| /*************************************************************************** | |
| * __________ __ ___. | |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | |
| * \/ \/ \/ \/ \/ | |
| * $Id$ | |
| * | |
| * Copyright (C) 2008 by Catalin Patulea | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License | |
| * as published by the Free Software Foundation; either version 2 | |
| * of the License, or (at your option) any later version. | |
| * | |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | |
| * KIND, either express or implied. | |
| * | |
| ****************************************************************************/ | |
| #include "audio.h" | |
| #include "registers.h" | |
| void audiohw_init(void) | |
| { | |
| /* Configure McBSP */ | |
| SPCR10 = 0; /* Receiver reset */ | |
| SPCR20 = 3 << 4; /* Rate gen disabled, RINT=XSYNCERR, TX disabled for now */ | |
| PCR0 = 1 << 1; /* Serial port pins, external frame sync, external clock, | |
| frame sync FSX is active-high, | |
| TX data sampled on falling clock */ | |
| XCR10 = 0x00a0; /* 1 word per frame, 32 bits per word */ | |
| XCR20 = 0; /* Single-phase, unexpected frame pulse restarts xfer, | |
| 0-bit data delay */ | |
| } | |
| void audiohw_postinit(void) | |
| { | |
| /* Trigger first XEVT0 */ | |
| SPCR20 |= 1; | |
| } |