CC1101-CC1190EM869RD: CC1101EM - 433mhz package receiver

Anthony Tran

Part Number: CC1101-CC1190EM869RD
Other Parts Discussed in Thread: CC1101

Tool/software:

I have been trying to get a package from the RF Link Transmitter - 434MHz - WRL-10534, an RF remote, and a Screw on TPMS sensor. So far I am not able to receive any packages from any of these devices I know it modulation format and the base frequency of the devices from using the RTL_433 and a SDR dongle, and I know that the board is receiving signals from the devices by looking at the Continuous RX Mode in Smart RF Studios but I am not able to receive the packaged data. Is there a software that I can use to locate the Baud rate or Channel spacing for any of these devices? I tried using packet sniffer but haven't been able to get any data.

2 months ago

0 Diego P 2 months ago

TI__Expert 3630 points

Hi,

What modulation is the device using? Is it transmitting at exactly 434 MHz? Do you know the preamble and sync word being transmitted?

0 TheGhostOf 2 months ago in reply to Diego P

Mastermind 6130 points

For TMPS: See an an example e2e.ti.com/.../cc1101-receiving-tpms-data-packets-from-atmel-ata5754-and-or-nxp-freescale-fxth871xd

0 Anthony Tran 2 months ago in reply to Diego P

Prodigy 70 points

For the RF Remote it's ASK-OOK Modulated and it is at 433.92 MHz / (the information is on the back of the remote) no preamble or sync word
I was able to pick up the signal and transmit it using and Arduino board and this code
https://www.instructables.com/Decoding-and-sending-433MHz-RF-codes-with-Arduino-/

But still not able to pick up any signal from the CC1101

For The Screw on TPMS It is 433.875 - 434 MHz but centered at 433.925 MHz it is in FSK modulation from What I got from the RTL_433 with a preamble of 0x55555's and a sync word of 0xdd33 The code for the RTL_433 is here
https://github.com/merbanan/rtl_433/blob/master/src/devices/tpms_jansite_solar.c
I also found some settings to input into the Register View found here
https://www.hackster.io/jsmsolns/arduino-tpms-tyre-pressure-display-b6e544#cad
But was still not able to find any packages

At this point I feel like my CC1101L Module might be broken as I can see the Spikes in Continuous RX but not receive anything from Packet RX

Sub-1 GHz

Sub-1 GHz forum

CC1101-CC1190EM869RD: CC1101EM - 433mhz package receiver