trekstor_ebr30_a: README: Document I2C slave addresses.

[sigrok-dumps.git] / i2c / trekstor_ebr30_a / README

diff --git a/i2c/trekstor_ebr30_a/README b/i2c/trekstor_ebr30_a/README
index 4a4da3a1ae861834e5f1787458c30b9d8dbd095d..8d3dde7cdda70e50cdad61ce5b9c1d586820501f 100644 (file)
--- a/i2c/trekstor_ebr30_a/README
+++ b/i2c/trekstor_ebr30_a/README
@@ -9,14 +9,22 @@ For details on the device see:
 
   http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_(Weltbild_%2B_Hugendubel_Edition)
 
-There are three chips which are connected to the main CPU's SCL/SDA pins.
-So far, it's unknown which device is responsible for which I2C output.
+There are three chips which are connected to the main CPU's SCL/SDA pins:
+
+ - Battery management chip: X-Powers AXP199
+  * I²C slave address: 0x34/52 (shifted: 0x68/104)
+
+ - RTC chip: Hec Semiconductor H8563S
+  * I²C slave address: 0x51/81 (shifted: 0xa2/162)
+
+ - Digital Thermal Orientation Sensor (DTOS): MEMSIC MXC6225XU
+   * I²C slave address: 0x15/21 (shifted: 0x2a/42)
 
 
 trekstor_ebr30_a_i2c_0x15.sr
 ----------------------------
 
-The logic analyzer used for capturing was a ChronoVu LA8:
+The logic analyzer used was a ChronoVu LA8 (at 4MHz):
 
   Probe       I2C pin
   -------------------
@@ -29,13 +37,13 @@ The sigrok command line used was:
              -p '2=SCL,8=SDA' -o trekstor_ebr30_a_i2c_0x15.sr
 
 
-trekstor_ebr30_a_i2c_30s.sr
----------------------------
+trekstor_ebr30_a_i2c_30s.sr and trekstor_ebr30_a_i2c_120s.sr
+------------------------------------------------------------
 
-This is a 30 second dump of the I2C traffic while the device was attached
+This is a 30s/120s dump of the I2C traffic while the device was attached
 to USB.
 
-The logic analyzer used for capturing was a Saleae Logic:
+The logic analyzer used was a Saleae Logic (at 4MHz):
 
   Probe       I2C pin
   -------------------
@@ -44,6 +52,8 @@ The logic analyzer used for capturing was a Saleae Logic:
 
 The sigrok command line used was:
 
-  sigrok-cli -d 0:samplerate=4mhz --time 120s
-             -p '4=SCL,6=SDA' -o trekstor_ebr30_a_i2c_30s.sr
+  sigrok-cli -d 0:samplerate=4mhz --time <time>
+             -p '4=SCL,6=SDA' -o <filename.sr>
+
+(<time> was 30s or 120s)