Figure 5.
STEVAL-ISB042V1 GUI operation mode
1.4
STWLC33 NVM configuration
The
STWLC33
NVM configuration is the same default configuration as in STWLC33 samples (see STWLC33 da-
tasheet).
1.4.1
Board overview
The STEVAL-ISB042V1 evaluation board default configuration has good performance.
The board features:
•
STWLC33 evaluation board with Würth Elektronik dual mode coil (760308102207)
•
Qi 1.2 compliant, supporting extended power profile: up to 15 W/10 V maximum output power
•
Backward compatible with Qi baseline power profile: up to 5 W/5 V maximum output power
•
PMA-SR1 (AirFuel inductive) compliant: 5 W/5.6 V maximum output power
•
Transmitter function based on Qi protocol to charge wearable devices using the same Rx coil (up to 3 W
power)
•
Total system efficiency up to 80%
•
Configurable GPIOs for status indication
•
I²C interface for communication with the host system
•
Foreign object detection (FOD)
•
Complete kit (IC, firmware)
•
RoHS compliant
1.5
GUI: I²C register access
Most fields in the GUI application correspond to a single I²C register.(For further details, see STWLC33 datasheet
on www.st.com.)
Many registers are accessible in receiver or transmitter mode only.
Before accessing the registers, you must check the actual operation mode in the
Sys_Op_Mode
register.
1.5.1
Rx mode registers
The
Registers
tab contains three sub-tabs related to Rx mode I²C register controls.
Through the
Interrupt registers
sub-tab, you can monitor the following registers:
•
Status_Rx
•
INT_Rx
•
INT_Enable_Rx
•
INT_Clear_Rx
The GUI directly reads or writes the target register.
The
Interrupt clear
button first writes the
INT_Clear_Rx
register and then writes 1 in the
Clr_Int bit in Com
register.
UM2289
STWLC33 NVM configuration
UM2289
-
Rev 2
page 5/26
