projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 994d23cb JS |
1 | ------------------------------------------------------------------------------- |
| 2 | Arbitrary CEC bus traffic | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | These captures contain the typical command exchange between 2 CEC capable | |
| 6 | devices. In this case a Sony TV and 2 different amplifiers were used. | |
| 7 | ||
| 8 | The captures were taken connecting the TV and one of the amplifiers to later on | |
| 9 | switch the TV off and back on while dumping traffic on the CEC bus. | |
| 10 | ||
| 11 | The power OFF and power ON sequence can be seen in the captures with the | |
| 12 | 2 different amplifiers (Yamaha / Denon). | |
| 13 | ||
| 14 | Another spare capture was performed connecting one amplifier to the ARC input | |
| 15 | of the TV. | |
| 16 | ||
| 17 | ||
| 18 | Logic analyzer setup | |
| 19 | -------------------- | |
| 20 | ||
| 21 | The captures were taken using a Saleae Logic (fx2lafw), sampling at a rate of | |
| 22 | 1MHz. Channel 3 of the analyzer is used for the CEC bus traffic. | |
| 23 | ||
| 24 | Probe HDMI connector | |
| 25 | -------------------------- | |
| 26 | 3 Pin 13 (CEC) | |
| 27 | ||
| 28 | ||
| 29 | Data | |
| 30 | ---- | |
| 31 | ||
| 32 | Command line used was: | |
| 33 | ||
| 34 | $ sigrok-cli -d fx2lafw -c samplerate=1m -o dump.sr -C D3=CEC --time 15000 | |
| 35 | ||
| 36 | - tv_sony_amp_denon_switch_off_seq.sr | |
| 37 | Sony TV connected to a Denon amplifier: TV is switched off from remote. | |
| 38 | ||
| 39 | - tv_sony_amp_denon_switch_on_seq.sr | |
| 40 | Sony TV connected to a Denon amplifier: TV is switched on from remote. | |
| 41 | ||
| 42 | - tv_sony_amp_yamaha_switch_off_seq.sr | |
| 43 | Sony TV connected to a Denon amplifier: TV is switched off from remote. | |
| 44 | ||
| 45 | - tv_sony_amp_yamaha_switch_on_seq.sr | |
| 46 | Sony TV connected to a Yamaha amplifier: TV is switched on from remote. | |
| 47 | ||
| 48 | - tv_sony_amp_yamaha_arc_handshake.sr | |
| 49 | Sony TV connected to a Yamaha amplifier via TV ARC input. |