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View SPI Signals

To decode the SPI protocol, specify spi as the protocol name for the dec subcommand and the following subcommands:

  • mode:MODE: Specify the SPI mode (0-3)
  • mosi:PIN: Specify the MOSI pin
  • miso:PIN: Specify the MISO pin
  • sck:PIN: Specify the SCK pin

You must specify at least one of mosi or miso.

Capture the signal when sending data from 0 to 255 on SPI MOSI using the spi0 write command, and decode it with the la dec:spi command.

L:/>la -p 2,3 enable
L:/>spi0 -p 2,3 write:0-255
L:/>la dec:spi {mode:0 sck:2 mosi:3} print --reso:0.4

waveform-spi-dec