Memory controller and method for controlling output of debug messages

A method for controlling output of debug messages, for a data storage device coupled to a host device, wherein the host device issues commands to the data storage device to access the data storage device, the method for controlling output of debug messages is performed by a memory controller of the data storage device when the host device determines that an error has occurred in the data storage device and comprises:

• entering an interrupt service routine in response to an interrupt;
• and
• performing the interrupt service routine,
• wherein step of performing the interrupt service routine further comprises:
• determining whether a predetermined signal has been received by a specific pin of the memory controller;
• and
• outputting a debug message through a transmitting terminal of the UART of the memory controller when determining that the predetermined signal has been received by the specific pin, and
• wherein the method for controlling output of debug messages further comprises:
• setting or switching a triggering source of the interrupt in response to a predetermined command.