Fitbit 并检索特征：
[01:C5:59:47:49:F9][LE]> connect
Attempting to connect to 01:C5:59:47:49:F9
Connection successful
[01:C5:59:47:49:F9][LE]> characteristics
handle: 0x0002, char properties: 0x02, char value handle: 0x0003, uuid: 00002a00-0000-1000-8000-00805f9b34fb
handle: 0x0004, char properties: 0x02, char value handle: 0x0005, uuid: 00002a01-0000-1000-8000-00805f9b34fb
handle: 0x0006, char properties: 0x02, char value handle: 0x0007, uuid: 00002a04-0000-1000-8000-00805f9b34fb
handle: 0x0008, char properties: 0x02, char value handle: 0x0009, uuid: 00002aa6-0000-1000-8000-00805f9b34fb
handle: 0x000b, char properties: 0x20, char value handle: 0x000c, uuid: 00002a05-0000-1000-8000-00805f9b34fb
handle: 0x000f, char properties: 0x02, char value handle: 0x0010, uuid: adabfb04-6e7d-4601-bda2-bffaa68956ba
handle: 0x0011, char properties: 0x06, char value handle: 0x0012, uuid: adabfb02-6e7d-4601-bda2-bffaa68956ba
handle: 0x0013, char properties: 0x12, char value handle: 0x0014, uuid: adabfb03-6e7d-4601-bda2-bffaa68956ba
handle: 0x0016, char properties: 0x10, char value handle: 0x0017, uuid: adabfb01-6e7d-4601-bda2-bffaa68956ba
handle: 0x0019, char properties: 0x20, char value handle: 0x001a, uuid: adabfb05-6e7d-4601-bda2-bffaa68956ba
handle: 0x001d, char properties: 0x12, char value handle: 0x001e, uuid: 558dfa01-4fa8-4105-9f02-4eaa93e62980
handle: 0x0021, char properties: 0x02, char value handle: 0x0022, uuid: 00002a29-0000-1000-8000-00805f9b34fb
handle: 0x0023, char properties: 0x02, char value handle: 0x0024, uuid: 00002a24-0000-1000-8000-00805f9b34fb
handle: 0x0025, char properties: 0x02, char value handle: 0x0026, uuid: 00002a25-0000-1000-8000-00805f9b34fb
handle: 0x0027, char properties: 0x02, char value handle: 0x0028, uuid: 00002a27-0000-1000-8000-00805f9b34fb
handle: 0x0029, char properties: 0x02, char value handle: 0x002a, uuid: 00002a26-0000-1000-8000-00805f9b34fb
handle: 0x002b, char properties: 0x02, char value handle: 0x002c, uuid: 00002a28-0000-1000-8000-00805f9b34fb
handle: 0x002d, char properties: 0x02, char value handle: 0x002e, uuid: 00002a23-0000-1000-8000-00805f9b34fb
handle: 0x002f, char properties: 0x02, char value handle: 0x0030, uuid: 00002a2a-0000-1000-8000-00805f9b34fb
handle: 0x0031, char properties: 0x02, char value handle: 0x0032, uuid: 00002a50-0000-1000-8000-00805f9b34fb
附加信息
蓝牙服务状态
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2020-04-09 18:32:27 BST; 24min ago
Docs: man:bluetoothd(8)
Main PID: 5515 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
Memory: 1.1M
CGroup: /system.slice/bluetooth.service
└─5515 /usr/lib/bluetooth/bluetoothd --compat --noplugin=sap -E
Apr 09 18:32:27 archer systemd[1]: Starting Bluetooth service...
Apr 09 18:32:27 archer bluetoothd[5515]: Bluetooth daemon 5.50
Apr 09 18:32:27 archer systemd[1]: Started Bluetooth service.
