CCS/CC2640R2F: CC2640R2FRSM

Part Number: CC2640R2F

Tool/software: TI-RTOS

Hello,

We are using CC2640R2FRSM module in our design, software test code base is ble5_simple_peripheral_cc2640r2lp_app, written some test application and configured the advertising interval to 1 sec and we have kept Tx power level to 5dBm. Our device will be running with CR2032 battery.

While testing we have observed the power consumption when power ON is 0.20mA, when the device connect also 0.20mA their is no change in power consumption when conncted or not.

We tried by programming the same software into LAUNCHXL-CC2640R2 Development board and measure the current, here also it is showing 0.20mA when we connect or disconnect. As per the battery calculation if our device runs at this current then it will take few days to drain the battery.

I have the beow queries, please clarify:

1. To increase the range, if i chnage the tx power level by changing the DEFAULT_TX_POWER to 12(5dBM) from 7(0dBM). Their is no change in range covered, please can you guide me how to increse the range?

2. To optimize the power consumtion, what are the changes required in the test code(ble5_simple_peripheral_cc2640r2lp_app) i'm using?

3. Can i connect both the antenna "PCB F antenna" & "external antenna", is this will effect on power consumption? Please find the attached schematic for your reference.3644.Schema BLE controller.PDF

Please reply ASAP.

Thanks.

Hello,

I see you have tagged your post with SaBLE-x-R2 but you mention using CC2640R2FRSM which is 4x4. The SaBLE-x-R2 uses a 5x5.

If you are seeing 200 uA current, it's likely from an IO pin configuration. I suggest going through the Initial Board Bringup section of the BLE SW User Guide.

Best wishes

Hi Chandrashekar,

The RF match you are using is as single ended RF input/output on each RF pin. This means you can only run up to 2 dBm. You cannot run both outputs at the same time.

For current consumption measurements, refer to this application note: www.ti.com/lit/pdf/swra478

Cheers,
Fredrik

Thanks JXS,

We are using CC2640R2FRSM 4x4 only, I configured io which we required only as per schematic.

I request you to verify once the attached files.

Board_Files.rar

Please reply ASAP.

Thanks

Thanks Fredrik,

To achieve good range 100 mt, what are the changes required could you please guide us.

What are the changes required to optimize the power consumption on software and hardware side, please let us know.

Thanks.

You should use the differential RF configuration for best RF performance.

For power consumption refer to the application note I linked to.

Thanks Fredrik,
I have one more doubt about module I'm using CC2640R2FRSM.
Can I achieve good range in this module?

Yes, it has the BLE sensitivity of all BLE devices, and also excellent output power at 5 dBm.

Thanks Fredrik,

I'm using example code base ble5_simple_peripheral_cc2640r2lp_app in my application, is it suitable one for this kind of long range of applications or any other specific code base?

Thanks.

Hello Fedrik,

To achieve good range, in the example project " ble5_simple_peripheral_cc2640r2lp_app " i have added "-DV50_FEATURES=PHY_LR_CFG" in stack library file "build_config.opt". and default Tx Power Index
DEFAULT_TX_POWER to 12. With this i can achieve very less range around 30 to 40 feet.

But i'm not able to observe any changes in the range. Could you please let me know how to achieve good communication range.

I'm testing the eval board with andriod mobile application nRF connect. Please let me know how to achieve the good communication range with mobile application.

Thanks.