Thanks for all the help. I found the problem to be in the code supplied with sdk 2.41. Upgrading to 2.5 fixed the problem. I do have one more annoyance. Motorola claims that the DSP56800 series can be used to implement a graphic equalizer for audio using 10 5th order IIR filters at 48kHz. This is why I choose the 56827 DSP. Sampling in mono at 8kHz I don't have enough time to run 5 2nd order IIR filters. I must be doing something wrong. This is what I'm doing: Read 1 sample Perform filtering Write 1 sample Does anyone have any hints? Thanks, James > From: "Michael Hodges" <> > Date: Tue, 18 Jun 2002 21:52:30 +0100 > To: <>, "James Ball" <> > Subject: Re: [motoroladsp] DSP56827 Codec > > Hello James, > > I seem to remember a similar problem with the 56F826EVM some time ago. > Take a look in config.h, (Embedded > SDK\src\dsp56f827evm\nos\config\confih.h),and check the following lines, > > #define CODEC_ISL CODEC_LEFT_INPUT_LINE_1 > #define CODEC_ISR CODEC_RIGHT_INPUT_LINE_1 > > I seem to remember they wrongly configured the codec for line 2 and the > audio input is connected to line 1. > If it says LINE_2, change the 2 to a 1 and it should work. > > Regards, > > Mick Hodges > > > ----- Original Message ----- > From: "James Ball" <> > To: <> > Sent: Saturday, June 15, 2002 3:13 PM > Subject: [motoroladsp] DSP56827 Codec > Im working on a project for school and have been giving a DSP56827. Ive > installed the Motorola SDK 2.41 and have tried to run the Codec sample > project that came with the SDK through CodeWarrior, but it will not work. I > have probed all the data lines around the codec (clock, sync and data to the > DSP) and they seem to be working correctly but the DSP cannot read or write > any data. It looks like there is a problem with either the software or the > DSP itself. I can download and test some other sample programs such as the > quad timer, but again Im unable to send and receive serial data through the > SCI port using the sample code. I find it hard to believe that part of the > DSP isnt working, but I also find it hard to believe that the sample code > given by Motorola doesnt work either. > > As I am new to this board I may be missing something so any help would be > greatly appreciated. > > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author of > this message will receive your answer. You need to do a "reply all" if you > want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: > > To Post: > > To Leave: > > Archives: http://www.yahoogroups.com/group/motoroladsp > > More Groups: http://www.dsprelated.com/groups.php3 > ">http://docs.yahoo.com/info/terms/ > > |