Apr 09 18:32:27 archer bluetoothd[5515]: Excluding (cli) sap
Apr 09 18:32:27 archer bluetoothd[5515]: Bluetooth management interface 1.14 initialized
dmesg | grep 蓝牙
[ 12.451287] Bluetooth: Core ver 2.22
[ 12.451337] Bluetooth: HCI device and connection manager initialized
[ 12.452111] Bluetooth: HCI socket layer initialized
[ 12.452123] Bluetooth: L2CAP socket layer initialized
[ 12.452151] Bluetooth: SCO socket layer initialized
[ 12.462111] Bluetooth: HCI UART driver ver 2.3
[ 12.462118] Bluetooth: HCI UART protocol H4 registered
[ 12.462172] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 12.462284] Bluetooth: HCI UART protocol Broadcom registered
[ 12.677032] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 12.677038] Bluetooth: BNEP filters: protocol multicast
[ 12.677048] Bluetooth: BNEP socket layer initialized
[ 818.140511] Bluetooth: RFCOMM TTY layer initialized
[ 818.140529] Bluetooth: RFCOMM socket layer initialized
[ 818.140542] Bluetooth: RFCOMM ver 1.11
连接
所有 PI 上的 WiFi 和蓝牙都处于活动状态，我通过 SSH 连接。
关闭
我浏览了来自多个论坛的许多帖子，并进行了各种建议的配置更改（保持 PI 3B+ 干净作为对照）但没有成功。对于下一步的任何建议或指示，我将不胜感激。一定有什么我遗漏的地方——很可能是一些简单的东西让你们中的大多数人大笑起来，就像你们以前从未大笑过一样:)
感谢您花时间阅读这个冗长的问题。
对于 Scale，我终于能够解码重要的值（权重）。有一些我仍然不知道它们是什么，但主要问题已解决。给定以下位置和值：
Position: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Value: ff ff aa bb ed 67 37 60 78 22 5e 97 4a 74 7f 7e 3a 15 00 6a 04 4d a2 02 4a 3d
映射如下：
- 0-3：目前未知。尚未观察到值发生变化
- 4-9：设备地址
- 10-13: Unix 时间戳
- 14-16：目前未知。观察到值会发生变化，但不是很频繁。
- 17：稳定指标。值为 0x15 (21) 表示秤已稳定测量
- 18：目前未知。总是显示为 00
- 19-20：重量！。虽然磅秤显示的重量是磅，但传输值需要除以 100 才能得出公斤，然后可以根据需要转换为其他单位。
- 21-23：目前未知。尚未观察到值发生变化
- 24：目前未知。测量时数值会有所变化，可能与计算BMI等有关
- 25：目前未知。该值有时会在一天中的不同时间点发生变化。似乎与测量本身没有直接关系。
我曾经 - 错误地 - 试图使用 FitBit 来保持理智；但是，很明显，这两种设备履行和提供的角色和服务——以及它们宣传的方式——根本不相似，所以这是一个糟糕的解决方案集:)。
我希望这能帮助任何其他试图从广告中提供数据的体重秤（特别是 Renpho ES-26R）检索数据的人。如果其他人遇到未知位的含义，请随时对信息发表评论。
谢谢！
太好了，感谢您的详细分析。
我这里有一个RENPHO ES-26R-B。字节 24-25 似乎是一个计数器/索引，它会增加直到测量完成，然后多次发送先前的测量（较小的 idx）。
我使用 python 和 bluepy 来阅读和分析消息：
import os
import time
from datetime import datetime
from bluepy.btle import Scanner, DefaultDelegate
g_idx_old = 0
class ScanDelegate(DefaultDelegate):
def __init__(self):
DefaultDelegate.__init__(self)
def handleDiscovery(self, dev, isNewDev, isNewData):
filter_for_renpho_messages(dev)
def filter_for_renpho_messages(dev):
for (adtype, desc, value) in dev.getScanData():
if(desc == 'Manufacturer'): # idx 255
if(len(dev.scanData[255]) == 26):
dev_addr_manufacturer = dev.scanData[255][4:10].hex()
if(dev.addr.replace(':', '') == dev_addr_manufacturer):
# show_all_messages(dev)
show_only_stable_weight(dev)
def show_all_messages(dev, write_to_file=False):
manufacturer_data = dev.scanData[255]
weight_raw = int.from_bytes(manufacturer_data[19:21], "little")
weight_kg = float(weight_raw)/100.0
index_raw = int.from_bytes(manufacturer_data[24:26], "little")
# print the data
print("{} {} {} {:6.2f}kg {:5}".format(
datetime.now().strftime("%H:%M:%S"), dev.addr,
dev.scanData[255].hex(), weight_kg, index_raw))
# write the data to file (binary)
if(write_to_file):
with open("manufacturer_data.bin", "ab") as data_file:
data_file.write(manufacturer_data)
def show_only_stable_weight(dev, write_to_file=True):
global g_idx_old
manufacturer_data = dev.scanData[255]
weight_raw = int.from_bytes(manufacturer_data[19:21], "little")
weight_kg = float(weight_raw)/100.0
idx = int.from_bytes(manufacturer_data[24:26], "little")
# only show weight if the incoming idx is smaller than a prev
if((idx < g_idx_old) and # stable result has smaller idx
((g_idx_old - idx) < 50000)): # ignore overflow
# print the data
print("{} {:6.2f}kg".format(
datetime.now().strftime("%H:%M:%S"), weight_kg))
# write the data to file (CSV)
if(write_to_file):
filename = "weights.csv"
# If file is new, set the header row
if not os.path.isfile(filename):
with open("weights.csv", "a") as csv_file:
csv_file.write("timestamp;datetime;weight;kg\n")
# append current measurement
with open("weights.csv", "a") as data_file:
data_file.write("{};{};{};kg\n".format(
int(time.time()), datetime.now().strftime("%d.%m.%Y %H:%M:%S"), weight_kg))
g_idx_old = idx
def main():
scanner = Scanner().withDelegate(ScanDelegate())
scanner.scan(timeout=None, passive=True)
if __name__ == "__main__":
main()
在函数show_all_messages中可以将数据写入二进制文件，之后可以使用以下代码进行分析：
