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jamesshao8 / portapack-havoc-modified

Custom Firmware for PortaPack (mainly for new APPs). Compatible with H3 and H1(with add-on).
GNU General Public License v2.0
134 stars 18 forks source link

btle scanner #5

Open jamesshao8 opened 4 years ago

jamesshao8 commented 4 years ago

Can show you the mac address of ble devices around you However it's still buggy. I bypassed crc test, only preamble and address is judged, which caused some bits mistaken. If I dont bypass that, no result will be shown. I think it's the radio parameters causing some noise, so that I can never pass crc test.

jamesshao8 commented 4 years ago

WechatIMG272 WechatIMG273 This is the result yesterday. I am comparing portapack with computer running hcitool lescan (that is scanning using bluetooth chip)

Sometimes results are right, sometimes not, like the last 2 lines in photo below WechatIMG274

jamesshao8 commented 4 years ago

I made some improvements today. Like limiting bandwidth to 4MHz. I can actually filter the result with crc now. There will be some results popping out even after crc check. However the results have more mistakes even more than those without crc check. There is a pattern in the mistakes. First 3 bytes are always right, last 3 bytes are always wrong and even more mistaken than the results without crc.

I commented in the code, with or without crc check. If someone is interested can give that a try.

gadjodilo83 commented 4 years ago

very nice work! thanks for sharing this project!