Interrupciones en C

[jfh900]

Yo tengo la versión: 3.222. Y respecto a la intrucción: clear_interrupt aparece en Built-In Functions, también aparece en busqueda, pero no aparece en Índice (en la ayuda se entiende).

[migsantiago]

Tienen razón, me equivoqué, el instalador dice que es la versión CCS PCWH 3.190.

Pues no está en built-in functions ni en búsqueda...

Lo que se le acerca es disable_interrupts

DISABLE_INTERRUPTS( )

Syntax:
 disable_interrupts (level)
 
Parameters:
 level - a constant defined in the devices .h file
 
Returns:
 undefined
 
Function:
 Disables the interrupt at the given level.  The GLOBAL level will not disable any of the specific interrupts but will prevent any of the specific interrupts, previously enabled to be active.  Valid specific levels are the same as are used in #INT_xxx and are listed in the devices .h file.  GLOBAL will also disable the peripheral interrupts on devices that have it.  Note that it is not necessary to disable interrupts inside an interrupt service routine since interrupts are automatically disabled.
 
Availability:
 Device with interrupts (PCM and PCH)

Requires
 Should have a #int_xxxx, Constants are defined in the devices .h file.
 
Examples:
 disable_interrupts(GLOBAL); // all interrupts OFF

disable_interrupts(INT_RDA); // RS232 OFF

enable_interrupts(ADC_DONE);  

enable_interrupts(RB_CHANGE);

   // these enable the interrupts

   // but since the GLOBAL is disabled they are not

   // activated until the following statement:

enable_interrupts(GLOBAL);
 
Example Files:
 ex_sisr.c, ex_stwt.c
 
Also See:
 enable_interrupts(), #int_xxxx

[jfh900]

De todas formas es una función que no es necesaria a no ser que queramos construir por nostros mismos la subrutina de interrupción. La ayuda pone lo siguiente:

Syntax:
 clear_interrupt(level)

Parameters:
 level - a constant defined in the devices.h file

Returns:
 undefined

Function:
 Clears the interrupt flag for the given level.  This function is designed for use with a specific interrupt, thus eliminating the GLOBAL level as a possible parameter.

Availability:
 All devices

Requires
 Nothing

Examples:
 clear_interrupt(int_timer1);

Example Files:
 None

Also See:
 enable_interrupts(), #INT

Si se quiere utilizar será preciso actualizar la versión o construir la función.