from datetime import datetime
with open("manufacturer_data.bin", "rb") as dump_file:
data = dump_file.read()
data_len = len(data)
print("Datalen: {}\n".format(data_len))
for i in range(int(data_len / 26)):
cur_data = data[i*26:(i+1)*26]
# strange, timstamp is big endian, but weight and idx are little endian
timestamp_raw = int.from_bytes(cur_data[10:14], "big")
weight_raw = int.from_bytes(cur_data[19:21], "little")
index_raw = int.from_bytes(cur_data[24:26], "little")
weight_kg = float(weight_raw)/100.0
print("{} | {} {} {} {} {} {} {} {} {} | {} {:5} {:5} | {:6.2f}kg".format(
cur_data.hex(),
cur_data[0:4].hex(), # always "ffffaabb"
cur_data[4:10].hex(), # device address "ed67388f9d27"
cur_data[10:14].hex(), # timestamp
cur_data[14:17].hex(), # Unknown "ffffff"
cur_data[17:18].hex(), # Stabilization? "12" or "13"
cur_data[18:19].hex(), # Unknown "a0"
cur_data[19:21].hex(), # weight
cur_data[21:24].hex(), # Unknown "4f2e03"
cur_data[24:26].hex(), # idx / cnt
datetime.fromtimestamp(timestamp_raw).strftime('%Y-%m-%d %H:%M:%S'),
weight_raw,
index_raw,
weight_kg))
这是分析数据的示例：
weight idx weight idx
|||| |||| |||| ||||
ffffaabbed67388f9d27600b5c9cffffff12a0ae1f4f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 ae1f 4f2e03 9e1d | 2021-01-23 00:15:40 8110 7582 | 81.10kg
ffffaabbed67388f9d27600b5c9cffffff12a0ae1f4f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 ae1f 4f2e03 9e1d | 2021-01-23 00:15:40 8110 7582 | 81.10kg
ffffaabbed67388f9d27600b5c9cffffff12a002214f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 0221 4f2e03 9e1d | 2021-01-23 00:15:40 8450 7582 | 84.50kg
ffffaabbed67388f9d27600b5c9cffffff12a002214f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 0221 4f2e03 9e1d | 2021-01-23 00:15:40 8450 7582 | 84.50kg
ffffaabbed67388f9d27600b5c9dffffff12a0e51f4f2e039f1d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 e51f 4f2e03 9f1d | 2021-01-23 00:15:41 8165 7583 | 81.65kg
ffffaabbed67388f9d27600b5c9dffffff12a00d204f2e03a01d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 0d20 4f2e03 a01d | 2021-01-23 00:15:41 8205 7584 | 82.05kg
ffffaabbed67388f9d27600b5c9dffffff12a00d204f2e03a01d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 0d20 4f2e03 a01d | 2021-01-23 00:15:41 8205 7584 | 82.05kg
ffffaabbed67388f9d27600b5c9fffffff12a008204f2e03a31d | ffffaabb ed67388f9d27 600b5c9f ffffff 12 a0 0820 4f2e03 a31d | 2021-01-23 00:15:43 8200 7587 | 82.00kg
ffffaabbed67388f9d27600b5c9fffffff12a008204f2e03a41d | ffffaabb ed67388f9d27 600b5c9f ffffff 12 a0 0820 4f2e03 a41d | 2021-01-23 00:15:43 8200 7588 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a51d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a51d | 2021-01-23 00:15:44 8200 7589 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a61d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a61d | 2021-01-23 00:15:44 8200 7590 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a61d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a61d | 2021-01-23 00:15:44 8200 7590 | 82.00kg
ffffaabbed67388f9d27600b5ca1ffffff12a008204f2e03a71d | ffffaabb ed67388f9d27 600b5ca1 ffffff 12 a0 0820 4f2e03 a71d | 2021-01-23 00:15:45 8200 7591 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca5ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca5 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:49 8200 7586 | 82.00kg
...
ffffaabbed67388f9d27600b5cb1ffffff13a000004f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 13 a0 0000 4f2e03 be1d | 2021-01-23 00:16:01 0 7614 | 0.00kg
ffffaabbed67388f9d27600b5cb1ffffff12a05d204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 5d20 4f2e03 be1d | 2021-01-23 00:16:01 8285 7614 | 82.85kg
ffffaabbed67388f9d27600b5cb1ffffff12a035204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 3520 4f2e03 be1d | 2021-01-23 00:16:01 8245 7614 | 82.45kg
ffffaabbed67388f9d27600b5cb1ffffff12a035204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 3520 4f2e03 be1d | 2021-01-23 00:16:01 8245 7614 | 82.45kg
ffffaabbed67388f9d27600b5cb1ffffff12a008204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 0820 4f2e03 be1d | 2021-01-23 00:16:01 8200 7614 | 82.00kg
ffffaabbed67388f9d27600b5cb2ffffff12a008204f2e03bf1d | ffffaabb ed67388f9d27 600b5cb2 ffffff 12 a0 0820 4f2e03 bf1d | 2021-01-23 00:16:02 8200 7615 | 82.00kg
