blob: d953b469c1c375dbcde79831ff2921a07f9414aa (
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
35
36
37
38
39
40
41
42
43
44
45
46
|
-------------------------------------------------------------------------------
TrekStor eBook Reader 3.0 UART
-------------------------------------------------------------------------------
This is an example capture of the serial (UART) bootloader/firmware output on
a TrekStor eBook Reader 3.0 EBR30-a (Weltbild + Hugendubel Edition).
For details on the device see:
http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_(Weltbild_%2B_Hugendubel_Edition)
The firmware sends the debug output at 115200 baud, with 8n1 settings.
Logic analyzer setup
--------------------
The logic analyzer used for capturing is a ChronoVu LA8 at a sample rate
of 1MHz.
The ChronoVu LA8 probes were connected to the EBR30-a device like this:
Probe EBR30-a
-------------------
1 (orange) TX
Data
----
The sigrok command line used was:
sigrok-cli -d 0:samplerate=1mhz --samples 8388608 \
-p '1-8,2=TX' --wait-trigger --triggers 2=1 \
-o trekstor_ebr30_a_uart.sr
The capturing starts when the TX signal is high for the first time (it's low
before the device is powered-on). We capture as many samples as fit into the
8MByte buffer of the logic analyzer.
The capture does not contain the complete bootloader/firmware output.
For the full log see:
http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_%28Weltbild_%2B_Hugendubel_Edition%29#UART
|
