logic_sniffer.py
SPI Analyzer Settings

Specific settings for SPI data analysis are controlled from this dialog: The various fields are:

SCK

the channel supplying the SCK (serial clock) signal.

MOSI

the channel supplying the MOSI (Master-Out/Slave-In) signal.

MISO

the channel supplying the MISO (Master-In/Slave-Out) signal.

/SS

the channel supplying the negative-logic Slave-Select signal.

Leading Bit

MSB

the most-significant bit of a byte is received earliest.

LSB

the least-significant bit of a byte is received earliest.

Clock

Leading Edge

Rising

the rising edge of an SCK pulse is the leading edge.

Falling

the falling edge of an SCK pulse is the leading edge.

Leading Edge Action

Sample

Setup

Control Buttons

OK

accepts the SPI analysis settings.

Cancel

throws away the values entered with no further action.

SPI Data Analysis

The analysis is displayed in a separate window as a multi-column table. The sample number and time from the trigger are displayed in the first two columns. The third column shows the status of the Slave-Select pin. Master-Out and Master-In bytes are shown in the last two columns.