ffffaabbed67388f9d27600b5cb2ffffff12a008204f2e03c01d | ffffaabb ed67388f9d27 600b5cb2 ffffff 12 a0 0820 4f2e03 c01d | 2021-01-23 00:16:02 8200 7616 | 82.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a0451f4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 451f 4f2e03 c11d | 2021-01-23 00:16:03 8005 7617 | 80.05kg
ffffaabbed67388f9d27600b5cb3ffffff12a0ca1c4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 ca1c 4f2e03 c11d | 2021-01-23 00:16:03 7370 7617 | 73.70kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c11d | 2021-01-23 00:16:03 0 7617 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c11d | 2021-01-23 00:16:03 0 7617 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c21d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c21d | 2021-01-23 00:16:03 0 7618 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c21d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c21d | 2021-01-23 00:16:03 0 7618 | 0.00kg
ffffaabbed67388f9d27600b5cb4ffffff12a000004f2e03c31d | ffffaabb ed67388f9d27 600b5cb4 ffffff 12 a0 0000 4f2e03 c31d | 2021-01-23 00:16:04 0 7619 | 0.00kg
ffffaabbed67388f9d27600b5cb4ffffff12a000004f2e03c31d | ffffaabb ed67388f9d27 600b5cb4 ffffff 12 a0 0000 4f2e03 c31d | 2021-01-23 00:16:04 0 7619 | 0.00kg
ffffaabbed67388f9d27600b5cb5ffffff12a06c204f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 6c20 4f2e03 c51d | 2021-01-23 00:16:05 8300 7621 | 83.00kg
ffffaabbed67388f9d27600b5cb5ffffff12a0b41e4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 b41e 4f2e03 c51d | 2021-01-23 00:16:05 7860 7621 | 78.60kg
ffffaabbed67388f9d27600b5cb5ffffff12a0b41e4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 b41e 4f2e03 c51d | 2021-01-23 00:16:05 7860 7621 | 78.60kg
ffffaabbed67388f9d27600b5cb5ffffff12a0ae1f4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 ae1f 4f2e03 c51d | 2021-01-23 00:16:05 8110 7621 | 81.10kg
ffffaabbed67388f9d27600b5cb5ffffff12a0df204f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 df20 4f2e03 c61d | 2021-01-23 00:16:05 8415 7622 | 84.15kg
ffffaabbed67388f9d27600b5cb5ffffff12a0bd1f4f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 bd1f 4f2e03 c61d | 2021-01-23 00:16:05 8125 7622 | 81.25kg
ffffaabbed67388f9d27600b5cb5ffffff12a0bd1f4f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 bd1f 4f2e03 c61d | 2021-01-23 00:16:05 8125 7622 | 81.25kg
ffffaabbed67388f9d27600b5cb6ffffff12a0e01f4f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 e01f 4f2e03 c71d | 2021-01-23 00:16:06 8160 7623 | 81.60kg
ffffaabbed67388f9d27600b5cb6ffffff12a0e01f4f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 e01f 4f2e03 c71d | 2021-01-23 00:16:06 8160 7623 | 81.60kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
...
我一直在尝试将 FitBit Inspire HR and a RENPHO ES-26R 量表与我的 Raspberry Pi（3B+、4B 和零）配对，结果都是一样的。 运行 bluetoothctl (v5.50)，可以看到设备（ED:67是刻度， 01:C5 是 Fitbit) :
...
[CHG] Device ED:67:37:60:78:22 ManufacturerData Key: 0xffff
[CHG] Device ED:67:37:60:78:22 ManufacturerData Value:
aa bb ed 67 37 60 78 22 00 01 23 14 ff ff ff 14 ...g7`x"..#.....
00 6a 04 4d a2 02 1d 0c .j.M....
[CHG] Device 01:C5:59:47:49:F9 RSSI: -47
[CHG] Device 01:C5:59:47:49:F9 TxPower: 3
...
规模
当我尝试配对或连接体重秤时，bluetoothctl、hcidump 和 gatttool 的输出如下：
bluetoothctl
Attempting to pair with ED:67:37:60:78:22
Failed to pair: org.bluez.Error.AuthenticationCanceled
hcidump
> HCI Event: Command Complete (0x0e) plen 4
LE Remove Device From White List (0x08|0x0012) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Add Device To White List (0x08|0x0011) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Parameters (0x08|0x000b) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
gatttool
> sudo gatttool -b ED:67:37:60:78:22 -I
[ED:67:37:60:78:22][LE]> connect
Attempting to connect to ED:67:37:60:78:22
Error: connect error: Connection refused (111)
根据我看到的几个线程，我尝试使用 public 和随机地址类型，没有任何变化。 hcidump 似乎没有对 Scale 进行太多操作。
编辑
进一步检查秤，似乎不是 "connectable"。鉴于没有定义的服务或特征，我开始查看 广告 中的“制造数据”。我可以看到随着比例尺的测量值发生变化，部分数据也在发生变化：
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 00 00 4d a2 02 8a 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 d2 00 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 d2 00 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 60 04 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 68 06 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 68 06 4d a2 02 8b 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 ad 07 4d a2 02 8c 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4d 7f 7e 3a 14 00 ad 07 4d a2 02 8c 25
