https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682979/cc2744r7-q1-cc2744r7-q1---api-for-changing-tx-power/6486590Thu, 17 Sep 2026 07:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c9c4b90f-e56c-4371-b7a5-83246f0a61c5Kai KimHello Kevin, Thank you for prompt response Could you please see questions below? 1. Based on the HCI_EXT_SetTxPowerDbmCmd() API guide, the fraction parameter is marked as unused, and looking at the table, it appears that settings can only be made in increments of 1. Should we understand this to mean that only 1 dBm resolution is supported? 2. When HCI_EXT_SetTxPowerDbmCmd() is called with a value that is not present in the power table , how is the actual Tx power configured? Example: When requesting a setting of -10 dBm , the API response returns Success — but what is the actual Tx power set to? Is it -12 dBm or -8 dBm ? Best, Kaihttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682979/cc2744r7-q1-cc2744r7-q1---api-for-changing-tx-power/6486345Thu, 17 Sep 2026 03:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:04fb7108-6ee1-4d39-954e-51fe1f3f6320Kevin QiuHi Kai, 1. 1dBm resolution is supported from 0 to 10 dBm. 0.5dBm resolution is supported from 0 to 8dBm. 2. Yes, it can only support the TX power values listed in Tx Power table Regards, Kevinhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681160/cc2340r5-how-to-calibrate-the-frequency-deviation-of-cc2340r5/6486318Thu, 17 Sep 2026 02:42:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:74482c95-7aef-43a2-9001-c6767ee9e78along shikanghi sir: According to Chapter 6 of the document, I have enabled it HFXT Cap Array Trims， and setting the appropriate values for Cap Array Q1=Q2=0, The frequency deviation test meets the requirements. May I ask if I need to calibrate the frequency deviation for all motherboards, or should I use Cap Array Q1=Q2=0 for all.https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682979/cc2744r7-q1-cc2744r7-q1---api-for-changing-tx-powerThu, 17 Sep 2026 02:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:829e8c22-aa70-4a81-8abb-2ede37bd1891Kai KimPart Number: CC2744R7-Q1 Hi Team, At the request of customer request, we are currently using the API below to adjust TX power during Advertising in order to evaluate connection range and related performance metrics. Could you please confirm the following: The adjustable TX power range available through the API listed below, and whether 1 dBm step resolution is supported. In ti_radio_config.c , a power table is defined as shown below. Could you also confirm whether only the TX power values listed in that table can be configured when using the API above — i.e., whether values outside the table cannot be set? Kindly let me know, if there&#39;s anything unclear Best Regards, Kai KimCC2744R7-Q1https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681044/cc2745p10-q1-error-when-connecting-xds-debugger/6485369Wed, 16 Sep 2026 13:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:92491233-698b-447f-8f27-32e508b41a70Rasikraj DeshmukhHello Haiatullah, Yes, 12V is stepped dwon to 3.3V on the custom board. Regarding pull-ups, only RESET line is not having the pull-up as such but the attached signal trace looks not noisy and is stable. Update: We have pull-ups to all the signals, SWDIO and SWDCK have pull-ups. We see some cyclic trigger of RESET line coming somehow, but what is triggred by XDS debugger (marked in Red circle) should have overridden this cyclic train. Please suggest. Review has been already performed on this partucular design. Regards,https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681044/cc2745p10-q1-error-when-connecting-xds-debugger/6485316Wed, 16 Sep 2026 12:26:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b20fb1ae-4b88-412e-9048-89eb1223b2c9Haiatullah GholamiHi Rasikraj, What is the main supply voltage for the CC2745? Is the 12V stepped down to 3.3V? Do you have any pull-up/pull-down on the reset, SWDIO and SWDCK lines? I recommend you to send your design for an official review. See https://www.ti.com/tool/SIMPLELINK-SUB1GHZ-DESIGN-REVIEWS . Best regards, Haiatullahhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682244/cc2745r10-q1-how-to-configure-mcuboot-swap-mode-for-oad-to-achieve-single-image-with-rollback-capability/6485275Wed, 16 Sep 2026 11:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3aa6c53b-bbe3-43e4-a23e-c22efdbdee09Marvin AdemiHey Weiting, We have two SDK examples that you can take a look at. One showcasing OAD with dual-image and a MCUboot example using Swap upgrade mode with rollback support. For the whole system you are explaining would then be a combination of these two examples: root-directory\examples\rtos\LP_EM_CC2745R10_Q1\ble\basic_ble_oad_dual_image root-directory\examples\nortos\LP_EM_CC2745R10_Q1\mcuboot\mcuboot Upgrade mode from MCUboot: OAD configurations you can find under Device Configurations -&gt; Here is where you configure the flash layout The NVS cofigurations are found under the NVS module in sysconfig. Here you can find all configuration options and choose the ones you need for your use case. As for documentations: 1. Each of the SDK examples has a README.md file. Please read these for a better understanding of the examples and how they are utilized. 