There are no changes on Form, Fit, Function, and Quality of Reliability. Only change in u.FL Connector Appearance. All existing certifications and technical documentations remain valid.
We kindly invite our customers, distributors, and partners to update your records accordingly. For any questions or support regarding this update, feel free to reach out via: sales@raytac.com.
Raytac Corporation 勁達國際電子股份有限公司 / Raytac Corporation (USA) / abietec Inc. A Bluetooth, Wi-Fi, and LoRa Module Maker/ODM & OEM Manufacturer based on Nordic nRF54; nRF53: nRF52; nRF51; nRF7002 Semtech Specification: SX1262
Raytac has advanced the dev kit version of bundle offer – WIFI+BLE: AN7002Q-DB- 5340-M with an on-board flash memory(MX25R64) to create easy evaluation for Wi-Fi project developments.
Table of Content———————————————————————————————————
Hardware Set Up A. Project WITHOUT External Flash MX25R64 needed B. Project WITH External Flash MX25R64 needed
Software Resources & Preparations
Firmware Build & Compile A. Project WITHOUT External Flash MX25R64 needed B. Project WITH External Flash MX25R64 needed
Note: Pease make sure to have both “Nordic nRF5340-DK” and “AN7002Q-DB-5340-M”connected and running during the WIFI+BLE (nRF7002+nRF5340) project development.
Hardware Network: IDC Ribbon Wire(J-Link Cable): Connect nRF5340-DK to AN7002Q-DB-5340-M USB Wire –Type C USB: Power supply to AN7002Q-DB-5340-M through USB TYPE-C USB Wire-Micro USB: Power supply to nRF5340-DK through Micro USB
A. Project WITHOUT External Flash MX25R64 needed – Allocate QSPI for communication between MDBT53 (BLE) and AN7002Q (WIFI) – External flash MX25R64 flash memory is not activated – NO additional resistor swapping needed, keep it as it is on board now. The Resistors on board align with the Nordic board definition (same as nRF7002-DK). – Please closely follow the definition chart printed on back side of board AN7002Q-DB-5340-M. “Component Options Table” > “AN7002Q active with QSPI (Typ)”
– Photo showing the resistor allocation:
– Schematic of the AN7002Q-DB-5340-M(Click on the image to zoom in):
B. Project WITH External Flash MX25R64 needed – Allocate SPI for communication between MDBT53 (BLE) and AN7002Q (WIFI) – Allocate QSPI for XIP: External flash MX25R64 is activated – It is REQUIRED to reallocate resistors to swap the QSPI and SPI on the AN7002Q-DB-5340-M in order to activate the circuit for MX25R64. – Do necessary resistors swapping manually (closely follow the definition chart printed on back side of board AN7002Q-DB-5340-M.) “Component Options Table” > “External flash and AN7002Q active with SPI enable”
– Photo showing the resistor allocation: Detach the resistor -R27 “Component Options Table” > “External flash and AN7002Q active with SPI enable” <<< Necessary resistors swapping manually needed ↓ >>>
– Schematic of the AN7002Q-DB-5340-M(Click on the image to zoom in): Modify the above resistors swapped and necessary component based on the chart: “Component Options Table” > “External flash and AN7002Q active with SPI enable”
!! Important Note:!! The circuit of SW1(p1.08)/SW2(p1.09)/LED1(p1.06) on AN7002Q-DB-5340-M is NOT COMPATIBLE to Nordic WI-FI Control Pin of swctrl1(p1.08)/host_irq(p1.09)/grant(p1.06). In this case, if you’re working with external flash MX25R64 for the WIFI project, Please avoid pin SW1/SW2/LED1 usage while LED2(p1.07) remains available as normal usage. For the design perspective of mother board/carrier board /target board (mounted with AN7002Q & MDBT53 modules), it is required to design the circuit align to SW1(p0.23)/SW2(p0.24)/LED1(p0.28).
Step 1: Prepared with the latest version of nRF Connect for Desktop, using Windows 64-bit – 5.2.0 Step 2: Prepared with the latest version of Command Line Tools, using Windows X86 64 – 10.24.2
**Note: SEGGER J-LINK Upgrade message might pop up while you’re doing above downloads.
Step 3: Locate all the necessary kits for programming in PC
3. Firmware Build & Compile After you download and set up nRFConnect SDK (NCS), you will be able to apply free VS (Visual Studio) Code IDE as firmware programming tool. Here’re the guidelines to developing programs without/with External Flash MX25R64.
