how slow is software serial compared to a hardware serial port on the mega?
how much of a delay is applied to the program when there is no information being written to the software serial port?
how much more of a delay is there when you write information to the software port vs a hardware serial port?
how slow is software serial compared to a hardware serial port on the mega?
Why would you be using SoftwareSerial on a device with 4 hardware serial ports?
how much of a delay is applied to the program when there is no information being written to the software serial port?
None.
how much more of a delay is there when you write information to the software port vs a hardware serial port?
However long it takes to shift the data out, which depends on the baud rate and amount of data.
Software serial output is not buffered. Hardware serial output is.