Hi All,
I didnt understand Initialize strategy for assigments on dcan module. I guess halcogen automatically assigned message boxes depending on whether odd or even to IF1 and IF2 registers.
Can I only use IF1 or IF2 registers for assigments? . If i can do that why halcogen generates code like below? Actually no make sense for me.
Best Regards,
Furkan
Hi Furkan,
Can I only use IF1 or IF2 registers for assigments? . If i can do that why halcogen generates code like below? Actually no make sense for me.
Yes, if you want you can only use either IF1 or IF2.
The HALCoGen code will generate in such way that, all odd numbered messages will use IF1 and all even numbered messages will use IF2. This is just because to speed up the initialization.
I mean if you select the all the message numbers sequentially, for example here i am selecting first 4 messages.
And my initialization code was generated as below:
And if you verify above code, before using any IF register, we are verifying whether the corresponding IF register set is free to use or not by polling the Busy bit.
Imagine if you use the same IF register again and again it will take some time to transfer the control data in IF register to the message object location in message RAM right?
That is the reason to speed up the initialization process, they just using IF1 for odd numbers and IF2 for even numbers.
And remember this will work only if you select the message numbers in sequentially only, but if you select only even or only odd message numbers again the process will be a bit slow.
For example, i selected the odd numbers only:
And you can see my generated code:
Only IF1 is using now, so my suggestion would be just trying to select message numbers in sequential manner.
--
Thanks & regards,
Jagadish.
