Focus on: SENT serial protocol decoding


The serial decoding feature in PicoScope 6 can decode 17 protocols including RS-232/UART, CAN bus, SPI and I²C. Serial decoding is included as standard, at no extra charge, with every copy of PicoScope 6. This month we focus on one of the recently added automotive protocols, SENT.

Background – SENT (Single Edge Nibble Transmission) is a serial interface originally designed for automotive applications. Lower in cost than other serial protocols, SENT has become popular in high-resolution sensor applications such as throttle position, pressure, mass airflow and temperature.

Data is normally transmitted as two 12-bit data words in a message frame. Data is transmitted as nibbles – 4 bits of data encoded in the timing of successive falling edges.

SENT decodingSENT decoding with PicoScope – The first step is to acquire the SENT signal using PicoScope. Then select Serial Decoding from the Tools menu and set up a new SENT decoder. The decoder will show the decoded SENT messages in the PicoScope scope view alongside the analog signal. PicoScope can also display SENT data in a table. Double-click a message in the table to highlight the same message in the scope view.

Read more about PicoScope's serial decoding capabilities [2015-12]