User Manual

7. PROTOCOL DECODERS
Protocol decoders are drawn up as plugins.
7.1 UART Plugin (dll_uart.dll)
It decodes captured UART signal and displays that as ASCII characters,
decimal or hexadecimal values.
Fig. 5: UART Plugin
There are several features available in UART plugin setting such as input
selection, inversion of signal before decoding - which is an advantage for direct
connection of voltage level limited RS-232 (user must be aware of minimal
and maximal voltage level on Sigma2 inputs), start bit polarity thus selection
of quiescent logic level, selection of visibility of start bits, stop bits, data bits
and parity bits.
Furthermore it is possible to choose length of start and stop bits, type of parity
and word length. There are predefined UART baud rates or user defined baud
rate (by bauds per second or by number of samples of logic analyzer per a bit)
.
7.2 SPI Bus Analyzer Plugin (dll_spibus.dll)
This plugin decodes captured SPI signal and displays that as hexadecimal
values. For correct function it is necessary to set up appropriate data input,
clock input and input that trigger counting out bits in a byte.
Page 12 of 19