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/*
* Copyright 2014-present Facebook. All Rights Reserved.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef BITBANG_H
#define BITBANG_H
#include <stdint.h>
typedef enum {
BITBANG_CLK_PIN,
BITBANG_DATA_IN,
BITBANG_DATA_OUT,
} bitbang_pin_type_en;
typedef enum {
BITBANG_PIN_LOW = 0,
BITBANG_PIN_HIGH = 1,
} bitbang_pin_value_en;
typedef enum {
BITBANG_CLK_EDGE_RISING,
BITBANG_CLK_EDGE_FALLING,
} bitbang_clk_edge_en;
typedef bitbang_pin_value_en (* bitbang_pin_func)(
bitbang_pin_type_en pin, bitbang_pin_value_en value, void *context);
typedef struct {
bitbang_pin_value_en bbi_clk_start;
bitbang_clk_edge_en bbi_data_out;
bitbang_clk_edge_en bbi_data_in;
uint32_t bbi_freq;
bitbang_pin_func bbi_pin_f;
void *bbi_context;
} bitbang_init_st;
typedef struct bitbang_handle bitbang_handle_st;
void bitbang_init_default(bitbang_init_st *init);
bitbang_handle_st* bitbang_open(const bitbang_init_st *init);
void bitbang_close(bitbang_handle_st *hdl);
typedef struct {
uint32_t bbio_in_bits;
uint32_t bbio_out_bits;
uint8_t *bbio_dout;
uint8_t *bbio_din;
} bitbang_io_st;
int bitbang_io(const bitbang_handle_st *hdl, bitbang_io_st *io);
#endif
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