ff ff aa bb ed 67 37 60 78 22 5e 94 d7 4e 7f 7e 3a 14 00 6b 08 4d a2 02 8c 25
现在我只需要确认更新的部分实际上是重量数据——一旦我弄清楚汤里有什么（例如，计量单位、重量等）。
FITBIT
对于Fitbit，输出多了很多，但还是配对失败：
bluetoothctl
pair 01:C5:59:47:49:F9
Attempting to pair with 01:C5:59:47:49:F9
[CHG] Device 01:C5:59:47:49:F9 Connected: yes
[CHG] Device 01:C5:59:47:49:F9 ServicesResolved: yes
[CHG] Device 01:C5:59:47:49:F9 ServicesResolved: no
[CHG] Device 01:C5:59:47:49:F9 Connected: no
Failed to pair: org.bluez.Error.AuthenticationCanceled
hcidump
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Parameters (0x08|0x000b) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Complete (0x0e) plen 4
LE Set Scan Enable (0x08|0x000c) ncmd 1
status 0x00
> HCI Event: Command Status (0x0f) plen 4
LE Create Connection (0x08|0x000d) status 0x00 ncmd 1
> HCI Event: Command Status (0x0f) plen 4
LE Read Remote Used Features (0x08|0x0016) status 0x00 ncmd 1
> HCI Event: Command Complete (0x0e) plen 14
LE Read Remote Used Features (0x08|0x0016) ncmd 1
> HCI Event: Command Status (0x0f) plen 4
Disconnect (0x01|0x0006) status 0x00 ncmd 1
> HCI Event: Disconn Complete (0x05) plen 4
status 0x00 handle 64 reason 0x16
Reason: Connection Terminated by Local Host
gatttool
与 Scale 不同，我可以使用 gatttool 连接到 Fitbit 并检索特征：
[01:C5:59:47:49:F9][LE]> connect
Attempting to connect to 01:C5:59:47:49:F9
Connection successful
[01:C5:59:47:49:F9][LE]> characteristics
handle: 0x0002, char properties: 0x02, char value handle: 0x0003, uuid: 00002a00-0000-1000-8000-00805f9b34fb
handle: 0x0004, char properties: 0x02, char value handle: 0x0005, uuid: 00002a01-0000-1000-8000-00805f9b34fb
handle: 0x0006, char properties: 0x02, char value handle: 0x0007, uuid: 00002a04-0000-1000-8000-00805f9b34fb
handle: 0x0008, char properties: 0x02, char value handle: 0x0009, uuid: 00002aa6-0000-1000-8000-00805f9b34fb
handle: 0x000b, char properties: 0x20, char value handle: 0x000c, uuid: 00002a05-0000-1000-8000-00805f9b34fb
handle: 0x000f, char properties: 0x02, char value handle: 0x0010, uuid: adabfb04-6e7d-4601-bda2-bffaa68956ba
handle: 0x0011, char properties: 0x06, char value handle: 0x0012, uuid: adabfb02-6e7d-4601-bda2-bffaa68956ba
handle: 0x0013, char properties: 0x12, char value handle: 0x0014, uuid: adabfb03-6e7d-4601-bda2-bffaa68956ba
handle: 0x0016, char properties: 0x10, char value handle: 0x0017, uuid: adabfb01-6e7d-4601-bda2-bffaa68956ba
handle: 0x0019, char properties: 0x20, char value handle: 0x001a, uuid: adabfb05-6e7d-4601-bda2-bffaa68956ba
handle: 0x001d, char properties: 0x12, char value handle: 0x001e, uuid: 558dfa01-4fa8-4105-9f02-4eaa93e62980
handle: 0x0021, char properties: 0x02, char value handle: 0x0022, uuid: 00002a29-0000-1000-8000-00805f9b34fb
handle: 0x0023, char properties: 0x02, char value handle: 0x0024, uuid: 00002a24-0000-1000-8000-00805f9b34fb
handle: 0x0025, char properties: 0x02, char value handle: 0x0026, uuid: 00002a25-0000-1000-8000-00805f9b34fb
handle: 0x0027, char properties: 0x02, char value handle: 0x0028, uuid: 00002a27-0000-1000-8000-00805f9b34fb
handle: 0x0029, char properties: 0x02, char value handle: 0x002a, uuid: 00002a26-0000-1000-8000-00805f9b34fb
handle: 0x002b, char properties: 0x02, char value handle: 0x002c, uuid: 00002a28-0000-1000-8000-00805f9b34fb
handle: 0x002d, char properties: 0x02, char value handle: 0x002e, uuid: 00002a23-0000-1000-8000-00805f9b34fb
handle: 0x002f, char properties: 0x02, char value handle: 0x0030, uuid: 00002a2a-0000-1000-8000-00805f9b34fb
handle: 0x0031, char properties: 0x02, char value handle: 0x0032, uuid: 00002a50-0000-1000-8000-00805f9b34fb
附加信息
蓝牙服务状态
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2020-04-09 18:32:27 BST; 24min ago
Docs: man:bluetoothd(8)
Main PID: 5515 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
Memory: 1.1M
CGroup: /system.slice/bluetooth.service
└─5515 /usr/lib/bluetooth/bluetoothd --compat --noplugin=sap -E
Apr 09 18:32:27 archer systemd[1]: Starting Bluetooth service...
Apr 09 18:32:27 archer bluetoothd[5515]: Bluetooth daemon 5.50
Apr 09 18:32:27 archer systemd[1]: Started Bluetooth service.
