<![CDATA[Core2 PortC not working]]>I tried GPSRaw.ino on Core2 but get no response from GPS Unit.
Is there a special initialization required?

]]>https://community.m5stack.com/topic/2771/core2-portc-not-workingRSS for NodeThu, 30 Apr 2026 03:11:32 GMTMon, 18 Jan 2021 11:42:52 GMT60<![CDATA[Reply to Core2 PortC not working on Mon, 18 Jan 2021 16:38:39 GMT]]>Hello @ckuehnel

glad to hear and thanks for letting me know.

Thanks
Felix

]]>https://community.m5stack.com/post/11833https://community.m5stack.com/post/11833Mon, 18 Jan 2021 16:38:39 GMT<![CDATA[Reply to Core2 PortC not working on Mon, 18 Jan 2021 14:05:45 GMT]]>@felmue said in Core2 PortC not working:

GPSRaw.begin(9600, SERIAL_8N1, 13, 14);// GPS init

Hi @felmue

Thanks a lot. It works. I small hint in the documentation would be nice.

Ciao Claus

]]>https://community.m5stack.com/post/11830https://community.m5stack.com/post/11830Mon, 18 Jan 2021 14:05:45 GMT<![CDATA[Reply to Core2 PortC not working on Mon, 18 Jan 2021 12:18:24 GMT]]>Hello @ckuehnel

most modules, units and their associated examples have been developed before M5Core2 was available and therefore often do not just work out of the box. It is a pity that the M5Stack engineers do not (can not) spare more time to adapt / fix the existing examples from M5Stack to M5Core2.

That said, in your case the second serial port used for the GPS by default uses GPIO16 and GPIO17 (which on the M5Core2 are being used for the built in PSRAM). Therefore in the M5Core2 the second serial interface, available on PortC, has been changed to use GPIO13 and GPIO14.

Try changing the following line in the example code from:

GPSRaw.begin(9600);// GPS init

to

GPSRaw.begin(9600, SERIAL_8N1, 13, 14);// GPS init

Hope that helps.

Cheers
Felix

]]>https://community.m5stack.com/post/11826https://community.m5stack.com/post/11826Mon, 18 Jan 2021 12:18:24 GMT