A. Project WITHOUT External Flash MX25R64 needed You can directly build/compile on Nordic NCS without any additional configurations/modifications needed.
B. Project WITH External Flash MX25R64 needed – Allocate SPI for communication between MDBT53 (BLE) and AN7002Q (WIFI) – Allocate QSPI for XIP: External flash MX25R64 is activated
The below example uses NCS v3.1.1 and runs the under: C:\ncs
Step 1: Start with a Wi-Fi Scan project and run the program under: C:\ncs\v3.1.1\raytac <<Create a new application and Copy a sample>>
Step 2: Select SDK v3.1.1 to copy the sample
Step 3: Select example by entering keyword: wifi scan(Wi-Fi Scan)
Step 4: Enter application location and name the project as: wifi_scan_uart_dfu
Step 5: Open an existing application and find the registered project: wifi_scan_uart_dfu
★★How to activate the Devicetree setting of Wi-Fi nRF7002 and Create file:nrf5340dk_nrf5340_cpuapp.overlay Code example is as follows: / { chosen { aliases { /delete-node/ leds; /delete-node/ buttons; }; };
Step 7: It is required to do MCUBoot before working with DFU using External Flash Please do the code configuration in sysbuild.conf as following reference code.
SB_CONFIG_BOOTLOADER_MCUBOOT=y # DFU with UART SB_CONFIG_MCUBOOT_MODE_SINGLE_APP=n
# DFU with external flash SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
Step 8: It is required to do MCUMGR before working with DFU over UART Please do the code configuration in prj.conf as following reference code.
# Enable QSPI driver for Application CONFIG_NORDIC_QSPI_NOR=y
# Enable mcumgr DFU in application CONFIG_MCUMGR=y CONFIG_NET_BUF=y CONFIG_ZCBOR=y CONFIG_CRC=y
# Enable mcumgr management for both OS and Images CONFIG_MCUMGR_GRP_OS=y CONFIG_MCUMGR_GRP_IMG=y CONFIG_FLASH=y CONFIG_IMG_MANAGER=y CONFIG_STREAM_FLASH=y CONFIG_FLASH_MAP=y
# Configure MCUMGR transport to UART CONFIG_MCUMGR_TRANSPORT_UART=y CONFIG_BASE64=y
Step 9: Add with MCUBoot setting , and create a root for sysbuild ; Build with file mucboot.overlay & file mcuboot.conf
9A. With mucboot.overlay &mx25r64 { status = “okay"; };
Step 10: Create a VERSION file by referencing the following code when testing DFU over UART. VERSION_MAJOR = 99 VERSION_MINOR = 0 PATCHLEVEL = 0 VERSION_TWEAK = 0 EXTRAVERSION =
Step 14: Generate a Merged.hex file after compiling the program
Step15: You can choose Build/Debug/Flash under ACTIONS during development << Build >>
<< Debug >>
<< Flash >>
Step 16: Go to ACTIONS >> Memory report
Now you can see partitions available in the system. mcu_secondary has already been located in MX25R64 flash memory.
4. Test/Validate DFU Process & WIFI SCAN After the firmware programmed to MDBT53 module on board, we use the USB to UART adaptor board for connection AN7002Q-DB-5340-M through: A. MCUMGR UART to PC and through: B. WiFi Scan UART to PC respectively. Note: We suggest you finish connecting A. and B. before running tests.
Now we can run the tests.
A. DFU over UART – Using AuTerm Program 1. We can locate Image version=V99.0.0 under the current VERSION file
It also indicates Image version: 99.0.0 in MCUmgr-Slot 0.
2. Try to modify the file version from V99 to V100 under VERSION file: VERSION_MAJOR = 100
VERSION_MINOR = 0
PATCHLEVEL = 0
VERSION_TWEAK = 0
EXTRAVERSION =
And go with “Pristine Build”
3. We’re about to run DFU over UART , Please DO NOT do “Flash” or “Erase”.
Proceed with “Force reboot”
4. It’s now Version 100.0.0 in Slot 0 under MCUgr ⭢ DFU over UART successfully done!
Before it was Version 99.0.0 in Slot 1 under MCUgr.