2. More details on OAD can be found here: https://dev.ti.com/tirex/explore/node?isTheia=false&amp;node=A__AJ7ZBOBLbJah4w8SPhgdIA__com.ti.SIMPLELINK_LOWPOWER_F3_SDK__58mgN04__LATEST 3. For more information on boot flow please read the TRM of cc2745 under section 9 Device Boot and Bootloader Regards, Marvinhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682237/cc2652p7-ble-tx-power-of-cc2652p7/6485233Wed, 16 Sep 2026 10:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ce7410f9-52ec-498a-bfd7-6ab6ac1a9100RGWHi, If you need the fine 1 dB power steps then recommend to use CC2755P10 or CC2755P20 instead of CC2652P7.https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682237/cc2652p7-ble-tx-power-of-cc2652p7/6485186Wed, 16 Sep 2026 09:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:cad4fe3d-f156-4e0d-9ece-c1fdae4b453aRGWHi, As mentioned in first thread, t he output power of the standard PA is limited to +5 dBm. HPA can be configured as &quot;10 dBm&quot; which supports 6 to 10 dBm power steps via the HPA so we can cover all power steps up to 10 dBm with the &quot;10 dBm&quot; option. When configured as &quot;20 dBm&quot; option, we can support -20 dBm to +5 dBm and from 14 dBm to 20 dBm. 6 to 13 dBm is not supported. Why does the customer need such fine power steps interval between 5 dBm to 13 dBm ?https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682359/cc2745p10-q1-cc2745-unstable-communication/6485177Wed, 16 Sep 2026 09:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:60756fb1-f068-4fc3-9450-379eb14d9944Kevin QiuHi Draven， It seems this is a CAN relevant issue. Which sdk are you using? What is NEM? If my understanding is correct, CAN can not transmit or receive data sometimes. Can you provide more details about CAN data transmission? Regards, Kevinhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682237/cc2652p7-ble-tx-power-of-cc2652p7/6485172Wed, 16 Sep 2026 09:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4466cc1d-1f02-410e-8c45-b830104f1748Lewis ZhangHi , Customer want to know why we can&#39;t set the TX power to 6-13dbm， is it some limitations of PA? thanks! Lewishttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682237/cc2652p7-ble-tx-power-of-cc2652p7/6485164Wed, 16 Sep 2026 09:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:29344d42-899b-46b9-bd3c-acb33339999dRGWHi, The output power of the standard PA is limited to +5 dBm. The HPA port can be configured as a &quot;10 dBm&quot; or &quot;20 dBm&quot;. The HPA output power can be reduced by approx. 5-6 dB from &quot;10 dBm&quot; or &quot;20 dBm&quot; configuration.https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1678658/cc2340r5-q1-nvs-api-processing-time/6485102Wed, 16 Sep 2026 08:53:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b8c1d98f-676c-4829-86f3-a1340ecf532cJonas BrandtHello, Sorry for the late reply. The main reason why your results differ from the ones found in the datasheet is that the datasheet uses measurements on raw/direct flash operations, on a fresh unprogrammed bare-metal (no RTOS) device. Your measurements go through the NVS driver API, which adds processing overhead and logic on top of the raw flash access. For question 2, yes the processing times are different, however it is difficult to pinpoint exactly how much overhead it adds. The reason for this is due to the variance in how much time each operation takes, like you mention in question 3. This comes in part from the logic the NVS API adds, as well as how flash memory works. An erase operation sets bits to 1 (0xFF), and must be done on entire sectors at once (2KB), while a write can only &#39;clear&#39; bits from 1 to 0. Depending on the already existing data in a sector, a single NVS_write may require multiple raw flash operations, for example you may need to read the sector, merge in your new data in SW, erase the full sector, and then write the data back. Hope this clears things up. Kind regards, Jonas Brandthttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681044/cc2745p10-q1-error-when-connecting-xds-debugger/6484963Wed, 16 Sep 2026 06:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0d55358b-d5cf-41b2-b224-634e936ad508Rasikraj DeshmukhHello Haiatullah, 1. Custom board is supplied with external 12V battery supply. [not visible in the snap above] 2. We have two cases here- Board 1: Passes connection test but fails when tried to debug or flash Board 2: Does not pass the connection test as all.https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681044/cc2745p10-q1-error-when-connecting-xds-debugger/6483874Tue, 15 Sep 2026 13:58:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6a3fbe35-6e9b-42b0-a6ce-e9181eaa4ce0Haiatullah GholamiHi Rasikraj, It is good that you were able to open a debug session once before. It means that the connections are correct. 