Automatic Update; Updating The Sensor Configuration Data Registers; User Modifiable Registers; Table 4 User Modifiable Registers - GE DPS 5000 Series User Manual

i. Initiate a data update.
Write 0b1 to STATUS: CONV <0 [0]>
Writing 0b1 to STATUS: CONV automatically clears the new data available flag. It is
set back to 0b1 when the updated data is available which can then be read using
the steps given in section 4.2.
4.3.2

Automatic update

The user initiates the automatic generation of new data requests at a pre-defined
interval:
i. Clear the new data available flag.
Write 0b0 to STATUS: CONV <0 [0]>
ii. Set the auto-update mode bit.
Write 0b1 to STATUS: AUTO <0 [8]>
The new data available flag is set to 0b1 when the updated data is available which
can then be read using the steps given in section 4.2. When in the auto-update
mode, reading the COMP_PRES, COMP_TEMP, ADC_PRES, ADC_TEMP, MVOLT_PRES
or MVOLT_TEMP register (addresses 1, 2, 3, 4, 6 and 7 respectively) will automatically
clear the new data available flag.
As supplied, the auto-update period is set to the default value of 100 ms but it may
be changed by the user (see section 4.4.3).
4.4

Updating the sensor configuration data registers

4.4.1

User modifiable registers

The configuration data registers provide information for the user and allow the user
to change the functionality of the sensor. Table 4 lists the configuration data
registers that can be modified by the user.
Addr Register
66 I2C_ADDR
68 GAIN_ADJ
69 OFFSET_ADJ
72 CAL_DATE
82 AVERAGE
With the exception of the I2C_ADDR and DELAY registers, any change to a register
value takes immediate effect. The changes made to a register value may be
temporary or permanent:
Temporary - the modified register value will remain valid until the either the
sensor is reset via the status register or the sensor power is cycled.
Permanent - the modified register value is written to non-volatile memory and
then remains valid even if the sensor is reset via the status register or the
sensor power is cycled.
The configuration data registers are normally locked to prevent inadvertent
changes from being made. The following steps are required unlock the registers:
i. Enable changes to the configuration data registers.
Write 4118 to ACCESS: ACCESS [31..0] <5 [31..0]>
22
See section(s) Addr
4.4.2 83
4.4.8 84
4.4.8 85
4.4.8 87
4.4.6
Table 4 User modifiable registers
May 2015
Register See section(s)
PRES_CONV 4.4.4, 4.4.8
PRES_UNIT 4.4.4
DELAY 4.4.3
TARE_VALUE 4.4.5
K0582 Revision B