Any help would be appreciated. I am using an Arduino Micro. The below code works fine: #include <TMC2209.h> HardwareSerial & serial_stream = Serial1; const long SERIAL_BAUD_RATE = 115200; const int DELAY = 3000; // Instantiate TMC2209 TMC2209 stepper_driver; #define LED 15 #define input_pin 1…

Multiple definition of `__vector_9'

gfvalvo February 3, 2024, 6:23pm 5

It looks like the TMC2209 library #includes the SoftwareSerial library even though you're not using it. SoftwareSerial defines an ISR for that vector.

What are you trying to do with interrupts anyway?

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Multiple definition of `__vector_9'

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