TMS320F28027: Simulink SCI transmit disable

Hi, I'm using simulink to program TMS320F28027 microcontroller. Each second a two bytes buffer is being sent to SCI transmiter (the function called by interruption INT9.2 is empty). I would like to send the data only when I want, not periodically (p.e. when a switch is on, etc). I don't know how to do so because in Sample time you must put a real number. Any ideas? Thank you very much. PD: do not take into account ADC-PWM Synchronization via ADC Interrupt...

Answer 1

[Antonin]

You can use an "Enabled Subsystem" and put your SCI Transmit block inside to only send when you want. The control of the enabled subsystem can come from a switch or any other signal.

I hope it helps!

[Roger Roger]

Thanks!