More than 2 serial ports on ATMega162

[Bertrand BAROTH]

Hello ... Since the Mega162 has already 2 hardware serial ports, I wonder if it should be possible to define up to 3 additional software ports ? And should these ports be numbered 1, 2, 3 or 3, 4, 5 ? Thanks for any answer ...

[Anobium]

Software Serial (Optimised) uses the numbering scheme of 1, 2 and 3. You therefore can use the two hardware serial plus the three software serial. And, you would address using the defined scheme.

HSerPrint "usart1", 1
HSerPrint "usart1", 2
Ser1Print "sw usart1"
Ser2Print "sw usart2"
Ser3Print "sw usart3"

This should work.

[Bertrand BAROTH]

Thanks, I will test as soon as I have all the hardware available ...

[Chris Roper]

If you wanted to use your number sequence Then use Anobiums code as above but to make your code readable you can additionally use #Define like this:

#define PrintPort1 HSerPrint "usart1", 1
#define PrintPort2 HSerPrint "usart2", 2
#define PrintPort3 Ser1Print "sw usart1"
#define PrintPort4 Ser2Print "sw usart2"
#define PrintPort5 Ser3Print "sw usart3"

[Anobium]

Clever.... very clever. But, all the constants would be in UPPERCASE. :-)

So, you define the constants to redefine all five serial comms line. Should work!

What a clever idea.

[Bertrand BAROTH]

Meanwhile I tested the PRINCIPLE with a Mega8515, the Nextion connected to Hardware port1, an Emic 2 connected to the pins used by serial port2 on the Mega 162 (2 and 3 on PortC), with these pins defined as software port1 : IT WORKS ! And thanks to Chris Roper, but I will use all serial communications in Subs, so the main program will not be "contaminated" ...