forked from youen/OneWireArduinoSlave
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65 lines
1.6 KiB
65 lines
1.6 KiB
10 years ago
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#ifndef iButton_h
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#define iButton_h
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#if defined(ARDUINO) && ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include <inttypes.h>
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// You can exclude CRC checks altogether by defining this to 0
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#ifndef OWSlave_CRC
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#define OWSlave_CRC 1
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#endif
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// Select the table-lookup method of computing the 8-bit CRC
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// by setting this to 1. The lookup table no longer consumes
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// limited RAM, but enlarges total code size by about 250 bytes
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#ifndef OWSlave_CRC8_TABLE
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#define OWSlave_CRC8_TABLE 0
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#endif
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#define FALSE 0
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#define TRUE 1
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#define ONEWIRE_NO_ERROR 0
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#define ONEWIRE_READ_TIMESLOT_TIMEOUT 1
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#define ONEWIRE_WRITE_TIMESLOT_TIMEOUT 2
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#define ONEWIRE_WAIT_RESET_TIMEOUT 3
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#define ONEWIRE_VERY_LONG_RESET 4
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#define ONEWIRE_VERY_SHORT_RESET 5
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#define ONEWIRE_PRESENCE_LOW_ON_LINE 6
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class OWSlave {
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private:
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bool waitTimeSlot();
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uint8_t pin_bitmask;
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volatile uint8_t *baseReg;
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char rom[8];
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public:
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bool recvAndProcessCmd();
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OWSlave(uint8_t pin);
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void setRom(unsigned char rom[8]);
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void setRomnc(unsigned char rom[8]);
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bool waitForRequest(bool ignore_errors);
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bool waitReset(uint16_t timeout_ms);
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bool waitReset();
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bool presence(uint8_t delta);
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bool presence();
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bool search();
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uint8_t sendData(char buf[], uint8_t data_len);
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uint8_t recvData(char buf[], uint8_t data_len);
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void send(uint8_t v);
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uint8_t recv(void);
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void sendBit(uint8_t v);
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uint8_t recvBit(void);
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#if OWSlave_CRC
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static uint8_t crc8(char addr[], uint8_t len);
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#endif
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uint8_t errno;
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};
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#endif
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