Grbl 1.1f

[mjhthe1442]

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Please, I need help I have a 32 bit Chinese cnc controller board with a GD32F303CCT6 mcu which by accident I erase the original grbl 1.1f firmware, I flash a new grbl 1.1f firmware to the controller now it is working fine except offline control than before It worked fine, now it doesn't work, it doesn't move the stepper motor, I think the problem is that USART1 serial port is not enabled and is not receiving data, because
I flash the same grbl 1.1f to Arduino uno board and the offline control now is working fine, I don't know if grbl firmwire is only compatible with Atmega328P mcu and not with STM32F103C8T6 mcu.