![]() I know when SoftwareSerial reads from the pin, it interrupt the controller which can screw up communication on Serial. I would like to understand a bit more, how they interfere. (you can say I'm a little stubborn, but I bet I'll learn something at the end)Ībout interrupt, Serials, I2C. Interface the GSM with an external UART is plan C. Replace the Nano by Micro is my actual plan D (but requires a lot of changes). I had a look at the Arduino Micro, but I can't really find where is that second Serial port or second UART. PCF8574: Displays: SIM800L: actually noneĪre there any consideration or limits to use these hardwares or,and API all together ?.If I removed the SIM80L and just initialize the SoftwareSerial. ![]()
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