2025-02-17 15:41:34
In my last post on the Nordic Semiconductor Thingy:91 X IoT prototyping platform, I outlined the features and architecture of the device. The combination of wireless protocols on the Thingy:91 X (Bluetooth LE, LTE-M, Wi-Fi) make it a compelling foundation for a wide variety of applications. However, there are a few intricacies to the protocol support. Namely, the primary stated purpose of the Wi-Fi support is for network-based positioning (i.e. scan for local access points, send them to a server, get approximate location back).
2025-01-30 15:41:34
I have recently been working with the RAKwireless RAK5010 development board. It includes the popular Nordic nRF52840 MCU for running applications on its Cortex-M4 CPU that can leverage the integrated 2.4 GHz multiprotocol support, as well as the LTE and GNSS support offered by the on-board Quectel BG95-M3 module. The micro-USB port on the board is connected to USB on the nRF52840, which allows for viewing serial output, but is not a mechanism for flashing new firmware.
2024-12-31 15:41:34
In our last post, we explored the Nordic VPR RISC-V processor through the lens of the peripheral processor (PPR) on the nRF54H20. While we demonstrated how the application processor can configure and start a VPR processor, we stopped short of demonstrating any further communication between them. Most meaningful use-cases of the PPR and the FLPR, involve communicating with the controlling processor. Nordic uses two different hardware peripherals for inter-processor communication (IPC) on the nRF54H20: VEVIF (VPR Event Interface) and BELLBOARD.
2024-12-24 15:41:34
VPR (pronounced “Viper”) is Nordic Semiconductor’s first RISC-V processor, landing in the new nRF54H and nRF54L lines of SoCs after their initial announcements in April and October of 2023 respectively. Readers of this blog are familiar with my long-running obsession interest in RISC-V (see my RISC-V Tips and RISC-V Bytes series). However, Nordic’s introduction of a RISC-V processor is particularly interesing to me as their lineup of microcontrollers is extremely popular in low power wireless domains, a common use case for Golioth customers.
2024-12-15 15:41:34
Nordic Semiconductor recently made their new IoT prototyping platform, the Thingy:91 X, generally available. The Thingy:91 X is an upgrade to their existing prototyping platform, the Thingy:91, replacing the nRF9160 System-in-Package (SiP) with an nRF9151 SiP, the nRF52840 System-on-Chip (SoC) with an nRF5340 SoC, and adding the nRF7002 integrated circuit (IC). Each of these components enables a different type of connectivity: nRF9151: cellular (LTE-M / NB-IoT), DECT NR+, GNSS nRF5340: Bluetooth LE, 802.
2024-11-24 15:41:34
Well, not this one. But this one is! How? Let’s take a closer look at Bluesky and the AT Protocol that underpins it. Note: I communicated with the Bluesky team prior to the publishing of this post. While the functionality described is not the intended use of the application, it is known behavior and does not constitue a vulnerability disclosure process. My main motivation for reaching out to them was because I like the folks and don’t want to make their lives harder.
