The full text continues from the last time. Three months after I helped the teacher draw an experimental board, the test has passed and the effect is pretty good, but the board lacks a human-machine i
Hey guys, I'm new here and don't have many points, I hope you can help me. I wrote an ARM mmu mapping test program, referring to Wei Dongshan's "Complete Manual for Embedded Linux Application Developm
A word before the beginning: From the end of last year to the beginning of this year, I made a 3D printer with parallel arm structure named: Princess Maradon. I believe many friends should still remem
Today, the IC card gas meter at home stopped working. There are still many numbers. Yesterday, the landlord inserted the IC card and there was gas. Unexpectedly, after she took the IC card away, there
The two instructions MRS R0, PRIMASKCPSID Ishould be accessible only at the privileged level. If used at the user level, BusFault will be generated.However, when I was porting the ucosii operating sys