HydraFW Trigger guide - hydrabus/hydrafw GitHub Wiki
HydraFW Trigger
This guide is updated towards firmware release HydraFW v0.9 Beta
The trigger
command allows the Hydrabus to be used as an external trigger (For an oscilloscope for instance).
When started, the trigger will continuously read data on the current protocol. If the data set by the filter is matched, it will output a high state on the PB3
pin.
Configuration syntax
-
show
Show current trigger parameters -
filter
with freeform string. Sets the trigger data -
start
to run the trigger
Configuration example
Set trigger on UART1, using "Hello world\n" :
uart1> trigger filter "Hello world\x0a"
Current trigger data :
48 65 6C 6C 6F 20 77 6F 72 6C 64 0A | Hello world.
uart1> trigger show
Current trigger data :
48 65 6C 6C 6F 20 77 6F 72 6C 64 0A | Hello world.
uart1> trigger start
Availability
The following modes are supported :
- spi
- i2c
- 1-wire
- 2-wire
- 3-wire
- uart
- lin