blob: e87f4de1476673cd32c313be94f9a1e288bfd557 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
-------------------------------------------------------------------------------
Epson 8564JE I2C RTC
-------------------------------------------------------------------------------
This an example capture of I2C traffic from/to an Epson 8564JE I2C RTC chip.
Logic analyzer setup
--------------------
The logic analyzer used for capturing was a ChronoVu LA8 at a sample rate
of 1MHz. The logic analyzer probes were connected to the RTC chip like this:
Probe RTC chip pin
------------------------
0 (green) SCL
6 (blue) SDA
GND GND
Data
----
The device talking to the RTC was doing the following in an infinite loop:
- Set the RTC to a specific date/time (Nov 22, 2011 - 04:03:54, weekday = 2).
- Read back the current time from the RTC.
The sigrok command line used was:
sigrok-cli -d 0:samplerate=1mhz --samples 8388608 \
-p '1=SCL,7=SDA,2-6,8' -o rtc_epson_8564je.sr
|