flipperzero-firmware/lib/onewire/one_wire_slave_gpio.h
DrZlo13 1f761d7fbb
[FL-84] iButton app, dallas emulate + cyfral read, cyfral emulate (#253)
* maxim crc function
* one wire template device and ds1990 classes
* 3 fields for addr
* cyfral emulator lib
* add cyfral read mode, refract rendering and events
* add ADC1_IN14, add adc interrupt
* cyfral read mode
* rename and move api-hal includes folder
* build onewire libs only if we build app
* start in mode 0
2020-11-25 10:25:13 +03:00

93 lines
2.6 KiB
C++

#pragma once
#include "flipper.h"
#include "flipper_v2.h"
#include "one_wire_timings.h"
// TODO fix GPL compability
// currently we use rework of OneWireHub
#define ONE_WIRE_MAX_DEVICES 1
#define ONE_WIRE_TREE_SIZE ((2 * ONE_WIRE_MAX_DEVICES) - 1)
#define OWET OneWireEmulateTiming
class OneWireDevice;
enum class OneWireGpioSlaveError : uint8_t {
NO_ERROR = 0,
READ_TIMESLOT_TIMEOUT = 1,
WRITE_TIMESLOT_TIMEOUT = 2,
WAIT_RESET_TIMEOUT = 3,
VERY_LONG_RESET = 4,
VERY_SHORT_RESET = 5,
PRESENCE_LOW_ON_LINE = 6,
READ_TIMESLOT_TIMEOUT_LOW = 7,
AWAIT_TIMESLOT_TIMEOUT_HIGH = 8,
PRESENCE_HIGH_ON_LINE = 9,
INCORRECT_ONEWIRE_CMD = 10,
INCORRECT_SLAVE_USAGE = 11,
TRIED_INCORRECT_WRITE = 12,
FIRST_TIMESLOT_TIMEOUT = 13,
FIRST_BIT_OF_BYTE_TIMEOUT = 14,
RESET_IN_PROGRESS = 15
};
class OneWireGpioSlave {
private:
const GpioPin* gpio;
bool overdrive_mode = false;
uint8_t cmd;
OneWireGpioSlaveError error;
uint8_t error_place;
uint8_t devices_count;
OneWireDevice* devices[ONE_WIRE_MAX_DEVICES];
OneWireDevice* device_selected;
struct IDTree {
uint8_t device_selected; // for which slave is this jump-command relevant
uint8_t id_position; // where does the algorithm has to look for a junction
uint8_t got_zero; // if 0 switch to which tree branch
uint8_t got_one; // if 1 switch to which tree branch
} id_tree[ONE_WIRE_TREE_SIZE];
public:
OneWireGpioSlave(const GpioPin* one_wire_gpio);
~OneWireGpioSlave();
void start(void);
void stop(void);
bool emulate();
bool check_reset(void);
bool show_presence(void);
bool receive_and_process_cmd(void);
bool receive(uint8_t* data, const uint8_t data_length = 1);
bool receive_bit(void);
bool send_bit(bool value);
bool send(const uint8_t* address, const uint8_t data_length = 1);
OneWiteTimeType wait_while_gpio_is(volatile OneWiteTimeType retries, const bool pin_value);
// set pin state
inline void pin_set_float();
inline void pin_set_low();
// get error text
const char* decode_error();
// devices managment
uint8_t attach(OneWireDevice& device);
bool detach(const OneWireDevice& device);
bool detach(uint8_t device_number);
uint8_t get_next_device_index(const uint8_t index_start = 0) const;
// id tree managment
uint8_t build_id_tree(void);
uint8_t build_id_tree(uint8_t id_bit_position, uint32_t device_mask);
uint8_t get_first_bit_set_position(uint32_t mask) const;
uint8_t get_first_id_tree_el_position(void) const;
// commands
void cmd_search_rom(void);
};