openpcd/openpicc/application/load_modulation.c

50 lines
1.5 KiB
C

/* AT91SAM7 PWM routines for OpenPICC
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sys/types.h>
#include <lib_AT91SAM7.h>
#include "openpicc.h"
void load_mod_level(u_int8_t level)
{
if (level > 3)
level = 3;
if (level & 0x1)
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD1);
else
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD1);
if (level & 0x2)
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD2);
else
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD2);
}
void load_mod_init(void)
{
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD1);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD2);
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD1);
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_LOAD2);
}