HI TI Team,
I am looking to work on projects based on mutliple interrupts like SPI,UART,I2C,ADC,ETHERNET,EDGE,GPIO Interrupts . If at a same times multiple interrupts was occured means which interrupt will executes first. I need to give the interrupts with priority based.
Kindly guide us. If possible send the example project.
Thanks and Regards,
A. Ajith Kumar
Hi Ajith Kumar,
A lowered number channel will always have higher priority than the higher number channel. And every channel has a CHANMAP bits to configure the interrupt request for the corresponding channel.
And this is the default channel assignments:
This means, after ESM interrupt RTI compare 0 have the highest priority and after that RTI compare 1 and so on.
For example, i want to make the RTI compare 1 as higher priority than RTI compare 0 then i should do as below:
The default configuration is below right:
RTI Compare 0 => CHANMAP2 = 2
RTI Compare 1 => CHANMAP3 = 3
So, to make RTI compare 1 as higher priority than RTI compare 0 then i should change the mapping as below:
RTI Compare 0 => CHANMAP2 = 3
RTI Compare 1 => CHANMAP3 = 2
Now RTI compare 1 will have higher priority than RTI compare 0 because RTI compare 1 have lower channel number than RTI compare 0. In this way you can change the priority order as required.
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Thanks & regards,
Jagadish.
