projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| b1c3bd9b UH |
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 | |
| 26 | GND GND | |
| 27 | ||
| 28 | ||
| 29 | Data | |
| 30 | ---- | |
| 31 | ||
| 32 | The sigrok command line used was: | |
| 33 | ||
| 34 | sigrok-cli -d 0:samplerate=1mhz --samples 8388608 \ | |
| 35 | -p '1-8,2=TX' --wait-trigger --triggers 2=1 \ | |
| 36 | -o trekstor_ebr30_a_uart.sr | |
| 37 | ||
| 38 | The capturing starts when the TX signal is high for the first time (it's low | |
| 39 | before the device is powered-on). We capture as many samples as fit into the | |
| 40 | 8MByte buffer of the logic analyzer. | |
| 41 | ||
| 42 | The capture does not contain the complete bootloader/firmware output. | |
| 43 | ||
| 44 | For the full log see: | |
| 45 | ||
| 46 | http://randomprojects.org/wiki/TrekStor_eBook_Reader_3.0_EBR30-a_%28Weltbild_%2B_Hugendubel_Edition%29#UART | |
| 47 |