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I am using the EZkit lite with the 21060. I am trying to receive audio data using sport1 and then send it to the DAC on sport0. I am using external serial clock, rfs, etc. I am editing the supplied tt.c file but am feeling somewhat overwhelmed by the vast number of configuration bits, addressing, etc. I have copied and pasted the setup_sports routine back into tt.c to provide two instances of it. I have then gone through the copy exchanging all instances of sport0 for sport1 and editing the register bits as required. Similarly, I have copied and edited the sport0 interrupt service routines. i.e.) void spr0_asserted( int sig_num ) { } and void spr0_asserted( int sig_num ) { } were copied and changed to; void spr1_asserted( int sig_num ) { } and void spr1_asserted( int sig_num ) { } I also enable these interrupts by coping and editing; /* Enable sport0 xmit & rcv irqs (DMA enabled) */ interrupt(SIG_SPR0I, spr0_asserted); interrupt(SIG_SPT0I, spt0_asserted); to /* Enable sport1 xmit & rcv irqs (DMA enabled) */ interrupt(SIG_SPR1I, spr1_asserted); interrupt(SIG_SPT1I, spt1_asserted); This causes the SHARC to crash. When I comment out the sport1 interrupt enables above, it no longer crashes. Does anyone have some sample code that deals with sport1 in C that they are willing to send me, or can someone perhaps suggest a smarter approach to developing an algorithm? Thanks in advance, Jeremy |
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SPORT1
Started by ●April 6, 2003
Reply by ●April 7, 20032003-04-07
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On Sun, 6 Apr 2003, Jeremy Gleeson wrote: > I am using the EZkit lite with the 21060. > > I am trying to receive audio data using sport1 and then send it to the >DAC on sport0. I am using external serial clock, rfs, etc. How is the hardware configured? Isn't sport0 a codec with both input and output? Have you added your own serial ADC to sport1? I think you moved the configuration info correctly, but what kind of hardware is out there for it to connect to? Patience, persistence, truth, Dr. mike |