B. WIFI SCAN – PuTTY Console WIFI SCAN credentials can be located under PC Console – PuTTY.
[New Taipei, Taiwan / Los Angeles, USA] We’re thrilled to announce that Raytac Group, including Raytac Corporation(USA) and abietec Inc., will be joining Embedded World North America 2025, in November 4-6 at the Anaheim Convention Center, CA. Come find us at Booth #5067!
This year, we’re bringing lots of exciting news: From Raytac:
Brand-new Nordic nRF54L series modules: AN54LQ and AN54LV(Product Link), built for Bluetooth® LE 6.0 with ultra-low power and strong RF performance.
A full Channel Sounding demo on how precise measurement of multipath and distance can enhance real-time location accuracy, improve signal reliability, and optimize antenna placement.
Introducing you to our Ecosystem, including all our partners and technologies used in various applications.
Discover how our modules can reduce development time and costs, making your projects more efficient.
One-on-one consultations with our experts to help you find the right solutions for your needs.
From abietec:
ODM/OEM design services for everything wireless: Bluetooth®, Wi-Fi, mmWave, LoRa, NB-IoT… You name it!
More importantly, Stop by our booth to explore new products, join fun interactive games, and win prizes!
Let Raytac & abietec be your bridge to product success, connecting great ideas with real-world wireless solutions.
We’re waiting for you at: Hall C – Level 1 Booth 5067
In this article, Stanley Huang, MSc, Deputy Manager of Firmware Development at Raytac, shares insights on how Raytac’s modules and development kits strengthen the Zephyr ecosystem.
[Stanley Huang, New Taipei City] When we talk about open-source platforms like Zephyr RTOS, most people immediately think of major chip manufacturers such as ST Micro, NXP, or Nordic. But to me, what truly makes Zephyr famous amongst the developer community is through modules that developers can actually touch: those they can instantly plug in and start using right away. In these terms, Raytac is one of the most underrated and important contributors in this ecosystem.
Raytac Modules Make Zephyr More Accessible Instead of being a chip vendor, we specialize in producing high-quality, globally certified modules – especially Bluetooth and Wi-Fi modules based on Nordic chipsets, such as the AN7002Q, AN54LQ, AN54LV, MDBT53, MDBT50Q, and MDBT42Q. All these modules are already certified with Regional RF compliances(FCC, IC, CE, KC, etc.) and the latest Bluetooth Specifications, offering developers the assurance of “plug and play” and “production-ready” solutions. We assure that our modules have become one of the easiest platforms for Zephyr developers to test BLE functionality.
I paired Zephyr with Raytac’s MDBT50Q-DB-40 development board when I first applied Zephyr in a BLE Peripheral project . With a simple west build -b nrf52840dk_nrf52840 followed by flashing the firmware using J-Link or nRF Connect for Desktop, the BLE beacon immediately showed up on my phone. Clean, simple, noise-free, and developer-friendly – that’s Raytac’s style.
Modules play an invaluable role in product development Many would say Raytac only makes modules and the real core is still Nordic’s SoC. But I believe that in an open-source system like Zephyr, the hardware that helps your project runs first is that which contributes the most. Our Zephyr-registered development kits eliminate the hassles of manual soldering, regulatory certification, and antenna design, allowing engineers to fully focus on developing applications based on Zephyr. They can run Zephyr’s BLE peripheral, central, GATT, and HCI samples directly on the Raytac kits that act as a one-stop hardware solution. In many ways, Raytac has pushed Zephyr’s usability a significant step forward.
Raytac Also Expands Zephyr’s Application Horizon Many of Raytac’s modules are ultra-compact- ideal for wearables, smart sensors, and low-power beacons…etc. These are the scenarios where Zephyr excels, and Raytac’s modules provide the physical platform to enable companies to build their “dream devices". When running Zephyr on a tiny module like the AN54LV-15(Product Link), developers will be amazed that something smaller than a piece of corn kernel can run a full RTOS, manage the BLE stack, trigger timers, drive I2C sensors, and even connect to the cloud, all by itself. This combination doesn’t just make development easier – it inspires developers to realize that: “they can build their projects using Raytac’s hardware.”
