SPI

SPI (Serial Peripheral Interface) panel provides users with SPI serial communication testing. You can set the SPI mode and transmission rate to perform full-duplex communication with peripheral devices.

Supported Products and Ports

This function supports devices equipped with SPI interface. Please confirm the corresponding Port number according to your device model:

Product Name	Port
USB-DAQ-F1-AD	2
USB-DAQ-F1-CD	2
USB-DAQ-F1-D	1~2
USB-DAQ-F1-RD	2
USB-DAQ-F1-TD	2

Parameter Settings

SPI Mode

Supports four standard SPI modes, determined by Clock Polarity (CPOL) and Clock Phase (CPHA):

Mode	Clock Polarity (CPOL)	Clock Phase (CPHA)
0	0 (Idle Low)	0 (Leading Edge)
1	0 (Idle Low)	1 (Trailing Edge)
2	1 (Idle High)	0 (Leading Edge)
3	1 (Idle High)	1 (Trailing Edge)

Operation Instructions

Button/Parameter	Description
SPI Rate	Set SPI clock rate (Max 1 MHz).
CS Pin	Select Chip Select pin, specific definition depends on product specifications.
Bytes to Read	Set the length of data to read (Byte).
Write	Send data to SPI device (Write only).
Read	Receive data from SPI device (Read only).
Write+Read	Full-duplex operation: Read returned data while writing data.