From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Percival Subject: Re: Re: Regarding McBSP Int ...help needed... (Matthew Percival) Date: Wed, 21 Dec 2005 09:40:05 +1100 Message-ID: <1135118405.8928.17.camel@localhost.localdomain> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com Errors-To: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com To: Linux OMAP Open Source List-Id: linux-omap@vger.kernel.org G'Day, > There is indeed a bit a advance in the sense, My ISR is executed twice > now after including ur line of code. But after that no response. I would say that your interrupts are all working fine now (it is executes twice, it is unlikely that you have any problems there), but I would be inclined to say that your problem is related to your McBSP configuration: the interrupt is probably not being asserted a third time for some reason (you might want to watch the L2.0 handler registers to confirm this). My guess would be that you get the first interrupt, fill the McBSP buffer, and this buffer is then loaded to be transmitted; now the buffer is empty, you get the second interrupt and again fill the buffer. If the transmission never occurs, however, the buffer will never be emptied again, therefore the interrupt will not be asserted a third time. This is just speculation, but I would suggest first confirming that the interrupt is indeed asserted a third time, and if not then make sure that your McBSP is actually transmitting. -- Matthew