The Raspberry Pi 4’s new USB-C charging doesn’t work with some USB-C chargers - taylordese1988
The Raspberry Pi 4 launched in recently June and as was common, IT's a stellar upgrade over the prior model, packing Thomas More RAM, enough graphics horsepower to labor a span of 4K displays, and USB-C charging instead of micro-USB. But in that location's a trouble: The USB-C charging doesn't work with some USB-C chargers.
Compatibility woes are nothing spick-and-span with USB-C, just in this case, the problem lies with the Pi. Atomic number 3 first off described by Tyler Ward, the Raspberry Pi 4 uses "incorrect detection circuitry on the Pi end of the USB connection." The $35 micro-Microcomputer shares a single resistor for 2 of the USB-C port's pins, while the official USB-C spec calls for each pin to beat a resistor of its possess. This non-compliant design breaks functionality with more strong "e-marked" cables, such as the USB-C chargers that ship with Apple's MacBooks and some Windows 10 laptops.
The Raspberry Pi 4 detects e-marked cables as an audio frequency adapter accessory rather than a battery charger and refuses to use them to power dormy the board. USB-C issues aren't an unheard-of problem, as the Nintendo Switch too packs a non-acceptable USB-C port that won't bring on with all cables, and early phones and laptops equipped with USB-C charging could be fried by rogue cables.
Raspberry Pi Google direct Ben Leung, a USB-C expert-slash-vigilante known for career outgoing poor implementations, has weighed in the issue:
"Instead of stressful to come in with some clever circuit, hardware designers should simplycopy the figure from the USB-C Spec exactly. The Figure 4–9 I posted supra isn't simply a rough rule of thumb of one way of making a USB-C receptacle. It's actually criterion , significance mandatory, required by the spec in order to call your system a compliant USB-C power sink. Just copy IT."
Leung likewise says the Raspberry Pi squad should've tested e-marked cables before cargo ships the plug-in, as MacBook chargers aren't exactly a rarity. "Raspberry Pi, you can do better," he pleaded. "I urge you to correct your excogitation equally soon Eastern Samoa you can so you can be USB-C compliant."
Bronx cheer Pi Foundation The official Raspberry Pi USB-C charger should work satisfactory.
Fortunately, it sounds like that correction is already in the kit and boodle. Pi Colorado-creator Eben Upton told Tech Republic that atomic number 2 expects "this will be secure in a future board revision," and a Pi spokesperson confirmed to Ars Technica that a board revision with a compliant USB-C charging port should roll out in the "next few months."
If you've already bought a Razzing Pi 4, you can work around the charging take by not using an e-marked cable. Options include using a USB-C speech sound battery charger, or picking up the official Raspberry Protease inhibitor USB-C power cater for $8. Information technology's a shame that such a great piece of kit is suffering from such an easily avoided issue, only this isn't the end of the world.
Source: https://www.pcworld.com/article/397742/raspberry-pi-4-usb-c-charging-wonky.html
Posted by: taylordese1988.blogspot.com
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