Raytac may not be the star, but we’re always ready for you On Zephyr’s main stage, companies like Nordic, STM, and Intel take the spotlight, but Raytac plays an essential supporting role – supporting the performance from behind the scenes. We offer stable, high quality, and low-power platforms, giving every line of Zephyr code a place to run and every feature a cornerstone. Our greatest value lies in helping developers skip antenna design and RF interference concerns – so they can jump right into the Zephyr ecosystem with ease.
Our products deliver the reliability you need and the efficiency you expect.
[2025.02.19] Raytac Corporation is proud to announce that our application for Wi-Fi Alliance (WFA) certification on the AN7002Q series(based on Nordic’s nRF7002 IC) has been successfully approved. This achievement reinforces our commitment to providing high-quality, reliable, and standard-compliant wireless solutions. By leveraging this certification, our modules ensure seamless interoperability, enhanced security, and superior performance for a wide range of IoT applications.
Advantages of Using Raytac Modules with WFA Certification:
Reliable and Secure Connectivity – Ensures seamless communication with other Wi-Fi-certified devices while meeting industry-leading security standards for stable and secure data transmission. Faster Time-to-Market – Pre-certified modules simplify compliance processes, reducing development time. Global Market Access – Certification helps meet regulatory requirements in multiple regions, expanding business opportunities. Significant Cost-Saving – Compared to the chip-on-board approach, using Raytac’s Wi-Fi module allows direct access to the Derivative programs(please click here for more descriptions), leveraging Raytac’s CID to minimize certification costs and save time-to-market.
To learn more about Wi-Fi certifications and Wi-Fi + BLE applications, feel free to contact us anytime at sales@raytac.com.
Edited by Account Manager: Ms. Mandy Chao
Raytac Corporation 勁達國際電子股份有限公司 A Bluetooth, Wi-Fi, and LoRa Module Maker based on Nordic nRF54; nRF53: nRF52; nRF51; nRF7002 Semtech Specification: SX1262
We are thrilled to announce that Raytac Corporation will be participating in Embedded World 2025 from March 11 to March 13, 2025, at the Nuremberg Exhibition Centre in Germany.
IoT and Wireless technologies such as Bluetooth Low Energy (BLE), Wi-Fi, and LoRa…etc. continue to reshape industries worldwide, that’s why Raytac is at the forefront, providing cutting-edge solutions that accelerate product development. Together with our partner, Nordic Semiconductor, we offer a comprehensive range of modules designed to meet the increasing demands of today’s connected world.
This year, we have exciting innovations to showcase:
Unveiling our new service: Customized OEM/ODM designing for customers.
These are just a few of the groundbreaking solutions we’ll be unveiling. You won’t want to miss the chance to experience these with us!
What to Expect at Our Booth:
Live demonstrations showing how Raytac’s modules can be implemented in multiple industries.
Discover how our modules can reduce development time and costs, making your projects more efficient.
One-on-one consultations with our experts to help you find the right solutions for your needs.
Stop by and visit us at: HALL 3 Booth 3-111 M2M Area
We would love to connect with you and discuss how Raytac can support your next project. Whether you’re an engineer, developer, or business decision-maker, we have something for everyone at Embedded World 2025.
B. Comparison among nRF54L15/ nRF5340/ nRF52840/ nRF52832 SoC modules
If you are familiar with Nordic nRF52, nRF53 module series, you will have better idea to tell the difference heading to NRF54L series by referring to the chart as below. (Click on the picture to zoom in)
C. Get started with nRF54L15 development (NCS 2.8.0)
Preparation of Hardware: 1. 1x Nordic NRF54L15 DK (PCA10156-0.9.1) (Note: If you have PDK (PCA10156-0.8.1) on hand, it can be done in trial phase) 2. 1x Raytac AN54LQ-DB-15 3. 1x IDC Ribbon wire 4. 2x USB-C connector wires (for powering the kit up)
Note: Using Nordic nRF54L15DK / nRF54L15PDK as debugging tool and Raytac Demo board-AN54LQ-DB-15 as simulated carrier board(main board) to proceed the program of nRF54L15 for code compiling and development.
Tips: Please align the red edge of Ribbon at side of 1 in connector J1.
Step 1 —- Connected NRF54L15 DK and AN54LQ-DB-15 by IDC Ribbon wire Step 2 —- Powering on both NRF54L15 DK and AN54LQ-DB-15 by USB-C connector
<< Schematic of AN54LQ-DB-15(Updated on 21-Jan-2025) >>(Click on the picture to zoom in)
Preparation 1. Prepared with the latest version of nRF Connect for Desktop and Select version Windows 64-bit – 5.1.0 2. Prepared with the latest version of nRF Command Line Tools and Select version Windows x86 64-10.24.2 **Note: SEGGER J-LINK Upgrade message might pop up while you’re doing above download.