Apr 09 18:32:27 archer bluetoothd[5515]: Excluding (cli) sap
Apr 09 18:32:27 archer bluetoothd[5515]: Bluetooth management interface 1.14 initialized
dmesg | grep 蓝牙
[ 12.451287] Bluetooth: Core ver 2.22
[ 12.451337] Bluetooth: HCI device and connection manager initialized
[ 12.452111] Bluetooth: HCI socket layer initialized
[ 12.452123] Bluetooth: L2CAP socket layer initialized
[ 12.452151] Bluetooth: SCO socket layer initialized
[ 12.462111] Bluetooth: HCI UART driver ver 2.3
[ 12.462118] Bluetooth: HCI UART protocol H4 registered
[ 12.462172] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 12.462284] Bluetooth: HCI UART protocol Broadcom registered
[ 12.677032] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 12.677038] Bluetooth: BNEP filters: protocol multicast
[ 12.677048] Bluetooth: BNEP socket layer initialized
[ 818.140511] Bluetooth: RFCOMM TTY layer initialized
[ 818.140529] Bluetooth: RFCOMM socket layer initialized
[ 818.140542] Bluetooth: RFCOMM ver 1.11
连接
所有 PI 上的 WiFi 和蓝牙都处于活动状态，我通过 SSH 连接。
关闭
我浏览了来自多个论坛的许多帖子，并进行了各种建议的配置更改（保持 PI 3B+ 干净作为对照）但没有成功。对于下一步的任何建议或指示，我将不胜感激。一定有什么我遗漏的地方——很可能是一些简单的东西让你们中的大多数人大笑起来，就像你们以前从未大笑过一样:)
感谢您花时间阅读这个冗长的问题。
对于 Scale，我终于能够解码重要的值（权重）。有一些我仍然不知道它们是什么，但主要问题已解决。给定以下位置和值：
Position: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Value: ff ff aa bb ed 67 37 60 78 22 5e 97 4a 74 7f 7e 3a 15 00 6a 04 4d a2 02 4a 3d
映射如下：
- 0-3：目前未知。尚未观察到值发生变化
- 4-9：设备地址
- 10-13: Unix 时间戳
- 14-16：目前未知。观察到值会发生变化，但不是很频繁。
- 17：稳定指标。值为 0x15 (21) 表示秤已稳定测量
- 18：目前未知。总是显示为 00
- 19-20：重量！。虽然磅秤显示的重量是磅，但传输值需要除以 100 才能得出公斤，然后可以根据需要转换为其他单位。
- 21-23：目前未知。尚未观察到值发生变化
- 24：目前未知。测量时数值会有所变化，可能与计算BMI等有关
- 25：目前未知。该值有时会在一天中的不同时间点发生变化。似乎与测量本身没有直接关系。
我曾经 - 错误地 - 试图使用 FitBit 来保持理智；但是，很明显，这两种设备履行和提供的角色和服务——以及它们宣传的方式——根本不相似，所以这是一个糟糕的解决方案集:)。
我希望这能帮助任何其他试图从广告中提供数据的体重秤（特别是 Renpho ES-26R）检索数据的人。如果其他人遇到未知位的含义，请随时对信息发表评论。
谢谢！
太好了，感谢您的详细分析。
我这里有一个RENPHO ES-26R-B。字节 24-25 似乎是一个计数器/索引，它会增加直到测量完成，然后多次发送先前的测量（较小的 idx）。
我使用 python 和 bluepy 来阅读和分析消息：
import os
import time
from datetime import datetime
from bluepy.btle import Scanner, DefaultDelegate
g_idx_old = 0
class ScanDelegate(DefaultDelegate):
def __init__(self):
DefaultDelegate.__init__(self)
def handleDiscovery(self, dev, isNewDev, isNewData):
filter_for_renpho_messages(dev)
def filter_for_renpho_messages(dev):
for (adtype, desc, value) in dev.getScanData():
if(desc == 'Manufacturer'): # idx 255
if(len(dev.scanData[255]) == 26):
dev_addr_manufacturer = dev.scanData[255][4:10].hex()
if(dev.addr.replace(':', '') == dev_addr_manufacturer):
# show_all_messages(dev)
show_only_stable_weight(dev)
def show_all_messages(dev, write_to_file=False):
manufacturer_data = dev.scanData[255]
weight_raw = int.from_bytes(manufacturer_data[19:21], "little")
weight_kg = float(weight_raw)/100.0
index_raw = int.from_bytes(manufacturer_data[24:26], "little")
# print the data
print("{} {} {} {:6.2f}kg {:5}".format(
datetime.now().strftime("%H:%M:%S"), dev.addr,
dev.scanData[255].hex(), weight_kg, index_raw))
# write the data to file (binary)
if(write_to_file):
with open("manufacturer_data.bin", "ab") as data_file:
data_file.write(manufacturer_data)
def show_only_stable_weight(dev, write_to_file=True):
global g_idx_old
manufacturer_data = dev.scanData[255]
weight_raw = int.from_bytes(manufacturer_data[19:21], "little")
weight_kg = float(weight_raw)/100.0
idx = int.from_bytes(manufacturer_data[24:26], "little")
# only show weight if the incoming idx is smaller than a prev
if((idx < g_idx_old) and # stable result has smaller idx
((g_idx_old - idx) < 50000)): # ignore overflow
# print the data
print("{} {:6.2f}kg".format(
datetime.now().strftime("%H:%M:%S"), weight_kg))
# write the data to file (CSV)
if(write_to_file):
filename = "weights.csv"
# If file is new, set the header row
if not os.path.isfile(filename):
with open("weights.csv", "a") as csv_file:
csv_file.write("timestamp;datetime;weight;kg\n")
# append current measurement
with open("weights.csv", "a") as data_file:
data_file.write("{};{};{};kg\n".format(
int(time.time()), datetime.now().strftime("%d.%m.%Y %H:%M:%S"), weight_kg))
