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1 | ------------------------------------------------------------------------------- |
2 | TrekStor eBook Reader 3.0 UART | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is an example capture of the serial (UART) bootloader/firmware output on | |
6 | a TrekStor eBook Reader 3.0 EBR30-a (Weltbild + Hugendubel Edition). | |
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 | The firmware sends the debug output at 115200 baud, with 8n1 settings. | |
13 | ||
14 | ||
15 | Logic analyzer setup | |
16 | -------------------- | |
17 | ||
18 | The logic analyzer used for capturing is a ChronoVu LA8 at a sample rate | |
19 | of 1MHz. | |
20 | ||
21 | The ChronoVu LA8 probes were connected to the EBR30-a device like this: | |
22 | ||
23 | Probe EBR30-a | |
24 | ------------------- | |
25 | 1 (orange) TX | |
b1c3bd9b UH |
26 | |
27 | ||
28 | Data | |
29 | ---- | |
30 | ||
31 | The sigrok command line used was: | |
32 | ||
33 | sigrok-cli -d 0:samplerate=1mhz --samples 8388608 \ | |
34 | -p '1-8,2=TX' --wait-trigger --triggers 2=1 \ | |
35 | -o trekstor_ebr30_a_uart.sr | |
36 | ||
37 | The capturing starts when the TX signal is high for the first time (it's low | |
38 | before the device is powered-on). We capture as many samples as fit into the | |
39 | 8MByte buffer of the logic analyzer. | |
40 | ||
41 | The capture does not contain the complete bootloader/firmware output. | |
42 | ||
43 | For the full log see: | |
44 | ||
45 | http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_%28Weltbild_%2B_Hugendubel_Edition%29#UART | |
46 |