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