<![CDATA[M5Dial can port a or b be used as a second serial port?]]>Just started playing with the M5Dial and have it working using the USB as a serial port in Arduino. Is there a way to configure either Port A or B as a second serial port in Arduino?

]]>https://community.m5stack.com/topic/7534/m5dial-can-port-a-or-b-be-used-as-a-second-serial-portRSS for NodeFri, 13 Mar 2026 05:30:51 GMTWed, 30 Apr 2025 01:46:06 GMT60<![CDATA[Reply to M5Dial can port a or b be used as a second serial port? on Thu, 01 May 2025 00:34:34 GMT]]>@robski I managed to get it to work on Port B, defined the pins in Arduino and used:
Serial1.begin(9600, SERIAL_8N1, rX1, tX1);

Works well.

]]>https://community.m5stack.com/post/29013https://community.m5stack.com/post/29013Thu, 01 May 2025 00:34:34 GMT<![CDATA[Reply to M5Dial can port a or b be used as a second serial port? on Wed, 30 Apr 2025 12:21:33 GMT]]>@Shanks-0 its like with M5Core basic with just one port which pins then can be defined to be uart/I2C/GPIO

]]>https://community.m5stack.com/post/29004https://community.m5stack.com/post/29004Wed, 30 Apr 2025 12:21:33 GMT<![CDATA[Reply to M5Dial can port a or b be used as a second serial port? on Wed, 30 Apr 2025 11:40:03 GMT]]>@robski I don’t think SoftwareSerial library is available for the M5Dial but I will have a look.

]]>https://community.m5stack.com/post/29003https://community.m5stack.com/post/29003Wed, 30 Apr 2025 11:40:03 GMT<![CDATA[Reply to M5Dial can port a or b be used as a second serial port? on Wed, 30 Apr 2025 07:42:05 GMT]]>@Shanks-0
Port B is generally a no as one of the pins is normally input only

]]>https://community.m5stack.com/post/28997https://community.m5stack.com/post/28997Wed, 30 Apr 2025 07:42:05 GMT<![CDATA[Reply to M5Dial can port a or b be used as a second serial port? on Wed, 30 Apr 2025 07:20:28 GMT]]>@Shanks-0 software serial?

]]>https://community.m5stack.com/post/28996https://community.m5stack.com/post/28996Wed, 30 Apr 2025 07:20:28 GMT