Segger’s Awkward USB-C Issue With the J-Link Compact DebuggerTheoretically USB-C is a pretty nifty connector, but the reality is that it mostly provides many exciting new ways to make your device not work as expected.
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Segger’s Awkward USB-C Issue With the J-Link Compact Debugger
Theoretically USB-C is a pretty nifty connector, but the reality is that it mostly provides many exciting new ways to make your device not work as expected. With the gory details covered by [Alvaro], the latest to join the party is Segger, with its J-Link BASE Compact MCU debugger displaying the same behavior which we saw back when the Raspberry Pi 4 was released in 2019. Back then so-called e-marked USB-C cables failed to power the SBC, much like how this particular J-Link unit refuses to power up when connected using one of those special USB-C cables.
We covered the issue in great detail back then, discussing how the CC1 and CC1 connections need to be wired up correctly with appropriate resistors in order for the USB-C supply – like a host PC – to provide power to the device. As [Alvaro] discovered through some investigation, this unit made basically the same mistake as the RPi 4B SBC before the corrected design. This involves wiring CC1 and CC2 together and as a result seeing the same <1 kOhm resistance on the active CC line, meaning that to the host device you just hooked up a USB-C audio dongle, which obviously shouldn’t be supplied with power.
Although it’s not easy to tell when this particular J-Link device was produced, the PCB notes its revision as v12.1, so presumably it’s not the first rodeo for this general design, and the product page already shows a different label than for the device that [Alvaro] has. It’s possible that it originally was sloppily converted from a previous micro-USB-powered design where CC lines do not exist and things Just Work, but it’s still a pretty major oversight from what should be a reputable brand selling a device that costs €400 + VAT, rather than a reputable brand selling a <$100 SBC.
For any in the audience who have one of these USB-C-powered debuggers, does yours work with e-marked cables, and what is the revision and/or purchase date?
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@tfb it was! And I was so surprised!
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Dopo 16 anni passati con noi la mia piccola Margot questa sera ha passato il Ponte dell'Arcobaleno.
Ciao piccola pazza, grazie di tutto il tempo passato assieme.
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Zapp: There's only one surefire way back into a woman's heart and
parts beyond. I speak, of course, of Karaoke.
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@DarioZanette ah per quello, MAMiL come se piovesse, tra l'altro odiati da pedoni ed altri ciclisti urbani tanto quanto dagli automobilisti.
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GIORNATA DI ARTIVISMO
Domenica 22 marzo, dalle 14:30 alle 23:00, presso LOCK - Laboratorio Occupato Kasciavìt, Via San Faustino 62, Milano
UNA GIORNATA DI ARTIVISMO
🗓️ (questa) Domenica 22 marzo dalle 14:30 alle 23
📍@collettivo_kasciavit - Via S. Faustino 62 - in occasione del Mercato Lockale
Dove siamo? Come stiamo? Cosa desideriamo?
Come rete di Artivismo ci siamo posti queste e altre domande per creare insieme una giornata dedicata all’Arte resistente dove condividere pratiche e parlare di espressione, dissenso creativo, utopie e immaginazione.
Nel corso del pomeriggio, fino a tarda sera, si alterneranno reti, collettivi e artistə che abitano le arti con valenza politica: dalla fotografia al fumetto, dal rap all’electropunk, dal teatro alla poesia.
✨ Con Andrea Bellaroto · Apollineo · ArT* Festival · Casa per la Pace · Freevan · Hurricane Ivan · Inmotulus · Kamera Lab · Mattia L. · Nebüla · No Kings Milano · RAVE OVER · Rete No CPR · Rocks Against Fascism · Scate · Tempi DiVersi · Timidoceleste · Una Finestra Sbagliata
🍽️ Fermati a cena! Troverai un apertivo/cena vegan per smangiucchiare tutto il pomeriggio, a sostegno delle spese dellə artistə e dei collettivi presenti.
Ti aspettiamo!
🎨 @grafica_x e @ele_vi
#musica #mercatino #laboratorio #interventi #intersezionalità #fotografia #MusicaLive #Poesia #Teatro #banchetti
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@crc i can't find description of Pali on your site.
nevermind, this language is pretty straightforward. i would read sequences of insructions like "lisuli" and interpret them as phrases.
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@RnDanger @tess that's a good idea, «How much care goes into avoiding strain on the affected part.» as a gauge of the pain (at least where possible, so not for teeth abscesses, probably, but now that you make me think about it it's probably why I decided to go get an Xray of the wrist when I fell down skating).
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I have the following set in my .kshrc to do exactly that.
# coloured man pages
man() {
sh -c "man '$@' | col -bx | bat -l man"
}
