47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*---------------------------------------------------------------------------*\
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FILE........: stm32f4_dac.h
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AUTHOR......: David Rowe
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DATE CREATED: 1 June 2013
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Two channel FIFO buffered DAC driver module for STM32F4.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2013 David Rowe
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __STM32F4_DAC__
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#define __STM32F4_DAC__
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#define DAC_BUF_SZ 320
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/* divisors for various sample rates */
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#define DAC_FS_8KHZ 10500
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#define DAC_FS_16KHZ 5250
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#define DAC_FS_48KHZ 1750
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#define DAC_FS_96KHZ 875
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void dac_open(int fs_divisor, int fifo_sz, short *buf1, short *buf2);
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int dac1_write(short buf[], int n, int limit); /* DAC1 pin PA4 */
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int dac1_free();
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int dac2_write(short buf[], int n, int limit); /* DAC2 pin PA5 */
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int dac2_free();
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#endif
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