I have an evc project, which was compiled and linked before. Now I changed the SDK, and then it reported the error of unresolved external symbol _X509_LOOKUP_ctrl referenced in function in function "i
I recently transplanted uclinux to my home laptop. At work, I use H-JTAG to burn bin files to the off-chip Nor Flash. It is very convenient to use HJTAG's HFlasher tool directly. I use the HJTAG wingg
As shown in the figure, this is a function program that sets the PWM wave frequency and duty cycle.
The parameter fr in the function represents the PWM frequency to be set, and dc represents the duty
Si522 is one of many 13.56MHz chips, mainly used for card swiping. It has been recognized by many users. Its main feature is low power consumption. It is a popular chip in the field of smart locks. Co
The hardware circuit design of a single-chip microcomputer application system includes two parts: one is system expansion, that is, when the functional units inside the single-chip microcomputer, such