Unmasking IRQ for Serial

[uuk007]

I am new to writing drivers....
While writing serial driver for modem ..i have implemented all the functionalities and ISR also...
But when i am testing it ,control is not going to ISR..
I came to know that i have to unmask ISR...
Currently i am using IRQ3....

Can any one tell me how to do this?

[Solar]

Have you read the FAQ?

[ManOfSteel]

You send 11110111b (enable the COM2/4 only) to the 0x21 port.

[uuk007]

Hi all,

Thanks. I will modify the code and let you know if i faced any other problems.

As well as i will read the FAQ also.

Regards

UUK

[uuk007]

Hi,

It is working fine.

I have one more problem while writing.

Now i am trying without interrupt.

So in write method i have read the MCR Value and Or with 0x01.

Then i am reading MSR value.

But i am always getting 0xFF only.

I want to check CTS bit of MSR and send the value.

Whether my way of doing is wrong.

Please let me know how to do this.

Regards

UUK

[Therx]

There is a good guide on serial port programming at:-

www.beyondlogic.org

Pete