In the experiment, I used the ams1117 3.3 voltage regulator, and found that the resistance between vcc and gnd was several hundred ohms, and it was bidirectionally conductive. What effect does this ha
This time, we mainly make two kinds of Uboot files, one is the version that can be started from NandFlash, and the other is the version that can be started from the SD card. (Both versions are explain
There is a small 12864 dot matrix LCD on the board, model OCM12864-9 , without font library, you need to use modeling software, commonly used ones are PCTOLCD2002, which is very classic.
The connectio