问题描述
我一直在用 RFCat 在 SDR 项目上工作。简而言之,我正在对 sub GHz 无线电协议进行逆向工程。我已经弄清楚了协议,并且能够使用 RFat 欺骗从我的 Yardstick One 传输的接收器,使用在另一个 SDR 上嗅探的数据包(我知道 YS1 在技术上不是 SDR)并使用 Inspectrum 解码。但是,当我使用真正的遥控器或另一个 SDR 发射器发送相同的数据包时,我无法使用 RCat 中的 YS1 嗅探它们,使用与我曾经成功传输的设置相同的设置。接收是否可能需要不同的设置? (除了进入RX模式)这里是d.prinTradioConfig()的打印输出:
== Hardware ==
Dongle: YARDSTICKONE
Firmware rev: 0616
Compiler: SDCCv350
Bootloader: CC-Bootloader
== Software ==
rflib rev: 616
== Frequency Configuration ==
Frequency: 916999877.929688 hz (0x263555)
Channel: 0
Intermediate freq: 281250 hz
Frequency Offset: 0 +/-
Est. Freq Offset: 0
== Modem Configuration ==
Modulation: 2FSK
drate: 151977.539062 hz
ChanBW: 93750.000000 hz
DEVIATION: 234375.000000 hz
Sync Mode: 16 of 16 bits must match
Min TX Preamble: 3 bytes
Chan Spacing: 199951.171875 hz
BSLimit: No data rate offset compensation performed
DC Filter: enabled
Manchester Encoding: disabled
Fwd Err Correct: disabled
== Packet Configuration ==
Sync Word: 0x8585
Packet Length: 11
Length Config: Fixed Packet Mode
Configured Address: 0x0
Preamble Quality Threshold: 4 * 2
Append Status: No
Rcvd Packet Check: No address check
Data Whitening: off
Packet Format: normal mode
CRC: disabled
== AES Crypto Configuration ==
AES Mode: CBC - Cipher Block Chaining
Crypt RF Input: off
Crypt RF Output: off
== Radio Test Signal Configuration ==
TEST2: 0x88
TEST1: 0x31
TEST0: 0x9
VCO_SEL_CAL_EN: 0x0
== Radio State ==
marcSTATE: marc_STATE_IDLE (1)
DONGLE RESPONDING: mode :d,last error# 0
== Client State ==
========================================================================================================================
client thread cycles: 105/55
client errored cycles: 0
recv_queue: (0 bytes) ''
trash: (3 blobs) "[128,142,(1619706506.761202,'')]"
recv_mBox (2 keys) "['0x42','0xff']"
app 0x42 (2 records)
[0x2] (0 frames) "[]"
[0x7] (0 frames) "[]"
app 0xff (6 records)
[0x80] (0 frames) "[]"
[0x81] (0 frames) "[]"
[0x82] (0 frames) "[]"
[0x86] (0 frames) "[]"
[0x88] (0 frames) "[]"
[0x89] (0 frames) "[]"
(PS 如果这个问题有什么不当之处,请见谅,长期访问者,第一次发帖)
解决方法
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