g_idx_old = idx
def main():
scanner = Scanner().withDelegate(ScanDelegate())
scanner.scan(timeout=None, passive=True)
if __name__ == "__main__":
main()
在函数show_all_messages中可以将数据写入二进制文件，之后可以使用以下代码进行分析：
from datetime import datetime
with open("manufacturer_data.bin", "rb") as dump_file:
data = dump_file.read()
data_len = len(data)
print("Datalen: {}\n".format(data_len))
for i in range(int(data_len / 26)):
cur_data = data[i*26:(i+1)*26]
# strange, timstamp is big endian, but weight and idx are little endian
timestamp_raw = int.from_bytes(cur_data[10:14], "big")
weight_raw = int.from_bytes(cur_data[19:21], "little")
index_raw = int.from_bytes(cur_data[24:26], "little")
weight_kg = float(weight_raw)/100.0
print("{} | {} {} {} {} {} {} {} {} {} | {} {:5} {:5} | {:6.2f}kg".format(
cur_data.hex(),
cur_data[0:4].hex(), # always "ffffaabb"
cur_data[4:10].hex(), # device address "ed67388f9d27"
cur_data[10:14].hex(), # timestamp
cur_data[14:17].hex(), # Unknown "ffffff"
cur_data[17:18].hex(), # Stabilization? "12" or "13"
cur_data[18:19].hex(), # Unknown "a0"
cur_data[19:21].hex(), # weight
cur_data[21:24].hex(), # Unknown "4f2e03"
cur_data[24:26].hex(), # idx / cnt
datetime.fromtimestamp(timestamp_raw).strftime('%Y-%m-%d %H:%M:%S'),
weight_raw,
index_raw,
weight_kg))
这是分析数据的示例：
weight idx weight idx
|||| |||| |||| ||||
ffffaabbed67388f9d27600b5c9cffffff12a0ae1f4f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 ae1f 4f2e03 9e1d | 2021-01-23 00:15:40 8110 7582 | 81.10kg
ffffaabbed67388f9d27600b5c9cffffff12a0ae1f4f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 ae1f 4f2e03 9e1d | 2021-01-23 00:15:40 8110 7582 | 81.10kg
ffffaabbed67388f9d27600b5c9cffffff12a002214f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 0221 4f2e03 9e1d | 2021-01-23 00:15:40 8450 7582 | 84.50kg
ffffaabbed67388f9d27600b5c9cffffff12a002214f2e039e1d | ffffaabb ed67388f9d27 600b5c9c ffffff 12 a0 0221 4f2e03 9e1d | 2021-01-23 00:15:40 8450 7582 | 84.50kg
ffffaabbed67388f9d27600b5c9dffffff12a0e51f4f2e039f1d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 e51f 4f2e03 9f1d | 2021-01-23 00:15:41 8165 7583 | 81.65kg
ffffaabbed67388f9d27600b5c9dffffff12a00d204f2e03a01d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 0d20 4f2e03 a01d | 2021-01-23 00:15:41 8205 7584 | 82.05kg
ffffaabbed67388f9d27600b5c9dffffff12a00d204f2e03a01d | ffffaabb ed67388f9d27 600b5c9d ffffff 12 a0 0d20 4f2e03 a01d | 2021-01-23 00:15:41 8205 7584 | 82.05kg
ffffaabbed67388f9d27600b5c9fffffff12a008204f2e03a31d | ffffaabb ed67388f9d27 600b5c9f ffffff 12 a0 0820 4f2e03 a31d | 2021-01-23 00:15:43 8200 7587 | 82.00kg
ffffaabbed67388f9d27600b5c9fffffff12a008204f2e03a41d | ffffaabb ed67388f9d27 600b5c9f ffffff 12 a0 0820 4f2e03 a41d | 2021-01-23 00:15:43 8200 7588 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a51d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a51d | 2021-01-23 00:15:44 8200 7589 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a61d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a61d | 2021-01-23 00:15:44 8200 7590 | 82.00kg
ffffaabbed67388f9d27600b5ca0ffffff12a008204f2e03a61d | ffffaabb ed67388f9d27 600b5ca0 ffffff 12 a0 0820 4f2e03 a61d | 2021-01-23 00:15:44 8200 7590 | 82.00kg
ffffaabbed67388f9d27600b5ca1ffffff12a008204f2e03a71d | ffffaabb ed67388f9d27 600b5ca1 ffffff 12 a0 0820 4f2e03 a71d | 2021-01-23 00:15:45 8200 7591 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca2ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca2 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:46 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca3ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca3 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:47 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca4ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca4 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:48 8200 7586 | 82.00kg
ffffaabbed67388f9d27600b5ca5ffffff13a008204f2e03a21d | ffffaabb ed67388f9d27 600b5ca5 ffffff 13 a0 0820 4f2e03 a21d | 2021-01-23 00:15:49 8200 7586 | 82.00kg
...
