The input is 3.3V TTL high and low level. The Darlington output should be the opposite level of TTL. I checked and it is always in the same state. What's going on?Also, the PMOS at the back end is alw...
The 2407DSP interrupt system is divided into two levels. In the first level, there is a peripheral interrupt request register and a peripheral interrupt response register. The principle of the periphe...
BIPES is an open source project that integrates Google Blockly, WebREPL, MicroPython, documentation, an IOT platform for sending and viewing data, an enhanced web file manager using WebREPL and an onl...
Let's look at the hardware diagram first, and then learn 4×4 keyboard programming together! [img]http://img.photo.163.com/bdWP7cn-vZv3qydIdnZqRQ==/766737836560670912.jpg[/img] Now let's look at the or...
[align=left][size=4]1. The SPI rate cannot exceed 15M, otherwise serious bit errors will occur[/size][/align][align=left][size=4]2. If the receiving mode is interrupt reception, the SPICCR character l...