3. Locate all the necessary kits for programming in PC (Check Software/Application list)
Get started with building your program
Intro: The development tool of nRF Connect SDK(NCS) equipped with free VS (Visual Studio) Code IDE for firmware compile and programming. Note: it is highly recommended to apply NCS 2.8.0 for advanced features of nRF54L15.
Step 1 —- Activate your “nRF Connect for Desktop” >> “Toolchain Manager” >> “Open” >> “Install”
Step 2 —- You will find multiple options of NCS V x.x.x in the tool, we’re using NCS v2.8.0 as example to run sample code of nRF54L15.
Step 3 —- Make sure the NCS v2.8.0 is installed at same directory with compiling system. (the root of Open VS Code) (This is using C:\ncs as example.)
In case to organize the files, do “Select directory’” and “Confirm”.
Step 4 —- After nRF Connect SDK v2.8.0 Download ready , go “Open VS Code”.
Step 5 —- Go “Open Existing Application” , and activate example code: Bluetooth > peripheral_uart
Step 6 —- Moving to program build & compiling by selecting dev kit: nrf54l15dk/nrf54l15/cpuapp
Step 7 —- You will get a .hex file after the above programming compiling process.
Step 8 —- Functions are available for during the code compiling process under “ACTIONS” in VS Code IDE << Build >>
<< Debug >>
<< Flash >>
Firmware Programming It is feasible to do the firmware programming using nRFConnect SDK (NCS) tool. Developer may use “Programmer” to do the firmware flashing with the candidate .hex file.
Step 1 —- Execute nRF Connect for Desktop >> Programmer >> Open
“Select Device”
Select ”nRF54L15 DK”
“Add File”
Step 2 —- Select the candidate .hex file
Select “Erase & Write”
It indicates the programming process is on the way↓
The firmware programming process is done after seeing “Completed” in system Log field.
Step 3 —- Use the mobile App to make sure the Bluetooth broadcasting is functioning after the firmware flashing process is successfully done to the module.
D. Channel Sounding Preview
What is Channel Sounding? —- Advance the “Find My” feature into next level accuracy Have you ever concerned about the distance accuracy when you’re using RSSI to get the distance between devices and to evaluate the transmission distance with legacy Bluetooth module? Nordic NRF54 solution has taken us into next level with Channel Sounding feature that achieves the “centimeter-level” distance accuracy. Early implement achieves 10-20cm in the record.
Credit: Bluetooth Alliance
How does Bluetooth Channel Sounding work? Bluetooth Channel Sounding implemented with Phased-Based Ranging (PBR) & Round-trip time (RTT)(the concept idea of TOF time of flight) algorithm to achieve a higher precision of measuring distance between 2 devices.
Phased-Based Ranging (PBR): Signal has been sent between initiator and reflector with multiple frequency to increase measuring accuracy.
Credit: Bluetooth Alliance
Round-trip time (RTT): It’s the concept of utilizing TOA (Time of arrival). Using TOD(Time of departure) & TOA to measure the timing during the packet transmission between devices.
Credit: Bluetooth Alliance
Potential applications: Personal item finding Secure access control Smart lock system Digital Key Asset Tracking
Currently, the Nordic Wifi module – AN7002Q on Raytac’s AN7002Q-DB-5340 board isn’t loaded with a Wi-Fi MAC address. You can choose to use your own MAC address or request one from Raytac. Below is a complete tutorial for users who would like to purchase MAC addresses themselves.
Note: Raytac provides two free Wi-Fi MAC addresses (2.4GHz & 5GHz bands) for each AN7002Q module. If you have a Raytac AN7002Q-DB-5340 demo board but have not received the Wi-Fi MAC addresses, please contact us at sales@raytac.com.
★ What is a MAC Address?
A MAC address (Media Access Control address) is a unique identifier used to identify network devices. It is typically composed of six groups of two hexadecimal digits, for example, 00:1A:2B:3C:4D:5E. The first six characters are known as the Organizationally Unique Identifier (OUI), which identifies the manufacturer or supplier of the MAC address. Manufacturers can use the OUI to identify the producer of the device.
