projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 3e5a7b35 IJ |
1 | This directory contains waveforms generated with OWFS |
| 2 | ||
| 3 | ||
| 4 | Tools: | |
| 5 | ||
| 6 | - Logic Analyzer: Tektronix TLA 613 | |
| 7 | - Sowtware: | |
| 8 | - Ubuntu 12.04 (Precise Pangolin) | |
| 9 | - owfs 2.8p15 | |
| 10 | - 1-Wire master: home made from: | |
| 11 | - PL2303 (USB to UART) | |
| 12 | - DS2480B (UART to 1-Wire) | |
| 13 | ||
| 14 | ||
| 15 | 1-Wire MicroLan: | |
| 16 | ||
| 17 | Two thermometers were attached to the bus (only the data line was connected, | |
| 18 | power was not): | |
| 19 | - DS28EA00 (1-Wire Digital Thermometer with Sequence Detect and PIO) | |
| 20 | - DS18B20 (Programmable Resolution 1-Wire Digital Thermometer) | |
| 21 | ||
| 22 | The server was started as: | |
| 23 | $ owserver -d /dev/ttyUSB0 | |
| 24 | ||
| 25 | ||
| 26 | Three dumps were created: | |
| 27 | ||
| 28 | 1) "owdir.sr" (samplerate = 1MHz) | |
| 29 | A request to list devices connected to the bus was performed: | |
| 30 | $ owdir | |
| 31 | /28.9BCFC8000000 | |
| 32 | /42.A8A603000000 | |
| 33 | /bus.0 | |
| 34 | /uncached | |
| 35 | /settings | |
| 36 | /system | |
| 37 | /statistics | |
| 38 | /structure | |
| 39 | /simultaneous | |
| 40 | /alarm | |
| 41 | ||
| 42 | 2) "DS18B20.sr" (samplerate = 1MHz) | |
| 43 | A read temperathure request was performed for the specified device: | |
| 44 | $ owread /28.9BCFC8000000/temperature | |
| 45 | 25.5 | |
| 46 | ||
| 47 | 2) "DS28EA00.sr" (samplerate = 1MHz) | |
| 48 | A read temperathure request was performed for the specified device: | |
| 49 | $ owread /42.A8A603000000/temperature | |
| 50 | 26.875 | |
| 51 | ||
| 52 | ||
| 53 | Conversion from TXT to sigrok dumps: | |
| 54 | ||
| 55 | The provided dumps were exported from Flextronix TLA 613 logic analizer as text | |
| 56 | files. A simple Python script was used to convert this dumps first into a | |
| 57 | binary file and then into a sigrok standard dump. | |
| 58 | ||
| 59 | ||
| 60 | Decoding 1-Wire dumps | |
| 61 | ||
| 62 | sigrok-cli -i owdir.sr -a onewire:owr=0 | |
| 63 | sigrok-cli -i DS18B20.sr -a onewire:owr=0 | |
| 64 | sigrok-cli -i DS28EA00.sr -a onewire:owr=0 |