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Hi, I'm using a TMS320C6711 DSP with a PCM3003 Audio Daughter card. Can anybody explain me how to configure the DSP/BIOS (for RTDX usage) on a program that uses hardware interrupts (like 'loop_intr_pcm' by R. Chassaing)? This is what I am doing (please correct): -Initialize the audio codec (c6x11_dsk_init(), see code bellow). -The interrupts are initialized by the DSP/BIOS configuration, so they are not configured in my code. -In the DSP/BIOS configuration, select HWI_INT11 and fill in with MCSP_0_RECEIVE and the function to call. Do I need to use Dispatcher, since the function which is called is written in C? What am I missing (am I doing anyhing right?... :S ) I also tried 'An Audio Example Using DSP/BIOS' (SPRA598), but it uses the onboard AD535 instead of my PCM3003... Thanks, Andre void c6x11_dsk_init() /* dsp and periphiral initialization */ { CSR=0x100; /* disable all interrupts */ IER=1; /* disable all interrupts except NMI */ ICR=0xffff; /* clear all pending interrupts */ *(unsigned volatile int *)EMIF_GCR = 0x3300; /*EMIF global control */ *(unsigned volatile int *)EMIF_CE0 = 0x30; /*EMIF CE0control*/ *(unsigned volatile int *)EMIF_CE1 = 0xffffff23; /*EMIF CE1 control, 8bit async */ *(unsigned volatile int *)EMIF_SDCTRL = 0x57116000; /* EMIF SDRAM control */ *(unsigned volatile int *)EMIF_SDRP = 0x61a; /* EMIF SDRM refresh period */ *(unsigned volatile int *)EMIF_SDEXT = 0x54529; /* EMIF SDRAM extension */ Act_Fs=SampleRate(Fs); mcbsp1_init(); } |
Audio I/O with PCM3003 and DSP/BIOS
Started by ●July 16, 2003
