How to upgrade Specify FW from SPI flash on nRF52 Series

This blog is to show how to use the SPI bootloader to load the specify firmware from SPI flash for device firmware upgrade. Following up the blog (SPI bootloader), I would continuous to use the nRF52840 DK board and use its onboard qspi flash as SPI flash. For example, there are 3 difference application firmware … Continue reading How to upgrade Specify FW from SPI flash on nRF52 Series

AWTK GUI Demo (Smart Watch) on nRF52840

This blog is to show to the AWTK GUI demo on the Nordic nRF52840 DK board. Sample Slide Screen DemoSmart Watch This demo is done with AWTK ZLG (https://github.com/zlgopen/awtk). Simple GUI Demo https://youtu.be/K9zhBcDBX0Q Smart Watch Demo https://youtu.be/zD-7YdxynLo About AWTK GUI, ZLG has created a powerful, reliable, and easy-to-use open source GUI engine, AWTK. AWTK, called … Continue reading AWTK GUI Demo (Smart Watch) on nRF52840

I2C MEMS Microphone with Nordic nRF52 Series

This blog is described how to connect the MEMS Microphone through I2C to Nordic NRF52 Series chipset. Hardware Requirement: NRF52840 DK Board x 1 Adafruit I2S MEMS Microphonehttps://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/ Adafruit I2S MEMS Microphone Power Pins 3V - this is the power in pin. Technically it can be powered from as low as 1.6V to 3.6V but you'll … Continue reading I2C MEMS Microphone with Nordic nRF52 Series

Low Power RFID Solution Demo on the Nordic nRF52 Series

This blog is to use the ESB for building the RFID demo. On every 2 seconds, the PTX would send 4 times RFID data out. Here is the demo code at the github https://github.com/jimmywong2003/nrf52-esb-rtc-low-power static void send_packet(uint8_t *data_ptr, uint32_t length) { static nrf_esb_payload_t esb_payload; esb_payload.noack = 0; esb_payload.pipe = 0; memcpy(esb_payload.data, data_ptr, length); esb_payload.length = … Continue reading Low Power RFID Solution Demo on the Nordic nRF52 Series

Maximum BLE Throughput with IOS

This blog is to show the BLE throughput on difference users scenarios. I plan to show the maximum throughput on the real world, particular showing how fast the BLE communication with IOS devices. I would use 2 x nRF52840 DK for the central and peripheral bi direction communication and print out the live throughput. After … Continue reading Maximum BLE Throughput with IOS

Radio Timeslot API for the Multiple Protocols

This blog is to describe more details how to use the Radio Timeslot API usage. The Radio Timeslot API was introduced since Nordic Softdevice S110v6.0 or later. It can be used to implement the concurrent multiprotocol with BLE together. All the timeslot API are based on the framework of Nordic Bluetooth Softdevice stack. For example, … Continue reading Radio Timeslot API for the Multiple Protocols

How to configure the number of packets per every BLE connection interval

This blog is to show the method how to configure the number of packets per each connection interval. Basically, it is very similar to the blog (https://jimmywongiot.com/2019/12/15/how-to-set-the-bandwidth-on-ble-link-connection/). I would give more details how to achieve for example 3 packet per connection interval. 3 packets per each connection interval Suppose on the Nordic nRF5 SDK, it … Continue reading How to configure the number of packets per every BLE connection interval

Step by Step to Compile Nordic NRF5 HIDs Keyboard / Mouse Example on nRF Connect SDK

This blog is to describe how to compile and run the nRF5 HIDs Keyboard example from nRF Connect SDK. nRF Connect SDK The nRF Connect SDK is where you begin building low power wireless applications with Nordic Semiconductor nRF52, nRF53, and nRF91 Series devices. The nRF Connect SDK is moved to https://github.com/nrfconnect instead of https://github.com/nordicplayground/nrfconnect. … Continue reading Step by Step to Compile Nordic NRF5 HIDs Keyboard / Mouse Example on nRF Connect SDK

How to work with BLE Codec 1Mbps , 2Mbps and Codec PHY on nRF52 Series

This blog is to introduce the Bluetooth Low Energy with difference codec configuration on Nordic nRF52 SDK. Bluetooth 5.0 had introduced the long range (Codec Phy 125kbps, 500kbps) and high speed 2 Mbps (uncoded PHY). Here are the topics in this blog: Basic introduction on the difference Coded/Uncoded Phy on the Bluetooth 5.0 specificationHow to … Continue reading How to work with BLE Codec 1Mbps , 2Mbps and Codec PHY on nRF52 Series

Swift Pair on the Windows 10

This blog is to describe the Swift Pair on the Windows 10 particular it was introduced version 1803. I would like to collect all the information about this feature and how to enable on the Nordic SDK to support this. Most of the materials are referred to Microsoft documentation as below. https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/bluetooth-swift-pair Swift Pair Introduced … Continue reading Swift Pair on the Windows 10

PDM Microphone on nRF5 Series

This blog is to describe how to add the PDM Microphone on Nordic nRF52 Series. The PDM is started to support on the nRF52832. The pulse density modulation (PDM) module enables input of pulse density modulated signals from external audio frontends, for example, digital microphones. The PDM module generates the PDM clock and supports single-channel … Continue reading PDM Microphone on nRF5 Series

USB Audio Class

This blog is to give some background knowledge on the USB Audio Class. I will try to collect some information from internet about the USB Audio Class 1 and USB Audio Class 2 and then give the description on this blog. Introduction Universal Serial Bus (USB) is a serial bus standard to interface devices. USB … Continue reading USB Audio Class

Enhanced ShockBurst ESB Protocol on nRF52 Series

This blog is to describe more about the proprietary radio protocol on the nRF52 series. On the Nordic nRF5 SDK, it has two difference protocols. Enhanced ShockBurst (ESB)Gazell In this blog, I would mainly focus on the ESB because it provides full source code instead of library. Also, it can do much more flexible to … Continue reading Enhanced ShockBurst ESB Protocol on nRF52 Series

Over the air upgrade through Nordic nrfUtil

This blog is to introduce how to use the nRFUtil for Over The Air upgrade (OTA) in between host and device. I would focus on the BLE OTA only. It uses the nRF52 DK to connect to PC / Linux / MacOS. And then the nRFUtil tool would be the OTA host application. nRFUtil The … Continue reading Over the air upgrade through Nordic nrfUtil