Hello,
I have two newbie questions:
1. I see that on boards, the same I/O pin has different names (eg. IO17 = I/O/T, RTC_IO17, DAC1, ADC2_CH6, UART1_TX). I would like to understand why. Does each pin use a different voltage + current? Can each only be used for a specific task?
2. It seems there are several protocols to talk to a sensor (Modbus, I2C, SPI, UART, possibly others.) Is there a good article that explains the differences, and how to work with each?
FWIW, I need to interact with a sensor through the serial port (UART?).
Thank you.