SAM4L Datasheet, PDF (926/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

34.7.3 Sensor Idle Level
Name:
IDLE
Access Type:
Read/Write
Offset:
0x08
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
-
-
-
-
RIDLE[15:12]
23
22
21
20
19
18
17
16
RIDLE[11:4]
15
14
13
12
11
10
9
8
RIDLE[3:0]
FIDLE[11:8]
7
6
5
4
3
2
1
0
FIDLE[7:0]
This register value is subtracted from initial measurement data in order to determine the relative capacitance. The IDLE value is
updated as a moving exponential weighted average of previous measurements, with the time-constant given in TIMING.TIDLE.
This register value is updated when ISR.SAMPLE is set.
• RIDLE: Integer Sensor Idle
This field contains the integer part of the measured idle-signal value.
• FIDLE: Fractional Sensor Idle
This field contains the fractional part of the measured idle-signal value. Note that some of the LSB’s of the fractional part might
not be implemented. Refer to the Module Configuration section.
42023C–SAM–02/2013
926