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rs232 - Upon setting up serial UART between two boards I can only monitor send or receive, not both, Why? - Electrical Engineering Stack Exchange
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GitHub - xanthium-enterprises/ATmega328p-to-PC-RS485-communication-tutorial: Tutorial on interfacing your PC with an ATmega328P microcontroller using RS485 Protocol for Bidirectional Communication.
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RS232 Communication Bus, RS485, I2C, SPI, CAN, JTAG PDF | PDF | Digital Electronics | Data Transmission
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