Wrong Pin count...

[Anonymous]

Hello ALL

   

I used UART component, I kept the buffer size  for both tx and rx as 20. So internal interrupt is enabled .we can write the interrupt code in the UART_Int.c file right........

   

But why does the component provide two interrupt pins to be connected. even though i have not enabled any of the interrupts. i have attached the screen shots..

   

And second thing ,  i am using one LCD which takes 6 pins, one for RX and other pin for TX... on building the project the report file says that i have used 12 pins.....and allows me to use only 60 pins out of 72...... what is wrong ...

   

i have attached all the screeen shots

[Anonymous]

here is the report file

[Anonymous · Accepted solution]

Try disabling debugging pins in DWR -> System -> Programming\Debugging. Then you should see that 9 pins are used (7 by LCD and 2 by UART).

       

Regards,

   

Aniruddha

[Anonymous]

Doy you mean to disable Serial wire viewer and Require Xres pin- because these are the things that are enabled in the programming/debugging section....

   

But what are the side effects ...i cant debug the device ..after disabling them

[Bob_Marlowe]

When it comes to production of a let's say 1k samples project the pin-count may be of mercantile concern. So having a handful of pins bound to debugging freed (what are they for? its the final production)  could give the chance of using a smaller (cheaper) part. Even programming before soldering can save some pins and might enlargen your financal success.

       

Bob

[ETRO_SSN583]

Unfortunately for the time being only packages available are

   

68 QFN and 100 TQFP.

       

Regards, Dana.

[Bob_Marlowe]

Yes, what I'd said: When you need one IO-pin more than the 68-pin device offers, you can built the prototype with debug capabilities with the 100-pin device and for the final version switch to the 68-pinner by disabling the debugging capabilities.

       

Bob

[ETRO_SSN583]

Understood, just making the point about limited package availability, discussed in

   

the forums a number of times in the past.

       

Regards, Dana.