Hi!
While I copy the sdmmc folder to my own project and build it, there comes many similar errors like "error: unknown type name 'sd_card_t'". I have already included the necessary headers in Paths but it somehow cannot be recognized. Here are the screenshots of my project.
By comparing the example to my own project(the left one), I found there's one debugging difference as shown in the screenshots. There's a .o file missing. I have no clue what caused that. Need some help!
Thanks!
Best Regards!


