Argument to interrupt handler

Hi Srinivasa,
The UArg type resolves to xdc_UArg which in turn resolves to an unsigned int. If you're on a 32 bit architecture then your pointer is 32 bit wide which is most likely the size of an unsigned integer. In that case you can pass in your void * as the Hwi argument and cast it to void * in your Hwi function (that's what I'd most likely do). Note that this may not be portable to say a 64-bit device where UArg could be 32 bit and pointers are 64 bit wide.

Let me know if this helps,
Moses

Hi Moses,

Thanks for your input.

I am working on 32-bit system and hence I want to pass my address of struct as the Hwi argument.

I am using Hwi_create to register the interrupt as below:

ADC0_SS0_interrupt = Hwi_create(ADC0_Sequence_0_interrupt, ADC0_Seq0_Int_Handler, &ADC0_SS0_Params, NULL);

In Hwi_create

Param 1: Interrupt number/id.
Param 2: Name of the ISR.
Param 4: The "eb" is an error block that you can use to handle errors that may occur during Hwi object creation.

The only option is to use Param 3:

Param 3: Hwi_params (Instance config-params structure) which is defined as

/* Params */
struct ti_sysbios_hal_Hwi_Params {
size_t __size;
const void* __self;
void* __fxns;
xdc_runtime_IInstance_Params* instance;
ti_sysbios_interfaces_IHwi_MaskingOption maskSetting;
xdc_UArg arg; // Can I use this parameter?
xdc_Bool enableInt;
xdc_Int eventId;
xdc_Int priority;
xdc_runtime_IInstance_Params __iprms;
};

Which member of this structure has to be used to pass my address?

Regards
Srinivasa

Hi Moses,

I found an example usage of it under

"c:\ti\tirtos_1_21_00_09\products\bios_6_37_00_20\packages\ti\sysbios\timers\dmtimer\Timer.c".

Implemented the same in my code and got it working.

Regards
Srinivasa