CC1125

Yes.In cont. RX, RSSI graph there is some change in that graph. I have sent some text in text mode (Packet TX) but i cann't able to receive the text in receiver Device Control Panel. what could be the reason?

I want to know how to proceed the text mode?(While one CC1125 in Tx mode and another in Rx mode).

please tell me the procedure.

Why do you set the xosc frequency to 32 MHz? Is this a custom board or TI EM?

Not TI EM Board. I have connected 32 Mhz Crystal to CC1125 that's why I set Xosc to 32MHz.

Have you connected pin 3 and 4 on the CCDebugger to your board? SmartRF Studio uses signals on GPIOs to know when a packet is sent.

Yes. The connection is CCDebugger 3rd Pin to CC1125 GPIO2 (4th pin) and

CCDebugger 4th Pin -- CC1125 GPIO0 (10th pin)

Sorry for all the (random) questions. Do you get a link if you increase the RX filter bandwidth to 25 kHz? Normally the bandwidth is set wide in easy mode to ensure a link even if the two boards have some frequency offset but I noticed that the RX filter BW was reduced when reducing the xtal frequency.

Yes, Exactly Correct. I got the same problem. If I change the Xtal frequency to 32MHz suddenly the RX filter bandwidth is reduced to 12.5 KHz.

Hi,

CC1125 Transmitter module transmitting "Hello" text to another CC1125 Receiver module. In Transmitter Module I set packet interval to 1000ms. In Receiver module I changed the Expected Packet Count to 5 because in transmitter module I gave packet count 5 only.

In Receiver Device Control Panel, Continuous Rx mode there is some change in RSSI Graph. It indicates Some Data is receiving.

But in Packet Rx mode I didn't get any data on that window and No response in 

Average RSSI:  -

Received ok:   0

Received not ok:   0

Packet Error Rate:  -

I don't know what could be the reason?

can u please tell me the solution for this problem?

I have attached the snapshot of Both Tx & Rx Device Control Panel. 

Did you try to increase the RX bandwidth to 25 kHz?

Hi,

Yes I tried but it indicates "Communication Error" Not able to read from device, Checek USB connection in CC1125 Transmitter Device Control Panel.

shall i make any change in register values in Receiver ?

thanks & ragards

vinoth manickam

This is an error message that pops up now and again. Try to restart your boards, restart the USB connection, restart SmartRF Studio and try again. The error message is not related to you trying to adjust the RX BW it's just SmartRF Studio that looses contact with your board momentarily.

Hi,

    I tried but it's not working.

Do you mean tried to increase the RX bandwidth or do you still have communication problem?

Hi,

I tried to increase the RX BW but it's not working.

I made a CC1125 board with 32 MHz crustal (we only had 40 MHz boards) and I had no problem getting link between this and a 40 MHz based CC1125 board, I just adjusted the crystal frequency in Studio for the 32 MHz board.

Have you tried to swap which board is Tx and Rx?