RTOS/TM4C1294NCPDT: Event post in HWI

Manohar B

Part Number: TM4C1294NCPDT

Tool/software: TI-RTOS

Hi,

/* program */

HWIHandlerFunc()

{

// clearing HWI flag

Led_toggle_0();

Event_post(handler, event id);

}

taskFnx1()

{

while(1)

{

Event_pend(handler, event id, event none, timeout);

Led_toggle_1();

}

The above is my code, if I run the code the LED is not toggling and I am not triggering any runtime or complile error,

Question:

1.If Hwi is given, the LED_0 is toggling and not the LED_1.

2.Can I use Event_Post inside HWI?

Regards,

Manohar

0 Chester Gillon over 8 years ago

Guru 92251 points

Manohar B said:
2.Can I use Event_Post inside HWI?

The documentation for the module ti.sysbios.knl.Event says yes:

Function	Hwi	Swi	Task	Main	Startup
create	N	N	Y	Y	N
Params_init	Y	Y	Y	Y	Y
construct	N	N	Y	Y	N
delete	N	N	Y	Y	N
destruct	N	N	Y	Y	N
getPostedEvents	Y	Y	Y	Y	Y
pend	N*	N*	Y	N*	N
post	Y	Y	Y	Y	N
Definitions: (N* means OK to call iff the timeout parameter is set to '0'.) Hwi: API is callable from a Hwi thread. Swi: API is callable from a Swi thread. Task: API is callable from a Task thread. Main: API is callable during any of these phases: In your module startup after this module is started (e.g. Event_Module_startupDone() returns TRUE). During xdc.runtime.Startup.lastFxns. During main(). During BIOS.startupFxns. Startup: API is callable during any of these phases: During xdc.runtime.Startup.firstFxns. In your module startup before this module is started (e.g. Event_Module_startupDone() returns FALSE).

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