Revision 168:bfc84ee2839b analog_exp/onewire.h

b/analog_exp/onewire.h
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#define __onewire_h_
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#include <stdint.h>


  		





  
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#include <stdbool.h>


  		





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typedef char[8] onewire_id;


  		





  
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typedef uint8_t onewire_id[8];


  		





  
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typedef struct {


  		





  
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    int16_t temperature;


  		





  
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    uint8_t threshold_h;


  		





  
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    uint8_t threshold_l;


  		





  
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    uint8_t config;


  		





  
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    uint8_t resv0;


  		





  
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    uint8_t resv1;


  		





  
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    uint8_t resv2;


  		





  
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    uint8_t crc;


  		





  
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} ds18b20_scratchpad_t;


  		





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void onewire_tx_byte(uint8_t data);


  		





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uint8_t onewire_rx_byte(void);


  		





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void onewire_readrom(onewire_id id);


  		





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void onewire_matchrom(onewire_id id);


  		





  
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void onewire_skiprom(void);


  		





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void onewire_searchrom(onewire_id *id_list, uint8_t *n);


  		





  
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uint8_t onewire_crc8(uint8_t *data, uint8_t length);


  		





  
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bool onewire_crc_rom(onewire_id id);


  		





  
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void onewire_convert_t(void);


  		





  
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void onewire_write_scratchpad(uint8_t th, uint8_t tl, uint8_t config);


  		





  
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bool onewire_read_scratchpad(ds18b20_scratchpad_t *scratchpad);


  		





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#define ONEWIRE_CMD_READROM 0x33


  		





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#define ONEWIRE_CMD_SKIPROM 0xCC


  		





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#define ONEWIRE_CMD_MATCHROM 0x55


  		





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#define ONEWIRE_CMD_SEARCHROM 0xF0


  		





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#define ONEWIRE_CMD_CONVERT_T 0x44


  		





  
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#define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x4E


  		





  
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#define ONEWIRE_CMD_READ_SCRATCHPAD 0xBE


  		





  
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#define ONEWIRE_CMD_COPY_SCRATCHPAD 0x48


  		





  
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#define ONEWIRE_CMD_RECALL_EE 0xB8


  		





  
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#define ONEWIRE_CMD_READ_POWER 0xB4


  		





  
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#endif // __onewire_h_


  		





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