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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!weretis.net!feeder8.news.weretis.net!reader5.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Jan Panteltje Newsgroups: sci.electronics.design,comp.sys.raspberry-pi Subject: Re: RP400 40-pin connector Date: Mon, 12 Aug 2024 00:03:52 GMT Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; ISO-8859-15 Content-Transfer-Encoding: 8bit Injection-Date: Mon, 12 Aug 2024 00:03:54 -0000 (UTC) Injection-Info: solani.org; logging-data="1178590"; mail-complaints-to="abuse@news.solani.org" User-Agent: NewsFleX-1.5.7.5 (Linux-5.15.32-v7l+) Cancel-Lock: sha1:FQDgH9zChoNQxsEW7KTVOCuL/G0= X-User-ID: eJwFwYkRwDAIA7CVymNDxuFIvP8IlRA0biXBhCCPyS0EXdlRMBrUT2uI71QfzKFjsA9zc1r5Popdq8vrPyiEFPE= X-Newsreader-location: NewsFleX-1.5.7.5 (c) 'LIGHTSPEED' off line news reader for the Linux platform NewsFleX homepage: http://www.panteltje.nl/panteltje/newsflex/ and ftp download ftp://sunsite.unc.edu/pub/linux/system/news/readers/ Bytes: 2898 Lines: 53 On a sunny day (Sun, 11 Aug 2024 13:59:36 -0700) it happened John Larkin wrote in : >On Sun, 11 Aug 2024 16:22:04 -0400, "Edward Rawde" > wrote: > >>"John Larkin" wrote in message news:d21ibjdvt6odqium3ado62ob1e7sa6n9hc@4ax.com... >>>I want to use an Raspberry Pi 400 (the keyboard thing) as the >>> dev/debug system for an RP2040 based product. >>> >>> https://www.amazon.com/Raspberry-Computer-Keyboard-Layout-Kabel/dp/B08QCQVWH2 >>> >>> It has a 40-pin connector on the back. Various sources say that pins 1 >> >>This connector? >>https://www.pi4j.com/1.3/images/pi4j-rpi-400-pinout.png > >Yes. > >> >>> 3 and 5 are either GPIO ports 8 9 and 7 or maybe 2 3 and 4. >>> >>> Sometimes the pins are labeled WPI and BCM. Wot's that? >>> >>> https://www.amazon.com/Coolwell-Waveshare-Raspberry-Adapter-Expansion/dp/B08RZCR7S8 >> >>If that's just a connector then continuity check it to the above drawing of the connector on the Pi. > >The real question is whether pin 3 is GPIO8 or GPIO2, and which two >pins are the SW debug. > >On the Pi4, pin 3 is GPIO2. GPIO2 and I2C1 sda >It seems like the pins are renamed on the >Pi 400, where pin 3 is GPIO8. Why would they do that? Yes, https://www.pi4j.com/1.4/pins/rpi-400.html But see the warning, also about reconfiguring the serial port for hardware Have not tried it, no 400 here. There were also changes between Pi1 and Pi2 IIRC: https://panteltje.nl/panteltje/newsflex/download.html#freq_pi encountered that... Why? The world is changing...