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hydrabus_mode_onewire.h
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hydrabus_mode_onewire.h
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/*
* HydraBus/HydraNFC
*
* Copyright (C) 2015 Benjamin VERNOUX
* Copyright (C) 2016 Nicolas OBERLI
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http:https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "hydrabus_mode.h"
#define ONEWIRE_PIN 11
/* OneWire commands */
#define ONEWIRE_CMD_READROM 0x33
#define ONEWIRE_CMD_MATCHROM 0x55
#define ONEWIRE_CMD_SEARCHROM 0xF0
#define ONEWIRE_CMD_SKIPROM 0xCC
void onewire_init_proto_default(t_hydra_console *con);
bool onewire_pin_init(t_hydra_console *con);
uint8_t onewire_read_u8(t_hydra_console *con);
void onewire_write_u8(t_hydra_console *con, uint8_t tx_data);
inline void onewire_low(void);
inline void onewire_high(void);
void onewire_send_bit(t_hydra_console *con, uint8_t bit);
uint8_t onewire_read_bit(t_hydra_console *con);
void onewire_cleanup(t_hydra_console *con);
void onewire_start(t_hydra_console *con);
struct onewire_scan_state {
uint8_t ROM_ADDR[8];
int last_discrepancy;
int last_family_discrepancy;
bool last_device_p;
uint8_t crc8;
};
enum onewire_scan_mode {
onewire_scan_start,
onewire_scan_continue,
};