Flowcode Support Board

Very quick change to no components - use View->Digital pins and change A4 to 1 to start the timer - B5 will change to 1 after delay then revert to 0....

As mentioned above - it would be better to make the pins properties.. But no timer before work

Mqrtin

The input should just be A4 - not sure I saved it with this?

I gave my program a try referring to Mar tin's, although I got the interrupt to work for one condition. What I am trying to do is when my A4 goes high, output port B5 should go high after 2 seconds. I have three inputs A4, A0 and A1 which i need to configure to make B5, B6 and B7 go high at respective seconds, say 2,3 and 4 seconds without blocking the program since it needs to check input ports for high trigger. I think I am missing something somewhere, could anyone help me figure out what it is? SInce my output B5 is giving not a pulse signal.

What did you try - my code as is, or something changed?

If we can get it to work for one input/output - the other two are just a cut and paste operation (and two new variables per LED)

Martin

I tried my own program referring to yours. I am a bit confused with the ISR part since I know I must not use a delay in that macro. The challenge is how do I make it count that many seconds and how to give a pulse output signal at B ports without the delay. In usual cases I use Output block as B5 to 1, a delay of 300ms and then Output block as B5 to 0.

Attaching my latest program attempt, please have a look and let me know. Ive set my timer to 75Hz.

My code has a 'count' of interrupts for on (set in main) and then to turn off (set in the ISR) - I used arbitrary times (a count of 10) - to allow simulation.

ie:

Pin HIGH - starts timing (sets count to '10') (note ISR runs continually) The time should be as required.
ISR counts down - the ISR toggles the output (it handles on and off) - so if it has turned the LED on (led_state) then it sets an 'off' timer.

Can you post your code again - and we can take look - whilst I was typing you did

Reposting my program again
Could you take a look and lemme know what is missing? You are free to make changes and corrections as needed.... that'd really help

Hi

Martin beat me to a reply.

Attached is a far less elegant example, which I hope sort of explains the "thought".

In this:-

We have three Counters 1 - 3. These increment at 75Hz
We have three Switch states 1-3, Status of the three switches
We have three Trigger states 1 - 3. These indicate if the Switch has been triggered / already triggered.

We have a main loop.

Before the loop we enable a Timer (75Hz). In the ISR we increment three counters (Count1 / Count2 / Count3)

In the Main loop we test for each switch being active.

If Switch1 is active AND Trigger 1 is inactive we branch

When we branch we reset Counter1 and set Trigger 1 as active

Later we test Counter 1 to be a value (multiples of 75 for each second) and if the value is reached (or exceeded) AND Trigger 1 is active we branch to illuminate the LED.

We use Trigger 1 variable to both Stop multiple resets of the counter and also to stop the counter illuminating the LED if the switch hasn't been triggered,

Same for 2 and 3

Clearly not a finished product but hopefully explains the thought behind it. Many ways to do as you are after so maybe this and Martin's will give you some ideas. Martin's will be better than mine for sure....

Regards

Hi,

Tried fryer's example and applied my logic of switching, i mean turn on say port B5 when A4 is given a high trigger. But when I give high trigger to A0 and A1, it is interfering with my B5 (the corresponding port which it is not linked to). What I am trying to do is, when A4 is given high trigger, B5 will momentarily turn on and after a 300ms delay it will turn off. The same goes for ports B6 and B7 on getting high trigger from A0 and A1.

The thing is output ports B5, B6 and B7 need to work independently. Like say,
A4 is given high, then after 2 seconds B5 is momentarily high n turns off.
A0 is given high, then after 3 seconds B6 is momentarily high n turns off.
A1 is given high, then after 4 seconds B7 is momentarily high n turns off.

But in my case the Port B outputs are continuously turning on and off in simulation.

Uploading my code for guidance. Thank you for all the help.