Each network device’s MAC address should be unique. It is an important identifier used for unique identification among network devices, ensuring that devices can communicate correctly within a local area network. However, it is important to note that MAC addresses can be modified within a local network, so they should not be relied upon as the sole basis for security.
★ How to Obtain a MAC Address?
The application and distribution of MAC addresses are managed by IEEE (Institute of Electrical and Electronics Engineers). Here’s how to apply for a MAC address from IEEE: Currently, MAC addresses can only be purchased directly from the IEEE Standards Association in the United States. Depending on the quantity, they can be categorized as:
MA-L (approximately 16 million addresses) MA-M (approximately 1 million addresses) MA-S (4096 addresses)
2. Log in and go to the MAC Address Purchase Page After logging in, navigate to the MAC address purchase page:IEEE MAC Address Purchase
3. Select the number of MAC Addresses to purchase.
4. Fill in your purchase information by providing the required details.
5. Confirm confidentiality Confirm whether the MAC address purchase is confidential. If you are purchasing publicly registered MA-L, select “No" for this option.
6. Choose payment method IEEE accepts several payment methods, including mailing a U.S. bank draft, wire transfer in U.S. dollars, and online credit card payment.
7. Receive your OUI Within 7 working days, IEEE will send an email to the registered email address containing the purchased OUI.
After obtaining the OUI, you can retrieve all the purchased MAC addresses using code and then import them into a database or Excel for management.
Edited by Sales Manager: Ms. Vicky Huang
Raytac Corporation 勁達國際電子股份有限公司 A Bluetooth, Wi-Fi, and LoRa Module Maker based on Nordic nRF54; nRF53: nRF52; nRF51; nRF7002 Semtech Specification: SX1262
Recently we have received the FAQ: how to write MAC address into the OTP memory of Raytac’s AN7002Q-P Nordic Wi-Fi module? In this article, we’ll get this question explained to give customers a more smooth experience using the AN7002Q-nRF5340 Demo Board(AN7002Q-DB-5340).
Is there an existing Wi-Fi MAC address in the AN7002Q part on the DevKit?
Currently, the AN7002Q module on Raytac’s AN7002Q-DB-5340 board has no Wi-Fi MAC address.
When running Wi-Fi Scan code/Station code/Shell code…etc. on NCS v2.6.0 (and later versions), the AN7002Q module must have a programed Wi-Fi MAC address to function properly.
Therefore, it’s necessary to follow the below process: 1. Program the original Wi-Fi radio test code (..\nrf\samples\wifi\radio_test) into the MDBT53 section, 2. Then write the Wi-Fi MAC address in to the AN7002Q section(nRF7002 IC) via command.
After this, program the original Wi-Fi Scan code/Station code /Shell code … into the 5340, and it will function properly.
**Raytac will assign 2 Wi-Fi MAC addresses(for both 2.4GHz & 5GHz) to every AN7002Q module. *If customers don’t have Wi-Fi MAC addresses for DevKit development yet, please reach out to service@raytac.com
Scenario: Following error occurred when building the SCAN example code, flash it onto the AN7002Q-DB-5340 board, and run the test.
Solution:
When running Wi-Fi scan code on NCS v.2.6.0 or later version, the OTP memory in the AN7002Q module must have a Wi-Fi MAC address programmed in for the Wi-Fi scan functionality to work properly.
(Note: OTP is a One-Time programmable memory, which means the value can only be written once. The customer must aware of this before performing the OTP operation.)
1. Program the original Wi-Fi radio test code (..\nrf\samples\wifi\radio_test) into the MDBT53 section, then manually input and execute the following OTP read command.
wifi_radio_ficr_prog otp_read_params
If you see both MAC0 and MAC1 display a value of 0xFF, as shown in above, it means that you haven’t written the Wi-Fi MAC address into the AN7002Q’s OTP.
2. Manually issue the OTP write command to write the Wi-Fi MAC address into the OTP.
After you complete the above, use the OTP read command in below to check if the Wi-Fi MAC address value was written. The MAC0 and MAC1 should display the value you’ve input from the OTP write command.
wifi_radio_ficr_prog otp_read_params
3. Program the original Wi-Fi SCAN code back into the MDBT53, the Wi-Fi scan functionality should work properly.
Raytac Corporation 