CY8CKIT-040 PSoC
®
4000 Pioneer Kit Guide, Doc. # 001-91316 Rev. *F
76
Code Examples
5.4.2
Project Description
5.4.2.1
PSoC Creator Component Configuration
CapSense
The CapSense Component is configured in SmartSense Auto-tuning mode with a 6x5 CapSense
touchpad widget for the design, according to the parameters given in
Table 5-9. CapSense Component Parameters
Parameter
Tab Present
Value
Rationale
Tuning method
General
Auto(Smart-
Sense)
Automatically adjust sensitivity for different system environ-
ments.
Threshold mode
Automatic
Enable run-time threshold calculation for 5:1 SNR
Raw data noise
filter
First Order
IIR 1/4
Filter out noise or unwanted spikes in raw count. This setting
can be tweaked based on requirement.
TouchPad0
Widgets Con-
fig
-
Add and configure the touchpad as shown in
Analog switch
drive source
Advanced
PRS-Auto
Reduce EMI emission and enhance EMC immunity.
Sensor auto-
reset
Disabled
Not required in the design. Add if required by the application.
Low baseline
reset
5
System-dependent number. Configure according to user
needs.
Inactive sensor
connection
Ground
Make the proximity loop not pick up any charge when not
scanned.
Shield
Disabled
Not used in the design.
Guard sensor
Disabled
Not used in the design.
Cmod precharge
Precharge by
Vref buffer
Vref is enough for precharging, as there is only one sensor.
Cmod voltage will not drop too low for a fast GPIO precharge.
Sensitivity
Scan Order
5
Select all the sensors by pressing and holding
[CTRL]
or
[Shift]
key and clicking on all the sensors. When selected,
enter a value in the
Sensitivity
field.
Enable Tuner
helper
Tune helper
Enabled/
Checked
Name = 'SCB'
Содержание CY8CKIT-040 PSoC 4000 Pioneer Kit
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Страница 73: ...CY8CKIT 040 PSoC 4000 Pioneer Kit Guide Doc 001 91316 Rev F 73 Code Examples Raw count and Baseline...