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Commit | Line | Data |
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1 | ------------------------------------------------------------------------------- | |
2 | TrekStor eBook Reader 3.0 I2C | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is a set of example captures of the I2C traffic on a TrekStor eBook | |
6 | Reader 3.0 EBR30-a (Weltbild + Hugendubel Edition) device. | |
7 | ||
8 | For details on the device see: | |
9 | ||
10 | http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_(Weltbild_%2B_Hugendubel_Edition) | |
11 | ||
12 | There are three chips which are connected to the main CPU's SCL/SDA pins: | |
13 | ||
14 | - Battery management chip: X-Powers AXP199 | |
15 | ||
16 | - RTC chip: Hec Semiconductor H8563S | |
17 | ||
18 | - Digital Thermal Orientation Sensor (DTOS): MEMSIC MXC6225XU | |
19 | ||
20 | ||
21 | trekstor_ebr30_a_i2c_0x15.sr | |
22 | ---------------------------- | |
23 | ||
24 | The logic analyzer used was a ChronoVu LA8 (at 4MHz): | |
25 | ||
26 | Probe I2C pin | |
27 | ------------------- | |
28 | 1 (orange) SCL | |
29 | 7 (yellow) SDA | |
30 | ||
31 | The sigrok command line used was: | |
32 | ||
33 | sigrok-cli -d 0:samplerate=4mhz --samples 8388608 \ | |
34 | -p '2=SCL,8=SDA' -o trekstor_ebr30_a_i2c_0x15.sr | |
35 | ||
36 | ||
37 | trekstor_ebr30_a_i2c_30s.sr and trekstor_ebr30_a_i2c_120s.sr | |
38 | ------------------------------------------------------------ | |
39 | ||
40 | This is a 30s/120s dump of the I2C traffic while the device was attached | |
41 | to USB. | |
42 | ||
43 | The logic analyzer used was a Saleae Logic (at 4MHz): | |
44 | ||
45 | Probe I2C pin | |
46 | ------------------- | |
47 | 4 (orange) SCL | |
48 | 6 (green) SDA | |
49 | ||
50 | The sigrok command line used was: | |
51 | ||
52 | sigrok-cli -d 0:samplerate=4mhz --time <time> | |
53 | -p '4=SCL,6=SDA' -o <filename.sr> | |
54 | ||
55 | (<time> was 30s or 120s) | |
56 |