X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=i2c%2Frtc_epson_8564je%2FREADME;h=60cd0759fb3296dd1f0b3a089cddf62a64a7c890;hb=47cd3c8ff64cd43ddf47f5da497b88e30616b162;hp=e87f4de1476673cd32c313be94f9a1e288bfd557;hpb=e63e73d94027ee7411e7137e985d8b32d2c917d7;p=sigrok-dumps.git

diff --git a/i2c/rtc_epson_8564je/README b/i2c/rtc_epson_8564je/README
index e87f4de..60cd075 100644
--- a/i2c/rtc_epson_8564je/README
+++ b/i2c/rtc_epson_8564je/README
@@ -2,20 +2,19 @@
 Epson 8564JE I2C RTC
 -------------------------------------------------------------------------------
 
-This an example capture of I2C traffic from/to an Epson 8564JE I2C RTC chip.
+This an example capture of I2C traffic from/to an Epson 8564JE I2C RTC chip,
+which has a slave address of 0x51 (or 0xa2, if the read/write bit is included).
 
 
 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:
+The logic analyzer used was a ChronoVu LA8 (at 1MHz):
 
   Probe       RTC chip pin
   ------------------------
   0 (green)   SCL
-  6 (blue)    SDA
-  GND         GND
+  1 (orange)  SDA
 
 
 Data
@@ -27,8 +26,20 @@ The device talking to the RTC was doing the following in an infinite loop:
 
  - Read back the current time from the RTC.
 
+This is what the decoded data should look like:
+
+ - Setting the date/time:
+   S Wr:0xa2 A 0x02 A 0x54 A 0x03 A 0x04 A 0x22 A 0x02 A 0x11 A 0x11 A P
+
+ - Reading the current date/time:
+   S Wr:0xa2 A 0x02 A Sr Rd:0xa3 A 0x54 A 0x03 A 0x44 A 0x62 A 0x52 A
+   0x51 A 0x11 N P
+
+ - The abbreviations used above: S = Start, Wr = Write, A = ACK, P = Stop,
+   Sr = Repeated start, Rd = Read, N = NACK
+
 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
+             -p '1=SCL,2=SDA' -o rtc_epson_8564je.sr