There are two EDITs, each with an [OK] button. Enter a word in the first EDIT and press the OK button behind it, and the timer will start. If you cannot enter the correct letter in the second EDIT wit...
When I was writing code for STM32F051, I used the operation __attribute__((at(0x800F800))) to locate the data at the specified address. However, only one BIN file was generated. I found that all the u...
I have a development board hyper255B based on Xscale processor pxa255. By looking at the schematic diagram, I found the following: 1. There is a 38 decoder (74LCX138), and the three input terminals of...