AVR-Chat

I have done four ports on a ATmega16. It has one hardware uart. This was
done in Basic (BASCOM). And it works well. Maybe this will help.

At the start:

''''''''''''''''''''''''''''''
' Open com ports
''''''''''''''''''''''''''''''
'open portD.4 for output to HOPTO
Open "comd.4:9600,8,n,1" For Output As #1

'open portD.5 for input from Hopto
Open "comd.5:9600,8,n,1" For Input As #2

'open portD.6 for output To Particle Counter
Open "comd.6:9600,8,n,1" For Output As #3

'open portD.7 for input from Particle Counter
Open "comd.7:9600,8,n,1" For Input As #4

'open portC.2 for output to Hand Held
Open "comc.2:9600,8,n,1" For Output As #5

'open portC. for input from HandHeld
Open "comc.3:9600,8,n,1" For Input As #6


I then just print to the port numbers ie.

Print "Hello"  ' output to hardware uart
Print #1, "Hello"   ' would output to software port 1
waitkey(#2)  ' would wait for input


And at the end.

'''''''''''''''''''''''
'  close com ports
'''''''''''''''''''''''
Close #1
Close #2
Close #3
Close #4
Close #5
Close #6


JoeT


-----Original Message-----
From: Wagner Lipnharski [mailto:wagner@ustr.net]
Sent: Wednesday, February 04, 2004 11:36 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] How to implement 6 UART Serial Connections using
Atmega128


suri_list wrote:
> We have to implement 6 serial connections to 6 modules from each
> module. we are going to use the atmega128 on each module.
>
> The atmega128 has 2 uarts so i can implement 2 simultaneous uarts.
> It is preferable not to have any external components (we have to keep
> footprint small) , so i want to do everything with the atmega128.
>
> -- But what abt the other 4. Will I have to bit bang the rest of the
> 4 using a software routine uart?
>
> -- Any other interesting solution which will allow me to use timers
> or something so that the cpu doesnt have to be busy doing the serial
> commn