1. I do not see a a power cable in the image above. How is your board powered? Is it powered at 3.3V? 2. I have seen often that these kind of cables causes problems with SWD. Try holding the SWDCK and SWDIO away from each other and try again. Best regards, HGhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1681044/cc2745p10-q1-error-when-connecting-xds-debugger/6483812Tue, 15 Sep 2026 12:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:330fc11f-5c04-4893-a332-b050d49d8ab2Rasikraj DeshmukhHello Haiatullah, PFA some logs and connection details. Signals TMS, TCK, nRESET and GND used from xds board. Please also note, custom hardware could connect successfully once and could enter debug session in CCS once. But after that, we are getting this error. Smart RF Studio, we could NOT see the exact desired device [cc2745P10] there in the tab. e2e.ti.com/.../connection_5F00_log.txt Regards,https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682359/cc2745p10-q1-cc2745-unstable-communicationTue, 15 Sep 2026 10:53:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:812633b4-51a8-4049-8506-8201b15bfb48Draven linPart Number: CC2745P10-Q1 1. Existing logs show that the NEM, BLEC and BLET modules themselves are online , but timeouts or no-response issues occur during the transmission of running packets and diagnostic upgrade data, indicating that the communication link is unstable during transmission . 2. Connect the NEM to the bus, and monitor the bus error frames and the count of error frames. There is a strong correlation between bus error frames and NEM access: the access of NEM may trigger or be accompanied by the generation of bus error frames, and the error frames will disappear after the NEM is unplugged, which further points to the NEM node. 3. Use an oscilloscope to capture NEM waveforms and error frame behaviors. Normal high and low levels as well as rising/falling edges indicate that the transceiver is functioning properly. The error occurs in the data parsing part, and it is initially suspected that there is an abnormality in the CAN controller of NEM. TI needs to jointly troubleshoot the CC2745 Bluetooth chip48V in automotiveCC2745P10-Q1https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1680350/cc2745r10-q1-question-about-rssi-availability-in-ble-channel-sounding-mode-3/6483566Tue, 15 Sep 2026 08:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0707bebb-b653-446f-88c4-a91a001e8a76Mike Wu1Hi, The customer is using the following SDK version: SimpleLink ™ Low Power F3 Software Development Kit Version: 9.20.01.21 Release Date: Jun 30, 2026 Regarding the RSSI requirement, the customer&#39;s objective is not simply to obtain general BLE RSSI values. They are currently evaluating BLE Channel Sounding Mode 3 and would like to correlate the measured Channel Sounding distance with RSSI for performance comparison and analysis. Could you please help clarify the following? Can RSSI be obtained directly from the Channel Sounding procedure (Mode 3)? If &quot;Distance + Raw Results&quot; is enabled, do the Raw Events contain RSSI information that can be parsed by the application? Or is the only supported approach to obtain RSSI through the regular BLE connection events callback (or RSSI monitoring feature) separately from the Channel Sounding procedure? If connection-event RSSI is the recommended solution, can TI comment on how closely those RSSI measurements correlate with the actual Channel Sounding measurements? The customer&#39;s goal is to compare Distance vs. RSSI under the same test conditions, so they would prefer obtaining RSSI associated with the Channel Sounding procedure if available. Thanks for your help. Best Regards, Mike Wuhttps://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682244/cc2745r10-q1-how-to-configure-mcuboot-swap-mode-for-oad-to-achieve-single-image-with-rollback-capabilityTue, 15 Sep 2026 07:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dd56dd81-9af7-47a5-9f06-70a8d7bb62c8Weiting LiaoPart Number: CC2745R10-Q1 Other Parts Discussed in Thread: SYSCONFIG Hi TI support team, I am designing an OAD (Over-the-Air Download) solution for my custom board based on CC2745 . My goal is to implement an A/B dual-image fallback mechanism (Rollback) to prevent the device from bricking if a new image fails. However, to simplify our release and OTA deployment pipeline, I want to maintain only a single application image (Primary-addressed image) instead of maintaining two separate position-dependent images or position-independent code (PIC) for Slot A and Slot B. Based on my understanding, MCUboot&#39;s Swap mode (either Swap-Move or Swap-Scratch) should achieve this. It allows the running application to always execute in the Primary Slot, always write the new image to the Secondary NVS Slot, and leverage MCUboot to swap them and roll back automatically if the new image crashes. I would like to ask for guidance on how to properly configure this in the CC2745 SimpleLink SDK: 1.What are the key configurations required in SysConfig (under MCUboot / OAD / NVS modules) to enable the Swap upgrade mode with Rollback support for CC2745? 2.Are there any official reference examples or app notes for CC2745 that demonstrate MCUboot Swap mode with internal/external flash? Any code snippets or SysConfig guidelines would be highly appreciated. Thank you!SYSCONFIGWireless InfrastructureCC2745R10-Q1https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1682237/cc2652p7-ble-tx-power-of-cc2652p7Tue, 15 Sep 2026 07:27:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2d427823-ca52-4195-abdd-8900ac41c080Lewis ZhangPart Number: CC2652P7 Other Parts Discussed in Thread: CC2755P20 , CC2755P10 Dear Support Team, Customer&#39;s BLE product used CC2652P7, they found some Tx power value can not be set. I have checked the SDK, there are no TX power parameters from 6-13 dbm in the txpowertable as below. Could you help to check it, thanks! LewisCC2652P7CC2755P10CC2755P20