ffffaabbed67388f9d27600b5cb1ffffff13a000004f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 13 a0 0000 4f2e03 be1d | 2021-01-23 00:16:01 0 7614 | 0.00kg
ffffaabbed67388f9d27600b5cb1ffffff12a05d204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 5d20 4f2e03 be1d | 2021-01-23 00:16:01 8285 7614 | 82.85kg
ffffaabbed67388f9d27600b5cb1ffffff12a035204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 3520 4f2e03 be1d | 2021-01-23 00:16:01 8245 7614 | 82.45kg
ffffaabbed67388f9d27600b5cb1ffffff12a035204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 3520 4f2e03 be1d | 2021-01-23 00:16:01 8245 7614 | 82.45kg
ffffaabbed67388f9d27600b5cb1ffffff12a008204f2e03be1d | ffffaabb ed67388f9d27 600b5cb1 ffffff 12 a0 0820 4f2e03 be1d | 2021-01-23 00:16:01 8200 7614 | 82.00kg
ffffaabbed67388f9d27600b5cb2ffffff12a008204f2e03bf1d | ffffaabb ed67388f9d27 600b5cb2 ffffff 12 a0 0820 4f2e03 bf1d | 2021-01-23 00:16:02 8200 7615 | 82.00kg
ffffaabbed67388f9d27600b5cb2ffffff12a008204f2e03c01d | ffffaabb ed67388f9d27 600b5cb2 ffffff 12 a0 0820 4f2e03 c01d | 2021-01-23 00:16:02 8200 7616 | 82.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a0451f4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 451f 4f2e03 c11d | 2021-01-23 00:16:03 8005 7617 | 80.05kg
ffffaabbed67388f9d27600b5cb3ffffff12a0ca1c4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 ca1c 4f2e03 c11d | 2021-01-23 00:16:03 7370 7617 | 73.70kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a0600e4f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 600e 4f2e03 c11d | 2021-01-23 00:16:03 3680 7617 | 36.80kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c11d | 2021-01-23 00:16:03 0 7617 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c11d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c11d | 2021-01-23 00:16:03 0 7617 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c21d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c21d | 2021-01-23 00:16:03 0 7618 | 0.00kg
ffffaabbed67388f9d27600b5cb3ffffff12a000004f2e03c21d | ffffaabb ed67388f9d27 600b5cb3 ffffff 12 a0 0000 4f2e03 c21d | 2021-01-23 00:16:03 0 7618 | 0.00kg
ffffaabbed67388f9d27600b5cb4ffffff12a000004f2e03c31d | ffffaabb ed67388f9d27 600b5cb4 ffffff 12 a0 0000 4f2e03 c31d | 2021-01-23 00:16:04 0 7619 | 0.00kg
ffffaabbed67388f9d27600b5cb4ffffff12a000004f2e03c31d | ffffaabb ed67388f9d27 600b5cb4 ffffff 12 a0 0000 4f2e03 c31d | 2021-01-23 00:16:04 0 7619 | 0.00kg
ffffaabbed67388f9d27600b5cb5ffffff12a06c204f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 6c20 4f2e03 c51d | 2021-01-23 00:16:05 8300 7621 | 83.00kg
ffffaabbed67388f9d27600b5cb5ffffff12a0b41e4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 b41e 4f2e03 c51d | 2021-01-23 00:16:05 7860 7621 | 78.60kg
ffffaabbed67388f9d27600b5cb5ffffff12a0b41e4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 b41e 4f2e03 c51d | 2021-01-23 00:16:05 7860 7621 | 78.60kg
ffffaabbed67388f9d27600b5cb5ffffff12a0ae1f4f2e03c51d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 ae1f 4f2e03 c51d | 2021-01-23 00:16:05 8110 7621 | 81.10kg
ffffaabbed67388f9d27600b5cb5ffffff12a0df204f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 df20 4f2e03 c61d | 2021-01-23 00:16:05 8415 7622 | 84.15kg
ffffaabbed67388f9d27600b5cb5ffffff12a0bd1f4f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 bd1f 4f2e03 c61d | 2021-01-23 00:16:05 8125 7622 | 81.25kg
ffffaabbed67388f9d27600b5cb5ffffff12a0bd1f4f2e03c61d | ffffaabb ed67388f9d27 600b5cb5 ffffff 12 a0 bd1f 4f2e03 c61d | 2021-01-23 00:16:05 8125 7622 | 81.25kg
ffffaabbed67388f9d27600b5cb6ffffff12a0e01f4f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 e01f 4f2e03 c71d | 2021-01-23 00:16:06 8160 7623 | 81.60kg
ffffaabbed67388f9d27600b5cb6ffffff12a0e01f4f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 e01f 4f2e03 c71d | 2021-01-23 00:16:06 8160 7623 | 81.60kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
ffffaabbed67388f9d27600b5cb6ffffff12a008204f2e03c71d | ffffaabb ed67388f9d27 600b5cb6 ffffff 12 a0 0820 4f2e03 c71d | 2021-01-23 00:16:06 8200 7623 | 82.00kg
...