How to setup buff block in trigger subsystem

trigger block parameters: Trigger type:function-call Sample time type:triggered

buffer block parameters: Output buffer size (per channel):256 Buffer overlap:156

err "All sample times for 'untitled/Trigger Subsystem/Buffer' must be discrete. No continuous or constant sample times are allowed"

if trigger block parameters: Trigger type:function-call Sample time type:periodic

buffer block parameters: Output buffer size (per channel):256 Buffer overlap:156

err "Port-based sample time block 'untitled/Trigger Subsystem/Buffer' has a sample time, 100, on output port 1 that does not align with the periodic sample time of function-call subsystem 'untitled/Trigger Subsystem'. Only constant (inf), inherited (-1), or periodic (1) sample times are allowed in the subsystem."

thanks

Only one buffer block in trigger subsystem Ver: MATLAB 7.11 (R2010b) Simulink 7.6 (R2010b)

[Fangjun Jiang]

What do you want to achieve putting a buffer block inside a trigged subsystem block? The triggered subsystem executes only once per trigger event (even for periodic).

[alamo]

My friend, many thanks for your valuable reply.

"DSP/BIOS Task" block is normally connected to the trigged subsystem block, I have a TI's DSK(c5509A), do speech recognition experiments,so putting a buffer block inside a trigged subsystem block.but I I do not know how to do,Because buffer block is necessary

[alamo]

"DSP/BIOS Task" block is normally connected to the trigged subsystem block,Can I use "Task+Enabled subsystem" instead of it

Answer 1

[Kaustubha Govind]

The Buffer block has port-based sample times, which are not supported inside triggered subsystems. You may need to create your own S-function that imitates the functionality of the Buffer block, while reconciling its operation within triggered subsystems.