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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/607084/tm4c123gh6pm-ttl-to-rs485-module-for-arduino-max485-chip-communication-transceiver
是否可以使用 TTL 到 RS485模块实现具有 Tiva C 123的 Arduino MAX485芯片通信收发器？
