Protocol decoders
Revision as of 09:40, 6 December 2011 by Uwe Hermann (talk | contribs) (→Non-protocol data analysis decoders / analyzers that have raw signals/samples as input)
This is a list of ideas for specific protocol decoders we might want to write in the future (or users might want to contribute).
See Protocol decoder API for details on how the decoders work in sigrok.
Low-level decoders
Standard protocols that have raw signals/samples as input
| Protocol | Status | Comments |
|---|---|---|
| Basic / microcontrollers / embedded | ||
| SPI | 80% | |
| I2C | 80% | |
| UART | 80% | |
| Automotive / industrial / embedded | ||
| CAN | 0% | |
| Flexray | 0% | |
| Embedded | ||
| JTAG | 0% | |
| SWD | 0% | |
| PC | ||
| USB (full-speed) | 80% | |
| LPC | 0% | |
| FWH | 0% | |
| ISA | 0% | |
| PCI | 0% | |
| SMBus | 0% | |
| Consumer IR | ||
| Nokia NRC17 | 0% | |
| Sony SIRC | 0% | |
| Philips RC-5 | 0% | |
| Philips RC-6 | 0% | |
| Philips RC-MM | 0% | |
| Philips RECS80 | 0% | |
| Miscellaneous | ||
| IrDA | 0% | |
... and many, many more.
Custom / application-specific protocols that have raw signals/samples as input
| Protocol | Status | Comments |
|---|---|---|
| Serial EEPROMs | ||
| AT93C46 | 0% | Atmel AT93C46 serial EEPROM protocol |
| Displays | ||
| HD44780 | 0% | HD44780 character LCD protocol |
... and many, many more.
Non-protocol data analysis decoders that have raw signals/samples as input
| Protocol decoder | Status | Description | Comments |
|---|---|---|---|
| Transition counter | 90% | Counts rising and falling edges in the signal. | Mostly working. |
Ideas:
- Number of clock cycles / rising-edges / falling-edges / transitions / etc. (total or per-signal)
- Min/Max/Avg distance between two events (rising edge, falling edge, signal lenths, etc.)
- ...
... and many, many more.
High-level decoders
Protocols that rely on other lower-level protocols
Protocols that do not have raw signals/samples as input, but rather an already-preprocessed bytestream generated by one of the low-level decoders.
| Protocol | Input protocol | Status | Comments |
|---|---|---|---|
| Serial EEPROMs | |||
| TODO | SPI | 0% | SPI-attached serial EEPROM. Datasheet: TODO. |
| Displays | |||
| SA8807A | SPI | 0% | SPI-attached LCD. Datasheet: Sames SA8807A. |
| EA eDIPTFT43-A | I2C | 0% | I2C-attached LCD. Datasheet: EA eDIPTFT43-A. |
| TODO | USART/RS232 | 0% | TODO |
| ADC | |||
| AD7291 | USART/RS232 | 0% | I2C-attached ADC. Datasheet: Analog Devices AD7291. |
| Other | |||
| Wii Nunchuk | I2C | 70% | |
Some ideas
- AT93C46:
- CS (chip select)
- SK (clock)
- DI (data from chip to outside)
- DO (data from outside into chip)
- Has start bit, opcodes, data following transmission
- 4-bit interface to HD44780 LCD, take two nibbles in sequence, based on clock line, and assemble them into a whole byte. Scripted plugin could do this, then pass the data back to the UI for display.
... and many, many more.
Non-protocol data analysis decoders / analyzers
- How many data bytes are in the data stream?
- What's the min/max/avg data value?
- ...