CC2340R5: BTool setting

Part Number: CC2340R5


Hi TI

How to adjust the transmit time during TX testing using the btool software?

The following links, when DTM mode example 3 only explain the settings DTM mode, but do not mention how to increase transmission time, when continuous Wave do not explain how to enter few sleep status.

https://software-dl.ti.com/simplelink/esd/simplelink_lowpower_f3_sdk/8.10.00.55/exports/docs/ble5stack/ble_user_guide/html/ble-stack-5.x/testing-with-btool-cc23xx.html

 

example 3 waveform, transmit time only 640us, I want the transmission time to be increased to 100ms, with the next piece of data transmitted after a 100ms interval.

scope_1670.png

  • The transmission time of the DTM packets is something that is defined in the BLE specification.

    Specifically, in section 4.1.6 LE Test packet interval, you will find that the transmission interval is strictly defined by a mathematical formula, chosen by the Bluetooth SIG. Since we need to follow the Bluetooth specification in order for the CC2340R5 to be certified, we don't allow to change this value, and it cannot reach 100 ms from my understanding of the specification.

    As for the DTM packet transmission time, this can be modified by changing the length of the payload data. This payload data can range from 0 bytes to 255 bytes. This max value of 255 bytes is also defined by the Bluetooth specification on chapter 4.1.4 LE Test packet PDU, where the length field of the header only has 8 bits, so a maximum value of 255. However, 255 bytes of data will most likely be transmitted under 100 ms I think.

    You can set the payload length by modifying the "TestData" parameter of your call to "HCI_LE_EnhancedTransmitterTest".

  • Hi Vivian,

                     Thanks, I will try the settings you suggested.