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/*
Copyright (C) 2000-2001 Jos Roberto B. de A. Monteiro <jrm@autsens.com>
and Pedro Zorzenon Neto <pzn@autsens.com>
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 "avrpp.h"
#define extern
#include <sys/io.h>
#undef extern
#include <stdlib.h>
/* begin of reg_pp functions */
struct reg_pp * rpp_new() {
return (struct reg_pp *) malloc(sizeof(struct reg_pp));
}
struct reg_pp * rpp_init(struct reg_pp * reg,
unsigned short base, int offset, int row) {
reg->base=base;
reg->offset=offset;
reg->row=row;
return reg;
}
void rpp_delete(struct reg_pp * reg) {
if (reg) free(reg);
}
void rpp_set(struct reg_pp * reg) {
unsigned char data;
unsigned short addr;
addr = reg->base + reg->offset;
data = inb(addr);
data |= 1<<reg->row;
outb(data, addr);
/* printf("set 0x%x=0x%x (%d,%d)\n", addr, data, reg->offset, reg->row); */
}
void rpp_clear(struct reg_pp * reg) {
unsigned char data;
unsigned short addr;
addr = reg->base + reg->offset;
data = inb(addr);
data &= ~(1<<reg->row);
outb(data, addr);
/* printf("clr 0x%x=0x%x (%d,%d)\n", addr, data, reg->offset, reg->row); */
}
unsigned char rpp_read(struct reg_pp * reg) {
unsigned char data;
unsigned short addr;
addr = reg->base + reg->offset;
data = inb(addr);
data >>= reg->row;
data &= 1;
return data;
}
void rpp_write(struct reg_pp * reg, int val) {
if (val)
rpp_set(reg);
else
rpp_clear(reg);
}
/* end of reg_pp functions */
/* begin of avr_serial_pp functions */
ASPP * aspp_new() {
return (ASPP *) malloc(sizeof(ASPP));
}
ASPP * aspp_init(ASPP *aspp, unsigned short base) {
aspp->NSCK=rpp_init(rpp_new(), base, 2, 0);
aspp->NMISO=rpp_init(rpp_new(), base, 1, 7);
aspp->MOSI=rpp_init(rpp_new(), base, 0, 0);
aspp->RESET=rpp_init(rpp_new(), base, 2, 2);
return aspp;
}
void aspp_delete(ASPP *aspp) {
rpp_delete(aspp->NSCK);
rpp_delete(aspp->NMISO);
rpp_delete(aspp->MOSI);
rpp_delete(aspp->RESET);
free(aspp);
}
void aspp_SCK(ASPP *aspp, int data) {
rpp_write(aspp->NSCK, !data);
}
int aspp_MISO(ASPP *aspp) {
return ! rpp_read(aspp->NMISO);
}
void aspp_MOSI(ASPP *aspp, int data) {
rpp_write(aspp->MOSI, data);
}
void aspp_RESET(ASPP *aspp, int data) {
rpp_write(aspp->RESET, data);
}
/* end of avr_serial_pp functions */
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