Daniel Mangum

**RISC-V Bytes: Exploring a Custom ESP32 Bootloader** I’ve been having a ton of fun with the @EspressifSystem ESP32-C3. The @risc_v Bytes series is back with an exploration of the boot process and a walk through of loading your own custom bootloader. danielmangum.com/posts/risc-v-b…

Our favorite articles & learnings from March by @saminiir, @timoreilly, @trufflesec, @vpetersson, @bitshiftmask, @hasheddan, @EspressifSystem, @EbenUpton, @Raspberry_Pi, @dmitrygr, @kicad_pcb, @ZephyrIoT, @TXInstruments, @verge, @arstechnica, and more! Read the full roundup on our developer blog, Interrupt: interrupt.memfault.com/blog/march-202… #developer #firmware #hardware #iot

🎧 Can AI and open source hardware coexist? On ep. 8 of Open Source Ready, Daniel Mangum (@hasheddan) of @GoliothOfficial shares his take on where technology is headed. Tune in to @opensourceready! 🎙️hubs.ly/Q036bTmw0

@muvaff a couple of things here: 1. This specific report was somewhat mischaracterized (context: darkmentor.com/blog/esp32_non…) 2. In general, it is hard to prove that hardware doesn't have some hidden functionality 3. Bunnie Huang has done some good work in this area: bunniestudios.com/blog/2019/can-…

@hasheddan doubt it, but is this possibility possible to verify?

that’s something I’ve been thinking for a while without open hardware how can we trust any modem to not look for a magic packet to open up the network?

🎙️ Open source isn't just for software! On episode 8 of @opensourceready, Daniel Mangum (@hasheddan) of @GoliothOfficial explains how RISC-V and open hardware are changing the game. Listen now! 🎧 hubs.ly/Q036bSlD0

🚀 What’s next for open source? Daniel Mangum (@hasheddan) of @GoliothOfficial joins @bdougieYO and @johncodes on ep. 8 of @opensourceready to discuss the intersection of software and hardware, AI’s impact, and the future of decentralization. 🎙️ hubs.ly/Q036bRhW0

You can read the full post here: danielmangum.com/posts/nrf9151-…

**Just Barely Fitting a Full Wi-Fi Stack on the nRF9151** New post in which I walk through narrowly fitting wpa_supplicant and the @NordicTweets Wi-Fi driver into the nRF9151's limited RAM and flash, allowing it to control the nRF7002 on the Thingy:91 X.

Read the full post here: blog.golioth.io/golioth-can-no…

New post announcing support for offloading @GoliothOfficial to run on @Qualcomm modem application processors! This frees up resources on external MCUs and creates the opportunity for drop-in modules that add a seamless and consistent connectivity interface for any device.

let’s build something great this week!

You can read the full post here: danielmangum.com/posts/modem-us…

**Accessing the Qualcomm Modem over USB on the RAK5010** A short post on some recent rework I did on the @RAKwireless RAK5010 development board to access serial ports on the @Quectel_IoT BG95's @Qualcomm 9205 modem via USB.

@christianposta Doesn’t prevent all updates, but we use maintenance exclusions to help guard against this when we have specific deployments that rely on some capability of the cluster itself (e.g. control plane access). #exclusions" target="_blank" rel="nofollow noopener">cloud.google.com/kubernetes-eng…

Love it when google cloud decides to run updates to my GKE clusters right when i most need them. Yeah, help yourself google, take your time. Do this at your leisure.

This week at @GoliothOfficial I have: - Done PCB rework - Written embedded firmware - Written network and backend cloud services - Implemented new platform observability tooling - Moved some manual provisioning of infra into IaC It's a great time to join a full stack startup!

**VPR: Arm and RISC-V Inter-Processor Communication** In my final blog post of 2024, I explore inter-processor communication between the @Arm Cortex-M33 and @risc_v VPR cores on the @NordicTweets nRF54H20 using the @ZephyrIoT IPC service.

You can read the full post here: danielmangum.com/posts/vpr-arm-…

Read the full post here: danielmangum.com/posts/vpr-nord…

**VPR: Nordic's First RISC-V Processor** I wrote about VPR ("viper"), the new @risc_v processor that is beginning to show up in @NordicTweets SoCs. We explore how to build @ZephyrIoT applications that target it, and how the app processor configures and starts it.

let's build something great this week!