Question: CC1101 433MHz transceiver & Arduino (cloning 2-FSK signal) serial synchronous mode, tr...

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Question: CC1101 433MHz transceiver & Arduino (cloning 2-FSK signal) serial synchronous mode, transmitting more than 61 bytes

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Hi all, I am currently investigating rolling code systems e.g. used in key fobs. I have analysed the signal using an RTL-SDR and inspectrum and it is a 2-FSK@433MHz. I have a CC1101 transceiver which is capable of this modulation and symbol rate (17kHz) and this CC Manager software has been very useful for preliminary testing.

However, the CC1101 is limited to only 61 bytes in the TX FIFO. Anyone have experience with similar transceivers? Specifically on using the serial synchronous mode which should allow for unlimited symbols. According to the developer of the CCManager software, the hardware should be able to handle this, but I'm new to SPI etc.

Thanks in advance

edit: Turns out I only need to transmit 17 bytes, and only 1 of those bytes is rolling code for the key fob. Yay for good security!

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trishmapow2

RTLv3, MSi.SDR, discone

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Posted: 8 years ago
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