Hello, a short describtion of the project and problem: I have an SAMD21 chip (Arduino Zero) which is connected over the normal "Serial" to the Arduino ISE on the PC by USB, and on the SERIAL1 there is a SIM868 connected (same as SIM800 just with GPS) over nomral UART RX/TX Baudrate 115200. The pr…

Arduino ZERO (SAMD21) SERIAL1 Buffer size

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