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.
Hi Kash,
Yes, via GPIO. But my point is to not trigger it periodically. So if you know how to send the data only once after X ms of start, that would be good for me too.
The image below shows an example where the buffer is sent when one of the GPIOs is 0. When not, a 0 vector is sent. I would like to send nothing instead of a 0 vector.
Thanks!
Roger,
If you don't want to send anything when your system is not triggered, you need to put the "SCI XMT" block inside a triggered sub-system. Otherwise it keeps sending the last value stored in the buffer, check this example out:
When GPIO is triggered, the sub-system gets triggered too and it sends out the vector [1 2], but when the GPIO is not triggered, the "SCI XMT" block inside the triggered sub-system won't send anything out.
If you want to transmit a vector let's say every "X" second, you can easily create an Stateflow to trigger and output every "X" second:
Hope it helps,
--Kash
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