flipperzero-firmware/lib/onewire/one_wire_slave.h
2021-08-08 21:03:25 +03:00

75 lines
1.9 KiB
C++

#pragma once
#include <furi.h>
#include <furi-hal.h>
#include "one_wire_timings.h"
class OneWireDevice;
typedef void (*OneWireSlaveResultCallback)(bool success, void* ctx);
class OneWireSlave {
private:
enum class OneWireSlaveError : uint8_t {
NO_ERROR = 0,
READ_TIMESLOT_TIMEOUT,
WRITE_TIMESLOT_TIMEOUT,
WAIT_RESET_TIMEOUT,
VERY_LONG_RESET,
VERY_SHORT_RESET,
PRESENCE_LOW_ON_LINE,
READ_TIMESLOT_TIMEOUT_LOW,
AWAIT_TIMESLOT_TIMEOUT_HIGH,
PRESENCE_HIGH_ON_LINE,
INCORRECT_ONEWIRE_CMD,
INCORRECT_SLAVE_USAGE,
TRIED_INCORRECT_WRITE,
FIRST_TIMESLOT_TIMEOUT,
FIRST_BIT_OF_BYTE_TIMEOUT,
RESET_IN_PROGRESS
};
const GpioPin* one_wire_pin_record;
// exti callback and its pointer
void exti_callback(void* _ctx);
void (*exti_cb)(void* _ctx);
uint32_t __instructions_per_us;
OneWireSlaveError error;
OneWireDevice* device = nullptr;
bool bus_start(void);
void pin_set_float(void);
void pin_set_low(void);
void pin_init_interrupt_in_isr_ctx(void);
void pin_init_opendrain_in_isr_ctx(void);
OneWiteTimeType wait_while_gpio_is(OneWiteTimeType time, const bool pin_value);
bool show_presence(void);
bool receive_and_process_cmd(void);
bool receive_bit(void);
bool send_bit(bool value);
void cmd_search_rom(void);
OneWireSlaveResultCallback result_cb = nullptr;
void* result_cb_ctx = nullptr;
public:
void start(void);
void stop(void);
bool send(const uint8_t* address, const uint8_t data_length);
bool receive(uint8_t* data, const uint8_t data_length = 1);
OneWireSlave(const GpioPin* pin);
~OneWireSlave();
void attach(OneWireDevice* device);
void deattach(void);
void set_result_callback(OneWireSlaveResultCallback result_cb, void* ctx);
};