4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
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24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
30 * All Rights Reserved.
33 * \brief HW pin handling.
37 * \author Francesco Sacchi <batt@develer.com>
44 #include <cfg/macros.h>
46 #define TAS5706A_SETPOWERDOWN(val) do { if (val) PIOA_CODR = BV(6); else PIOA_SODR = BV(6); } while (0)
47 #define TAS5706A_SETRESET(val) do { if (val) PIOA_CODR = BV(7); else PIOA_SODR = BV(7); } while (0)
48 #define TAS5706A_SETMUTE(val) do { if (val) PIOA_CODR = BV(8); else PIOA_SODR = BV(8); } while (0)
50 #define TAS5706A_PIN_INIT() \
52 TAS5706A_SETPOWERDOWN(true); \
53 TAS5706A_SETRESET(true); \
54 TAS5706A_SETMUTE(true); \
55 PIOA_PER = BV(6) | BV(7) | BV(8); \
56 PIOA_OER = BV(6) | BV(7) | BV(8); \
59 #define TAS5706A_MCLK_INIT() \
61 PIOA_PDR = BV(2); /* enable PWM pin */ \
62 PWM_CMR2 = 0; /* set prescaler to MCK, left aligned, start with low level */ \
63 PWM_CPRD2 = 4; /* 11.2896 MHz MCLK */ \
64 PWM_CDTY2 = 2; /* 50% duty */ \
65 PWM_ENA = BV(2); /* Enable PWM on MCLK pin */ \
69 #endif /* HW_TAS5706A_H */