si70xx_internals.h File Reference
Drivers » Sensor Device DriversDrivers » | [S]ensor [A]ctuator [U]ber [L]ayer » Si7006/13/20/21 temperature and humidity sensors

Internal definitions for Si7006/13/20/21. More...

Detailed Description

Internal definitions for Si7006/13/20/21.

Author
Bas Stottelaar basst.nosp@m.otte.nosp@m.laar@.nosp@m.gmai.nosp@m.l.com

Definition in file si70xx_internals.h.

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#define SI70XX_I2C_ADDRESS   (0x40)
 Si70xx chip addresses.
 

Si70xx device commands.

#define SI70XX_MEASURE_RH_HOLD   (0xE5)
 
#define SI70XX_MEASURE_RH   (0xF5)
 
#define SI70XX_MEASURE_TEMP_HOLD   (0xE3)
 
#define SI70XX_MEASURE_TEMP   (0xF3)
 
#define SI70XX_MEASURE_TEMP_PREV   (0xE0)
 
#define SI70XX_RESET   (0xFE)
 
#define SI70XX_WRITE_USER_REG   (0xE6)
 
#define SI70XX_READ_USER_REG   (0xE7)
 
#define SI70XX_WRITE_HEATER_REG   (0x51)
 
#define SI70XX_READ_HEATER_REG   (0x11)
 
#define SI70XX_READ_ID_FIRST_A   (0xFA)
 
#define SI70XX_READ_ID_FIRST_B   (0x0F)
 
#define SI70XX_READ_ID_SECOND_A   (0xFC)
 
#define SI70XX_READ_ID_SECOND_B   (0xC9)
 
#define SI70XX_READ_REVISION_A   (0x84)
 
#define SI70XX_READ_REVISION_B   (0xB8)
 

Si70xx register values.

#define SI70XX_REVISION_1   (0xFF)
 
#define SI70XX_REVISION_2   (0x20)