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Why I can't write data to SD card using MFS in different task?

Question asked by botao yang on Nov 25, 2015
Latest reply on Dec 16, 2015 by Daniel Chen

I want to use MFS to write data to SD  card. now I have three task(main_task, init_task, temp_task), the main task is a auto_start task, the init task and temp task are created by the main task. the sd and mfs is inited in init_task, I can create and write data in main_task using mfs, but I can't do this in temp_task. Is there any method to make the mfs work in any task?

I am using MQX 4.1, and the board is my own demo board which is tested to be ok.