调试时总是会遇到各种各样的接口，各种各样的转换板，似懂非懂的感觉很不爽! 首先，串口、UART口、COM口、USB口是指的物理接口形式(硬件)。而TTL、RS-232、RS-485是指的电平标准(电信号)。 串口：串口是一个泛称，UART，TTL，RS232，RS485都遵循类似的通信时序协议 ...

在上一篇《嵌入式硬件通信接口协议－UART（一）协议基础》中，简单而细致描述了UART的各个配置项以及通信过程的信号时序，此篇将继续介绍UART接口在不一样的电气特性下，所使用的一些接口规范。 实际上UART只是对信号时序进行定义，而未定义其电气特性。

Pity the poor TTL computer aficionado. It’s an obsession, really — using discrete logic chips to scratch-build a computer that would probably compare unfavorably to an 80s era 8-bit machine in terms ...

Electronics engineer Ravinder who has been working in the embedded industry for past 10 years developing products based on Raspberry Pi, Raspberry Pi Pico, Arduino, Jetson Nano and others. Has taken ...

Specifications of the board include UART, TTL, RS485, DAC, ADC, I2C, nRF2401 and the board offers an external plugin using 2×4 header on board. Enabling users the ability to read 2 x TTL UART and 1 x ...