The microcontroller has a built-in ADC and an external REF input pin. If the microcontroller is powered off, but the external REF device continues to supply power and there is still a signal at the an...
Recently, when debugging OBD, I found that I could only receive the first frame when sending or receiving multi-frame data (multi-frame reception is in accordance with ISO-15765 single-frame multi-fra...
GPIO is usually used for ordinary input and output, such as buttons, LEDs, or chip select segments, which are considered the most basic operations. Without further ado, let's just post the code + comm...